Storm Mode: Illinois

0 warnings total · 0 tornado warnings · 3 alerts including watches and advisories

Current alert feed · checked 13:17Z

Warnings in area

3 of 3 alerts

Frost AdvisoryGreene; Macoupin; Calhoun; Jersey; Pike; Audrain; Osage; Callaway; Montgomery; Lincoln; Gasconade; Warren; St. Charles; St. LouisNWS St Louis MO · until 14:00Zadvisory · radar-alerts checked 13:17Z
Frost AdvisoryMontgomery; Bond; Fayette; Clinton; Marion; Washington; Randolph; Madison; St. Clair; Monroe; Franklin; Jefferson; Crawford; Washington; St. Francois; Ste. Genevieve; Iron; Madison; ReynoldsNWS St Louis MO · until 14:00Zadvisory · radar-alerts checked 13:17Z
Frost AdvisoryMcLean; Logan; De Witt; Piatt; Champaign; Vermilion; Sangamon; Christian; Macon; Moultrie; Douglas; Coles; Edgar; Shelby; Cumberland; Clark; Effingham; Jasper; Crawford; Clay; Richland; LawrenceNWS Lincoln IL · until 14:00Zadvisory · radar-alerts checked 13:17Z

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Map

Frost Advisory 3

NWS’s polygons as issued, or the zones a zone-issued alert names; SPC’s watches by their counties. Checked 13:17Z. Data: NOAA/NWS, NOAA/SPC.

Agency warning geometry · no observed imagery displayed

North ↑

Interactive imagery loads separately. Missing radar does not remove warnings or imply clear weather.

Alert outlines: NOAA/NWS; cell points/observed segments: IEM/NEXRAD. A warning polygon is not a tornado footprint.

Lightning activity — GOES GLM

Total lightning, including in-cloud activity. Not ground-strike locations or a safe-to-go-outside signal.

Public event region Aggregation interval Show density on map

Cached lightning observations have not loaded. An empty map is not zero lightning.

Cached lightning source details and text readings

Snow analysis — NOHRSC

Source-rendered snow depth and snow water equivalent for the lower 48. History changes this snow picture only; warnings and radar keep their own clocks.

Snow field Retained picture Show snow on the map

Stored snow depth · footprint valid 2026-10-18 06:00:00 UTC, picture retrieved 2026-10-18 12:23:04.796 UTC.

No NOHRSC picture displayed on the interactive map.

0 - 0.39 in
0.39 - 2.0 in
2.0 - 3.9 in
3.9 - 9.8 in
9.8 - 20 in
20 - 39 in
39 - 59 in
59 - 98 in
98 - 197 in
197 - 295 in
295 - 394 in
394 - 787 in

NOHRSC snow analysis for the lower 48; see the adjacent source legend and time qualification — NOAA/NWS/NOHRSC’s original picture and legend. No station or address value is inferred.

NOHRSC footprint times are metadata; pixel analysis time is not independently verified. Snow-depth pixels have previously differed from the footprint time. This is modeled/assimilated snow analysis, not a measurement at a place. Unshaded and no-data areas do not establish zero snow.

Snow pictures, retained history and source provenance

Change time or forecast product

Replay uses retained source bytes. Recording begins with activation; missing history is not clear weather.

Live sources keep independent clocks.

Replay coverage and interpretation

Rolling target: 24 hours; cells: six hours. Radar: NOAA MRMS national overview, 8-minute tolerance. Satellite: original GOES GeoColor day/night picture, hourly sampling, 75-minute tolerance. No interpolation or latest-image fallback. Warning and source checks retain their own clocks. “Recorded by” is collector acquisition evidence, not exact browser publication history.

Current GLM density, velocity and specialist layers are hidden during replay. Snow uses retained footprint metadata with unverified pixel time. Forecast uses one pinned issuance/run and exact valid time.

No observed replay frame displayed.

Open the complete replay reader (works without scripting or WebGL)

Radar-derived cells (0) · current

Collector checked 13:17Z; feed generated 13:17Z. Zero cells does not establish coverage or clear weather. Observations from different radars are not merged.

Station and river observations (42)

Surface source current; observed water-level source current. Each reading keeps its own time. Map markers show at most 500 stations and 500 gauges; the complete source directory is paginated.

Circle: surface station; square: water-level gauge. Filled: current reading and source; hollow: stale, unconfirmed or missing observation. Marker color is not a hazard category. Enable “Stations and gauges” in Layers to inspect them on the map.

K06C · K06C · current · 12:55Z
K1H2 · K1H2 · current · 12:55Z
K3LF · K3LF · current · 12:55Z
KAJG · KAJG · current · 12:55Z
KALN · KALN · current · 12:50Z
KARR · KARR · current · 12:52Z
KBMI · KBMI · current · 12:56Z
KC75 · KC75 · current · 12:55Z
KCIR · KCIR · current · 12:55Z
KDEC · KDEC · current · 12:54Z
KDKB · KDKB · current · 12:55Z
KDPA · KDPA · current · 12:52Z
KENL · KENL · current · 12:55Z
KFEP · KFEP · current · 12:55Z
KFOA · KFOA · current · 12:55Z
KFWC · KFWC · current · 12:55Z
KGBG · KGBG · current · 12:55Z
KHSB · KHSB · current · 12:55Z
KI63 · KI63 · current · 12:55Z
KIJX · KIJX · current · 12:55Z
KIKK · KIKK · current · 12:55Z
KJOT · KJOT · current · 12:55Z
KLOT · KLOT · current · 12:45Z
KM30 · KM30 · current · 12:55Z
KMDH · KMDH · current · 12:52Z
KMDW · KMDW · current · 12:53Z
KMLI · KMLI · current · 12:52Z
KMQB · KMQB · current · 12:55Z
KMWA · KMWA · current · 12:45Z
KOLY · KOLY · current · 12:50Z
KPIA · KPIA · current · 12:54Z
KPNT · KPNT · current · 12:55Z
KPPQ · KPPQ · current · 12:55Z
KPRG · KPRG · current · 12:55Z
KRPJ · KRPJ · current · 12:55Z
KRSV · KRSV · current · 12:55Z
KSAR · KSAR · current · 12:55Z
KSFY · KSFY · current · 12:55Z
KSLO · KSLO · current · 12:55Z
KSPI · KSPI · current · 12:52Z
KTIP · KTIP · current · 12:55Z
KUGN · KUGN · current · 12:51Z

Showing 42 of 42 listed sources. All surface stations and retained trends · All supported gauges and forecasts

Selected details

Surface station KIJX

current · Observed 2026-10-18 12:55:00 UTC · wind 6 kt · temperature 5.8 °C.

Station KIJX · -90.2419, 39.774 (longitude, latitude).

Source checked 2026-10-18 13:15:05.888Z · current.

Station observations, not an address forecast or cyclone maximum wind. Maintenance-flagged, old and implausible reports are excluded by the existing parser; this is not independent NWS quality control.

Retained observations: 71; target 24 hours, at most 96 reports per station. Recording began 2026-10-17 06:15:07.108Z; oldest available reading 2026-10-17 13:35:00 UTC.

Observed sustained wind · 71 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.

Temperature, dew point and pressure trends

Observed temperature · 71 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.

Observed dew point · 71 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.

Observed sea-level pressure: no readable observations.

Observed reports as a table (71)

Observed (UTC)	Wind / gust (kt)	From (° true)	Temperature / dew point (°C)	Pressure (mb)	Visibility (mi)
2026-10-17 13:35:00 UTC	4 / Not reported	340	4.1 / 4.1	Not reported	10 or more
2026-10-17 13:55:00 UTC	3 / Not reported	350	5.1 / 3.3	Not reported	10 or more
2026-10-17 14:15:00 UTC	3 / Not reported	30	6 / 2.9	Not reported	10 or more
2026-10-17 14:35:00 UTC	5 / Not reported	20	6.5 / 2.5	Not reported	10 or more
2026-10-17 14:55:00 UTC	4 / Not reported	10	7.1 / 2.4	Not reported	10 or more
2026-10-17 15:15:00 UTC	3 / Not reported	80	7.6 / 2.4	Not reported	10 or more
2026-10-17 15:35:00 UTC	0 / Not reported	Calm	8.3 / 2	Not reported	10 or more
2026-10-17 15:55:00 UTC	3 / Not reported	80	9 / 1.9	Not reported	10 or more
2026-10-17 16:15:00 UTC	4 / Not reported	90	9.4 / 2.9	Not reported	10 or more
2026-10-17 16:35:00 UTC	4 / Not reported	100	9.4 / 1.3	Not reported	10 or more
2026-10-17 16:55:00 UTC	0 / Not reported	Calm	10 / 2.5	Not reported	10 or more
2026-10-17 17:15:00 UTC	3 / Not reported	130	10.5 / 1.8	Not reported	10 or more
2026-10-17 17:35:00 UTC	0 / Not reported	Calm	10.4 / 1.8	Not reported	10 or more
2026-10-17 17:55:00 UTC	0 / Not reported	Calm	10.9 / 1.9	Not reported	10 or more
2026-10-17 18:15:00 UTC	0 / Not reported	Calm	11.5 / 2.2	Not reported	10 or more
2026-10-17 18:35:00 UTC	3 / Not reported	210	11.6 / 1.7	Not reported	10 or more
2026-10-17 18:55:00 UTC	4 / Not reported	190	12.7 / 2.5	Not reported	10 or more
2026-10-17 19:15:00 UTC	3 / Not reported	80	12.9 / 2.5	Not reported	10 or more
2026-10-17 19:35:00 UTC	0 / Not reported	Calm	12.6 / 0.8	Not reported	10 or more
2026-10-17 19:55:00 UTC	0 / Not reported	Calm	12.8 / 0.6	Not reported	10 or more
2026-10-17 20:15:00 UTC	0 / Not reported	Calm	13 / 0.1	Not reported	10 or more
2026-10-17 20:35:00 UTC	3 / Not reported	230	13.3 / 0	Not reported	10 or more
2026-10-17 20:55:00 UTC	0 / Not reported	Calm	13.4 / -0.5	Not reported	10 or more
2026-10-17 21:15:00 UTC	0 / Not reported	Calm	13.5 / -0.4	Not reported	10 or more
2026-10-17 21:35:00 UTC	3 / Not reported	70	13.5 / -0.1	Not reported	10 or more
2026-10-17 21:55:00 UTC	3 / Not reported	180	13.3 / 0	Not reported	10 or more
2026-10-17 22:15:00 UTC	3 / Not reported	190	13.1 / 0	Not reported	10 or more
2026-10-17 22:35:00 UTC	0 / Not reported	Calm	13.1 / 0	Not reported	10 or more
2026-10-17 22:55:00 UTC	0 / Not reported	Calm	12.7 / 0.6	Not reported	10 or more
2026-10-17 23:15:00 UTC	0 / Not reported	Calm	10.9 / 2.1	Not reported	10 or more
2026-10-17 23:35:00 UTC	0 / Not reported	Calm	10.4 / 1.9	Not reported	10 or more
2026-10-17 23:55:00 UTC	0 / Not reported	Calm	9.5 / 1.6	Not reported	10 or more
2026-10-18 00:15:00 UTC	0 / Not reported	Calm	8.7 / 1.6	Not reported	10 or more
2026-10-18 00:35:00 UTC	0 / Not reported	Calm	8.1 / 2	Not reported	10 or more
2026-10-18 00:55:00 UTC	3 / Not reported	110	6.7 / 2.6	Not reported	10 or more
2026-10-18 01:15:00 UTC	0 / Not reported	Calm	5.8 / 2.6	Not reported	10 or more
2026-10-18 01:35:00 UTC	0 / Not reported	Calm	5.9 / 2.3	Not reported	10 or more
2026-10-18 01:55:00 UTC	3 / Not reported	130	5.7 / 2.2	Not reported	10 or more
2026-10-18 02:15:00 UTC	3 / Not reported	130	4.7 / 2.2	Not reported	10 or more
2026-10-18 02:35:00 UTC	3 / Not reported	130	4.8 / 2	Not reported	10 or more
2026-10-18 02:55:00 UTC	3 / Not reported	150	4.1 / 1.6	Not reported	10 or more
2026-10-18 03:15:00 UTC	4 / Not reported	140	5.5 / 1.9	Not reported	10 or more
2026-10-18 03:35:00 UTC	4 / Not reported	140	5.8 / 1.6	Not reported	10 or more
2026-10-18 03:55:00 UTC	4 / Not reported	150	5.9 / 1.6	Not reported	10 or more
2026-10-18 04:15:00 UTC	3 / Not reported	150	4.2 / 1.5	Not reported	10 or more
2026-10-18 04:35:00 UTC	4 / Not reported	150	6 / 1.7	Not reported	10 or more
2026-10-18 04:55:00 UTC	4 / Not reported	150	6 / 1.7	Not reported	10 or more
2026-10-18 05:15:00 UTC	5 / Not reported	160	5.8 / 1.8	Not reported	10 or more
2026-10-18 05:35:00 UTC	5 / Not reported	150	5.5 / 1.6	Not reported	10 or more
2026-10-18 05:55:00 UTC	5 / Not reported	150	4.7 / 1.3	Not reported	10 or more
2026-10-18 06:15:00 UTC	4 / Not reported	160	5 / 1.2	Not reported	10 or more
2026-10-18 06:35:00 UTC	4 / Not reported	160	5.2 / 1.1	Not reported	10 or more
2026-10-18 06:55:00 UTC	5 / Not reported	150	4.8 / 1	Not reported	10 or more
2026-10-18 07:15:00 UTC	4 / Not reported	150	4.8 / 1	Not reported	10 or more
2026-10-18 07:35:00 UTC	4 / Not reported	160	5.2 / 1.1	Not reported	10 or more
2026-10-18 07:55:00 UTC	4 / Not reported	160	4.8 / 1	Not reported	10 or more
2026-10-18 08:15:00 UTC	3 / Not reported	160	5.3 / 1.1	Not reported	10 or more
2026-10-18 08:35:00 UTC	4 / Not reported	160	5 / 1.1	Not reported	10 or more
2026-10-18 08:55:00 UTC	4 / Not reported	180	5.3 / 1.2	Not reported	10 or more
2026-10-18 09:15:00 UTC	5 / Not reported	160	5.6 / 1	Not reported	10 or more
2026-10-18 09:35:00 UTC	5 / Not reported	170	5.5 / 1.2	Not reported	10 or more
2026-10-18 09:55:00 UTC	6 / Not reported	170	5.8 / 1.1	Not reported	10 or more
2026-10-18 10:15:00 UTC	5 / Not reported	160	5.6 / 1.1	Not reported	10 or more
2026-10-18 10:35:00 UTC	5 / Not reported	170	6 / 1	Not reported	10 or more
2026-10-18 10:55:00 UTC	6 / Not reported	160	5.7 / 1	Not reported	10 or more
2026-10-18 11:15:00 UTC	7 / Not reported	170	5.7 / 1	Not reported	10 or more
2026-10-18 11:35:00 UTC	6 / Not reported	160	5.6 / 1	Not reported	10 or more
2026-10-18 11:55:00 UTC	6 / Not reported	170	5.4 / 1	Not reported	10 or more
2026-10-18 12:15:00 UTC	5 / Not reported	180	5.2 / 1	Not reported	10 or more
2026-10-18 12:35:00 UTC	6 / Not reported	180	5.3 / 1.2	Not reported	10 or more
2026-10-18 12:55:00 UTC	6 / Not reported	170	5.8 / 1.5	Not reported	10 or more

Capture times, quality and provenance

Each report keeps its observation time, first capture of this version, and the SHA-256 of the source bulk body. Corrections at the same observation time replace that point and are marked; unrelated bulk-file changes do not freshen a report.

Observed 2026-10-17 13:35:00 UTC, captured 2026-10-17 13:45:07.312Z; source body SHA-256 ae2fd339e3db840f298714215d70bd5d59e6875ebe4950cd99dc5f00d921b137.
Observed 2026-10-17 13:55:00 UTC, captured 2026-10-17 14:15:08.468Z; source body SHA-256 89c5e2da6c1df15fc284a3f38b9662d6ab7633272342363f5f2103f7f1dca9bc.
Observed 2026-10-17 14:15:00 UTC, captured 2026-10-17 14:30:10.654Z; source body SHA-256 3eb08494e0ad69902726856334e3d7b274b3b0fd97ce988463f0dd20e757de9f.
Observed 2026-10-17 14:35:00 UTC, captured 2026-10-17 14:45:08.203Z; source body SHA-256 d8f30f9f8cf3b7a47222fb2f314ac9318b3d3079009e45d8e7d36b75d32439a1.
Observed 2026-10-17 14:55:00 UTC, captured 2026-10-17 15:15:08.165Z; source body SHA-256 03e82f238e3281188a3e527cc38fc1ce4ad8af25fe75f76604b458e9da0f511c.
Observed 2026-10-17 15:15:00 UTC, captured 2026-10-17 15:30:05.805Z; source body SHA-256 04ddddc39c74dc78ca7472e6371d50741ec1ed3c05a6510175b1eadce1fc59e6.
Observed 2026-10-17 15:35:00 UTC, captured 2026-10-17 15:45:05.420Z; source body SHA-256 5096c4f26050a27798b083ae67f9d17cef7044f9e7fbe0c0f4b8bc6751e6e48d.
Observed 2026-10-17 15:55:00 UTC, captured 2026-10-17 16:15:08.351Z; source body SHA-256 59505eba151176b08b86d3a0c0daddc8ef63138a51e6f0371050096e6264ba55.
Observed 2026-10-17 16:15:00 UTC, captured 2026-10-17 16:30:06.505Z; source body SHA-256 74db22068716b46ae200c534183191486eca0eae11ae75373344b2be1b05dbc6.
Observed 2026-10-17 16:35:00 UTC, captured 2026-10-17 16:45:06.856Z; source body SHA-256 b0d5a15c7093ea45183076725714c0c630e9449149641a0e182f809ae2c2551e.
Observed 2026-10-17 16:55:00 UTC, captured 2026-10-17 17:15:07.865Z; source body SHA-256 eef453fe75bb9f7371aeb86c73bf75725d6277e3652437a825018d7fc35df410.
Observed 2026-10-17 17:15:00 UTC, captured 2026-10-17 17:30:08.063Z; source body SHA-256 11a3b064cbb915e9c81d77c70b40b145987a41db3e38756b4524ff24f53d5443.
Observed 2026-10-17 17:35:00 UTC, captured 2026-10-17 17:45:06.189Z; source body SHA-256 bb47c96590121b41a9feeb311f7c3d41c980d6bcd8429c717331c431e9054539.
Observed 2026-10-17 17:55:00 UTC, captured 2026-10-17 18:15:09.016Z; source body SHA-256 d40c721ef04f917fd2bc85c84ea40a5039d51af5cdf6376401aac6045358c892.
Observed 2026-10-17 18:15:00 UTC, captured 2026-10-17 18:30:06.364Z; source body SHA-256 0d6d9bc3bb7f43638efd34fe901008409d28d015405c8aad14dafa1075c4d4b1.
Observed 2026-10-17 18:35:00 UTC, captured 2026-10-17 18:45:08.637Z; source body SHA-256 d8857538eb4d7da46d85d75840aca2483dedb9a12ab990ee530f470cf5baeaa4.
Observed 2026-10-17 18:55:00 UTC, captured 2026-10-17 19:15:08.055Z; source body SHA-256 9b1ec8d3a0f8f89c0d1ebd7a0bd7e7ce037e6cc9a183d6538ed27218bec705c5.
Observed 2026-10-17 19:15:00 UTC, captured 2026-10-17 19:30:06.052Z; source body SHA-256 aa7b05d3d8cd0f26f9597345b6479a140b0f5645da83ed257a55986a53983c29.
Observed 2026-10-17 19:35:00 UTC, captured 2026-10-17 19:45:05.971Z; source body SHA-256 9a8252eafc94ab71bcce3ec09e0dd29ff50a2f9cb59878a245bd6cdcc185a2f6.
Observed 2026-10-17 19:55:00 UTC, captured 2026-10-17 20:15:10.245Z; source body SHA-256 5d4b4c11801ee60c6534338573ef2e859efd777f86df72fad00181ad9621832e.
Observed 2026-10-17 20:15:00 UTC, captured 2026-10-17 20:30:06.143Z; source body SHA-256 ef311b664ea18e802db618b518e916a1e3a6226db66bb0132936ea67c8e53edc.
Observed 2026-10-17 20:35:00 UTC, captured 2026-10-17 20:45:06.494Z; source body SHA-256 0a537b539c8d4f94e8b1348aba2bd8ded45ddcc4f2412f7bde6463c3fc2b987f.
Observed 2026-10-17 20:55:00 UTC, captured 2026-10-17 21:15:07.640Z; source body SHA-256 5c08daef9b0bed8ea3c5b6b7557a0f630a469dd035658cb1bb27d1dc72c4fd3d.
Observed 2026-10-17 21:15:00 UTC, captured 2026-10-17 21:30:06.193Z; source body SHA-256 6b760689fb92c2907448786a9f1cd24c46a53abec34ae808d02482425d2f20be.
Observed 2026-10-17 21:35:00 UTC, captured 2026-10-17 21:45:08.029Z; source body SHA-256 db20397de7bdb6dfebf6351bdecaf5c73a0c8bb695487d415e435ccd1ae7f173.
Observed 2026-10-17 21:55:00 UTC, captured 2026-10-17 22:00:07.362Z; source body SHA-256 f1fa85855e007d5d5b85e6dbf4575f6d6bfe58fd5c9a7bb6d9e9cc636ec4c3b2.
Observed 2026-10-17 22:15:00 UTC, captured 2026-10-17 22:30:06.387Z; source body SHA-256 ee800e649e35fae1655c5e482ca1b227e0961c02593fed069f69c2209017cbce.
Observed 2026-10-17 22:35:00 UTC, captured 2026-10-17 22:45:07.760Z; source body SHA-256 51938b1186526637d24b7545f93bc3e461e7b8bf18f3132a138ba4d2be8ed037.
Observed 2026-10-17 22:55:00 UTC, captured 2026-10-17 23:15:09.343Z; source body SHA-256 c50273d54023d9eed3fa370998416e92a710a0360dfdf59dd328dfb33e4357f3.
Observed 2026-10-17 23:15:00 UTC, captured 2026-10-17 23:30:06.919Z; source body SHA-256 0810dfeebf9b707b97dadc235e485226db4bcabaca108a8bb7ae809aa4923555.
Observed 2026-10-17 23:35:00 UTC, captured 2026-10-17 23:45:07.989Z; source body SHA-256 7d94b1744f678c4004984beceb9339123acb31a327423c214ece3a85d74f5b57.
Observed 2026-10-17 23:55:00 UTC, captured 2026-10-18 00:15:08.772Z; source body SHA-256 2e4c6ad295ac837c980c59790d7a701d3f94b395e669ad24a6f5d6eeb1bc7aaa.
Observed 2026-10-18 00:15:00 UTC, captured 2026-10-18 00:30:06.852Z; source body SHA-256 8e3fb2d104d62ee584c29d18a0e33a08276c0c1b45eec979cb7f087bdef2f712.
Observed 2026-10-18 00:35:00 UTC, captured 2026-10-18 00:45:10.479Z; source body SHA-256 b34d5cb7d1e91893d539f82e3b7c1bcb0803285010e7b33858b258866d0d8a86.
Observed 2026-10-18 00:55:00 UTC, captured 2026-10-18 01:15:11.480Z; source body SHA-256 4e03e4713df8355508ff6e003de099fa794d8905f60515988527c0359147ddbe.
Observed 2026-10-18 01:15:00 UTC, captured 2026-10-18 01:30:08.633Z; source body SHA-256 848e769c04c496475a4a56da164c43dc2da3091dec76864a121c5df6639d5e1a.
Observed 2026-10-18 01:35:00 UTC, captured 2026-10-18 01:45:08.112Z; source body SHA-256 13cad0e15a9b698bf0b792427bc82dd8fc2190754fc0585e8c712116a178328a.
Observed 2026-10-18 01:55:00 UTC, captured 2026-10-18 02:15:09.964Z; source body SHA-256 96d6803b8c6f76d1b7153a523f8f2c76dd3341c87fa0d79a41eada37a566a9a0.
Observed 2026-10-18 02:15:00 UTC, captured 2026-10-18 02:30:10.380Z; source body SHA-256 15a6245beadfd0a8ce6f77aaf2ff42b204b4a2e411aaa89ef6925de72a6b13f9.
Observed 2026-10-18 02:35:00 UTC, captured 2026-10-18 02:45:10.655Z; source body SHA-256 f7c5501ef4bfeeb31f4ebf98fffb35a41d8f1ea4c93568cacb717917c0a2b2c2.
Observed 2026-10-18 02:55:00 UTC, captured 2026-10-18 03:15:10.023Z; source body SHA-256 286048f59de6ba9e40cefa7baf3b30600d840a609330ffdd3c5421c3e015acde.
Observed 2026-10-18 03:15:00 UTC, captured 2026-10-18 03:30:08.591Z; source body SHA-256 5672bdaa00d8e7c67de8856281c396b4883e06cda834c224faa3a626ff6d1bf9.
Observed 2026-10-18 03:35:00 UTC, captured 2026-10-18 03:45:09.489Z; source body SHA-256 ff30b281581e6086665a9b0170982c399149dc2307f678d1c04532064fc0aa5d.
Observed 2026-10-18 03:55:00 UTC, captured 2026-10-18 04:15:10.808Z; source body SHA-256 3208f6bb3bd857b2dec6e5a4113a661211834775509581ca2d816ebbf9290282.
Observed 2026-10-18 04:15:00 UTC, captured 2026-10-18 04:30:08.115Z; source body SHA-256 b945d1dd8082b8fdac9fb06097591ce9e84170b10dcdd2e4fdd962f2b9d6fbb7.
Observed 2026-10-18 04:35:00 UTC, captured 2026-10-18 04:45:08.397Z; source body SHA-256 1981ebf0c9644e8e79c2b29009ee99216868277aa873dc9b808b83c662479d81.
Observed 2026-10-18 04:55:00 UTC, captured 2026-10-18 05:15:08.294Z; source body SHA-256 57652e3f3058d24864856efeb99784611227e7184ee8800c86e3726c5b8f0231.
Observed 2026-10-18 05:15:00 UTC, captured 2026-10-18 05:30:07.030Z; source body SHA-256 846c18882078fc94390c507105ede603df0a14abac3dfdc9e7f73c6b87a50126.
Observed 2026-10-18 05:35:00 UTC, captured 2026-10-18 05:45:07.433Z; source body SHA-256 0768cb322d2c5bf6958ddb7ce2a53d243bd969b5fea1047d24b71a6a5b41a886.
Observed 2026-10-18 05:55:00 UTC, captured 2026-10-18 06:15:09.754Z; source body SHA-256 d6f3e8bcbd73123bac653833e25613be22b44ed899976dd1627107027cbfeb90.
Observed 2026-10-18 06:15:00 UTC, captured 2026-10-18 06:30:07.583Z; source body SHA-256 9ab6462e67c4eb5bc9bba4861248e2cbbd9c65288df1942a8f6764fe2c578731.
Observed 2026-10-18 06:35:00 UTC, captured 2026-10-18 06:45:08.757Z; source body SHA-256 d4711d6703b86d9ea514fec4b95bcb3555271ef53e955aeb3ccf01ed7e9bb620.
Observed 2026-10-18 06:55:00 UTC, captured 2026-10-18 07:15:08.677Z; source body SHA-256 faedea1b22dd965e600368b0420535bdc8168cf37050ce6169b899861ed12bb6.
Observed 2026-10-18 07:15:00 UTC, captured 2026-10-18 07:30:06.796Z; source body SHA-256 74b102d64c1c868841354fbe7a693afba78dbac9ebb7f03d8570e756b2c2130f.
Observed 2026-10-18 07:35:00 UTC, captured 2026-10-18 07:45:08.639Z; source body SHA-256 9a7c7093b2467d1caafe5fbf37862b14188b33d6d26d7dd98ffea259aca6468d.
Observed 2026-10-18 07:55:00 UTC, captured 2026-10-18 08:15:10.046Z; source body SHA-256 c105473f85541105b2b2ba713894a297f735b802f44ac710a7f6895b8e510ef4.
Observed 2026-10-18 08:15:00 UTC, captured 2026-10-18 08:30:07.963Z; source body SHA-256 abda48cfec1b2ae69e44a795568c94dd13b85c9cda6ffbd700d6cc1ad8e661af.
Observed 2026-10-18 08:35:00 UTC, captured 2026-10-18 08:45:08.723Z; source body SHA-256 b94480e0282948857cb50e32abb0929b9c8b46e37658fe5c106712311ab0bc33.
Observed 2026-10-18 08:55:00 UTC, captured 2026-10-18 09:15:09.950Z; source body SHA-256 38ceee19f00ccb01570c5d4cc642842509bbe62ff24e8bdbec40a5abbd00e862.
Observed 2026-10-18 09:15:00 UTC, captured 2026-10-18 09:30:07.695Z; source body SHA-256 a58900ae1657c840a58570bc15d806cba8e5821b7206d1f20bbfe60247d2272e.
Observed 2026-10-18 09:35:00 UTC, captured 2026-10-18 09:45:08.038Z; source body SHA-256 b50442be3830d60c1e5a263821d1604a46897ac5c06cc2f0323cc6c45b1d2753.
Observed 2026-10-18 09:55:00 UTC, captured 2026-10-18 10:00:08.135Z; source body SHA-256 7088f7a20b608392c60688c0c6cc24bb874f518a9d855a8f279a1656aa963b5f.
Observed 2026-10-18 10:15:00 UTC, captured 2026-10-18 10:30:06.119Z; source body SHA-256 c09507d8a0d7bc86e2bab5fe708228dc04f4393b02bfa72428750283948a691a.
Observed 2026-10-18 10:35:00 UTC, captured 2026-10-18 10:45:07.183Z; source body SHA-256 d1ce5acb1648d1238f41210e99ee39596d1e732c016108b03ef139fa9211cf42.
Observed 2026-10-18 10:55:00 UTC, captured 2026-10-18 11:15:08.982Z; source body SHA-256 bbc0c93e9e580a3c677345c6f01d103cb3017ab4d1332af648640385547d4c48.
Observed 2026-10-18 11:15:00 UTC, captured 2026-10-18 11:30:06.515Z; source body SHA-256 552074735cbcbafca362f26045ca6aeccc9a96463d42216ab99304694b1d60ed.
Observed 2026-10-18 11:35:00 UTC, captured 2026-10-18 11:45:07.985Z; source body SHA-256 67463000a7ff204e4f09e3b692ebe0af1163f9e0efbac2b0e8edb5f990f8e3ae.
Observed 2026-10-18 11:55:00 UTC, captured 2026-10-18 12:15:08.526Z; source body SHA-256 f3e9c0272eda75fcdb932e36b0ca4350b1be24423b5982b5fbca08c72e3b3c16.
Observed 2026-10-18 12:15:00 UTC, captured 2026-10-18 12:30:06.668Z; source body SHA-256 157f3c472fc25c208b77689f1eed72bddcd8a964153fd5b23331c60e4784f99e.
Observed 2026-10-18 12:35:00 UTC, captured 2026-10-18 12:45:10.349Z; source body SHA-256 f142e253b2e9708977945035b70756d4e9ced9de7ce9eea3b94bc3315f3c9f3d.
Observed 2026-10-18 12:55:00 UTC, captured 2026-10-18 13:00:08.827Z; source body SHA-256 099a919970c81c196850e485719d2befbfd218b45455920c630e4665158be4f6.

Values use the decoded station report. Null means not reported, never zero. Gust is kept separate from sustained wind.

Observation source page · Cached readings as JSON · Official source

Recent source changes

hrrr · source-revision · 12:00ZRecorded 2026-10-18T13:15:09.492Z
metars · source-revision · 13:15ZRecorded 2026-10-18T13:15:09.492Z
mesoanalysis · source-revision · 13:15ZRecorded 2026-10-18T13:15:09.492Z
soundings · source-revision · 13:15ZRecorded 2026-10-18T13:15:09.492Z
office-hwo · source-revision · 13:15ZRecorded 2026-10-18T13:15:06.945Z
gauge-details · source-revision · 13:15ZRecorded 2026-10-18T13:15:06.704Z
gauges-observed · source-revision · 13:15ZRecorded 2026-10-18T13:15:06.704Z
radar-alerts · source-revision · 13:15ZRecorded 2026-10-18T13:15:06.372Z

Recording coverage and limits

warnings: retained from 2026-10-17T13:17:24.816Z through 2026-10-18T13:17:03.774Z
outlooks: retained from 2026-10-17T13:17:24.816Z through 2026-10-18T13:15:06.945Z
hydro: retained from 2026-10-17T13:17:24.816Z through 2026-10-18T13:15:06.704Z
analysis: retained from 2026-10-17T13:17:24.816Z through 2026-10-18T13:15:09.492Z
winter: retained from 2026-10-17T13:17:24.816Z through 2026-10-18T13:08:04.597Z

Source-message history is not recorded imagery replay. Recorded radar/satellite imagery is not available in this view.

Checks every minute; each layer keeps its own time.

Analysis and model context

Current cached context, independently dated. Regional reference: IL; a reference within a wider monitoring area does not replace the complete warning geography. This section remains separate from the historical replay cursor and official cyclone forecast. Use Forecast to pin a retained model package.

Surface: what stations observe and WPC analyses

Illinois: one station shown in each small area of the map, so it stays legible; the table lists every station in a state.

On the map

Observed temperature, °F, above-left of the station
Observed dew point, °F, below-left
Observed temperature and dew point are left off the map on a screen this narrow: the table below lists every station’s.
Observed wind: the staff points to where it blows from; a full barb is 10 kt, a half 5, a pennant 50; a ring is calm
Analysis cold front
Analysis warm front
Analysis stationary front
Analysis occluded front
Analysis dry line
Analysis trough
Analysis high and low pressure centres, with their pressure in millibars

WPC’s bulletin does not say which side of a front its symbols go, so this map draws no triangles or half-circles; each front is named on the map and in the list.

Observed 2,071 stations, each at its own time, most between 12:50Z and 13:13Z. Airport and other automated stations’ reports (METARs), as AviationWeather.gov decodes them. Left out: 620 reports flagged by the station for maintenance and one report that cannot be right; no other quality control is applied here.

Analysis WPC’s surface analysis valid 09:00Z, issued 09:00Z. A forecaster’s analysis of the fronts and pressure centres at that hour, every three hours.

WPC analyses no front across Illinois; troughs are drawn on the map.

Every station in Illinois (42)

42 stations in Illinois, by identifier
Station	Observed	Temperature	Dew point	Wind	Pressure	Visibility	Weather
K06C	12:55Z	43 °F	33 °F	210° 5 kt	—	10+ mi	—
K1H2	12:55Z	37 °F	36 °F	calm	—	10+ mi	—
K3LF	12:55Z	37 °F	33 °F	150° 3 kt	—	10+ mi	—
KAJG	12:55Z	39 °F	38 °F	calm	—	10+ mi	—
KALN	12:50Z	37 °F	36 °F	calm	—	10+ mi	—
KARR	12:52Z	37 °F	35 °F	calm	1032.1 mb	9 mi	—
KBMI	12:56Z	38 °F	34 °F	200° 6 kt	1033.2 mb	10+ mi	—
KC75	12:55Z	40 °F	32 °F	160° 4 kt	—	10+ mi	—
KCIR	12:55Z	40 °F	40 °F	calm	—	10+ mi	—
KDEC	12:54Z	38 °F	33 °F	220° 4 kt	1033.7 mb	10+ mi	—
KDKB	12:55Z	39 °F	36 °F	190° 9 kt	—	10+ mi	—
KDPA	12:52Z	40 °F	34 °F	200° 6 kt	1032.3 mb	10+ mi	—
KENL	12:55Z	38 °F	37 °F	120° 3 kt	—	—	—
KFEP	12:55Z	43 °F	37 °F	200° 8 kt	—	10+ mi	—
KFOA	12:55Z	37 °F	37 °F	calm	—	10+ mi	—
KFWC	12:55Z	40 °F	37 °F	calm	—	10+ mi	—
KGBG	12:55Z	38 °F	37 °F	160° 5 kt	—	10+ mi	—
KHSB	12:55Z	38 °F	38 °F	calm	—	10+ mi	—
KI63	12:55Z	36 °F	34 °F	160° 3 kt	—	10+ mi	—
KIJX	12:55Z	42 °F	35 °F	170° 6 kt	—	10+ mi	—
KIKK	12:55Z	38 °F	31 °F	190° 4 kt	—	10+ mi	—
KJOT	12:55Z	40 °F	36 °F	calm	—	10+ mi	—
KLOT	12:45Z	39 °F	36 °F	180° 6 kt	—	10+ mi	—
KM30	12:55Z	37 °F	37 °F	calm	—	10+ mi	—
KMDH	12:52Z	35 °F	34 °F	calm	1033.6 mb	10+ mi	—
KMDW	12:53Z	44 °F	30 °F	200° 10 kt, gusts 20 kt	1032.3 mb	10+ mi	—
KMLI	12:52Z	43 °F	35 °F	200° 10 kt	1030.7 mb	10+ mi	—
KMQB	12:55Z	41 °F	38 °F	180° 8 kt	—	10+ mi	—
KMWA	12:45Z	37 °F	36 °F	140° 4 kt	—	10+ mi	—
KOLY	12:50Z	39 °F	37 °F	calm	—	10+ mi	—
KPIA	12:54Z	39 °F	35 °F	190° 3 kt	1032.7 mb	10+ mi	—
KPNT	12:55Z	34 °F	33 °F	140° 3 kt	—	10+ mi	—
KPPQ	12:55Z	40 °F	37 °F	calm	—	10+ mi	—
KPRG	12:55Z	39 °F	34 °F	140° 4 kt	—	10+ mi	—
KRPJ	12:55Z	40 °F	37 °F	190° 6 kt	—	10+ mi	—
KRSV	12:55Z	34 °F	34 °F	330° 1 kt	—	10+ mi	—
KSAR	12:55Z	40 °F	40 °F	calm	—	10+ mi	—
KSFY	12:55Z	39 °F	36 °F	160° 7 kt	—	10+ mi	—
KSLO	12:55Z	40 °F	37 °F	not given	—	10+ mi	—
KSPI	12:52Z	42 °F	35 °F	170° 7 kt	1032.7 mb	10+ mi	—
KTIP	12:55Z	36 °F	32 °F	calm	—	10+ mi	—
KUGN	12:51Z	43 °F	36 °F	210° 9 kt	1030.8 mb	10+ mi	—

Surface observations checked 13:15Z · Data: NOAA/NWS Aviation Weather Center

WPC surface analysis checked 13:15Z · Data: NOAA/WPC

Spotlight: Winter Storm Severity Index

1 of 15

Winter Storm Severity Index

WPC: “WSSI does not depict official warnings and should always be used in context with official NWS forecasts and warnings.”

Winter Weather Area
Minor Impacts
Moderate Impacts
Major Impacts
Extreme Impacts

Highest in this area, by day and by cause

Day 1: nothing drawn
Day 2: nothing drawn
Day 3: nothing drawn
Snow amount, Days 1–3: nothing drawn
Snow load, Days 1–3: nothing drawn
Ice, Days 1–3: nothing drawn
Blowing snow, Days 1–3: nothing drawn

Each day and cause on the Winter tab, with its own issue time

WPC’s WSSI, overall impact, Days 1–3, valid 10:00Z to 21 Oct 06:00Z, issued 10:14Z. WPC issues each day and cause on its own clock. Not a warning, and not a chance. Data: NOAA/NWS/WPC.

Chance of Moderate impacts or worse, Day 1

WPC: “WSSI does not depict official warnings and should always be used in context with official NWS forecasts and warnings.”

5–10% (not drawn)
10–20% (not drawn)
20–30% (not drawn)
30–40% (not drawn)
40–50% (not drawn)
50–60% (not drawn)
60–70% (not drawn)
70–80% (not drawn)
80–90% (not drawn)
90–95% (not drawn)
95% or more (not drawn)

Each level and day on the Winter tab

WPC’s WSSI-P: no chance drawn for Day 1. Data: NOAA/NWS/WPC.

Chance of at least 4 inches of snow, Day 1

WPC gives no chance of 4 inches of snow or more in this area over the next three days, so Day 1’s 4 inches is shown.

Slight: at least 10%
Moderate: at least 40%
High: at least 70%

Every day and amount on the Winter tab

WPC’s Probabilistic Winter Precipitation Forecast, 12:00Z to 19 Oct 12:00Z, issued 07:36Z. Outlines, as WPC draws them. Data: NOAA/NWS/WPC.

Winter watches, warnings and advisories

Frost Advisory 3 until 14:00Z · NWS Lincoln IL, NWS St Louis MO

NWS’s winter and cold alerts in force in the area, by event as issued, each counted once, with the offices that issued them and the latest end. Data: NOAA/NWS.

Snow on the ground

NOHRSC snow depth and snow water equivalent use the source’s original pictures and legends, with qualified footprint times. Open the cached source page for availability and retained history. This wall has no snow picture to rotate; missing imagery does not mean no snow.

NOHRSC snow analysis and retained pictures

Data: NOAA/NWS/NOHRSC. Snow analysis, not a measurement at a place.

WPC’s heavy snow and icing discussion

The whole discussion

Issued 08:46Z, for 12:00Z to 21 Oct 12:00Z. WPC’s words, as written. Data: NOAA/NWS/WPC.

SPC Day 1 outlook

General Thunderstorms Risk

SPC’s Day 1 categorical outlook, valid 13:00Z to 19 Oct 12:00Z, issued 12:30Z. SPC’s categories, as drawn. Data: NOAA/SPC.

Watches

No tornado or severe thunderstorm watch in force in this area.

SPC’s watches, by number, matched by the counties they list. Data: NOAA/SPC.

Mesoscale discussions

No mesoscale discussion reaches this area.

SPC’s mesoscale discussions whose outline reaches the area. Data: NOAA/SPC.

Storm ingredients

SPC’s hourly mesoanalysis, observed soundings and model guidance for the area, on the Analysis tab with its own clocks.

Open the Analysis tab

Drawn by the Analysis tab’s own renderer. Data: NOAA/SPC, NOAA/NCEP.

Flash-flood risk, Day 1

Marginal

WPC’s excessive rainfall outlook, 12:00Z to 19 Oct 12:00Z, issued 07:56Z: a chance of flash flooding, in four categories. Data: NOAA/WPC.

River gauges in flood

No river, coastal or lake gauge in this area is in flood, observed or forecast.

NWS’s gauges at flood stage or above in the area, worst first, each with its forecast hydrograph on Rain & rivers. Data: NOAA/NWPS.

Rain expected and rain that fell

WPC’s rain forecast and MRMS’s radar estimate of the rain that fell, on the Briefing’s map for the area.

Open Rain & rivers

Data: NOAA/WPC, NOAA/NSSL MRMS.

The tropics

NHC’s and JTWC’s storms, their official graphics and the watches and warnings for them. Storm Mode’s own tropical panels arrive with its tropical events.

Open the Tropics page

Data: NOAA/NHC, JTWC.

Radar, winter preset

The Radar page’s winter preset over the area: HRDPS forecast snow with NWS’s warnings on top, loaded by your browser. A forecast, labelled as one there.

Open the radar

Live tiles; the radar keeps no last-good copy.

What changed, last 60 minutes

13:16ZFrost Advisory no longer in force: Carroll; Warren; Tippecanoe; Fountain; Vermillion; Parke; Putnam; Marion; Vigo; Clay; Owen; Morgan; Johnson; Sullivan; Greene; Monroe; Brown; Bartholomew; Knox; Daviess; Martin; Lawrence; Jackson; Jennings
13:16ZFrost Advisory no longer in force: Jefferson; Wayne; Edwards; Wabash; Perry; Franklin; Hamilton; White; Jackson; Williamson; Saline; Gallatin; Union; Johnson; Pope; Hardin; Alexander; Pulaski; Massac; Gibson; Pike; Posey; Vanderburgh; Warrick; Spencer; Fulton; Hickman; Carlisle; Ballard; McCracken; Graves; Livingston; Marshall; Calloway; Crittenden; Lyon; Trigg; Caldwell; Union; Webster; Hopkins; Christian; Henderson; Daviess; McLean; Muhlenberg; Todd; Perry; Bollinger; Cape Girardeau; Wayne; Carter; Ripley; Butler; Stoddard; Scott; Mississippi; New Madrid
13:16ZFrost Advisory no longer in force: Kankakee; Livingston; Iroquois; Ford; Eastern Will; Lake; Porter; Newton; Jasper; Benton
12:30ZSPC Day 1 outlook issued

The products’ own words and times, and what is no longer in force since the last read. Never written by AI.

Monitoring area, legacy alert summary and selection rules

Area: Illinois (NWS states: IL)
Hazards: Every kind of warning, watch and advisory this site carries
Window: In force now, with the next days of SPC’s and WPC’s products
Made by: This address: anyone can make one, and nothing is stored. Change the area or hazards

An area you chose, not a storm’s footprint: everything here is in force in this area, never “from this storm”.

In force in this area 3

Frost Advisory3until 14:00Z

Every alert in this area, most urgent first

Frost AdvisoryGreene; Macoupin; Calhoun; Jersey; Pike; Audrain; Osage; Callaway; Montgomery; Lincoln; Gasconade; Warren; St. Charles; St. Louisuntil 14:00Z · NWS St Louis MO
Frost AdvisoryMontgomery; Bond; Fayette; Clinton; Marion; Washington; Randolph; Madison; St. Clair; Monroe; Franklin; Jefferson; Crawford; Washington; St. Francois; Ste. Genevieve; Iron; Madison; Reynoldsuntil 14:00Z · NWS St Louis MO
Frost AdvisoryMcLean; Logan; De Witt; Piatt; Champaign; Vermilion; Sangamon; Christian; Macon; Moultrie; Douglas; Coles; Edgar; Shelby; Cumberland; Clark; Effingham; Jasper; Crawford; Clay; Richland; Lawrenceuntil 14:00Z · NWS Lincoln IL

Most urgent first, by the Briefing’s ranking. Checked 13:17Z.

Sources

NWS warnings and SPC watches checked 13:17Z
NWS watches and advisories checked 13:17Z
SPC mesoscale discussions checked 13:17Z
SPC Day 1 outlook checked 13:15Z
WPC excessive rainfall checked 13:15Z
NWPS river gauges checked 13:15Z
WPC WSSI checked 13:08Z
WPC WSSI-P checked 13:08Z
WPC snow and ice chances checked 13:08Z
WPC heavy snow and icing discussion checked 13:08Z
Radar live tiles, no last-good copy

Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.