Data health

Storm Mode / Tracked area

River flooding: Iowa

Wall mode

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

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Map

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

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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.

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.

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
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  • 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.

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Radar-derived cells (0) · current

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

    Station and river observations (53)

    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.

    Showing 53 of 53 listed sources. All surface stations and retained trends · All supported gauges and forecasts

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    Surface station KBRL

    current · Observed 2026-10-18 13:53:00 UTC · wind 11 kt · temperature 7.8 °C.

    Station KBRL · -91.1255, 40.7729 (longitude, latitude).

    Source checked 2026-10-18 14:30:05.480Z · 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: 20; target 24 hours, at most 96 reports per station. Recording began 2026-10-17 06:15:07.108Z; oldest available reading 2026-10-17 18:53:00 UTC.

    Observed sustained wind at KBRL (kt)Dots are retained observations. Lines break for missing fields, long intervals or changed station location or units. 0 recorded discontinuities. Dashed lines, when present, are the separately issued NWS forecast.12.1-1.1kt10-17 18:53Z10-18 13:53Z2026-10-17 18:53:00 UTC · 3 kt2026-10-17 19:53:00 UTC · 6 kt2026-10-17 20:53:00 UTC · 5 kt2026-10-17 21:53:00 UTC · 7 kt2026-10-17 22:53:00 UTC · 5 kt2026-10-17 23:53:00 UTC · 0 kt2026-10-18 00:53:00 UTC · 3 kt2026-10-18 01:53:00 UTC · 5 kt2026-10-18 02:53:00 UTC · 4 kt2026-10-18 03:53:00 UTC · 5 kt2026-10-18 04:53:00 UTC · 5 kt2026-10-18 05:53:00 UTC · 6 kt2026-10-18 06:53:00 UTC · 7 kt2026-10-18 07:53:00 UTC · 7 kt2026-10-18 08:53:00 UTC · 5 kt2026-10-18 09:53:00 UTC · 5 kt2026-10-18 10:53:00 UTC · 6 kt2026-10-18 11:53:00 UTC · 7 kt2026-10-18 12:53:00 UTC · 7 kt2026-10-18 13:53:00 UTC · 11 kt
    Observed sustained wind · 20 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.
    Temperature, dew point and pressure trends
    Observed temperature at KBRL (°C)Dots are retained observations. Lines break for missing fields, long intervals or changed station location or units. 0 recorded discontinuities. Dashed lines, when present, are the separately issued NWS forecast.14.32.9°C10-17 18:53Z10-18 13:53Z2026-10-17 18:53:00 UTC · 12.2 °C2026-10-17 19:53:00 UTC · 12.8 °C2026-10-17 20:53:00 UTC · 13.3 °C2026-10-17 21:53:00 UTC · 13.3 °C2026-10-17 22:53:00 UTC · 12.2 °C2026-10-17 23:53:00 UTC · 8.9 °C2026-10-18 00:53:00 UTC · 6.7 °C2026-10-18 01:53:00 UTC · 7.2 °C2026-10-18 02:53:00 UTC · 6.1 °C2026-10-18 03:53:00 UTC · 6.1 °C2026-10-18 04:53:00 UTC · 6.1 °C2026-10-18 05:53:00 UTC · 5 °C2026-10-18 06:53:00 UTC · 6.1 °C2026-10-18 07:53:00 UTC · 5.6 °C2026-10-18 08:53:00 UTC · 5 °C2026-10-18 09:53:00 UTC · 3.9 °C2026-10-18 10:53:00 UTC · 5 °C2026-10-18 11:53:00 UTC · 5 °C2026-10-18 12:53:00 UTC · 5.6 °C2026-10-18 13:53:00 UTC · 7.8 °C
    Observed temperature · 20 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.
    Observed dew point at KBRL (°C)Dots are retained observations. Lines break for missing fields, long intervals or changed station location or units. 0 recorded discontinuities. Dashed lines, when present, are the separately issued NWS forecast.4.3-2.7°C10-17 18:53Z10-18 13:53Z2026-10-17 18:53:00 UTC · -0.6 °C2026-10-17 19:53:00 UTC · -1.7 °C2026-10-17 20:53:00 UTC · -1.7 °C2026-10-17 21:53:00 UTC · -0.6 °C2026-10-17 22:53:00 UTC · -0.6 °C2026-10-17 23:53:00 UTC · 1.1 °C2026-10-18 00:53:00 UTC · 2.2 °C2026-10-18 01:53:00 UTC · 2.2 °C2026-10-18 02:53:00 UTC · 1.7 °C2026-10-18 03:53:00 UTC · 1.7 °C2026-10-18 04:53:00 UTC · 1.1 °C2026-10-18 05:53:00 UTC · 1.1 °C2026-10-18 06:53:00 UTC · 1.7 °C2026-10-18 07:53:00 UTC · 1.7 °C2026-10-18 08:53:00 UTC · 1.7 °C2026-10-18 09:53:00 UTC · 1.7 °C2026-10-18 10:53:00 UTC · 1.7 °C2026-10-18 11:53:00 UTC · 1.7 °C2026-10-18 12:53:00 UTC · 2.2 °C2026-10-18 13:53:00 UTC · 3.3 °C
    Observed dew point · 20 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.
    Observed sea-level pressure at KBRL (mb)Dots are retained observations. Lines break for missing fields, long intervals or changed station location or units. 0 recorded discontinuities. Dashed lines, when present, are the separately issued NWS forecast.1034.61028.8mb10-17 18:53Z10-18 13:53Z2026-10-17 18:53:00 UTC · 1033.6 mb2026-10-17 19:53:00 UTC · 1032.5 mb2026-10-17 20:53:00 UTC · 1031.8 mb2026-10-17 21:53:00 UTC · 1031.2 mb2026-10-17 22:53:00 UTC · 1031 mb2026-10-17 23:53:00 UTC · 1030.8 mb2026-10-18 00:53:00 UTC · 1031 mb2026-10-18 01:53:00 UTC · 1030.6 mb2026-10-18 02:53:00 UTC · 1030.6 mb2026-10-18 03:53:00 UTC · 1030.6 mb2026-10-18 04:53:00 UTC · 1030.5 mb2026-10-18 05:53:00 UTC · 1030 mb2026-10-18 06:53:00 UTC · 1029.9 mb2026-10-18 07:53:00 UTC · 1029.8 mb2026-10-18 08:53:00 UTC · 1029.8 mb2026-10-18 09:53:00 UTC · 1030 mb2026-10-18 10:53:00 UTC · 1030.6 mb2026-10-18 11:53:00 UTC · 1031 mb2026-10-18 12:53:00 UTC · 1031.2 mb2026-10-18 13:53:00 UTC · 1031 mb
    Observed sea-level pressure · 20 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.
    Observed reports as a table (20)
    Observed (UTC)Wind / gust (kt)From (° true)Temperature / dew point (°C)Pressure (mb)Visibility (mi)
    2026-10-17 18:53:00 UTC3 / Not reported16012.2 / -0.61033.610 or more
    2026-10-17 19:53:00 UTC6 / Not reported23012.8 / -1.71032.510 or more
    2026-10-17 20:53:00 UTC5 / Not reported24013.3 / -1.71031.810 or more
    2026-10-17 21:53:00 UTC7 / Not reported21013.3 / -0.61031.210 or more
    2026-10-17 22:53:00 UTC5 / Not reported24012.2 / -0.6103110 or more
    2026-10-17 23:53:00 UTC0 / Not reportedCalm8.9 / 1.11030.810 or more
    2026-10-18 00:53:00 UTC3 / Not reported1706.7 / 2.2103110 or more
    2026-10-18 01:53:00 UTC5 / Not reported1907.2 / 2.21030.610 or more
    2026-10-18 02:53:00 UTC4 / Not reported1906.1 / 1.71030.610 or more
    2026-10-18 03:53:00 UTC5 / Not reported2006.1 / 1.71030.610 or more
    2026-10-18 04:53:00 UTC5 / Not reported2006.1 / 1.11030.510 or more
    2026-10-18 05:53:00 UTC6 / Not reported2005 / 1.1103010 or more
    2026-10-18 06:53:00 UTC7 / Not reported2006.1 / 1.71029.910 or more
    2026-10-18 07:53:00 UTC7 / Not reported2005.6 / 1.71029.810 or more
    2026-10-18 08:53:00 UTC5 / Not reported2105 / 1.71029.810 or more
    2026-10-18 09:53:00 UTC5 / Not reported2003.9 / 1.7103010 or more
    2026-10-18 10:53:00 UTC6 / Not reported2005 / 1.71030.610 or more
    2026-10-18 11:53:00 UTC7 / Not reported2005 / 1.7103110 or more
    2026-10-18 12:53:00 UTC7 / Not reported2005.6 / 2.21031.210 or more
    2026-10-18 13:53:00 UTC11 / Not reported2107.8 / 3.3103110 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 18:53:00 UTC, captured 2026-10-17 19:00:06.492Z; source body SHA-256 9b92790a99ac0e8c2777442829b2a9236f72d6e831b8d9a0836ca29a9d3acbba.
    • Observed 2026-10-17 19:53:00 UTC, captured 2026-10-17 20:00:08.337Z; source body SHA-256 b75985c438912b2da4a26e309fc2fbabef235be8a13c5848c5c5d64297850019.
    • Observed 2026-10-17 20:53:00 UTC, captured 2026-10-17 21:00:07.279Z; source body SHA-256 79c0cc8ae6d502baffa56263b2daf4c86fd1628f11d5a529402c527d0ff32fe1.
    • Observed 2026-10-17 21:53:00 UTC, captured 2026-10-17 22:00:07.362Z; source body SHA-256 f1fa85855e007d5d5b85e6dbf4575f6d6bfe58fd5c9a7bb6d9e9cc636ec4c3b2.
    • Observed 2026-10-17 22:53:00 UTC, captured 2026-10-17 23:00:07.092Z; source body SHA-256 2ee1214ad66de98865565d92f21f7f5094d6b2e4ef4f09839341a5e6cd89b61b.
    • Observed 2026-10-17 23:53:00 UTC, captured 2026-10-18 00:00:09.347Z; source body SHA-256 fe50c177f37463edb2970e7df309ca8243c740fe7f3ba6344704878ab6922ee2.
    • Observed 2026-10-18 00:53:00 UTC, captured 2026-10-18 01:00:10.019Z; source body SHA-256 949eb463d93270208adccd66994771bf859674b804d78a93f2b1e78571af9b73.
    • Observed 2026-10-18 01:53:00 UTC, captured 2026-10-18 02:00:07.747Z; source body SHA-256 2a808d30ef24af292625f66ac29ed87d3497f0029e7978811a5214db4d4e391c.
    • Observed 2026-10-18 02:53:00 UTC, captured 2026-10-18 03:00:08.091Z; source body SHA-256 1ff4ba07d334ddc5e777bc047fb0a9a13be27865eed8a1596ab4f40757641175.
    • Observed 2026-10-18 03:53:00 UTC, captured 2026-10-18 04:00:09.699Z; source body SHA-256 8e92b49a3b0987ff40c99aaaa9dbae3470c3cdf7475dec143172378b951fb9c9.
    • Observed 2026-10-18 04:53:00 UTC, captured 2026-10-18 05:00:07.387Z; source body SHA-256 d0747946a85e0b6149bd4061e0c1af798f590d9eac7088d421db1613ed7afb6e.
    • Observed 2026-10-18 05:53:00 UTC, captured 2026-10-18 06:00:07.780Z; source body SHA-256 516488ab99336824be748099d9095cce133bd39e49a9ebce7ac31e8ca5594345.
    • Observed 2026-10-18 06:53:00 UTC, captured 2026-10-18 07:00:07.060Z; source body SHA-256 cef387356b01a216d569fa5c4ef4911e52a5f5bb19d30034c5f3867ad0b3f6c5.
    • Observed 2026-10-18 07:53:00 UTC, captured 2026-10-18 08:00:11.468Z; source body SHA-256 53a01ad60670349facf980ea22602bd1fb21ffca3c40d501342bfb23f8e22c0b.
    • Observed 2026-10-18 08:53:00 UTC, captured 2026-10-18 09:00:09.520Z; source body SHA-256 8ad9748657ec506ad6f6e8aeac27fa8611b3416e28598e978a06c642e3ba8df5.
    • Observed 2026-10-18 09:53:00 UTC, captured 2026-10-18 10:00:08.135Z; source body SHA-256 7088f7a20b608392c60688c0c6cc24bb874f518a9d855a8f279a1656aa963b5f.
    • Observed 2026-10-18 10:53:00 UTC, captured 2026-10-18 11:00:09.217Z; source body SHA-256 4c9aeddeccab4a18ef736d7fde43bbf68e646f4e3dd3672a819a2d3d41e31ffb.
    • Observed 2026-10-18 11:53:00 UTC, captured 2026-10-18 12:00:08.069Z; source body SHA-256 99d8a01a4181fd6dc5a6f38379f01ddc13eb1176afbc54835f8b9e2d8864e444.
    • Observed 2026-10-18 12:53:00 UTC, captured 2026-10-18 13:00:08.827Z; source body SHA-256 099a919970c81c196850e485719d2befbfd218b45455920c630e4665158be4f6.
    • Observed 2026-10-18 13:53:00 UTC, captured 2026-10-18 14:00:06.781Z; source body SHA-256 d5bb4158d51e4be8ae455671d404663bf3c089899145baea8f175a4f02ee691b.

    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

    Recording coverage and limits
    • warnings: retained from 2026-10-17T14:44:38.320Z through 2026-10-18T14:44:04.932Z
    • outlooks: retained from 2026-10-17T14:44:38.320Z through 2026-10-18T14:40:04.842Z
    • hydro: retained from 2026-10-17T14:44:38.320Z through 2026-10-18T14:35:07.225Z
    • analysis: retained from 2026-10-17T14:44:38.320Z through 2026-10-18T14:30:11.609Z
    • winter: retained from 2026-10-17T14:44:38.320Z through 2026-10-18T14:38:06.180Z

    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.

    Spotlight: Flash-flood risk, Day 1

    1 of 4

    Flash-flood risk, Day 1

    • Marginal

    WPC’s excessive rainfall outlook, to , issued : 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; 2 gauges at action stage.

    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.

    Radar

    NOAA’s radar for the area, loaded by your browser as on the Radar page.

    Open the radar

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

    What changed, last 60 minutes

    since , when this server began watching this area

    Nothing has changed since 14:44Z.

    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
    Iowa (NWS states: IA)
    Hazards
    River flood warnings, watches and advisories, and the forecasts for them
    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

    No warning, watch or advisory for these hazards is in force in this area.

    NWS’s alerts checked : a successful check, so this is none in force, not “can’t tell”.

    Sources

    Choose another storm or areaChange monitoring areaSource status

    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.