Flash-flood risk, Day 1
- Marginal
- Slight
WPC’s excessive rainfall outlook, to , issued : a chance of flash flooding, in four categories. Data: NOAA/WPC.
CURRENT CONTEXT · 0 warnings total · 0 tornado warnings · 0 alerts including watches and advisories
Current alert feed · checked
Warnings in area
0 of 0 alertsNo active alerts reported by the current feed in this monitoring area.
Watched places
Places saved on this device appear here with scripting enabled.
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.
Agency warning geometry · no observed imagery displayed
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.
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 00:00:00 UTC, picture retrieved 2026-10-18 06:23:06.237 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 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.
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 ; feed generated . Zero cells does not establish coverage or clear weather. Observations from different radars are not merged.
Station and river observations (100)
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.
- KAAT · KAAT · current ·
- KACV · KACV · current ·
- KAJO · KAJO · current ·
- KAPC · KAPC · current ·
- KAUN · KAUN · current ·
- KBFL · KBFL · current ·
- KBIH · KBIH · current ·
- KBLH · KBLH · current ·
- KBUR · KBUR · current ·
- KC83 · KC83 · current ·
- KCCB · KCCB · current ·
- KCCR · KCCR · current ·
- KCEC · KCEC · current ·
- KCMA · KCMA · current ·
- KCNO · KCNO · current ·
- KCPU · KCPU · current ·
- KCRQ · KCRQ · current ·
- KCVH · KCVH · current ·
- KDAG · KDAG · current ·
- KDLO · KDLO · current ·
- KDVO · KDVO · current ·
- KDWA · KDWA · current ·
- KE16 · KE16 · current ·
- KEDU · KEDU · current ·
- KEDW · KEDW · current ·
- KEED · KEED · current ·
- KF70 · KF70 · current ·
- KFAT · KFAT · current ·
- KFHM · KFHM · current ·
- KFOT · KFOT · current ·
- KFUL · KFUL · current ·
- KGOO · KGOO · current ·
- KHAF · KHAF · current ·
- KHJO · KHJO · current ·
- KHWD · KHWD · current ·
- KIPL · KIPL · current ·
- KIZA · KIZA · current ·
- KJAQ · KJAQ · current ·
- KL08 · KL08 · current ·
- KL18 · KL18 · current ·
- KLGB · KLGB · current ·
- KLLR · KLLR · current ·
- KLPC · KLPC · current ·
- KLVK · KLVK · current ·
- KMCC · KMCC · current ·
- KMCE · KMCE · current ·
- KMHR · KMHR · current ·
- KMHS · KMHS · current ·
- KMHV · KMHV · current ·
- KMMH · KMMH · current ·
- KMOD · KMOD · current ·
- KMRY · KMRY · current ·
- KMWS · KMWS · current ·
- KMYF · KMYF · current ·
- KNFG · KNFG · current ·
- KNJK · KNJK · current ·
- KNUQ · KNUQ · current ·
- KO05 · KO05 · current ·
- KO22 · KO22 · current ·
- KO26 · KO26 · current ·
- KO32 · KO32 · current ·
- KO54 · KO54 · current ·
- KO69 · KO69 · current ·
- KO86 · KO86 · current ·
- KOAK · KOAK · current ·
- KOAR · KOAR · current ·
- KONT · KONT · current ·
- KOVE · KOVE · current ·
- KOXR · KOXR · current ·
- KPMD · KPMD · current ·
- KPSP · KPSP · current ·
- KPVF · KPVF · current ·
- KRAL · KRAL · current ·
- KRBL · KRBL · current ·
- KRIV · KRIV · current ·
- KRNM · KRNM · current ·
- KSAC · KSAC · current ·
- KSBA · KSBA · current ·
- KSBD · KSBD · current ·
- KSBP · KSBP · current ·
- KSEE · KSEE · current ·
- KSIY · KSIY · current ·
- KSJC · KSJC · current ·
- KSLI · KSLI · current ·
- KSMF · KSMF · current ·
- KSNS · KSNS · current ·
- KSQL · KSQL · current ·
- KSTS · KSTS · current ·
- KSVE · KSVE · current ·
- KTCY · KTCY · current ·
- KTRK · KTRK · current ·
- KTSP · KTSP · current ·
- KTVL · KTVL · current ·
- KUKI · KUKI · current ·
- KVCB · KVCB · current ·
- KVCV · KVCV · current ·
- KVNY · KVNY · current ·
- KWJF · KWJF · current ·
- KWVI · KWVI · current ·
- MCBC1 · Marsh Creek Reservoir · current ·
Showing 100 of 100 listed sources. All surface stations and retained trends · All supported gauges and forecasts
Selected details
CloseSurface station KRIV
current · Observed 2026-10-18 06:55:00 UTC · wind 8 kt · temperature 19.8 °C.
Station KRIV · -117.244, 33.878 (longitude, latitude).
Source checked 2026-10-18 07:30:05.036Z · 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: 26; target 24 hours, at most 96 reports per station. Recording began 2026-10-17 06:15:07.108Z; oldest available reading 2026-10-17 07:55:00 UTC.
Temperature, dew point and pressure trends
Observed reports as a table (26)
| Observed (UTC) | Wind / gust (kt) | From (° true) | Temperature / dew point (°C) | Pressure (mb) | Visibility (mi) |
|---|---|---|---|---|---|
| 2026-10-17 07:55:00 UTC | 11 / Not reported | 80 | 26.9 / 2 | 1015.6 | 10 or more |
| 2026-10-17 08:36:00 UTC | 17 / 22 | 70 | 27 / 3 | 1015.2 | 10 or more |
| 2026-10-17 08:55:00 UTC | 13 / 21 | 80 | 26.5 / 2.4 | 1015.2 | 10 or more |
| 2026-10-17 09:55:00 UTC | 8 / Not reported | 60 | 26.5 / 1.7 | 1014.9 | 10 or more |
| 2026-10-17 10:55:00 UTC | 13 / Not reported | 70 | 26 / 0.6 | 1014.9 | 10 or more |
| 2026-10-17 11:55:00 UTC | 17 / 22 | 80 | 26.1 / 0.7 | 1014.9 | 10 or more |
| 2026-10-17 12:55:00 UTC | 11 / 18 | 100 | 25.4 / 1.5 | 1015.3 | 10 or more |
| 2026-10-17 13:55:00 UTC | 14 / 22 | 80 | 25.2 / 0.6 | 1015.7 | 10 or more |
| 2026-10-17 14:55:00 UTC | 14 / Not reported | 80 | 25 / 1.1 | 1015.8 | 10 or more |
| 2026-10-17 15:55:00 UTC | 12 / 19 | 70 | 25.4 / 0.8 | 1016.5 | 10 or more |
| 2026-10-17 16:55:00 UTC | 18 / 24 | 70 | 25.6 / 1.6 | 1016.4 | 10 or more |
| 2026-10-17 17:55:00 UTC | 19 / Not reported | 90 | 26 / 1.3 | 1016.4 | 10 or more |
| 2026-10-17 18:55:00 UTC | 14 / Not reported | 80 | 26.1 / 0.7 | 1016 | 10 or more |
| 2026-10-17 19:55:00 UTC | 18 / 22 | 90 | 26.8 / 0.5 | 1015.7 | 10 or more |
| 2026-10-17 20:55:00 UTC | 18 / Not reported | 80 | 27.6 / 0.3 | 1014.7 | 10 or more |
| 2026-10-17 21:55:00 UTC | 15 / Not reported | 90 | 28 / 0.7 | 1014 | 10 or more |
| 2026-10-17 22:55:00 UTC | 19 / Not reported | 80 | 27.4 / 0.2 | 1014 | 10 or more |
| 2026-10-17 23:55:00 UTC | 15 / Not reported | 80 | 26.7 / 0.4 | 1014 | 10 or more |
| 2026-10-18 00:55:00 UTC | 11 / Not reported | 70 | 25.7 / 0.3 | 1013.7 | 10 or more |
| 2026-10-18 01:55:00 UTC | 6 / Not reported | 70 | 24.2 / 0.5 | 1014.5 | 10 or more |
| 2026-10-18 02:55:00 UTC | 9 / Not reported | 60 | 23.7 / 0.1 | 1014.8 | 10 or more |
| 2026-10-18 03:55:00 UTC | 9 / Not reported | 80 | 23.9 / -1.1 | 1014.8 | 10 or more |
| 2026-10-18 04:55:00 UTC | 8 / Not reported | 140 | 21.5 / 1.2 | 1015.6 | 10 or more |
| 2026-10-18 05:55:00 UTC | 11 / Not reported | 100 | 20.6 / 2.4 | 1015.6 | 10 or more |
| 2026-10-18 06:14:00 UTC | 8 / Not reported | 130 | 21 / 2 | 1015.6 | 10 or more |
| 2026-10-18 06:55:00 UTC | 8 / Not reported | 110 | 19.8 / 3.1 | 1015.3 | 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 07:55:00 UTC, captured 2026-10-17 08:15:10.499Z; source body SHA-256
a39722f704ee162691aaecdd40de5ce5fee94d2d7f6291ad35f498846325d650. - Observed 2026-10-17 08:36:00 UTC, captured 2026-10-17 08:45:06.623Z; source body SHA-256
a3e5257dcf1bc3618e16cbe3b34c3744fe8e49bdd3fafa0fbdc0e4b1a5568c20. - Observed 2026-10-17 08:55:00 UTC, captured 2026-10-17 09:15:07.673Z; source body SHA-256
016271d991e052b4ca0bb6a0412411402fcafc0acde04052dffa85b284d7e986. - Observed 2026-10-17 09:55:00 UTC, captured 2026-10-17 10:15:07.619Z; source body SHA-256
efa29a4c0d0a7e81934e340e5f363562848208a428e561ca8ffb8afe4fee1d5d. - Observed 2026-10-17 10:55:00 UTC, captured 2026-10-17 11:15:07.064Z; source body SHA-256
7b8de7613178a73bdf0132bc79f470b3cc468514bec5c0458f7c710d68cffae8. - Observed 2026-10-17 11:55:00 UTC, captured 2026-10-17 12:15:07.983Z; source body SHA-256
f0704332759fe1131fe9887da5385e3460868b43f6138106aac1bb8c7676254c. - Observed 2026-10-17 12:55:00 UTC, captured 2026-10-17 13:15:08.402Z; source body SHA-256
235074cffed89b4cab92d4ab7ccfd328bf69ddc8588653f76dece65dfad02f56. - 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 14:55:00 UTC, captured 2026-10-17 15:15:08.165Z; source body SHA-256
03e82f238e3281188a3e527cc38fc1ce4ad8af25fe75f76604b458e9da0f511c. - 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 16:55:00 UTC, captured 2026-10-17 17:15:07.865Z; source body SHA-256
eef453fe75bb9f7371aeb86c73bf75725d6277e3652437a825018d7fc35df410. - 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 18:55:00 UTC, captured 2026-10-17 19:15:08.055Z; source body SHA-256
9b1ec8d3a0f8f89c0d1ebd7a0bd7e7ce037e6cc9a183d6538ed27218bec705c5. - 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 20:55:00 UTC, captured 2026-10-17 21:15:07.640Z; source body SHA-256
5c08daef9b0bed8ea3c5b6b7557a0f630a469dd035658cb1bb27d1dc72c4fd3d. - Observed 2026-10-17 21:55:00 UTC, captured 2026-10-17 22:15:08.810Z; source body SHA-256
08e0e95877116ded1805cae8d7e901c7e3d8d957682f02835e0dae15380c17e6. - 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 23:55:00 UTC, captured 2026-10-18 00:15:08.772Z; source body SHA-256
2e4c6ad295ac837c980c59790d7a701d3f94b395e669ad24a6f5d6eeb1bc7aaa. - 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 01:55:00 UTC, captured 2026-10-18 02:15:09.964Z; source body SHA-256
96d6803b8c6f76d1b7153a523f8f2c76dd3341c87fa0d79a41eada37a566a9a0. - 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 03:55:00 UTC, captured 2026-10-18 04:15:10.808Z; source body SHA-256
3208f6bb3bd857b2dec6e5a4113a661211834775509581ca2d816ebbf9290282. - 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 05:55:00 UTC, captured 2026-10-18 06:15:09.754Z; source body SHA-256
d6f3e8bcbd73123bac653833e25613be22b44ed899976dd1627107027cbfeb90. - Observed 2026-10-18 06:14:00 UTC, captured 2026-10-18 06:30:07.583Z; source body SHA-256
9ab6462e67c4eb5bc9bba4861248e2cbbd9c65288df1942a8f6764fe2c578731. - Observed 2026-10-18 06:55:00 UTC, captured 2026-10-18 07:15:08.677Z; source body SHA-256
faedea1b22dd965e600368b0420535bdc8168cf37050ce6169b899861ed12bb6.
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
- radar-alerts · source-revision · Recorded 2026-10-18T07:40:05.474Z
- pwpf-day1-snow-4in · source-interrupted · Recorded 2026-10-18T07:38:06.017Z
- day3-intensity · source-revision · Recorded 2026-10-18T07:35:05.808Z
- day3-probability · source-revision · Recorded 2026-10-18T07:35:05.808Z
- day3-narrative · source-revision · Recorded 2026-10-18T07:35:05.808Z
- office-hwo · source-revision · Recorded 2026-10-18T07:35:05.808Z
- day3-categorical · source-revision · Recorded 2026-10-18T07:35:05.808Z
- office-afd · source-revision · Recorded 2026-10-18T07:35:05.808Z
Recording coverage and limits
- warnings: retained from 2026-10-17T07:44:31.044Z through 2026-10-18T07:44:05.625Z
- outlooks: retained from 2026-10-17T07:44:31.044Z through 2026-10-18T07:40:05.762Z
- hydro: retained from 2026-10-17T07:44:31.044Z through 2026-10-18T07:35:05.320Z
- analysis: retained from 2026-10-17T07:44:31.044Z through 2026-10-18T07:30:06.796Z
- winter: retained from 2026-10-17T07:44:31.044Z through 2026-10-18T07:38:06.017Z
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 4River gauges in flood
No river, coastal or lake gauge in this area is in flood, observed or forecast; 1 gauge 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.
Data: NOAA/WPC, NOAA/NSSL MRMS.
Radar
NOAA’s radar for the area, loaded by your browser as on the Radar page.
Live tiles; the radar keeps no last-good copy.
What changed, last 60 minutes
since , when this server began watching this areaNothing has changed since 07:25Z.
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
- California (NWS states: CA)
- Hazards
- Flash 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
NWS warnings and SPC watches checked
NWS watches and advisories checked
WPC excessive rainfall checked
NWPS river gauges checked
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.