Flash-flood risk, Day 1
- Marginal
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 03:00:00 UTC, picture retrieved 2026-10-18 11:23:06.757 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 ·
- KCIC · KCIC · 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 ·
- 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 ·
- KLAX · KLAX · 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 ·
- 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 KMCE
current · Observed 2026-10-18 11:53:00 UTC · wind 0 kt · temperature 13.9 °C.
Station KMCE · -120.5179, 37.286 (longitude, latitude).
Source checked 2026-10-18 12:00:05.591Z · 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: 24; target 24 hours, at most 96 reports per station. Recording began 2026-10-17 06:15:07.108Z; oldest available reading 2026-10-17 12:53:00 UTC.
Temperature, dew point and pressure trends
Observed reports as a table (24)
| Observed (UTC) | Wind / gust (kt) | From (° true) | Temperature / dew point (°C) | Pressure (mb) | Visibility (mi) |
|---|---|---|---|---|---|
| 2026-10-17 12:53:00 UTC | 3 / Not reported | 100 | 11.1 / 5 | 1017.9 | 10 or more |
| 2026-10-17 13:53:00 UTC | 4 / Not reported | 30 | 12.2 / 4.4 | 1017.9 | 10 or more |
| 2026-10-17 14:53:00 UTC | 4 / Not reported | 210 | 12.2 / 3.9 | 1018 | 10 or more |
| 2026-10-17 15:53:00 UTC | 0 / Not reported | Calm | 15.6 / 4.4 | 1018.6 | 10 or more |
| 2026-10-17 16:53:00 UTC | 0 / Not reported | Calm | 20.6 / 3.9 | 1018.5 | 10 or more |
| 2026-10-17 17:53:00 UTC | 0 / Not reported | Calm | 25 / 2.2 | 1018.1 | 10 or more |
| 2026-10-17 18:53:00 UTC | 0 / Not reported | Calm | 27.8 / 3.3 | 1017.4 | 10 or more |
| 2026-10-17 19:53:00 UTC | 4 / Not reported | 340 | 29.4 / 5.6 | 1016.5 | 10 or more |
| 2026-10-17 20:53:00 UTC | 4 / Not reported | 320 | 31.1 / 5.6 | 1015.3 | 10 or more |
| 2026-10-17 21:53:00 UTC | 0 / Not reported | Calm | 32.8 / 1.1 | 1014.2 | 10 or more |
| 2026-10-17 22:53:00 UTC | Not reported / Not reported | Not reported | 32.8 / 1.7 | 1013.6 | 10 or more |
| 2026-10-17 23:53:00 UTC | 7 / Not reported | 330 | 32.2 / 4.4 | 1013.3 | 10 or more |
| 2026-10-18 00:53:00 UTC | 6 / Not reported | 340 | 28.3 / 6.1 | 1013 | 10 or more |
| 2026-10-18 01:53:00 UTC | 3 / Not reported | 360 | 25 / 7.8 | 1013.2 | 10 or more |
| 2026-10-18 02:53:00 UTC | 0 / Not reported | Calm | 23.9 / 7.8 | 1013.8 | 10 or more |
| 2026-10-18 03:53:00 UTC | 0 / Not reported | Calm | 20 / 8.9 | 1013.7 | 10 or more |
| 2026-10-18 04:53:00 UTC | 0 / Not reported | Calm | 21.1 / 8.3 | 1014 | 10 or more |
| 2026-10-18 05:53:00 UTC | 4 / Not reported | 200 | 18.3 / 8.9 | 1014.4 | 10 or more |
| 2026-10-18 06:53:00 UTC | 0 / Not reported | Calm | 15.6 / 8.3 | 1014.4 | 10 or more |
| 2026-10-18 07:53:00 UTC | 0 / Not reported | Calm | 16.1 / 9.4 | 1014.2 | 10 or more |
| 2026-10-18 08:53:00 UTC | 0 / Not reported | Calm | 15 / 9.4 | 1014 | 10 or more |
| 2026-10-18 09:53:00 UTC | 3 / Not reported | 100 | 15 / 7.8 | 1014.1 | 10 or more |
| 2026-10-18 10:53:00 UTC | 0 / Not reported | Calm | 12.8 / 6.7 | 1013.9 | 10 or more |
| 2026-10-18 11:53:00 UTC | 0 / Not reported | Calm | 13.9 / 5.6 | 1013.9 | 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 12:53:00 UTC, captured 2026-10-17 13:00:09.198Z; source body SHA-256
aa321e5db523e4ae79b5eb84e3edd54688a5b7f83f8b9534cd752d4abe9a07e1. - Observed 2026-10-17 13:53:00 UTC, captured 2026-10-17 14:00:06.148Z; source body SHA-256
eddc6593eb288cbf6f6e163ab9b2a8e2d83da18452c1b5ac1e3855ebb2db91be. - Observed 2026-10-17 14:53:00 UTC, captured 2026-10-17 15:00:06.490Z; source body SHA-256
fd6f39df63ed66d82a0d722d3ba639a811bb9e87f6416735ea4ec817c4b69f7b. - Observed 2026-10-17 15:53:00 UTC, captured 2026-10-17 16:00:07.184Z; source body SHA-256
011c3be17b8bb37fe5f6ec9648267ed81c7e9853e6a8b98b8ad0bb065dff5968. - Observed 2026-10-17 16:53:00 UTC, captured 2026-10-17 17:00:06.696Z; source body SHA-256
b8be3a3f9dbb0f9d47f7f7d56c511352303f71121022093aee1718b59882e480. - Observed 2026-10-17 17:53:00 UTC, captured 2026-10-17 18:00:07.907Z; source body SHA-256
87f841dd0eda299799ecfa27669c14712906e9b7f2462af1e9aaebc60f5a4644. - 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.
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 2026-10-18T12:11:03.693Z
- office-afd · source-revision · Recorded 2026-10-18T12:10:05.566Z
- office-hwo · source-revision · Recorded 2026-10-18T12:10:05.566Z
- radar-alerts · source-revision · Recorded 2026-10-18T12:06:02.920Z
- gauges-observed · source-revision · Recorded 2026-10-18T12:05:04.752Z
- radar-alerts · source-revision · Recorded 2026-10-18T12:00:09.545Z
- hrrr · source-revision · Recorded 2026-10-18T12:00:08.069Z
- metars · source-revision · Recorded 2026-10-18T12:00:08.069Z
Recording coverage and limits
- warnings: retained from 2026-10-17T12:12:53.368Z through 2026-10-18T12:12:03.233Z
- outlooks: retained from 2026-10-17T12:12:53.368Z through 2026-10-18T12:10:05.566Z
- hydro: retained from 2026-10-17T12:12:53.368Z through 2026-10-18T12:05:04.752Z
- analysis: retained from 2026-10-17T12:12:53.368Z through 2026-10-18T12:00:08.069Z
- winter: retained from 2026-10-17T12:12:53.368Z through 2026-10-18T12:08:04.455Z
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 12:12Z.
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.