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.
Storm Mode · Severe weather event
4 warnings · 1 watch · 1 warning starts later
Checked
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.
Outlines: NOAA/NWS · Radar cells: IEM/NEXRAD. Outlines are warned areas, not storm paths.
Keys: R radar · V velocity · S satellite · O off · F fit area · L layers
Interactive imagery loads separately. Missing radar does not remove warnings or imply clear weather.
Recorded weather · gaps are marked. Coverage begins with recording activation.
Live sources keep independent clocks.
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)No product matches. Try a hazard or source name.
WPC’s excessive rainfall outlook, to , issued : a chance of flash flooding, in four categories. Data: NOAA/WPC.
Collector checked ; feed generated . Zero cells does not establish coverage or clear weather. Observations from different radars are not merged.
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 100 of 156 listed sources. All surface stations and retained trends · All supported gauges and forecasts
An area the operators chose, not a storm’s footprint: everything here is in force in this area, never “from this event”.
Every alert is in the alert list. Checked .
Places saved on this device appear here with scripting enabled.
All 7 current · alerts checked Sources
Cached lightning observations have not loaded. An empty map is not zero lightning.
Total lightning, including in-cloud activity. Not ground-strike locations or a safe-to-go-outside signal.
Stored snow depth · footprint valid 2026-11-08 09:00:00 UTC, picture retrieved 2026-11-08 17:23:06.132 UTC.
No NOHRSC picture displayed on the interactive map.

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.
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.
A new collection or source revision does not establish a consequential weather change.
Source changes and imagery have separate recording coverage. Open Replay for retained weather frames.
Curated events, as published checked
NWS warnings and SPC watches checked
NWS watches and advisories checked
SPC mesoscale discussions checked
SPC Day 1 outlook checked
WPC excessive rainfall checked
NWPS river gauges checked
Radar live tiles, no last-good copy
Checks every minute; each layer keeps its own time.
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.