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
CURRENT CONTEXT · 1 warning total · 0 tornado warnings · 1 alert including watches and advisories
Current alert feed · checked
Places saved on this device appear here with scripting enabled.
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.
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.
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.
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.

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.
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)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 144 listed sources. All surface stations and retained trends · All supported gauges and forecasts
current · Observed 2026-10-18 07:35:00 UTC · wind 0 kt · temperature 7 °C.
Station KJAS · -94.0332, 30.8904 (longitude, latitude).
Source checked 2026-10-18 07:45:06.573Z · 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: 72; 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.
Observed sea-level pressure: no readable observations.
| Observed (UTC) | Wind / gust (kt) | From (° true) | Temperature / dew point (°C) | Pressure (mb) | Visibility (mi) |
|---|---|---|---|---|---|
| 2026-10-17 07:55:00 UTC | 8 / 17 | 30 | 13 / 3 | Not reported | 10 or more |
| 2026-10-17 08:15:00 UTC | 9 / 17 | 40 | 13 / 3 | Not reported | 10 or more |
| 2026-10-17 08:35:00 UTC | 8 / 14 | 30 | 13 / 3 | Not reported | 10 or more |
| 2026-10-17 08:55:00 UTC | 6 / Not reported | 30 | 13 / 3 | Not reported | 10 or more |
| 2026-10-17 09:15:00 UTC | 8 / 14 | 20 | 12 / 4 | Not reported | 10 or more |
| 2026-10-17 09:35:00 UTC | 6 / Not reported | 20 | 12 / 4 | Not reported | 10 or more |
| 2026-10-17 09:55:00 UTC | 7 / Not reported | 10 | 12 / 4 | Not reported | 10 or more |
| 2026-10-17 10:15:00 UTC | 9 / Not reported | 20 | 12 / 4 | Not reported | 10 or more |
| 2026-10-17 10:35:00 UTC | 12 / Not reported | 10 | 12 / 4 | Not reported | 10 or more |
| 2026-10-17 10:55:00 UTC | 9 / Not reported | 20 | 12 / 4 | Not reported | 10 or more |
| 2026-10-17 11:15:00 UTC | Not reported / Not reported | Not reported | 11 / 4 | Not reported | 10 or more |
| 2026-10-17 11:35:00 UTC | 9 / Not reported | 30 | 11 / 4 | Not reported | 10 or more |
| 2026-10-17 11:55:00 UTC | 7 / Not reported | 20 | 11 / 4 | Not reported | 10 or more |
| 2026-10-17 12:15:00 UTC | 5 / Not reported | 20 | 10 / 5 | Not reported | 10 or more |
| 2026-10-17 12:35:00 UTC | 7 / Not reported | 20 | 10 / 5 | Not reported | 10 or more |
| 2026-10-17 12:55:00 UTC | 7 / 13 | 10 | 11 / 5 | Not reported | 10 or more |
| 2026-10-17 13:15:00 UTC | 6 / Not reported | 10 | 11 / 5 | Not reported | 10 or more |
| 2026-10-17 13:35:00 UTC | 7 / Not reported | 350 | 12 / 6 | Not reported | 10 or more |
| 2026-10-17 13:55:00 UTC | 8 / Not reported | 10 | 13 / 6 | Not reported | 10 or more |
| 2026-10-17 14:15:00 UTC | 8 / 15 | 40 | 14 / 6 | Not reported | 10 or more |
| 2026-10-17 14:35:00 UTC | 8 / 15 | 40 | 15 / 6 | Not reported | 10 or more |
| 2026-10-17 14:55:00 UTC | 10 / 18 | 40 | 15 / 6 | Not reported | 10 or more |
| 2026-10-17 15:15:00 UTC | 14 / 21 | 20 | 16 / 6 | Not reported | 10 or more |
| 2026-10-17 15:35:00 UTC | 8 / 20 | 40 | 16 / 5 | Not reported | 10 or more |
| 2026-10-17 15:55:00 UTC | 9 / 17 | 60 | 17 / 6 | Not reported | 10 or more |
| 2026-10-17 16:15:00 UTC | 13 / Not reported | 50 | 17 / 5 | Not reported | 10 or more |
| 2026-10-17 16:35:00 UTC | 11 / 17 | 30 | 18 / 5 | Not reported | 10 or more |
| 2026-10-17 16:55:00 UTC | 6 / 14 | Variable | 18 / 6 | Not reported | 10 or more |
| 2026-10-17 17:15:00 UTC | 8 / 17 | 20 | 19 / 5 | Not reported | 10 or more |
| 2026-10-17 17:35:00 UTC | 9 / 19 | 10 | 19 / 6 | Not reported | 10 or more |
| 2026-10-17 17:55:00 UTC | 12 / Not reported | 20 | 20 / 5 | Not reported | 10 or more |
| 2026-10-17 18:15:00 UTC | 8 / 17 | 20 | 20 / 5 | Not reported | 10 or more |
| 2026-10-17 18:35:00 UTC | 11 / Not reported | 360 | 21 / 5 | Not reported | 10 or more |
| 2026-10-17 18:55:00 UTC | 9 / 16 | 30 | 21 / 5 | Not reported | 10 or more |
| 2026-10-17 19:15:00 UTC | 11 / Not reported | 350 | 21 / 5 | Not reported | 10 or more |
| 2026-10-17 19:35:00 UTC | 10 / Not reported | 40 | 21 / 5 | Not reported | 10 or more |
| 2026-10-17 19:55:00 UTC | 9 / 16 | 40 | 22 / 4 | Not reported | 10 or more |
| 2026-10-17 20:15:00 UTC | 10 / Not reported | 50 | 22 / 4 | Not reported | 10 or more |
| 2026-10-17 20:35:00 UTC | 9 / Not reported | 60 | 22 / 5 | Not reported | 10 or more |
| 2026-10-17 20:55:00 UTC | 11 / Not reported | 50 | 22 / 4 | Not reported | 10 or more |
| 2026-10-17 21:15:00 UTC | 11 / 16 | 360 | 21 / 4 | Not reported | 10 or more |
| 2026-10-17 21:35:00 UTC | 8 / 17 | 20 | 21 / 5 | Not reported | 10 or more |
| 2026-10-17 21:55:00 UTC | 11 / Not reported | 20 | 21 / 4 | Not reported | 10 or more |
| 2026-10-17 22:15:00 UTC | 6 / 15 | 20 | 21 / 5 | Not reported | 10 or more |
| 2026-10-17 22:35:00 UTC | 8 / 14 | 40 | 21 / 5 | Not reported | 10 or more |
| 2026-10-17 22:55:00 UTC | 8 / Not reported | 30 | 20 / 5 | Not reported | 10 or more |
| 2026-10-17 23:15:00 UTC | 7 / 12 | 30 | 19 / 5 | Not reported | 10 or more |
| 2026-10-17 23:35:00 UTC | 8 / Not reported | 20 | 18 / 5 | Not reported | 10 or more |
| 2026-10-17 23:55:00 UTC | 5 / 10 | 10 | 17 / 5 | Not reported | 10 or more |
| 2026-10-18 00:15:00 UTC | 5 / Not reported | 360 | 15 / 6 | Not reported | 10 or more |
| 2026-10-18 00:35:00 UTC | 5 / Not reported | 360 | 14 / 6 | Not reported | 10 or more |
| 2026-10-18 00:55:00 UTC | 4 / Not reported | 360 | 14 / 6 | Not reported | 10 or more |
| 2026-10-18 01:15:00 UTC | 6 / Not reported | 360 | 13 / 6 | Not reported | 10 or more |
| 2026-10-18 01:35:00 UTC | 5 / Not reported | 360 | 13 / 6 | Not reported | 10 or more |
| 2026-10-18 01:55:00 UTC | 5 / Not reported | 10 | 13 / 6 | Not reported | 10 or more |
| 2026-10-18 02:15:00 UTC | 5 / Not reported | 10 | 13 / 6 | Not reported | 10 or more |
| 2026-10-18 02:35:00 UTC | 5 / Not reported | 20 | 13 / 6 | Not reported | 10 or more |
| 2026-10-18 02:55:00 UTC | 0 / Not reported | Calm | 13 / 6 | Not reported | 10 or more |
| 2026-10-18 03:15:00 UTC | 0 / Not reported | Calm | 12 / 7 | Not reported | 10 or more |
| 2026-10-18 03:35:00 UTC | 0 / Not reported | Calm | 12 / 6 | Not reported | 10 or more |
| 2026-10-18 03:55:00 UTC | 0 / Not reported | Calm | 12 / 6 | Not reported | 10 or more |
| 2026-10-18 04:15:00 UTC | 0 / Not reported | Calm | 11 / 7 | Not reported | 10 or more |
| 2026-10-18 04:35:00 UTC | 0 / Not reported | Calm | 10 / 8 | Not reported | 10 or more |
| 2026-10-18 04:55:00 UTC | 0 / Not reported | Calm | 10 / 7 | Not reported | 10 or more |
| 2026-10-18 05:15:00 UTC | 0 / Not reported | Calm | 9 / 7 | Not reported | 10 or more |
| 2026-10-18 05:35:00 UTC | 0 / Not reported | Calm | 9 / 7 | Not reported | 10 or more |
| 2026-10-18 05:55:00 UTC | 0 / Not reported | Calm | 9 / 8 | Not reported | 10 or more |
| 2026-10-18 06:15:00 UTC | 0 / Not reported | Calm | 8 / 7 | Not reported | 10 or more |
| 2026-10-18 06:35:00 UTC | 0 / Not reported | Calm | 8 / 7 | Not reported | 10 or more |
| 2026-10-18 06:55:00 UTC | 0 / Not reported | Calm | 8 / 7 | Not reported | 10 or more |
| 2026-10-18 07:15:00 UTC | 0 / Not reported | Calm | 8 / 7 | Not reported | 10 or more |
| 2026-10-18 07:35:00 UTC | 0 / Not reported | Calm | 7 / 7 | Not reported | 10 or more |
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.
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Observation source page · Cached readings as JSON · Official source
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.
Current cached context, independently dated. Regional reference: TX; 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.
REFS · Rotating storms · initialized · valid
REFS: Feed current; checked .
HRRR: Feed current; checked .
Checked means retrieved, not newly issued. Each graphic retains its issue, observation, initialization or valid time. Site publishing status is separate.
How many of the ensemble’s members grow a storm with a strongly rotating updraft near each point in the hour: the model’s sign of a supercell, which can bring tornadoes, large hail and damaging wind.
A forecast’s own uncertainty, not a forecast of coverage: REFS is a set of runs of NCEP’s RRFS model, each started a little differently, and the share is how many of them put the event near a point. 30% is three runs in ten. It is guidance forecasters weigh, not SPC’s outlook and not a warning.
In Texas: under 10% of members anywhere in the state.
Highest anywhere in the hour: 45.5% of members.
Pre-operational: NCEP’s parallel REFS, which it plans to make operational on 3 November 2026 (Service Change Notice 26-48). Until then it may be late, missing or changed without notice.
Only rolling current frames and limited previous copies are retained. Complete historical runs are not archived, so two-run comparison is unavailable. Only the published forecast hours are stepped; gaps are explicit. Rainfall uses WPC’s existing forecast, not an unprovided model rainfall field.
REFS (NOMADS) checked · Data: NOAA/NCEP
HRRR pictures (MAG) checked · Data: NOAA/NCEP
WPC’s excessive rainfall outlook, to , issued : a chance of flash flooding, in four categories. Data: NOAA/WPC.
0 major · 0 moderate · 1 minor · 3 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.
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.
SPC’s Day 1 categorical outlook, valid to , issued . SPC’s categories, as drawn. Data: NOAA/SPC.
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.
No mesoscale discussion reaches this area.
SPC’s mesoscale discussions whose outline reaches the area. Data: NOAA/SPC.
SPC’s hourly mesoanalysis, observed soundings and model guidance for the area, on the Analysis tab with its own clocks.
Drawn by the Analysis tab’s own renderer. Data: NOAA/SPC, NOAA/NCEP.
NOAA’s radar for the area, loaded by your browser as on the Radar page.
Live tiles; the radar keeps no last-good copy.
Nothing has changed since 07:23Z.
The products’ own words and times, and what is no longer in force since the last read. Never written by AI.
An area the operators chose, not a storm’s footprint: everything here is in force in this area, never “from this event”.
Most urgent first, by the Briefing’s ranking. Checked .
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
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.