Data health
STORM MODEWeather tracking workspace

Storm Mode · Severe weather event

Test123

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Weather Operations Mode
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Layers

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
North ↑

Interactive imagery loads separately. Missing radar does not remove warnings or imply clear weather.

Outlines: NOAA/NWS · Radar cells: IEM/NEXRAD. Outlines are warned areas, not storm paths.

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 2026-10-28 12:00:00 UTC, picture retrieved 2026-10-28 18:08:05.975 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 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

Recorded weather · gaps are marked. Coverage begins with recording activation.

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)

Analysis and guidance

Choose product

Current weather

ReportsAnalysis and guidanceRadar

Observations

Coastal observationsRadar-derived cellsStations and river gauges

Severe storms

SPC Day 1 outlookWatchesMesoscale discussions

Rain and flooding

Flash-flood risk, Day 1River gauges in floodRain expected and rain that fell

Analysis

Area, source times and interpretation

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.

Model guidance: what the models forecast

REFS · Rotating storms · initialized · valid

REFS / HRRR: feeds current

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.

Forecast REFS run , hour +9, valid . Chance of a rotating updraft nearby (2–5 km updraft helicity over 75 m²/s² in the hour). Data: NOAA/NCEP.

Rotating storms

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.

Share of members

  • 10–30%
  • 30–50%
  • 50–70%
  • 70–90%
  • 90% or more
  • under 10%: not drawn

In Texas: up to about 10–30% of members somewhere in the state, not everywhere.

Highest anywhere in the hour: 81% 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.

Compare REFS and HRRR context
Model, field & forecast hours
Retention & comparison limits

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

Radar-derived cells (10) · current

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

  1. CRP / A6 · scan 2026-10-28T18:30:06Z · current
  2. CRP / M4 · scan 2026-10-28T18:30:06Z · current
  3. CRP / V5 · scan 2026-10-28T18:30:06Z · current
  4. EWX / D0 · scan 2026-10-28T18:32:00Z · current
  5. EWX / E0 · scan 2026-10-28T18:32:00Z · current
  6. GRK / C0 · scan 2026-10-28T18:33:48Z · current
  7. HGX / J2 · scan 2026-10-28T18:29:51Z · current
  8. HGX / M2 · scan 2026-10-28T18:29:51Z · current
  9. HGX / N2 · scan 2026-10-28T18:29:51Z · current
  10. IAH / S0 · scan 2026-10-28T18:32:07Z · current
Station and river observations (160)

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 160 listed sources. All surface stations and retained trends · All supported gauges and forecasts

About this monitored event

This event, as this site’s operators set it up

Kind
Severe weather
Window
Open: no start or end was set
Updated

Spotlight

8 products · choose one
Monitoring area details
Area
Texas (NWS states: TX)
Hazards
Tornado, severe thunderstorm, flash flood, river flood, areal flood, coastal flood and other 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 site’s operators, in its admin console. Nothing about a reader is stored. Watch another area

An area the operators chose, not a storm’s footprint: everything here is in force in this area, never “from this event”.

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”.

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