Data health
STORM MODEWeather tracking workspace

Storm Mode · Severe weather event

Test123

4 warnings

Checked

Weather Operations Mode
More
Choose another storm or areaClassic view
Weather Operations Mode
Agency warning geometry · no observed imagery displayed

Map

  • Flood Warning 4

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.

North ↑
ⓘ About this map

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

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

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

Rain and flooding

Flash-flood risk, Day 1River gauges in floodRain expected and rain that fell
All products · 3 more

Severe storms

SPC Day 1 outlookWatchesMesoscale discussions

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.

Storm ingredients: SPC’s hourly analysis

SPC mesoanalysis map, Significant tornado parameter (effective layer), Southern Plains region, analysis for 09Z. Its key and units are in SPC’s picture; what it shows is described beside it.
Analysis SPC mesoanalysis for . The Southern Plains region. Data: NOAA/SPC.

Tornado index: Significant tornado parameter (effective layer) (no units)

An index SPC combines from instability, cloud-base height, shear and low-level spin. Above 1 the environment has looked like those of strong tornadoes. It is not a tornado forecast and says nothing where storms do not form.

The technical reading

Effective-layer STP, with CIN: (MLCAPE / 1500 J/kg) × ((2000 − MLLCL) / 1000 m) × (effective SRH / 150 m²/s²) × (effective bulk shear / 20 m/s) × ((200 + MLCIN) / 150 J/kg), with SPC’s limits, dimensionless. Most significant tornadoes have occurred with values above 1 in an environment with supercells.

An ingredient, not a forecast: SPC’s analysis of the hour, from observations and a short-range model’s first guess. No one value is a warning or an outcome; storms need several ingredients together, and something to start them.

SPC mesoanalysis checked · Data: NOAA/SPC

Radar-derived cells (21) · current

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

  1. BRO / O3 · scan 2026-11-10T09:09:33Z · stale
  2. CRP / B0 · scan 2026-11-10T09:11:04Z · current
  3. CRP / C4 · scan 2026-11-10T09:11:04Z · current
  4. CRP / E3 · scan 2026-11-10T09:11:04Z · current
  5. CRP / N4 · scan 2026-11-10T09:11:04Z · current
  6. CRP / N5 · scan 2026-11-10T09:11:04Z · current
  7. DYX / Q4 · scan 2026-11-10T09:12:37Z · current
  8. EWX / B3 · scan 2026-11-10T09:12:14Z · current
  9. EWX / C8 · scan 2026-11-10T09:12:14Z · current
  10. EWX / P9 · scan 2026-11-10T09:12:14Z · current
  11. FWS / E0 · scan 2026-11-10T09:11:33Z · current
  12. GRK / S6 · scan 2026-11-10T09:13:02Z · current
  13. HGX / H9 · scan 2026-11-10T09:06:06Z · stale
  14. HGX / M9 · scan 2026-11-10T09:06:06Z · stale
  15. HGX / S9 · scan 2026-11-10T09:06:06Z · stale
  16. HGX / U9 · scan 2026-11-10T09:06:06Z · stale
  17. HGX / W9 · scan 2026-11-10T09:06:06Z · stale
  18. LCH / F0 · scan 2026-11-10T09:11:12Z · current
  19. LCH / V0 · scan 2026-11-10T09:11:12Z · current
  20. POE / L0 · scan 2026-11-10T09:12:16Z · current
  21. SHV / D0 · scan 2026-11-10T09:12:38Z · current
Station and river observations (159)

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 159 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”.

Alerts in this area 4

  1. Flood Warning4until 11 Nov 12:00Z

Every alert is in the alert list. Checked .

My places

Places saved on this device appear here with scripting enabled.

Find or save a place
4AlertsTest123
Flood WarningVal Verde County, TXuntil Flood WarningMason County, TXuntil Flood WarningJunctionuntil Flood WarningMarble Falls · Granite Shoals · Llanountil