Data health

Storm Mode · Severe weather event

Test123

Weather Operations Mode
STORM MODEWeather tracking workspace

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Alerts (0)

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No active alerts reported by the current feed in this monitoring area.

My places

Places saved on this device appear here with scripting enabled.

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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 06:00:00 UTC, picture retrieved 2026-10-28 12:23:05.528 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)
Radar-derived cells (2) · current

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

  1. HGX / W1 · scan 2026-10-28T16:34:06Z · current
  2. IAH / D0 · scan 2026-10-28T16:36:17Z · current
Station and river observations (162)

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

Details

Area brief

Tracked observation no longer available

Continuity ended, the ID changed, or the observation left the feed. Following has stopped. Choose a current candidate in the cell list; warnings remain independent.

Alert changes

Source collection activity (15)
  • office afd · source revision · collected
  • wssi day3 · source revision · collected
  • wssi blowing snow · source revision · collected
  • wssi day1 · source revision · collected
  • gauges forecast · source revision · collected
  • gauge details · source revision · collected
  • day1 categorical · source revision · collected
  • day1 wind · source revision · collected
  • day1 tornado · source revision · collected
  • hrrr · source revision · collected
  • metars · source revision · collected
  • soundings · source revision · collected

A new collection or source revision does not establish a consequential weather change.

Recording coverage and limits
  • warnings: retained from 2026-10-27T16:42:51.745Z through 2026-10-28T16:42:02.373Z
  • outlooks: retained from 2026-10-27T16:42:51.745Z through 2026-10-28T16:40:06.224Z
  • hydro: retained from 2026-10-27T16:42:51.745Z through 2026-10-28T16:35:07.075Z
  • analysis: retained from 2026-10-27T16:42:51.745Z through 2026-10-28T16:30:07.167Z
  • winter: retained from 2026-10-27T16:42:51.745Z through 2026-10-28T16:38:04.935Z

Source changes and imagery have separate recording coverage. Open Replay for retained weather frames.

Checks every minute; each layer keeps its own time.

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

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, Mixed-layer CAPE and CIN, Southern Plains region, analysis for 16Z. 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.

Instability: Mixed-layer CAPE and CIN (J/kg)

How much energy a rising parcel of air near the ground would have. More means stronger updrafts if storms form; the shaded cap (CIN) is what has to be overcome first, and storms may not form at all.

The technical reading

MLCAPE: convective available potential energy of a parcel with the mean properties of the lowest 100 mb, contoured in J/kg. MLCIN, shaded, is the convective inhibition below the level of free convection. Values over about 1,000 J/kg are moderate and over 2,500 large; under strong CIN a high CAPE can stay unused.

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

Spotlight

8 products · choose one

What changed, last 60 minutes

  1. SPC Day 1 outlook issued
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”.

Sources

Choose another storm or areaSource status

0AlertsTest123
No alerts in Test123 ·

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.