Data health

Storm Mode · Severe weather event

Test123

Weather Operations Mode
STORM MODEWeather tracking workspace

0 alerts in effect · 0 upcoming · 0 warnings

Current alert feed · checked

Alerts in area

0 of 0 alerts

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

Watched 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.

Alert outlines: NOAA/NWS; cell points/observed segments: IEM/NEXRAD. A warning polygon is not a tornado footprint.

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 2026-10-21 12:00:00 UTC, picture retrieved 2026-10-21 18:08:05.550 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 (0) · current

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

    Station and river observations (154)

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

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    Surface station KATT

    unavailable · No observation in the latest cached source list. Retained readings below are historical; an absent gauge may have fallen below action stage or stopped reporting.

    Station KATT · -97.7604, 30.3208 (longitude, latitude).

    Source checked 2026-10-21 18:45:06.326Z · 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: 3; target 24 hours, at most 96 reports per station. Recording began 2026-10-17 06:15:07.108Z; oldest available reading 2026-10-21 14:51:00 UTC.

    Observed sustained wind at KATT (kt)Dots are retained observations. Lines break for missing fields, long intervals or changed station location or units. 0 recorded discontinuities. Dashed lines, when present, are the separately issued NWS forecast.5-1kt10-21 14:51Z10-21 16:51Z2026-10-21 14:51:00 UTC · 0 kt2026-10-21 15:51:00 UTC · 4 kt2026-10-21 16:51:00 UTC · 3 kt
    Observed sustained wind · 3 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.
    Temperature, dew point and pressure trends
    Observed temperature at KATT (°C)Dots are retained observations. Lines break for missing fields, long intervals or changed station location or units. 0 recorded discontinuities. Dashed lines, when present, are the separately issued NWS forecast.25.417.9°C10-21 14:51Z10-21 16:51Z2026-10-21 14:51:00 UTC · 18.9 °C2026-10-21 15:51:00 UTC · 22.8 °C2026-10-21 16:51:00 UTC · 24.4 °C
    Observed temperature · 3 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.
    Observed dew point at KATT (°C)Dots are retained observations. Lines break for missing fields, long intervals or changed station location or units. 0 recorded discontinuities. Dashed lines, when present, are the separately issued NWS forecast.12.79°C10-21 14:51Z10-21 16:51Z2026-10-21 14:51:00 UTC · 10 °C2026-10-21 15:51:00 UTC · 11.7 °C2026-10-21 16:51:00 UTC · 11.1 °C
    Observed dew point · 3 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.
    Observed sea-level pressure at KATT (mb)Dots are retained observations. Lines break for missing fields, long intervals or changed station location or units. 0 recorded discontinuities. Dashed lines, when present, are the separately issued NWS forecast.1024.11021.8mb10-21 14:51Z10-21 16:51Z2026-10-21 14:51:00 UTC · 1023.1 mb2026-10-21 15:51:00 UTC · 1023 mb2026-10-21 16:51:00 UTC · 1022.8 mb
    Observed sea-level pressure · 3 retained observations; 0 discontinuities. Lines join reported values only; missing intervals are not interpolated.
    Observed reports as a table (3)
    Observed (UTC)Wind / gust (kt)From (° true)Temperature / dew point (°C)Pressure (mb)Visibility (mi)
    2026-10-21 14:51:00 UTC0 / Not reportedCalm18.9 / 101023.110 or more
    2026-10-21 15:51:00 UTC4 / Not reported10022.8 / 11.7102310 or more
    2026-10-21 16:51:00 UTC3 / Not reportedVariable24.4 / 11.11022.810 or more
    Capture times, quality and provenance

    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.

    • Observed 2026-10-21 14:51:00 UTC, captured 2026-10-21 15:00:09.558Z; source body SHA-256 d898ced33868831ba376a24483615f10c981b677630d6a208f8c9b179e4c84aa.
    • Observed 2026-10-21 15:51:00 UTC, captured 2026-10-21 16:00:07.953Z; source body SHA-256 f0abea70cb19d7daf53a0e2921b7046350b24cbcd25b70e48fbc07e371d6835c.
    • Observed 2026-10-21 16:51:00 UTC, captured 2026-10-21 17:00:08.030Z; source body SHA-256 201fa83f28cb177cfac07b4de9ff9e7e2623a687408dd0edb1259f6d53905d74.

    Values use the decoded station report. Null means not reported, never zero. Gust is kept separate from sustained wind.

    Observation source page · Cached readings as JSON · Official source

    Recent changes

    No retained alert changes in this monitoring area. This is not proof that nothing changed.

    Source collection activity (30)
    • office hwo · source revision · collected
    • office afd · source revision · collected
    • gauges observed · source revision · collected
    • radar alerts · source revision · collected
    • radar alerts · source revision · collected
    • radar alerts · source revision · collected
    • metars · source revision · collected
    • soundings · source revision · collected
    • gauges forecast · source revision · collected
    • gauge details · source revision · collected
    • office hwo · source revision · collected
    • office afd · source revision · collected

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

    Recording coverage and limits
    • warnings: retained from 2026-10-20T18:58:05.524Z through 2026-10-21T18:58:02.359Z
    • outlooks: retained from 2026-10-20T18:58:05.524Z through 2026-10-21T18:55:06.087Z
    • hydro: retained from 2026-10-20T18:58:05.524Z through 2026-10-21T18:55:04.618Z
    • analysis: retained from 2026-10-20T18:58:05.524Z through 2026-10-21T18:45:10.363Z
    • winter: retained from 2026-10-20T18:58:05.524Z through 2026-10-21T18:53:04.252Z

    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.

    Soundings: what weather balloons measured

    SPC’s skew-T diagram and hodograph of the sounding at Wilmington, OH (ILN), 12Z. Its levels are in the table below.
    Observed Sounding at Wilmington, OH (ILN), for (6 h 58 min ago). SPC’s graphic; the values in its panels (CAPE, shear, the indices) are SPC’s computations from these levels. Data: NOAA/SPC.

    A balloon launched about an hour before the time named, measuring as it rose and drifted with the wind: the atmosphere above one place, at one time. Model soundings, which are forecasts, are not shown here.

    The levels this sounding was drawn from (61)
    Wilmington, OH (ILN): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
    PressureHeightTemperatureDew pointWind
    987 mb317 m4.24.2060° 2 kt
    977 mb403 m9.45.2120° 6 kt
    966 mb499 m15.26.2—
    936 mb770 m13.33.8070° 2 kt
    925 mb871 m12.43.4050° 2 kt
    912 mb990 m11.63.6—
    902 mb1082 m11.31.2005° 5 kt
    869 mb1393 m10.9-5.3350° 7 kt
    859 mb1489 m10.8-7.2—
    850 mb1577 m10.2-4.8005° 10 kt
    834 mb1734 m8.9-4.9350° 11 kt
    824 mb1834 m8.2-5.0345° 9 kt
    803 mb2046 m6.8-6.7000° 12 kt
    781 mb2273 m5.3-8.6010° 14 kt
    766 mb2432 m5.0-14.0—
    751 mb2592 m4.6-19.6040° 5 kt
    722 mb2911 m2.3-18.6080° 7 kt
    712 mb3024 m1.3-18.7085° 5 kt
    700 mb3160 m0.2-19.8095° 7 kt
    686 mb3322 m-1.1-20.1—
    674 mb3463 m-1.3-22.3085° 6 kt
    645 mb3813 m-1.7-29.7—
    633 mb3963 m-1.5-27.5—
    622 mb4102 m-2.7-24.1315° 5 kt
    605 mb4322 m-4.4-24.3000° 2 kt
    571 mb4776 m-6.5-33.5—
    556 mb4982 m-8.0-32.2345° 11 kt
    541 mb5194 m-9.6-30.9355° 12 kt
    520 mb5500 m-11.9-28.9—
    504 mb5739 m-13.5-29.7330° 9 kt
    500 mb5800 m-13.9-29.9335° 7 kt
    485 mb6029 m-16.0-31.0320° 5 kt
    472 mb6231 m-17.5-32.9315° 7 kt
    458 mb6455 m-19.2-35.1330° 5 kt
    447 mb6634 m-20.6-33.1305° 6 kt
    437 mb6800 m-21.9-30.9—
    404 mb7368 m-26.7-34.9245° 2 kt
    400 mb7440 m-27.3-35.3195° 4 kt
    383 mb7751 m-28.6-40.9260° 6 kt
    372 mb7959 m-29.5-44.7270° 8 kt
    351 mb8373 m-31.6-50.2305° 15 kt
    333 mb8742 m-34.0-51.5290° 17 kt
    320 mb9021 m-35.7-52.4295° 21 kt
    309 mb9266 m-37.3-53.3—
    300 mb9470 m-38.3-54.3300° 17 kt
    279 mb9968 m-38.8-56.2305° 14 kt
    268 mb10245 m-39.1-57.1—
    251 mb10693 m-40.6-58.6330° 26 kt
    250 mb10720 m-40.7-58.7325° 25 kt
    228 mb11344 m-43.3-61.3325° 24 kt
    216 mb11707 m-45.0-63.0325° 22 kt
    206 mb12023 m-46.3-63.5310° 26 kt
    200 mb12220 m-47.1-64.1320° 26 kt
    186 mb12692 m-50.1-66.6315° 23 kt
    165 mb13465 m-54.8-70.2310° 27 kt
    152 mb13986 m-57.6-71.8325° 31 kt
    150 mb14070 m-58.1-72.1325° 31 kt
    138 mb14592 m-60.9-74.0315° 31 kt
    114 mb15761 m-65.2-77.6320° 25 kt
    103 mb16381 m-67.5-79.5330° 31 kt
    100 mb16560 m-67.7-78.7325° 27 kt
    Every station with a sounding (76)

    SPC observed soundings checked · Data: NOAA/SPC

    Spotlight: SPC Day 1 outlook

    1 of 8

    SPC Day 1 outlook

    • General Thunderstorms Risk highest in this area
    • Marginal Risk
    • Slight Risk
    • Enhanced Risk

    SPC’s Day 1 categorical outlook, valid to , issued . SPC’s categories, as drawn. Data: NOAA/SPC.

    Watches

    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.

    Mesoscale discussions

    No mesoscale discussion reaches this area.

    SPC’s mesoscale discussions whose outline reaches the area. Data: NOAA/SPC.

    Storm ingredients

    SPC’s hourly mesoanalysis, observed soundings and model guidance for the area, on the Analysis tab with its own clocks.

    Open the Analysis tab

    Drawn by the Analysis tab’s own renderer. Data: NOAA/SPC, NOAA/NCEP.

    Flash-flood risk, Day 1

    • Marginal
    • Slight
    • Slight
    • Slight

    WPC’s excessive rainfall outlook, to , issued : a chance of flash flooding, in four categories. Data: NOAA/WPC.

    River gauges in flood

    No river, coastal or lake gauge in this area is in flood, observed or forecast; 2 gauges 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.

    Rain expected and rain that fell

    WPC’s rain forecast and MRMS’s radar estimate of the rain that fell, on the Briefing’s map for the area.

    Open Rain & rivers

    Data: NOAA/WPC, NOAA/NSSL MRMS.

    Radar

    NOAA’s radar for the area, loaded by your browser as on the Radar page.

    Open the radar

    Live tiles; the radar keeps no last-good copy.

    What changed, last 60 minutes

    since , when this server began watching this area

    Nothing has changed since 18:25Z.

    The products’ own words and times, and what is no longer in force since the last read. Never written by AI.

    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

    Area alertsTest123 · 0 alerts
    No active alerts reported in this monitoring area.
    Checked

    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.