Data health

Storm Mode / Tracked area

Kansas, Nebraska and Oklahoma

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 06:00:00 UTC, picture retrieved 2026-10-21 16:08:06.926 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 (143)

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

    Selected details

    Close

    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.

    Recent changes

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

    Source collection activity (30)
    • wssi day3 · source revision · collected
    • wssi day2 · source revision · collected
    • wssi day1 · source revision · collected
    • radar alerts · source revision · collected
    • discussions · source revision · collected
    • gauges forecast · source revision · collected
    • gauge details · source revision · collected
    • gauges observed · source revision · collected
    • office afd · source revision · collected
    • radar alerts · source revision · collected
    • radar alerts · source revision · collected
    • day1 hail · source revision · collected

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

    Recording coverage and limits
    • warnings: retained from 2026-10-20T16:38:15.412Z through 2026-10-21T16:38:04.396Z
    • outlooks: retained from 2026-10-20T16:38:15.412Z through 2026-10-21T16:35:05.582Z
    • hydro: retained from 2026-10-20T16:38:15.412Z through 2026-10-21T16:35:06.238Z
    • analysis: retained from 2026-10-20T16:38:15.412Z through 2026-10-21T16:30:06.579Z
    • winter: retained from 2026-10-20T16:38:15.412Z through 2026-10-21T16:38:04.980Z

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

    Checks every minute; each layer keeps its own time.

    Spotlight: SPC Day 1 outlook

    1 of 15

    SPC Day 1 outlook

    • General Thunderstorms Risk
    • 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.

    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.

    Winter Storm Severity Index

    WPC: “WSSI does not depict official warnings and should always be used in context with official NWS forecasts and warnings.”

    • Winter Weather Area
    • Minor Impacts
    • Moderate Impacts
    • Major Impacts
    • Extreme Impacts

    Highest in this area, by day and by cause

    Day 1
    nothing drawn
    Day 2
    nothing drawn
    Day 3
    nothing drawn
    Snow amount, Days 1–3
    nothing drawn
    Snow load, Days 1–3
    nothing drawn
    Ice, Days 1–3
    nothing drawn
    Blowing snow, Days 1–3
    nothing drawn

    Each day and cause on the Winter tab, with its own issue time

    WPC’s WSSI, overall impact, Days 1–3, valid to , issued . WPC issues each day and cause on its own clock. Not a warning, and not a chance. Data: NOAA/NWS/WPC.

    Chance of Moderate impacts or worse, Day 1

    WPC: “WSSI does not depict official warnings and should always be used in context with official NWS forecasts and warnings.”

    • 5–10%
    • 10–20%
    • 20–30%
    • 30–40%
    • 40–50%
    • 50–60%
    • 60–70%
    • 70–80%
    • 80–90%
    • 90–95%
    • 95% or more

    Each level and day on the Winter tab

    WPC’s WSSI-P, the 24 hours to , WPC’s forecast from . Each band runs to the next. Data: NOAA/NWS/WPC.

    Chance of at least 4 inches of snow, Day 1

    WPC gives no chance of 4 inches of snow or more in this area over the next three days, so Day 1’s 4 inches is shown.

    • Slight: at least 10%
    • Moderate: at least 40%
    • High: at least 70%

    Every day and amount on the Winter tab

    WPC’s Probabilistic Winter Precipitation Forecast, to , issued . Outlines, as WPC draws them. Data: NOAA/NWS/WPC.

    Winter watches, warnings and advisories

    No winter or cold watch, warning or advisory in force in this area.

    NWS’s winter and cold alerts in force in the area, by event as issued, each counted once, with the offices that issued them and the latest end. Data: NOAA/NWS.

    Snow on the ground

    NOHRSC snow depth and snow water equivalent use the source’s original pictures and legends, with qualified footprint times. Open the cached source page for availability and retained history. This wall has no snow picture to rotate; missing imagery does not mean no snow.

    NOHRSC snow analysis and retained pictures

    Data: NOAA/NWS/NOHRSC. Snow analysis, not a measurement at a place.

    WPC’s heavy snow and icing discussion

    Southern Sierra Nevada Days 1-2

    The closed upper-low off the Southern CA coast will direct a plume of tropical moisture at the Southwest U.S. today and into Thursday. Some of this moisture source will be directed at the southern Sierra Nevada where a combination of topographically-induced upslope flow and synoptic scale support in the form of a 120kt+ 250mb jet streak will aid in enhanced precipitation rates and mountain snow. Latest 00Z HREF/REFS probabilistic guidance shows low-to-moderate chances (30-50%) for >1"/hr snowfall rates Wednesday night and into Thursday morning. These snowfall rates will be observed higher up in the southern Sierra Nevada with most areas above 9,000ft witnessing these potential snowfall rates. Snow is expected to taper off Thursday night. The Probabilistic Precipitation Portal (PPP) does show moderate-to-high chances (50-80%) for snowfall totals >6" above 9,000ft in elevation, with low chances (10-30%) for snowfall amounts exceeding 12" above 11,000ft. The WSSI shows Minor Impacts are anticipated for elevations at/above 9,000ft, indicating winter driving conditions are expected and to exercise caution when driving in at those elevations.

    ...Central Rockies... Days 2-3...

    The same closed low responsible for the heavy snow in the Sierra Nevada will work in tandem with upper-level ridging over the South Central U.S. to project an impressive IVT into the Intermountain West. By 18Z Thursday, the IVT is surpassing 500 kg/m/s in eastern AZ and eastern UT, which is surpassing the maximum observed values in the CFSR climatology (1979-2009). This highly anomalous moisture transport will upslope into various mountain ranges throughout the Intermountain West (San Juan, NV Great Basin ridge, Wasatch, Wind River, Tetons, Absaroka). Most accumulations will be on the minor side given the lack of a sufficiently cold air-mass. Thursday is the snowier day for the San Juan Mountains, while Friday is the snowier day for the mountains ranges across UT, NV, ID, southwest MT, and western WY.

    Latest PPP shows low-to-moderate chances (30-50%) for snowfall totals >6" in the more remote elevations of the San Juan, Teton, Wind River, and Absaroka Ranges. Localized snowfall amounts approaching 12" in the peaks on the San Juan Mountains are possible, especially where hourly snowfall rates >1"/hr occur. The WSSI-P shows

    The whole discussion

    Issued , for to . WPC’s words, as written. Data: NOAA/NWS/WPC.

    The tropics

    NHC’s and JTWC’s storms, their official graphics and the watches and warnings for them. Storm Mode’s own tropical panels arrive with its tropical events.

    Open the Tropics page

    Data: NOAA/NHC, JTWC.

    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
    1. SPC Day 1 outlook issued
    2. WPC excessive rainfall outlook issued

    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
    Kansas, Nebraska and Oklahoma (NWS states: KS, NE, OK)
    Hazards
    Every kind of warning, watch and advisory this site carries
    Window
    In force now, with the next days of SPC’s and WPC’s products
    Made by
    This address: anyone can make one, and nothing is stored. Change the area or hazards

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

    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 areaChange monitoring areaSource status

    Area alertsKansas, Nebraska and Oklahoma · 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.