Data health

Storm Mode / Tracked area

Coastal flooding: Virginia

Wall mode

3 warnings total · 0 tornado warnings · 12 alerts including watches and advisories

Current alert feed · checked

Change time or forecast product

Replay uses retained source bytes. Recording begins with activation; missing history is not clear weather.

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.

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Warnings in area

12 of 12 alerts
  1. Freeze WarningWashington; Frederick; Carroll; Northern Baltimore; Extreme Western Allegany; Central and Eastern Allegany; Northwest Harford; Western Garrett; Eastern Garrett; Augusta; Rockingham; Shenandoah; Frederick; Page; Warren; Clarke; Western Highland; Eastern Highland; Western Loudoun; Northern Virginia Blue Ridge; Central Virginia Blue Ridge; Hampshire; Morgan; Berkeley; Jefferson; Hardy; Western Grant; Eastern Grant; Western Mineral; Eastern Mineral; Western Pendleton; Eastern PendletonNWS Baltimore MD/Washington DC · until warning · alerts checked
  2. Freeze WarningGreenup; Carter; Boyd; Lawrence; Perry; Morgan; Athens; Washington; Jackson; Vinton; Meigs; Gallia; Lawrence; Dickenson; Buchanan; Wayne; Cabell; Mason; Jackson; Wood; Pleasants; Tyler; Lincoln; Putnam; Kanawha; Roane; Wirt; Calhoun; Ritchie; Doddridge; Mingo; Logan; Boone; Clay; Braxton; Gilmer; Lewis; Harrison; Taylor; McDowell; Wyoming; Upshur; Barbour; Northwest Raleigh; Southeast Raleigh; Northwest Fayette; Southeast Fayette; Northwest Nicholas; Southeast Nicholas; Northwest Webster; Southeast Webster; Northwest Pocahontas; Southeast Pocahontas; Northwest Randolph; Southeast RandolphNWS Charleston WV · until warning · alerts checked
  3. Freeze WarningAshe; Alleghany; Watauga; Tazewell; Smyth; Bland; Giles; Wythe; Pulaski; Montgomery; Grayson; Carroll; Floyd; Craig; Alleghany; Bath; Mercer; Summers; Monroe; Eastern Greenbrier; Western GreenbrierNWS Blacksburg VA · until warning · alerts checked
  4. Coastal Flood WatchInland WorcesterNWS Wakefield VA · until watch · radar-alerts checked
  5. Coastal Flood WatchMaryland Beaches; Accomack; NorthamptonNWS Wakefield VA · until watch · radar-alerts checked
  6. Coastal Flood WatchEastern CurrituckNWS Wakefield VA · until watch · radar-alerts checked
  7. Coastal Flood WatchSurry; James City; Newport News; Isle of WightNWS Wakefield VA · until watch · radar-alerts checked
  8. Coastal Flood WatchChesapeake; Suffolk; Norfolk; PortsmouthNWS Wakefield VA · until watch · radar-alerts checked
  9. Coastal Flood WatchVirginia BeachNWS Wakefield VA · until watch · radar-alerts checked
  10. Frost AdvisoryEstill; Powell; Menifee; Rockcastle; Jackson; Pulaski; Laurel; Wayne; McCreary; Whitley; Knox; Bell; Harlan; Elliott; Morgan; Johnson; Wolfe; Magoffin; Floyd; Lee; Breathitt; Knott; Owsley; Perry; Clay; Leslie; Letcher; Martin; PikeNWS Jackson KY · until advisory · radar-alerts checked
  11. Frost AdvisorySurry; Wilkes; Roanoke; Botetourt; Rockbridge; Patrick; Franklin; Bedford; AmherstNWS Blacksburg VA · until advisory · radar-alerts checked
  12. Frost AdvisoryNorthwest Montgomery; Northwest Howard; Nelson; Albemarle; Greene; Madison; Rappahannock; Orange; Culpeper; Northern Fauquier; Southern Fauquier; Eastern Loudoun; Northwest Prince WilliamNWS Baltimore MD/Washington DC · until advisory · radar-alerts checked

Watched places

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Layers

Map

  • Coastal Flood Watch 6

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
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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 2026-10-17 06:00:00 UTC, picture retrieved 2026-10-17 12:23:04.664 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

Radar-derived cells (0) · unavailable

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

    Station and river observations (80)

    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 80 of 80 listed sources. All surface stations and retained trends · All supported gauges and forecasts

    Selected details

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    Surface station KNGU

    current · Observed 2026-10-17 13:13:00 UTC · wind 18 kt, gust 30 kt · temperature 15.6 °C.

    Station KNGU · -76.281, 36.937 (longitude, latitude).

    Source checked 2026-10-17 13:30:04.380Z · 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: 4; target 24 hours, at most 96 reports per station. Recording began 2026-10-17 06:15:07.108Z; oldest available reading 2026-10-17 05:59:00 UTC.

    Observed sustained wind at KNGU (kt)Dots are retained observations. Lines break for missing fields, long intervals or changed station location or units. 1 recorded discontinuities. Dashed lines, when present, are the separately issued NWS forecast.199kt10-17 05:59Z10-17 13:13Z2026-10-17 05:59:00 UTC · 15 kt2026-10-17 12:32:00 UTC · 10 kt2026-10-17 12:59:00 UTC · 13 kt2026-10-17 13:13:00 UTC · 18 kt
    Observed sustained wind · 4 retained observations; 1 discontinuities. Lines join reported values only; missing intervals are not interpolated.
    Temperature, dew point and pressure trends
    Observed temperature at KNGU (°C)Dots are retained observations. Lines break for missing fields, long intervals or changed station location or units. 1 recorded discontinuities. Dashed lines, when present, are the separately issued NWS forecast.21.614°C10-17 05:59Z10-17 13:13Z2026-10-17 05:59:00 UTC · 20.6 °C2026-10-17 12:32:00 UTC · 15 °C2026-10-17 12:59:00 UTC · 15 °C2026-10-17 13:13:00 UTC · 15.6 °C
    Observed temperature · 4 retained observations; 1 discontinuities. Lines join reported values only; missing intervals are not interpolated.
    Observed dew point at KNGU (°C)Dots are retained observations. Lines break for missing fields, long intervals or changed station location or units. 1 recorded discontinuities. Dashed lines, when present, are the separately issued NWS forecast.14.912.3°C10-17 05:59Z10-17 13:13Z2026-10-17 05:59:00 UTC · 13.9 °C2026-10-17 12:32:00 UTC · 13.3 °C2026-10-17 12:59:00 UTC · 13.3 °C2026-10-17 13:13:00 UTC · 13.9 °C
    Observed dew point · 4 retained observations; 1 discontinuities. Lines join reported values only; missing intervals are not interpolated.
    Observed sea-level pressure at KNGU (mb)Dots are retained observations. Lines break for missing fields, long intervals or changed station location or units. 3 recorded discontinuities. Dashed lines, when present, are the separately issued NWS forecast.1016.81011mb10-17 05:59Z10-17 12:59Z2026-10-17 05:59:00 UTC · 1012 mb2026-10-17 12:59:00 UTC · 1015.8 mb
    Observed sea-level pressure · 2 retained observations; 3 discontinuities. Lines join reported values only; missing intervals are not interpolated.
    Observed reports as a table (4)
    Observed (UTC)Wind / gust (kt)From (° true)Temperature / dew point (°C)Pressure (mb)Visibility (mi)
    2026-10-17 05:59:00 UTC15 / 24 35020.6 / 13.9101210 or more
    2026-10-17 12:32:00 UTC10 / 24 34015 / 13.3Not reported5
    2026-10-17 12:59:00 UTC13 / 27 36015 / 13.31015.83
    2026-10-17 13:13:00 UTC18 / 30 36015.6 / 13.9Not reported2
    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 2026-10-17 05:59:00 UTC, captured 2026-10-17 07:00:07.405Z; source body SHA-256 144290c75a8e56c75efc02af4781ad6023effc93af11beecc88e5a894fd759e2.
    • Observed 2026-10-17 12:32:00 UTC, captured 2026-10-17 12:45:09.417Z; source body SHA-256 4313e89bf893409ef88241d3e7d3541b552354a697b3530bc439efd61acf54ce.
    • Observed 2026-10-17 12:59:00 UTC, captured 2026-10-17 13:15:08.402Z; source body SHA-256 235074cffed89b4cab92d4ab7ccfd328bf69ddc8588653f76dece65dfad02f56.
    • Observed 2026-10-17 13:13:00 UTC, captured 2026-10-17 13:30:06.013Z; source body SHA-256 b5c4ca6c0a5dfb11c059a2d4ccce7923dd869d39f2bc88b7080b8db54b05de6b.

    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 source changes

    Recording coverage and limits
    • warnings: retained from 2026-10-16T13:36:09.527Z through 2026-10-17T13:35:04.516Z
    • outlooks: retained from 2026-10-16T13:36:09.527Z through 2026-10-17T13:35:04.354Z
    • hydro: retained from 2026-10-16T13:36:09.527Z through 2026-10-17T13:35:04.348Z
    • analysis: retained from 2026-10-16T13:36:09.527Z through 2026-10-17T13:30:06.013Z
    • winter: retained from 2026-10-16T13:36:09.527Z through 2026-10-17T13:23:03.851Z

    Source-message history is not recorded imagery replay. Recorded radar/satellite imagery is not available in this view.

    Auto-updating checks this site’s cache every minute; each source keeps its own clock.

    Spotlight: Radar

    1 of 1

    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 13:00Z.

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

    Monitoring area, legacy alert summary and selection rules
    Area
    Virginia (NWS states: VA)
    Hazards
    Coastal flood 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 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 6

    1. Coastal Flood Watch66 not yet in effect · until 20 Oct 13:00Z
    Every alert in this area, most urgent first
    1. Coastal Flood WatchInland WorcesterFrom · until · NWS Wakefield VA · drawn over this area
    2. Coastal Flood WatchMaryland Beaches; Accomack; NorthamptonFrom · until · NWS Wakefield VA
    3. Coastal Flood WatchEastern CurrituckFrom · until · NWS Wakefield VA · drawn over this area
    4. Coastal Flood WatchSurry; James City; Newport News; Isle of WightFrom · until · NWS Wakefield VA
    5. Coastal Flood WatchChesapeake; Suffolk; Norfolk; PortsmouthFrom · until · NWS Wakefield VA
    6. Coastal Flood WatchVirginia BeachFrom · until · NWS Wakefield VA

    Most urgent first, by the Briefing’s ranking. Checked .

    Sources

    Choose another storm or areaChange monitoring areaSource status

    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.