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Severe Center

Live SPC mesoscale discussions, watches, and storm-based warnings — with a room for real-time discussion.

Active watches

0

SPC outline + NWS counties (deduped)

Active MCDs

2

Mesoscale discussions

TOR / SV warnings

1

Storm-based polygons (polygon-valid now)

NWS watch headlines

0

api.weather.gov active

Live map

Mesoscale discussions (cyan), watches (amber / orange), tornado & severe t-storm warnings (red) · click a polygon for details

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SPC mesoscale discussions

Iowa Environmental Mesonet API v1 · expired discussions are hidden

  • MCD 1370· watch confidence 60%

    SEVERE POTENTIAL...WATCH POSSIBLE

    Jun 29, 12:44 AM → Jun 29, 3:15 AM

    SPC text
  • MCD 1369· watch confidence 20%

    SEVERE POTENTIAL...WATCH UNLIKELY

    Jun 28, 11:43 PM → Jun 29, 1:45 AM

    SPC text

Active watches

SPC outlines (valid=now) plus NWS convective watch polygons · duplicate county lists from multiple offices collapsed

  • No active watch outlines or county polygons at this time.

Tornado & severe thunderstorm warnings (TOR · SV)

IEM /api/1/vtec/sbw_interval.geojson · significance W · polygon-valid now

  • Severe Thunderstorm Warning

    WFO LBF · until Jun 29, 1:45 AM

    IEM VTEC

NWS watch headlines

api.weather.gov alerts/active (filtered)

  • No tornado / severe t-storm watches in the national feed.

Mesoscale discussions and SPC watch outlines: IEM API v1. Alerts: NWS API. Not a substitute for official products.