This application presents a browsable archive of SPC issued tornado and severe thunderstorm watches. Each sequential watch is assigned a numeric ID, which uniquely identifies a watch for each year. Up until 2006, the polygon was the valid area of the watch. Since then, the valid area is issued by county and marine zone.

All active watches at issuance:

  --   Next Watch

Watch #:
Issue:2018-01-21 21:05 UTC
Expired/Cancelled:2018-01-22 05:03 UTC
WOU Outline Shapefiles22Z, 23Z, 00Z, 01Z, 02Z, 03Z, 04Z,

View This Watch on SPC Website

Archive Status:

  • Watch archive should be complete back to 1997.
  • RADAR composite is mostly complete back to 1997.
  • Local Storm Reports are available after 2002.

Initial Watch Box and Watch By County Outline

Local Storm Reports:

Watch Polygon (KML):

<MultiGeometry><Polygon><outerBoundaryIs><LinearRing><coordinates>-92.480000000000004,36.43 -94.620000000000005,31.68 -96.829999999999998,31.68 -94.810000000000002,36.43 -92.480000000000004,36.43</coordinates></LinearRing></outerBoundaryIs></Polygon></MultiGeometry>

Watch Polygon (GeoJSON):