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.

Related Links: View This Watch on SPC Website   Download Watches   List PDS Watches

All active watches at issuance:

Previous Watch   --   Next Watch

Type:TOR
Watch #:
SAW Issuance201709100340-KWNS-WWUS30-SAW2
SEL Issuance201709100340-KWNS-WWUS20-SEL2
Watch Probs201709100337-KWNS-WWUS40-WWP2
Issue:2017-09-10 03:40 UTC
Expired/Cancelled:2017-09-10 16:03 UTC
WOU Outline Shapefiles04Z, 05Z, 06Z, 07Z, 08Z, 09Z, 10Z, 11Z, 12Z, 13Z, 14Z, 15Z, 16Z,

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>-79.8,28.53 -79.73,24.53 -81.33,24.53 -81.44,28.53 -79.8,28.53</coordinates></LinearRing></outerBoundaryIs></Polygon></MultiGeometry>

Watch Polygon (GeoJSON):

{"type":"MultiPolygon","coordinates":[[[[-79.8,28.53],[-79.73,24.53],[-81.33,24.53],[-81.44,28.53],[-79.8,28.53]]]]}