1. Severe Wx Products
  2. Storm Prediction Center Convective Watch Archive

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 Issuance201711051705-KWNS-WWUS30-SAW1
SEL Issuance201711051710-KWNS-WWUS20-SEL1
Watch Probs201711051704-KWNS-WWUS40-WWP1
Issue:2017-11-05 17:10 UTC
Expired/Cancelled:2017-11-06 00:04 UTC
WOU Outline Shapefiles18Z, 19Z, 20Z, 21Z, 22Z, 23Z, 00Z,

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>-87.81,38.99 -84.09,41.65 -81.19,41.65 -85.02,38.99 -87.81,38.99</coordinates></LinearRing></outerBoundaryIs></Polygon></MultiGeometry>

Watch Polygon (GeoJSON):

{"type":"MultiPolygon","coordinates":[[[[-87.81,38.99],[-84.09,41.65],[-81.19,41.65],[-85.02,38.99],[-87.81,38.99]]]]}