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:SVR
Watch #:
SAW Issuance201711032047-KWNS-WWUS30-SAW0
SEL Issuance201711032050-KWNS-WWUS20-SEL0
Watch Probs201711032046-KWNS-WWUS40-WWP0
Issue:2017-11-03 20:50 UTC
Expired/Cancelled:2017-11-04 03:03 UTC
WOU Outline Shapefiles21Z, 22Z, 23Z, 00Z, 01Z, 02Z, 03Z,

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>-92.36,34.52 -90.26,34.43 -90.26,32.99 -92.36,33.09 -92.36,34.52</coordinates></LinearRing></outerBoundaryIs></Polygon></MultiGeometry>

Watch Polygon (GeoJSON):

{"type":"MultiPolygon","coordinates":[[[[-92.36,34.52],[-90.26,34.43],[-90.26,32.99],[-92.36,33.09],[-92.36,34.52]]]]}