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:

  --   Next Watch

Type:TOR
Watch #:
SAW Issuance202301021916-KWNS-WWUS30-SAW1
SEL Issuance202301021920-KWNS-WWUS20-SEL1
Watch Probs202301021915-KWNS-WWUS40-WWP1
Issue:2023-01-02 19:20 UTC
Expired/Cancelled:2023-01-03 03:00 UTC
WOU Outline Shapefiles20Z, 21Z, 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>-96.15,31.71 -93.26,36.08 -90.93,36.08 -93.94,31.71 -96.15,31.71</coordinates></LinearRing></outerBoundaryIs></Polygon></MultiGeometry>

Watch Polygon (GeoJSON):

{"type":"MultiPolygon","coordinates":[[[[-96.15,31.71],[-93.26,36.08],[-90.93,36.08],[-93.94,31.71],[-96.15,31.71]]]]}