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:SVR
Watch #:
SAW Issuance201701020737-KWNS-WWUS30-SAW1
SEL Issuance201701020735-KWNS-WWUS20-SEL1
Watch Probs201701020733-KWNS-WWUS40-WWP1-CCA
Issue:2017-01-02 07:35 UTC
Expired/Cancelled:2017-01-02 16:04 UTC
WOU Outline Shapefiles08Z, 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>-98.23240068,33.3852687441 -99.7552053035,30.13371332 -96.5731607496,30.13371332 -94.9365372933,33.3852687441 -98.23240068,33.3852687441</coordinates></LinearRing></outerBoundaryIs></Polygon></MultiGeometry>

Watch Polygon (GeoJSON):

{"type":"MultiPolygon","coordinates":[[[[-98.23240068,33.385268744],[-99.755205304,30.13371332],[-96.57316075,30.13371332],[-94.936537293,33.385268744],[-98.23240068,33.385268744]]]]}