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 Issuance201803102141-KWNS-WWUS30-SAW7
SEL Issuance201803102145-KWNS-WWUS20-SEL7
Watch Probs201803102140-KWNS-WWUS40-WWP7
Issue:2018-03-10 21:45 UTC
Expired/Cancelled:2018-03-11 04:04 UTC
WOU Outline Shapefiles22Z, 23Z, 00Z, 01Z, 02Z, 03Z, 04Z,

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>-95.02,36.49 -91.31,34.93 -91.31,33.06 -95.02,34.61 -95.02,36.49</coordinates></LinearRing></outerBoundaryIs></Polygon></MultiGeometry>

Watch Polygon (GeoJSON):

{"type":"MultiPolygon","coordinates":[[[[-95.02,36.49],[-91.31,34.93],[-91.31,33.06],[-95.02,34.61],[-95.02,36.49]]]]}