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 #:	1997199819992000200120022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024
SAW Issuance	201801212103-KWNS-WWUS30-SAW1
SEL Issuance	201801212105-KWNS-WWUS20-SEL1
Watch Probs	201801212059-KWNS-WWUS40-WWP1
Issue:	2018-01-21 21:05 UTC
Expired/Cancelled:	2018-01-22 05:00 UTC
WOU Outline Shapefiles	22Z, 23Z, 00Z, 01Z, 02Z, 03Z, 04Z, 05Z,

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>-92.48,36.43 -94.62,31.68 -96.83,31.68 -94.81,36.43 -92.48,36.43</coordinates></LinearRing></outerBoundaryIs></Polygon></MultiGeometry>

Watch Polygon (GeoJSON):

{"type":"MultiPolygon","coordinates":[[[[-92.48,36.43],[-94.62,31.68],[-96.83,31.68],[-94.81,36.43],[-92.48,36.43]]]]}