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
Initial Watch Box and Watch By County Outline
Local Storm Reports:
Watch Polygon (KML):
<MultiGeometry><Polygon><outerBoundaryIs><LinearRing><coordinates>-91.05,37.88 -87.02,38.63 -87.02,37.34 -91.05,36.58 -91.05,37.88</coordinates></LinearRing></outerBoundaryIs></Polygon></MultiGeometry>
Watch Polygon (GeoJSON):
{"type":"MultiPolygon","coordinates":[[[[-91.05,37.88],[-87.02,38.63],[-87.02,37.34],[-91.05,36.58],[-91.05,37.88]]]]}