National Weather Service United States Department of Commerce

Heavy to Excessive Rainfall in the Central Appalachians; Severe Weather in the Mid-South; Hot Weather in Southern California

Heavy to excessive rainfall may lead to flooding today over southwest Pennsylvania into northern West Virginia, and western Maryland. Severe thunderstorms are possible this afternoon and evening in the Mid-South and across Eastern North Carolina. An extended period of hot weather is forecast for parts of coastal southern California including Los Angeles from today through Thursday. Read More >

NWS Greenville-Spartanburg Criteria for Non-Precipitation Watches/Warnings/Advisories
Hazard Type Watch/Warning Name
Criteria
Advisory Name
Criteria
Cold Weather
  • Extreme Cold Warning
  • Cold Weather Advisory
Heat Excessive Heat Watch/Warning
Heat Index 110 or greater
Heat Advisory
Heat Index 105 or greater but less than 110
Wind (Non-Thunderstorm) High Wind Watch/Warning
Sustained winds higher than 40 mph and/or frequent gusts greater than 57 mph

Wind Advisory
Sustained Winds of 31-40 mph, and/or frequent gusts of 46-57 mph

Frost Freeze Freeze Watch/Warning
Low temperature of 32 degrees or less during the
Frost Advisory
Scattered to widespread frost is forecast during the Growing Season*
Fog N/A Dense Fog Advisory
Fog causing widespread visibility of 1/4 mile or less

 

Criteria for winter precipitation watches/warnings/advisories can be found here.