National Weather Service United States Department of Commerce

Winter Storm to Continue Impacting the Mid-Atlantic States Tonight; Potent Winter Storm in the Central U.S.; Heavy Rain and Severe Thunderstorms in the Southern U.S. Wednesday

A winter storm will continue to impact the Mid-Atlantic through tonight with areas of heavy snow, sleet and freezing rain. A winter storm will begin to impact the Central Plains Wednesday, bringing heavy snow from central Kansas through much of Lower Michigan. This system will also produce a wintry mix of sleet and freezing rain from central Oklahoma through Missouri and into Ohio. Read More >

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Day 3 Heat Risk
Day 4 Heat Risk
Day 5 Heat Risk
Day 6 Heat Risk
Day 7 Heat Risk
 
Category Level Meaning
Green 0 No Elevated Risk
Yellow 1 Low Risk for those extremely sensitive to heat, especially those without effective cooling and/or adequate hydration
Orange 2 Moderate Risk for those who are sensitive to heat, especially those without effective cooling and/or adequate hydration
Red 3 High Risk for much of the population, especially those who are heat sensitive and those without effective cooling and/or adequate hydration
Magenta 4 Very High Risk for entire population due to long duration heat, with little to no relief overnight
 
 
Day 3 Heat Index
Day 4 Heat Index
Day 5 Heat Index
Day 6 Heat Index
Day 7 Heat Index
 

 

NWS Heat Index values

 

Classification Heat Index Effect on the body
Caution 80°F - 90°F Fatigue possible with prolonged exposure and/or physical activity
Extreme Caution 90°F - 103°F Heat stroke, heat cramps, or heat exhaustion possible with prolonged exposure and/or physical activity
Danger 103°F - 124°F Heat cramps or heat exhaustion likely, and heat stroke possible with prolonged exposure and/or physical activity
Extreme Danger 125°F or higher Heat stroke highly likely