National Weather Service United States Department of Commerce

 

Did you know HEAT is the #1 weather-related cause of death in the U.S.???

Disclaimer: The Centers for Disease Control and Prevention is the official government source of cause of death information in the U.S., including weather-related fatalities.

 

To help improve awareness of this dangerous hazard, we've compiled heat forecast/safety information, local heat watch/warning/advisory criteria, local heat wave climatology and more below.

 

HEAT SAFETY TIPS/RESOURCES

 

Check out the this presentation and the table below to learn more about the various NWS heat products.

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NOTE: Max Heat Index graphics are only valid April through October.

Click on the images to enlarge them.

Learn more about heat index here.

Day 1

Max Temp

Max Heat Index

Min Rel Hum

Min Temp

Max Temperature - Day 1 Max Apparent Temperature - Day 1 Min Relative Humidity - Day 1 Min Temperature - Night 1

Day 2

Max Temp

Max Heat Index

Min Rel Hum

Min Temp

Max Temperature - Day 2 Max Apparent Temperature - Day 2 Min Relative Humidity - Day 2 Min Temperature - Night 2

Day 3

Max Temp

Max Heat Index

Min Rel Hum

Min Temp

Max Temperature - Day 3 Max Apparent Temperature - Day 3 Min Relative Humidity - Day 3 Min Temperature - Night 3

Day 4

Max Temp

Max Heat Index

Min Rel Hum

Min Temp

Max Temperature - Day 4 Max Apparent Temperature - Day 4 Min Relative Humidity - Day 4 Min Temperature - Night 4

Day 5

Max Temp

Max Heat Index

Min Rel Hum

Min Temp

Max Temperature - Day 5 Max Apparent Temperature - Day 5 Min Relative Humidity - Day 5 Min Temperature - Night 5

Day 6

Max Temp

Max Heat Index

Min Rel Hum

Min Temp

Max Temperature - Day 6 Max Apparent Temperature - Day 6 Min Relative Humidity - Day 6 Min Temperature - Night 6

Day 7

Max Temp

Max Heat Index

Min Rel Hum

Min Temp

Max Temperature - Day 4 Max Apparent Temperature - Day 7 Min Relative Humidity - Day 7 Min Temperature - Night 7

NOTE: The following maps show the Wet Bulb Globe Temperature (WBGT) Risk. Click on the images to enlarge them.

Learn more about WBGT via this info guide and webpage.

Day 1

Day 2

Day 3

Day 4

Max Wet Bulb Globe Temp Risk - Day 1 Max Wet Bulb Globe Temp Risk - Day 2 Max Wet Bulb Globe Temp Risk - Day 3 Max Wet Bulb Globe Temp Risk - Day 4

Day 5

Day 6

Day 7

Max Wet Bulb Globe Temp Risk - Day 5 Max Wet Bulb Globe Temp Risk - Day 6 Max Wet Bulb Globe Temp Risk - Day 7

Heat Advisory

Extreme Heat Watch/Warning

Heat indices of 105-109 degrees for 2+ hours Heat indices of 110+ degrees for 2+ hours