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GFS 2 Meter Heat Index Map Unavailable
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About This Map

Perceived temperature is the temperature at a given moment as perceived by a human being (not the actual air temperature). The perceived temperature map is a combination of two non-overlapping factors: heat index and wind chill. In hot weather, heat index, which is based on temperature and humidity, is used. In cold weather, wind chill, which is based on temperature and wind speed, is used. On our weather maps, perceived temperature, heat index, and wind chill are given in degrees Fahrenheit. Celsius maps for these variables are not available on this site since these variables are based on formulas only used in the United States.

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Map Status


Model Run Hour
GFS 18Z 360
GFS-HR 18Z 384
NAM 18Z 084
RAP 22Z 005
ECMWF 12Z 240
GEFS 18Z 084
CMC 12Z 009
ECMEPS 12Z 240

Latest News

2019-01-21: Added anomaly maps.