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NAM 2 Meter Perceived Temperature 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 12Z 384
GFS-HR 12Z 384
NAM 12Z 084
RAP 17Z 021
ECMWF 12Z 048
GEFS 12Z 384
CMC 12Z 015
ECMEPS 00Z 240

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2018-12-04: Changed snowfall algorithm to be more accurate.