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NAM Surface CAPE Map Unavailable

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About This Map

CAPE, or Convective Available Potential Energy, is a measurement of the instability of an air mass at a given moment. Large CAPE values are a good indication that severe thunderstorms containing large hail, strong winds, and tornadoes are likely. On our weather maps, CAPE is given in joules per kilogram.

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Map Status

Model Run Hour
GFS 00Z 360
GFS-HR 00Z 360
NAM 00Z 084
RAP 04Z 021
ECMWF 12Z 240
GEFS 00Z 198
CMC 00Z 063
ECMEPS 12Z 240

Latest News

2019-01-21: Added anomaly maps.