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NAM 1000mb Absolute Vorticity Map Unavailable
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About This Map

Absolute vorticity is the strength of rotation present at a given moment. Positive values represent counterclockwise rotation, and negative values represent clockwise rotation. Highly positive values often represent storm systems. On our weather maps, absolute vorticity is given in units of .00001 hertz.

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Map Status


Model Run Hour
GFS 12Z 384
GFS-HR 12Z 384
NAM 18Z 051
RAP 19Z 021
ECMWF 12Z 240
GEFS 12Z 384
CMC 12Z 240
ECMEPS 12Z 240

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2019-01-21: Added anomaly maps.