NAM Ensemble

Precipitation: 2/19/13 03 UTC

500 mb vorticity 2/19/13 06 UTC

Temperatures below freezing 2/18/13 18 UTC

Temperatures below freezing 2/20/13 09 UTC

850 Temperatures 2/20/13 06 UTC

1000-500 mb thickness 02/19/13 15 UTC