Surface	850 mb	700 mb	500 mb	300 mb
Analysis	Analysis	Analysis	Analysis	Analysis
06 hr fcst	06 hr fcst	06 hr fcst	06 hr fcst	06 hr fcst
12 hr fcst	12 hr fcst	12 hr fcst	12 hr fcst	12 hr fcst
18 hr fcst	18 hr fcst	18 hr fcst	18 hr fcst	18 hr fcst
24 hr fcst	24 hr fcst	24 hr fcst	24 hr fcst	24 hr fcst
30 hr fcst	30 hr fcst	30 hr fcst	30 hr fcst	30 hr fcst
36 hr fcst	36 hr fcst	36 hr fcst	36 hr fcst	36 hr fcst
42 hr fcst	42 hr fcst	42 hr fcst	42 hr fcst	42 hr fcst
48 hr fcst	48 hr fcst	48 hr fcst	48 hr fcst	48 hr fcst
54 hr fcst	54 hr fcst	54 hr fcst	54 hr fcst	54 hr fcst
60 hr fcst	60 hr fcst	60 hr fcst	60 hr fcst	60 hr fcst
66 hr fcst	66 hr fcst	66 hr fcst	66 hr fcst	66 hr fcst
72 hr fcst	72 hr fcst	72 hr fcst	72 hr fcst	72 hr fcst
78 hr fcst	78 hr fcst	78 hr fcst	78 hr fcst	78 hr fcst
84 hr fcst	84 hr fcst	84 hr fcst	84 hr fcst	84 hr fcst
90 hr fcst	90 hr fcst	90 hr fcst	90 hr fcst	90 hr fcst
96 hr fcst	96 hr fcst	96 hr fcst	96 hr fcst	96 hr fcst
Surface Loop	850 mb Loop	700 mb Loop	500 mb Loop	300 mb Loop

UKMET Forecasts and Analysis ECMWF Forecasts and Analysis CRAS (generated by CIMSS)

GFS Forecasts and Analysis WWFM Forecasts

AMPS Data (generated by NCAR) Polar MM5 WRF Model

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This material is based upon work supported by the National Science Foundation under Grants Nos. OPP-0537827, OPP-0338147, and OPP-0230028. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the view of the National Science Foundation.