NCEP North American Model: AWIPS 242 (S) Grid over Alaska. Model runs are made at 0, 6, 12, 18Z with analysis and forecasts every 3 hours out to 84 hours (3.5 days). Horizontal = 553 by 425 points, resolution 11.25 km, Polar Stereographic projection. Vertical = 1000 to 100 hPa pressure levels.
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