WPC Probabilistic Winter Precipitation Guidance
 
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Precipitation Type Forecast Product Forecast Duration





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24-Hour Probability of Snow Accumulating ≥ 1"
  Day 1   Day 2   Day 3
Valid for the 24-hour
period ending: 		00Z Fri
Jan 02 		06Z Fri
Jan 02 		12Z Fri
Jan 02 		18Z Fri
Jan 02 		00Z Sat
Jan 03 		06Z Sat
Jan 03 		12Z Sat
Jan 03 		18Z Sat
Jan 03 		00Z Sun
Jan 04
24-Hour Probability of Snow Accumulating ≥ 2"
  Day 1   Day 2   Day 3
Valid for the 24-hour
period ending: 		00Z Fri
Jan 02 		06Z Fri
Jan 02 		12Z Fri
Jan 02 		18Z Fri
Jan 02 		00Z Sat
Jan 03 		06Z Sat
Jan 03 		12Z Sat
Jan 03 		18Z Sat
Jan 03 		00Z Sun
Jan 04
24-Hour Probability of Snow Accumulating ≥ 4"
  Day 1   Day 2   Day 3
Valid for the 24-hour
period ending: 		00Z Fri
Jan 02 		06Z Fri
Jan 02 		12Z Fri
Jan 02 		18Z Fri
Jan 02 		00Z Sat
Jan 03 		06Z Sat
Jan 03 		12Z Sat
Jan 03 		18Z Sat
Jan 03 		00Z Sun
Jan 04
24-Hour Probability of Snow Accumulating ≥ 6"
  Day 1   Day 2   Day 3
Valid for the 24-hour
period ending: 		00Z Fri
Jan 02 		06Z Fri
Jan 02 		12Z Fri
Jan 02 		18Z Fri
Jan 02 		00Z Sat
Jan 03 		06Z Sat
Jan 03 		12Z Sat
Jan 03 		18Z Sat
Jan 03 		00Z Sun
Jan 04
24-Hour Probability of Snow Accumulating ≥ 8"
  Day 1   Day 2   Day 3
Valid for the 24-hour
period ending: 		00Z Fri
Jan 02 		06Z Fri
Jan 02 		12Z Fri
Jan 02 		18Z Fri
Jan 02 		00Z Sat
Jan 03 		06Z Sat
Jan 03 		12Z Sat
Jan 03 		18Z Sat
Jan 03 		00Z Sun
Jan 04
24-Hour Probability of Snow Accumulating ≥ 12"
  Day 1   Day 2   Day 3
Valid for the 24-hour
period ending: 		00Z Fri
Jan 02 		06Z Fri
Jan 02 		12Z Fri
Jan 02 		18Z Fri
Jan 02 		00Z Sat
Jan 03 		06Z Sat
Jan 03 		12Z Sat
Jan 03 		18Z Sat
Jan 03 		00Z Sun
Jan 04
24-Hour Probability of Snow Accumulating ≥ 18"
  Day 1   Day 2   Day 3
Valid for the 24-hour
period ending: 		00Z Fri
Jan 02 		06Z Fri
Jan 02 		12Z Fri
Jan 02 		18Z Fri
Jan 02 		00Z Sat
Jan 03 		06Z Sat
Jan 03 		12Z Sat
Jan 03 		18Z Sat
Jan 03 		00Z Sun
Jan 04
Viewing Options
Choose an accumulation for the specified time:







OR
Choose a 24-hour period for the specified amount:
00Z Jan 02
06Z Jan 02
12Z Jan 02
18Z Jan 02
00Z Jan 03
06Z Jan 03
12Z Jan 03
18Z Jan 03
00Z Jan 04
Map Overlays
 
Opacity (%): 0 20 40 60 80 100
 
 
(Note: The GRIB2 download page contains 4 directories corresponding to the accumulation period of the forecast)
 
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