WPC Probabilistic Winter Precipitation Guidance

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24-Hour Probability of Snow Accumulating ≥ 1"
	Day 1				Day 2				Day 3
Valid for the 24-hour period ending:	12 UTC Mon Dec 23	18 UTC Mon Dec 23	00 UTC Tue Dec 24	06 UTC Tue Dec 24	12 UTC Tue Dec 24	18 UTC Tue Dec 24	00 UTC Wed Dec 25	06 UTC Wed Dec 25	12 UTC Wed Dec 25

24-Hour Probability of Snow Accumulating ≥ 2"
	Day 1				Day 2				Day 3
Valid for the 24-hour period ending:	12 UTC Mon Dec 23	18 UTC Mon Dec 23	00 UTC Tue Dec 24	06 UTC Tue Dec 24	12 UTC Tue Dec 24	18 UTC Tue Dec 24	00 UTC Wed Dec 25	06 UTC Wed Dec 25	12 UTC Wed Dec 25

24-Hour Probability of Snow Accumulating ≥ 4"
	Day 1				Day 2				Day 3
Valid for the 24-hour period ending:	12 UTC Mon Dec 23	18 UTC Mon Dec 23	00 UTC Tue Dec 24	06 UTC Tue Dec 24	12 UTC Tue Dec 24	18 UTC Tue Dec 24	00 UTC Wed Dec 25	06 UTC Wed Dec 25	12 UTC Wed Dec 25

24-Hour Probability of Snow Accumulating ≥ 6"
	Day 1				Day 2				Day 3
Valid for the 24-hour period ending:	12 UTC Mon Dec 23	18 UTC Mon Dec 23	00 UTC Tue Dec 24	06 UTC Tue Dec 24	12 UTC Tue Dec 24	18 UTC Tue Dec 24	00 UTC Wed Dec 25	06 UTC Wed Dec 25	12 UTC Wed Dec 25

24-Hour Probability of Snow Accumulating ≥ 8"
	Day 1				Day 2				Day 3
Valid for the 24-hour period ending:	12 UTC Mon Dec 23	18 UTC Mon Dec 23	00 UTC Tue Dec 24	06 UTC Tue Dec 24	12 UTC Tue Dec 24	18 UTC Tue Dec 24	00 UTC Wed Dec 25	06 UTC Wed Dec 25	12 UTC Wed Dec 25

24-Hour Probability of Snow Accumulating ≥ 12"
	Day 1				Day 2				Day 3
Valid for the 24-hour period ending:	12 UTC Mon Dec 23	18 UTC Mon Dec 23	00 UTC Tue Dec 24	06 UTC Tue Dec 24	12 UTC Tue Dec 24	18 UTC Tue Dec 24	00 UTC Wed Dec 25	06 UTC Wed Dec 25	12 UTC Wed Dec 25

24-Hour Probability of Snow Accumulating ≥ 18"
	Day 1				Day 2				Day 3
Valid for the 24-hour period ending:	12 UTC Mon Dec 23	18 UTC Mon Dec 23	00 UTC Tue Dec 24	06 UTC Tue Dec 24	12 UTC Tue Dec 24	18 UTC Tue Dec 24	00 UTC Wed Dec 25	06 UTC Wed Dec 25	12 UTC Wed Dec 25

Viewing Options

Choose an accumulation for the specified time:

Choose a 24-hour period for the specified amount:

12Z Dec 23
18Z Dec 23
00Z Dec 24
06Z Dec 24
12Z Dec 24
18Z Dec 24
00Z Dec 25
06Z Dec 25
12Z Dec 25

Map Overlays

State Boundaries

(Note: The GRIB2 download page contains 4 directories corresponding to the accumulation period of the forecast)


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