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  Other Surface Snow
surface snow
Winter Weather  
Aviation Winter Weather Dashboard
Heavy Snow/Icing Discussion - NWS/HPC
US Snowfall Forecast - The Weather Channel

Winter Weather Composite  
Day 1 - Winter Weather Composite - NWS/HPC
Day 2 - Winter Weather Composite - NWS/HPC
Day 3 - Winter Weather Composite - NWS/HPC

Snow  
24-Hour Snow Accumulation Graphic - NWS/WPC

Day 1 - > 4" Snow - NWS/HPC
Day 1 - > 8" Snow - NWS/HPC
Day 1 - > 12" Snow - NWS/HPC

Day 2 - > 4" Snow - NWS/HPC
Day 2 - > 8" Snow - NWS/HPC
Day 2 - > 12" Snow - NWS/HPC

Day 3 - > 4" Snow - NWS/HPC
Day 3 - > 8" Snow - NWS/HPC
Day 3 - > 12" Snow - NWS/HPC
Snowfall Rate Table
Visibility Reduction
(due to snow)
SnowFall Rate
(inches per hour)
3 miles +Trace
2 miles1/10
1 1/2 miles1/8
1 mile1/4
3/4 mile1/4 - 1/2
1/2 mile3/4 - 1
1/4 mile1 - 2
1/8 mile2+

Freezing Rain  
Day 1 - Freezing Rain - NWS/HPC
Day 2 - Freezing Rain - NWS/HPC
Day 3 - Freezing Rain - NWS/HPC

Models  
NAM Winter Weather Plots - Unisys
NAM Cumulative Snow Forecast - Unisys

NMS Model Snow Total Forecast - Univ of Washington
00Z:  24 HR  48 HR
12Z:  24 HR  48 HR
Canadian Winter Weather Forecasts - Environment Canada
Short-Range Ensemble Forecast - Winter Weather Impact Graphics - NCEP
RUC 24-hour Snow Accumulations - NOAA

Other  
National Snow Analysis - NWS/NOHRSC
National Snow Summary - NWS/NOHRSC
Experimental Snow Products - NWS/NOHRSC
Previous Day Snowfall - NCDC
Previous 2-Day Snowfall - NCDC
Previous 3-Day Snowfall - NCDC

Previous 7-Day Snowfall - NCDC
State Snowfall Charts - NCDC
Wind Chill Chart
Snow Cover - The Weather Channel
Snow Cover - USAF
Great Lakes Water SFC Temp - GLSEA/NOAA

Approximate snowfall amounts at specified temperature ranges

Melt Water Equivalent Temperature (degrees F) (inches) 34 to 28 27 to 20 19 to 15 14 to 10 9 to 0 -1 to -20 -21 to -40 Trace trace 0.1 0.2 0.3 0.4 0.5 1.0 .01 0.1 0.2 0.2 0.3 0.4 0.5 1.0 .02 0.2 0.3 0.4 0.6 0.8 1.0 2.0 .03 0.3 0.5 0.6 0.9 1.2 1.5 3.0 .04 0.4 0.6 0.8 1.2 1.6 2.0 4.0 .05 0.5 0.8 1.0 1.5 2.0 2.5 5.0 .06 0.6 0.9 1.2 1.8 2.4 3.0 6.0 .07 0.7 1.1 1.4 2.1 2.8 3.5 7.0 .08 0.8 1.2 1.6 2.4 3.2 4.0 8.0 .09 0.9 1.4 1.8 2.7 3.6 4.5 9.0 .10 1.0 1.5 2.0 3.0 4.0 5.0 10.0 .11 1.1 1.7 2.2 3.3 4.4 5.5 11.0 .12 1.2 1.8 2.4 3.6 4.8 6.0 12.0 .13 1.3 2.0 2.6 3.9 5.2 6.5 13.0 .14 1.4 2.1 2.8 4.2 5.6 7.0 14.0 .15 1.5 2.3 3.0 4.5 6.0 7.5 15.0 .16 1.6 2.4 3.2 4.8 6.4 8.0 16.0 .17 1.7 2.6 3.4 5.1 6.8 8.5 17.0 .18 1.8 2.7 3.6 5.4 7.2 9.0 18.0 .19 1.9 2.9 3.8 5.7 7.6 9.5 19.0 .20 2.0 3.0 4.0 6.0 8.0 10.0 20.0 .21 2.1 3.1 4.2 6.3 8.4 10.5 21.0 .22 2.2 3.3 4.4 6.6 8.8 11.0 22.0 .23 2.3 3.4 4.6 6.9 9.2 11.5 23.0 .24 2.4 3.6 4.8 7.2 9.6 12.0 24.0 .25 2.5 3.8 5.0 7.5 10.0 12.5 25.0 .30 3.0 4.5 6.0 9.0 12.0 15.0 30.0 .35 3.5 5.3 7.0 10.5 14.0 17.5 35.0 .40 4.0 6.0 8.0 12.0 16.0 20.0 40.0 .45 4.5 6.8 9.0 13.5 18.0 22.5 45.0 .50 5.0 7.5 10.0 15.0 20.0 25.0 50.0 .60 6.0 9.0 12.0 18.0 24.0 30.0 60.0 .70 7.0 10.5 14.0 21.0 28.0 35.0 70.0 .80 8.0 12.0 16.0 24.0 32.0 40.0 80.0 .90 9.0 13.5 18.0 27.0 36.0 45.0 90.0 1.00 10.0 15.0 20.0 30.0 40.0 50.0 100.0 2.00 20.0 30.0 40.0 60.0 80.0 100.0 200.0 3.00 30.0 45.0 60.0 90.0 120.0 150.0 300.0

This table gives a statistical relationship between amounts of snow that fall and the corresponding water equivalent at specified temperature ranges. The water equivalent and snow fall amounts are listed in inches. Temperature ranges are listed in degrees Farenheit. These values are only approximate. The Actual values for a specific storm can vary significantly from this table.

 

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