Heavy to excessive rainfall may bring flooding to parts of Arizona, New Mexico, Florida, North Carolina, and Virginia Wednesday. Recently burned areas will be particularly vulnerable to flash flooding. Gusty winds and low humidity will bring critical fire weather to parts of the Northwest U.S. and central Alaska on Wednesday where Red Flag Warnings are in effect. Read More >
Snow Amount Potential
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Expected Snowfall - Official NWS Forecast
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High End Amount 1 in 10 Chance (10%) of Higher Snowfall What's this? |
Low End Amount 9 in 10 Chance (90%) of Higher Snowfall What's this? |
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Percent Chance That Snow Amounts Will Be Greater Than...
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Snowfall Totals by Location
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Ice Accumulation Potential |
Expected Ice Accumulation - Official NWS Forecast |
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Snow Amount Potential
Experimental - Leave feedback
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Expected Snowfall - Official NWS Forecast
What's this? |
High End Amount 1 in 10 Chance (10%) of Higher Snowfall What's this? |
Low End Amount 9 in 10 Chance (90%) of Higher Snowfall What's this? |
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Percent Chance That Snow Amounts Will Be Greater Than...
Experimental - Leave feedback
What's this?
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Other Snow/Ice Information | ||
Observed Snow/Ice Amounts | Winter Storm Severity Index | |
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Useful Winter Weather Information | ||
Historic Mid-Atlantic Winter Storms |
Winter/Snowfall Statistics |
El Niño and DC/Baltimore Winters |
Watches, Warnings, & Advisories |
How to Measure Snow |
La Niña and DC/Baltimore Winters |
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At Home | On the Road | Outside in the Cold |
Onset/End of Wintry Precipitation | ||
Onset of Wintry Precipitation (For areas under Warning or Advisory) |
End of Wintry Precipitation (For areas under Warning or Advisory) |
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Precipitation OnsetMost likely time of winter precipitation onset (snow, sleet, freezing rain). Rain is not included here. This information is provided when we issue a Warning or Advisory for expected snow or ice accumulation; typically six to 24 hours in advance. Times are only given for places that are under a Warning or Advisory. They will be blank in areas outside Warnings or Advisories. Precipitation End TimeMost likely time that the accumulating winter precipitation ends (snow, sleet, freezing rain). Rain is not included here. This information is provided when we issue a Warning or Advisory for expected snow or ice accumulation; typically six to 24 hours in advance of the onset. Times are only given for places that are under a Warning or Advisory. They will be blank in areas outside Warnings or Advisories. |
Maryland Ice Accumulation Forecast | ||
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