Heavy Rain and Flash Flooding Concerns in California; Heavy Snow in the Sierra

Forecast Highs

An atmospheric river will bring heavy rainfall to lower elevations of California this week, and heavy snow to the Sierra Nevada mountains. Flash flooding, some of which may be locally considerable, will be a concern on the western foothills of the Sierra Nevada mountains through Tuesday. Landslides, rockfalls and mudslides are possible in the Southern California mountains. Read More >

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Contact NWS La Crosse via phone,
email at nws.lacrosse@noaa.gov,
or NWSChat (online chat room)

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Now	6 hrs	12 hrs	18 hrs	24 hrs	30 hrs	36 hrs
Hover over thumbnails above to view a larger version below. Wind graphics are updated by approximately 4:30 AM, 10:30 AM, 4:30 PM, and 10:30 PM.

Heat Index / Wet Bulb Globe Temperature Forecasts

Today's Forecast Heat Index					Forecast MAXIMUM Heat Index


7 AM (CDT)	10 AM (CDT)	1 PM (CDT)	4 PM (CDT)	7 PM (CDT)	Tomorrow	Day 3	Day 4

Today's Forecast Wet Bulb Globe Temp					Forecast MAXIMUM Wet Bulb Globe Temp


7 AM (CDT)	10 AM (CDT)	1 PM (CDT)	4 PM (CDT)	7 PM (CDT)	Tomorrow	Day 3	Day 4

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Wind Chill Forecasts (Available October - April)

3-Hour Forecast Wind Chills

Now		6 hrs		12 hrs		18 hrs		24 hrs		30 hrs		36 hrs
Hover over thumbnails above to view a larger version below. Wind chill graphics are updated by approximately 4:30 AM, 10:30 AM, 4:30 PM, and 10:30 PM.

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Disclaimer:

Weather and road conditions change rapidly; information reported here should not be used as the only factor in determining whether to travel in a particular area.
Reports are based on the information available at the time of preparation and cannot be guaranteed as to accuracy or timeliness. Actual conditions may vary from those reported.
Motorists are cautioned to be alert to changing circumstances and adjust their driving accordingly.

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Snow & Ice Forecasts

Snow/Ice Amount Potential Over Next 72 Hours*			City Snowfall Probabilities
*Snow/ice amount graphics below may occasionally depict total accumulations from multiple events over next 72 hours
Expected Snowfall Official NWS Forecast	Low End Snowfall Potential 90% Chance Snowfall Will Be Greater Than This	High End Snowfall Potential 10% Chance Snowfall Will Be Greater Than This	Forecast Snowfall Probability Ranges By City

Expected Ice Accumulation Official NWS Forecast	Low End Ice Accum Potential 90% Chance Icing Will Be Greater Than This	High End Ice Accum Potential 10% Chance Icing Will Be Greater Than This	Probability of Snowfall Exceeding Certain Amounts

Chance That Snow/Ice Amounts Over Next 72 Hours Will Be Greater Than Or Equal To... (More Details)
SNOW	0.1"	1"	2"	4"	6"	8"	12"	18"
ICE	0.01"	0.1"	0.25"	0.5"	0.75"	1"	1.25"	1.5"

6-Hour Forecast Snow/Ice Amounts and Snow Type (Dry vs. Wet)

	Now	24 hrs	48 hrs	72 hrs
6-hr snow
	Now	24 hrs	48 hrs	72 hrs
6-hr snow type
	Now	24 hrs	48 hrs	72 hrs
6-hr ice
Hover over thumbnails above to view a larger version below.