National Weather Service United States Department of Commerce

Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

 

Campbell County's Weather Support Page

 

Interactive Hazard Map and Regional Radar

To view hazards legend: Stop the loop, step to the end, and use the alerts drop-down. View full radar page here.

Click here for a static hazards map.

 

 

 

Detailed Forecast

Precipitation Forecast

Liquid Precipitation

Snowfall

Ice

Range of 3-Day Snowfall Possibilities

Probability of Snow Amounts

Winter Storm Severity Index

Day 1

Day 2

Day 3

 

WSSI Web Page

WSSI Fact Sheet

Current Travel Conditions

 

 

Webcams

Gillette I-90/Exit 128 (DOT)
Gillette 16 SW / I-90 MM108 (DOT)
Gillette 21 WNW (BLM)

 

South Gillette (KNBN)
Wright 12 N
Pine Tree Junction

 

WY59 MM 23
Cheyenne River Rest Area
WY59 Jenne Trail