Winter Storm Warning Issued for Casper and Southeast Johnson County Through Thursday Morning

Alert Details

The National Weather Service in Riverton, WY, has issued a Winter Storm Warning for Southeast Johnson County and the lower elevations of Natrona County. This alert indicates that severe winter weather conditions are likely and may pose a threat to life and property.

Affected Areas

The warning covers the following geographic regions in Wyoming:

• Natrona County Lower Elevations (including Casper)
• Southeast Johnson County

Expected Conditions

Residents should prepare for significant snowfall and windy conditions:

• Snow Accumulations: Between 3 and 6 inches are expected around Casper. Higher amounts of 4 to 8 inches are forecast across northern Natrona into southern Johnson Counties.
• Wind Speeds: Gusts are expected to reach as high as 40 mph.
• Snowfall Rates: The heaviest snowfall is forecast for late Wednesday evening into early Thursday morning, with rates potentially reaching 1 inch per hour.
• Visibility: Blowing snow and reduced visibilities are likely due to the combination of heavy snow and high wind gusts.

Timeline

The Winter Storm Warning is effective from 5:00 PM MST Wednesday, February 18, through 11:00 AM MST Thursday, February 19. Hazardous conditions are expected to specifically impact the Wednesday evening and Thursday morning commutes.

What You Should Do

Travel could be difficult during this period. If you must travel, the National Weather Service recommends keeping an extra flashlight, food, and water in your vehicle in case of an emergency. For the latest winter road conditions from the Wyoming Department of Transportation, residents should visit https://wyoroad.info.