Headline:
Winter Storm Warning issued May 18 at 3:14AM MDT until May 18 at 6:00PM MDT by NWS Riverton WY
Event:
Winter Storm Warning
Urgency:
Expected
Effective:
May 18, 2026 - 2:14am
Expires:
May 18, 2026 - 5:00pm
Description:
* WHAT...Heavy snow expected. Total snow accumulations between 3 and
6 inches. Areas of higher amounts up to 8 inches between Hiland
and Casper and the south side of Casper. Winds gusting as high as
40 mph.
* WHERE...Natrona County Lower Elevations.
* WHEN...Until 6 PM MDT this evening.
* IMPACTS...Travel will be difficult, especially along US Highway
20/26 between Hiland and Casper. The hazardous conditions will
impact the Monday morning commute. Heavy snow could break tree
limbs as many trees have leafed out.
Instruction:
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .
For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .
Area Description:
Natrona County Lower Elevations
Forcast Office:
NWS Riverton WY