Wyoming Severe Weather Awareness Week

April 20-24, 2009

Severe Thunderstorm
Photo Courtesy of Sheridan Media - Viewed from Lusk, WY.

Index Watch/Warning Program Thunderstorm Climatology Severe Weather Safety Lightning Safety Weather Sources

The National Weather Service (NWS) offices in Wyoming are sponsoring the severe weather awareness week.

The NWS and Wyoming Department of Homeland Security officials will conduct a statewide tornado drill around 10:30 A.M. MDT Wednesday, April 22nd. The exercise is designed to train emergency services organizations and educate people how to respond to a tornado warning. Communities may sound local warning sirens and many schools will conduct safety drills for their students. The tornado drill will also include a test of the Emergency Alert System and the test warning will interrupt local radio and television broadcasts.

You do not need to take any action during the drill. However, officials encourage you to become familiar with safety rules and make plans to protect yourself and your family when storms develop. If an actual tornado warning was issued, it means a tornado has been sighted or indicated on radar and people should take shelter immediately. Tornado warnings are disseminated through NOAA weather radio, local television and radio stations, cable television systems, and outdoor warning sirens.

This information is provided in order to inform you on the different types of severe weather we have in Wyoming and also to provide safety information related to each type. Click on one of the tabs above to learn more.

Monday, April 20: NWS Watch and Warning Program

Tuesday, April 21: Severe Thunderstorm Climatology

Wednesday, April 22: Severe Weather Safety

Thursday, April 23: Lightning Safety

Friday, April 24: Weather Information Sources

Wyoming is served by five National Weather Service offices. We issue watches and warnings for the protection of life and property. For additional information, contact your local NWS office:

Cheyenne, WY Riverton, WY Billings, MT Rapid City, SD Salt Lake City, UT
307-772-2468 307-857-3898 406-652-0851 605-341-9271 801-524-5133

Flash Flooding
Hawk Springs, WY, May 23, 2008 Cheyenne, WY.


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