National Weather Service United States Department of Commerce

Stubborn East Coast Low; Locally Heavy Rain in the Four Corners Region

A stubborn area of low pressure will keep conditions inclement for parts of the Mid-Atlantic and Northeast with rain showers and gusty winds through Wednesday. Meanwhile, locally heavy to excessive rain is possible across the Four Corners region over the next couple of days. Read More >

Banner for Severe Weather Awareness Week in Wyoming

Are You Ready for Severe Weather?

Severe Weather Awareness Banner

Severe Storms Lightning Safety Tornado Safety & Weather Radio Flooding Safety Fire Weather


Central and western Wyoming's 2021 Severe Weather Awareness Week will occur from Monday, May 10th until
Friday, May 14th. It is the National Weather Service’s mission to protect life and property and during this week
NWS Riverton will be stressing the importance of severe weather safety and the importance of preparing and
planning for various natural disasters that impact Wyoming.  Having a practiced plan ahead of time can make
the difference between life and death.

Each day this week will focus on a different type of severe weather and include safety information related to
each type. Click on one of the tabs above to learn more.  The lineup for 2021's Severe Weather Awareness week is:

Monday, May 10: Severe Storms (Large Hail and damaging Winds)

Tuesday, May 11: Lightning Safety

Wednesday, May 12:  Tornado Safety and Special Tornado Drill at 9 AM MDT.

Thursday, May 13: Flood Safety

Friday, May 14: Fire Weather

NWS Riverton will conduct a special test of the NOAA Weather Radio weekly broadcast, which will serve as the tornado drill.  This will take place around 9:00 A.M. MDT on Wednesday, May 12th. The drill is designed to allow emergency services organizations, schools and the public to test their severe weather plan and better educate the public involving how to respond
to a tornado warning. Communities may sound local warning sirens and many schools will conduct safety drills for their students. 

You should use this special NOAA Weather Radio test as your tornado drill and it is encouraged that you treat this like a real event so that you can test your safety plan.  It is also encouraged that you further 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.

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

Link to Cheyenne's Facebook pageLink to Cheyenne's Twitter page

Link to Riverton's Facebook pageLink to Riverton's Twitter page

Link to Billings's Facebook pageLink to Billings's Twitter page

Link to Rapid City's Facebook pageLink to Rapid City's Twitter page

Link to Salt Lake City's Facebook pageLink to Salt Lake City's Twitter page

A funnel west of Cheyenne on June 25, 2014.
Table Rock-Sweetwater County, WY - May 26, 2017.

Microburst Damage in Worland, WY - July 3rd, 2011. Photos Courtesy of James Yule.


Staying Aware of the Weather

Ready, Set, Go: This is the mindset we want people to be in when it comes to being prepared for hazardous weather.

Before Severe Weather Season: Develop an emergency plan and practice it regularly.

Here are a few questions to ask when developing your plan:

  • What is your risk for a natural disaster?  Do you live in a flood prone area? Knowing your risk can help you develop a plan tailored to your family.
  • Where do you go in case of a natural disaster?  Is it a basement such as during a tornado, or to higher ground during a flash flood?
  • Do you have a designated meeting place for your family if you get separated? During a natural disaster, phone service might be disrupted, and getting in contact with loved ones might be difficult.
  • What would you do if basic services such as water, gas, electricity, or telephones were cut off?  Having an emergency supply kit in your home and car is essential.  It is recommended that you keep enough supplies in your home to meet your needs for at least 3 days.  After a natural disaster, it could take a while for emergency responders to reach your location.
  • How will you be notified of a natural disaster? What about at night?

Ready: At this stage, the National Weather Service sees something on the horizon that may end up being a widespread severe
weather event in the future. The Hazardous Weather Outlooks and Situation Reports issued by the local NWS offices will give
you this information. Also, the Storm Prediction Center issues thunderstorm outlooks that give an idea of where severe thunderstorms
may develop in the next 8 days. At this stage, you should make sure your emergency plan and supply kit are up-to-date.

Set: In this stage, we are confident that a hazardous weather event will occur, but are not sure of the exact timing, location, or impact
of the event. For severe thunderstorms and tornadoes, a Watch is issued to give the public a heads up that they need to be prepared for the possibility of severe weather within the next 8 hours. At this stage you should keep abreast on the latest weather conditions, and be ready to implement your emergency plan at a moments notice.

Go: When we hit this stage, we are confident that a thunderstorm will be soon producing severe weather and at this point a Warning
will be issued. The lead time can be just precious minutes out to an hour. At this stage, you should activate your emergency plan.

FEMA, the Red Cross, local emergency management, and the National Weather Service can help you develop your plan. Here are a few websites with guidance in making your emergency plan: