View All Articles

Criteria for a Severe Thunderstorm Warning

Posted on October 14, 2010 by iAlert Weather
Criteria for a Severe Thunderstorm Warning ImageThe National Weather Service (NWS) is the official U.S. government agency charged with issuing weather watches, warnings, and advisories and is the source used by iAlert.com. Below is the criteria for a severe thunderstorm used by NWS forecasters when issuing a severe thunderstorm warning…  
  • 1 inch hail (the size of quarters) and/or
  • 58 mph wind
When a severe thunderstorm warning is issued it means there is an immediate danger for the warned area and those in the storm path should take cover immediately. Severe thunderstorms can occur in all 50 states, but are most common in the lower 48 states. Looking for the criteria for a Tornado Warning or a weather glossary?
This entry was posted in Weather Glossary and tagged , , . Bookmark the permalink.

Leave a Reply

Read More

Critical fire weather outlook from the SPC for July 1 and July 2, 2026, showing Elevated and Critical risk zones across the Southwest.

Critical Fire Weather Outlook: SPC Flags Dangerous Conditions June 30 Through July 2, 2026

Critical fire weather conditions are in place across portions of the United States from June 30 through July 2, 2026, according to a series of Day 1 and Day 2 Fire Weather Outlooks issued by the…

Read More

Midwest severe thunderstorms Enhanced Risk categorical outlook for July 1, 2026, from the NOAA Storm Prediction Center

Midwest Severe Thunderstorms: Enhanced Risk Brings 80 MPH Gusts, Large Hail, and Tornadoes on July 1

Midwest severe thunderstorms are forecast to bring dangerous weather across the Upper Midwest and Great Lakes region on Wednesday, July 1, 2026. The NOAA Storm Prediction Center has issued an Enhanced Risk, the third of five…

Read More

Severe Thunderstorms Wisconsin Michigan Upper Peninsula and Northeast under SPC Slight Risk outlook map for June 30, 2026

Severe Thunderstorms Wisconsin Michigan and Northeast: SPC Slight Risk for June 30, 2026

Severe thunderstorms Wisconsin Michigan and the Upper Peninsula face a Slight Risk on June 30, 2026, the second of five severe categories (level 2 of 5) in the NOAA Storm Prediction Center's Day 1 Convective Outlook.…

Read More

Leave a Reply