The Enhanced Fujita Scale (EF Scale) - National Weather Service
The Enhanced Fujita Scale or EF Scale, which became operational on February 1, 2007, is used to assign a tornado a 'rating' based on estimated wind speeds and related damage.
The Fujita Scale - National Weather Service
Moderate tornado 73-112 mph The lower limit is the beginning of hurricane wind speed; peels surface off roofs; mobile homes pushed off foundations or overturned; moving autos pushed off the roads; attached garages may be destroyed.
Severe Weather Awareness - Tornado Classification and Safety
Even though 80% of Wisconsin's tornadoes have been rated weak in intensity, Wisconsin has experienced 3 tornadoes with winds speeds in excess of 260 mph since 1950. One of these violent tornadoes occurred as recently as 1996, peaking in strength east of the village of Oakfield in Fond du Lac county.
Straight Line Winds vs. Tornado: What's the Difference?
Given recent severe weather with both damaging straight-line winds and a few weak tornadoes across the local area, we decided to share a little "science" to explain the difference and common misconceptions!
June 15, 2024 Tornadoes - National Weather Service
Jun 15, 2024 · All damage was pointing toward the east-northeast, with a slightly divergent damage pattern, and a wider damage swath than a tornado. This damage pattern along with radar velocity data suggest that the damage was likely caused by …
Enhanced Fujita Scale - National Weather Service
An Enhanced Fujita (EF) Scale, developed by a forum of nationally renowned meteorologists and wind engineers, makes improvements to the original F scale. This EF Scale has replaced the original F scale, which has been used to assign tornado ratings since 1971.
Tornado Definition - National Weather Service
Winds of a tornado may reach 300 miles per hour. Damage paths can be in excess of one mile wide and 50 miles long. Strong downburst (straight-line) winds may also occur due to the same thunderstom.
Event Summary May 21, 2024 Tornadoes, Winds and Flash Flooding
May 21, 2024 · Multiple rounds of thunderstorms brought torrential rainfall, damaging winds, hail and destructive tornadoes to the state. These thunderstorms were the result of a low pressure system which lifted north into the area on the night of May 20th, 2024, producing slow moving storms that dropped 2 to 4 inches of rainfall.
Tornado Safety - National Weather Service
This website is designed to teach you how to stay safe when a tornado threatens. If you know what to do before, during and after a tornado, you will minimize your risk of injury and increase your chances of survival.
July 15, 2024: Derecho Produces Widespread Wind Damage and …
Jul 15, 2024 · An EF-0 tornado with peak winds around 85 mph started near N Sacramento Boulevard and W Grand Avenue and continued east-southeastward for about 1.4 miles before ending near W Huron Street and N Damen Avenue.