WHEN EMERGENCY SITUATIONS OCCUR: STAY INFORMED!

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Tornado

Click here to see "How a Tornado Works"

tornado scale

FUJITA SCALEDERIVED EF SCALEOPERATIONAL EF SCALE
F NumberFastest 1/4-mile (mph)3 Second Gust (mph)EF Number3 Second Gust (mph)EF Number3 Second Gust (mph)
0 40-7245-78065-85065-85
1 73-11279-117186-109186-110
2113-157118-1612110-1372111-135
3158-207162-2093138-1673136-165
4208-260210-2614168-1994166-200
5261-318262-3175200-2345Over 200

***IMPORTANT NOTE ABOUT ENHANCED F-SCALE WINDS:
The Enhanced Fujita Scale, or EF Scale, is the scale for rating the strength of tornadoes in the United States estimated via the damage they cause.

Implemented in place of the Fujita scale, it began operational use on February 1, 2007. The scale has the same basic design as the original Fujita scale, six categories from zero to five representing increasing degrees of damage.

It was revised to reflect better examinations of tornado damage surveys, so as to align wind speeds more closely with associated storm damage. Better standardizing and elucidating what was previously subjective and ambiguous, it also adds more types of structures as well as vegetation, expands degrees of damage, and better accounts for variables such as differences in construction quality.

TORNADO WATCH
A tornado watch is issued when conditions are favorable for a tornado to occur.
Remain alert for approaching storms.This is time to remind family members where the safest places within your home are located, and listen to the radio or television for further developments.Be prepared to seek shelter.

TORNADO WARNING
A tornado warning is issued when a tornado has been sighted in the area.
Immediately seek safe shelter.

PRIOR TO THE THREAT
Before you are faced with the threat of a tornado, plan now and be prepared.

IF YOU SEE A TORNADO
A tornado is one of nature's most awe inspiring events. Be familiar with this information if in the event you spot a tornado.

DURING A TORNADO
If you are in an area when a tornado strikes the following information is provided to help in protecting your family.

If in a Building:
  • Go to the basement, storm cellar, or the lowest level of the building.
  • If no basement, go to an inner hallway or a smaller inner room without windows.
  • Get away from the windows.
  • Get under a piece of sturdy furniture.
  • Use arms to protect head and neck.
  • If in a mobile home, get out and find shelter elsewhere.
If Outside:
  • If possible, get inside a building.
  • If shelter is not available, lie in a ditch or crouch near a strong building.
  • Be aware of the potential for flooding.
  • Use arms to protect head and neck.
If in a Car:
  • Never try to out drive a tornado. Get out of the car and take shelter in a nearby building.
  • If shelter is not available, lie in a ditch or crouch near a strong building.
  • Be aware of the potential for flooding.
  • Use arms to protect head and neck.


Last Updated: June 8, 2016 11:48 AM

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