1997-present Storm information at NOAA's Storm Prediction Center
Tornado Fatalities by Location (Mobil Home, Premanent Home, Vehicle, ...)

Source: Severe Weather Climatology at the Storm Prediction Center.

Storm Prediction Center - 1998 Tornado Summary

Source: U. Nebraska - Lincoln

Some Tornadoe disasters with high death tolls:
(Most were caused by a series of toradoes over 1 or 2 days) Most of these were F4 or F5 (See below).
Year Date Dead States
1896 May 27 255 MO, IL
1899 June 12 117 WI
1908 Apr 24 143 LA-MS
1925 Mar. 18 695 MO, IL, IN
1936 Apr 5 216 MI
1936 Apr 6 203 GA
1947 Apr 9 181 TX-OK-KS
1953 June 8 115 MI
1953 May 11 114 TX
1965?   256 IN, OH, MI
1974 ?   315 11 states in the East, South, and Midwest. Largest number of tornadoes - 148
1985?   75 PA, OH
1994   42 AL, GA, NC
1997 Mar 1 27 AR, MS, TN
1998 Feb 22 42 FL
1998 Apr 8 41 AL, GA
1999 May 3 44 OK, KS
2002 Nov 10 34 OH, TN, AL
2003 May 4 33 KS, MO, IL
2008 Feb. 5-6 55 Tenn., Ark., Ala., Ky., Mo.
2008 May. 11 22 Mo., Okla., Ga.
The Top Ten US Killer Tornadoes at TornadoProject.com

The Frujita Scale of Torando Intensity:
F-Scale NumberFreq-
Intensity PhraseWind SpeedType of Damage Done
F039%Gale tornado40-72 mphLight Damage: Some damage to chimneys; breaks branches off trees; pushes over shallow-rooted trees; damages sign boards.
F136%Moderate tornado73-112 mphModerate Damage: 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.
F219%Significant tornado113-157 mphConsiderable damage: Roofs torn off frame houses; mobile homes demolished; boxcars pushed over; large trees snapped or uprooted; light object missiles generated.
F34.9%Severe tornado158-206 mphSevere Damage: Roof and some walls torn off well constructed houses; trains overturned; most trees in fores uprooted
F41.1%Devastating tornado207-260 mphDevastating damage: Well-constructed houses leveled; structures with weak foundations blown off some distance; cars Thrown and large missiles generated.
F5<0.1%Incredible tornado261-318 mphIncredible damage: Strong frame houses lifted off foundations and carried considerable distances to disintegrate; automobile sized missiles fly Through The air in excess of 100 meters; trees debarked; steel re-inforced concrete structures badly damaged.
F6*Inconceivable tornado319-379 mphThese winds are very unlikely. The small area of damage They might produce would probably not be recognizable along with The mess produced by F4 and F5 wind That would surround The F6 winds. Missiles, such as cars and refrigerators would do serious secondary damage That could not be directly identified as F6 damage. If This level is ever achieved, evidence for it might only be found in some manner of ground swirl pattern, for it may never be identifiable Through engineering studies
Source: The Frujita Scale of Torando Intensity
See examples of damage at Wikipedia

US Tornadoes by state at TornadoProject.com
Tornadoes in the Past

Tornado Safety:
Bad Myths:
- Go under a highway overpass. See UNL advice
- Open windows. [Stay away fom windows]
- The southwest corner of the house is the safest location.
  [Go to the lowest level and center of house during a warning.
  A small interior room like a bathroom is structurally the strongest.]

The Frujita Scale of Torando Intensity
Beaufort, Fujita, and Mach number scales.
U.S. Severe Weather Meteorology And Climatology at University of Nebraska-Lincoln.

last updated 2 Mar 2008