1967 Southern Minnesota tornado outbreak

1967 Southern Minnesota tornado outbreak

Infobox tornado outbreak|name=1967 Southern Minnesota tornado outbreak
image location= Waseca5.jpg


date=April 30, 1967
duration= 2 hours, 5 minutes
fujitascale=F4
tornadoes=21
total damages (USD)=$9 million dollars
total fatalities=13 (80 injured)
areas affected=South central and southeast Minnesota and northern Iowa
The 1967 Southern Minnesota tornado outbreak was a tornado outbreak that affected portions of south central and southeast Minnesota on April 30, 1967. The outbreak spawned a total of nine tornadoes resulting in thirteen deaths and eighty injuries. Local area residents refer to the day as "Black Sunday".

Meteorological synopsis

By mid-afternoon on April 30, a surface low pressure area was centered in Pierre, South Dakota. Several fronts stretched from the low pressure area with a stationary front located from north of Sioux Falls, South Dakota to near LaCrosse, Wisconsin. A warm front extended from south of Sioux Falls to near Des Moines, Iowa and St. Louis, Missouri. Between the two fronts, air temperatures had warmed into the 60s and low 70s and dew points in the 60s. Winds were quite strong in the area, with speeds from 15 to 25 mph from the east-southeast. By early evening, the warm front had moved to near the Minnesota-Iowa border. By 6:00 pm CDT, tornadoes began to develop along and just north of the warm front as it moved northward through northern Iowa and into southern Minnesota.

The towns of Albert Lea and Waseca were hardest hit.

Confirmed tornadoes

:"Table of confirmed tornadoes - after surveys by local weather service offices"

Tornado table

ee also

*Climate of Minnesota
*List of North American tornadoes and tornado outbreaks

References

*cite web
title = Introduction to Black Sunday
publisher = National Weather Service-Chanhassen, Minnesota
url = http://www.crh.noaa.gov/mpx/?n=blacksundayintro
accessdate = 2007-03-23


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