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Here is a collection of facts related to the large storm system that affected the weather for much of the United States on October 26-27, 2010. The facts will be arranged beneath a related thumbnail image.


Pressure Records

  • This storm did not set any record for the lowest non-tropical pressure measured on the mainland United States.
  • The lowest sea level pressure observed was 955.2 millibars at Bigfork, MN at 5:13 PM CDT on October 26, 2010.
  • This was the lowest pressure on record in the central part of the United States, and Minnesota and Wisconsin set state low pressure records.

Read more about the pressure records


Wind Gusts

Image from the NWS Green Bay, WI

  • The highest non-thunderstorm wind gust across the region as a consequence of this storm was 79 mph at Sherwood, WI.
  • Non-thunderstorm wind gusts over 60 mph were measured in parts of the following states from this storm: Montana, North Dakota, South Dakota, Nebraska, Minnesota, Iowa, Wisconsin, Michigan, Illinois, and Indiana.



Severe Weather

  • There were 557 preliminary severe weather reports from thunderstorms that developed along the cold front associated with this storm October 25-27, 2010.
  • These reports include hail over 1" in diameter, wind gusts of at least 58 mph, wind damage, or tornadoes.
  • A squall line that developed in eastern Kansas and eastern Oklahoma late on October 25th raced east into the Ohio River Valley on the 26th, producing widespread wind damage.
  • More thunderstorms developed later on October 26th in parts of the South and then they pushed into the Carolinas and Virginia on October 27.




Image from the National Mosaic and Multisensor QPE

  • Several areas of heavy precipitation resulted from this strong storm.
  • Some areas of northeast Minnesota received over 5 inches of precipitation, and the area from eastern North Dakota into northern Wisconsin received widespread totals of at least 1 inch.
  • Some of the precipitation fell as snow from North Dakota into northern Minnesota. As much as 9 inches of snow fell. Blizzard Warnings were in effect for parts of North Dakota.
  • Another area of rain in excess of an inch stretched from southern Arkansas into Eastern Tennessee where training thunderstorms developed.