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Illinois averages around 50 days of thunderstorm activity a year which put it somewhat above average for number of thunderstorm days for the United States. Illinois is vulnerable to tornadoes with an average of 54 occurring annually, which puts much of the state at around 9.7 tornadoes per 10,000 square miles (30,000 km 2 ) annually.
Average wind speeds "blowing off the prairie" are greater in the Chicago area. Statewide, the wind speeds average 8 to 12 miles per hour (13 to 19 km/h), and is greater in the winter than in summer. Snowfall averages 30 inches (760 mm) in the north and 10 inches (250 mm) in the south, although the actual snowfalls vary greatly by year.
The National Weather Service office of Chicago has one of the longest periods of official weather records, dating back to 1870, though all the 1870 and 1871 weather records taken at 181 West Washington Street were lost in the Great Chicago Fire. Of the two major airports located in Chicago, Midway Airport began observations in 1928, and O'Hare ...
On 5 January, a woman was found deceased in Kansas City after being reported missing the prior day as severe winter weather impacted the region. [36] The Kansas Highway Patrol reported that one person was killed and another injured due to road icing, after their vehicle collided with a jackknifed trailer while driving eastbound on U.S. Route 56 ...
The average household size was 2.41 and the average family size was 2.94. The median age was 42.0 years. [16] The median income for a household in the county was $48,502 and the median income for a family was $60,759. Males had a median income of $42,114 versus $30,920 for females. The per capita income for the county was $24,440.
Illinois averages approximately 51 days of thunderstorm activity a year, which ranks somewhat above average in the number of thunderstorm days for the United States. Illinois is vulnerable to tornadoes, with an average of 54 occurring annually, which puts much of the state at around five tornadoes per 10,000 sq mi (30,000 km 2 ) annually. [ 74 ]
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On the evening of July 13, a multitude of shortwave troughs were tracking southeastward across Saskatchewan, towards an area of east-southeasterly low-level winds, which, alongside favorable wind shear and daytime heating contributing to atmospheric instability, led the Storm Prediction Center to issue a wind-driven Enhanced (3/5) risk over Montana, North Dakota, and South Dakota at the 20Z ...
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