Strong winds developed over northern Illinois during the evening of October 6th and continued into the early morning hours of October 7th. Wind gusts were generally between 40 mph and 50 mph.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LOT wrote it up.
Strong winds developed over northern Illinois during the evening of October 6th and continued into the early morning hours of October 7th. Wind gusts were generally between 40 mph and 50 mph. A peak wind gust of 53 mph was measured at Midway Airport and a peak wind gust of 47 mph was measured at O'Hare Airport. Numerous tree limbs and power lines were blown down.
1 strong wind. Local standard time, as filed.
Six large tree limbs were blown down in Morton Grove which brought down power lines.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2009Every state in 2009This day in weather historyWarnings in Illinois, October 2009
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 204805.