Heavy Snow, Cook
- When
- January 21, 4:00 PM CST to January 22, 4:00 PM CST
- Where
- Cook forecast zone
- Reported by
- OFFICIAL NWS OBS.
Heavy Snow in Illinois, January 21 to 22, 2005
During the evening of January 21, a low pressure system developed over the northern plains and tracked southeastward over western Illinois. The system then moved into northern Kentucky by the morning of January 22.
Where it happened
Every event with a place to put it; 9 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 11
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.
What happened
The episode as NWS LOT wrote it up.
During the evening of January 21, a low pressure system developed over the northern plains and tracked southeastward over western Illinois. The system then moved into northern Kentucky by the morning of January 22. During this period, the storm system produced heavy snow over much of northern Illinois and northwest Indiana. Snow Accumulation Reports:Winnebago:7.8 inches at Rockford AirportBoone:8.0 inches at BelvidereMcHenry:11.5 inches at McHenryLake:12.9 inches at lake VillaKane:13.0 inches at CarpentersvilleDu Page:9.9 inches in Bertlett Cook:15.0 inches in the Wrigleyville section of Chicago12.9 inches at Midway Airport (Burbank)11.0 inches at O'Hare International AirportWill:8.0 inches in Orland Hills
The radar
The national radar mosaic for the moment the first event began.
Event by event
11 heavy snow. Local standard time, as filed.
Heavy Snow, Du Page
- When
- January 21, 4:00 PM CST to January 22, 4:00 PM CST
- Where
- Du Page forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 41.852, -88.086 (the zone’s center; the record gives no point)
Heavy Snow, Will
- When
- January 21, 4:00 PM CST to January 22, 4:00 PM CST
- Where
- Will forecast zone
- Reported by
- OFFICIAL NWS OBS.
Heavy Snow, Lake
- When
- January 21, 4:00 PM CST to January 22, 4:00 PM CST
- Where
- Lake forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 42.349, -87.862 (the zone’s center; the record gives no point)
Heavy Snow, Boone
- When
- January 21, 4:00 PM CST to January 22, 4:00 PM CST
- Where
- Boone forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 42.323, -88.823 (the zone’s center; the record gives no point)
Heavy Snow, Winnebago
- When
- January 21, 4:00 PM CST to January 22, 4:00 PM CST
- Where
- Winnebago forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 42.336, -89.161 (the zone’s center; the record gives no point)
Heavy Snow, McHenry
- When
- January 21, 4:00 PM CST to January 22, 4:00 PM CST
- Where
- McHenry forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 42.324, -88.452 (the zone’s center; the record gives no point)
Heavy Snow, Kane
- When
- January 21, 4:00 PM CST to January 22, 4:00 PM CST
- Where
- Kane forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 41.939, -88.429 (the zone’s center; the record gives no point)
Heavy Snow, Ogle
- When
- January 21, 4:00 PM CST to January 22, 4:00 PM CST
- Where
- Ogle forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 42.043, -89.321 (the zone’s center; the record gives no point)
Heavy Snow, Kendall
- When
- January 21, 4:00 PM CST to January 22, 4:00 PM CST
- Where
- Kendall forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 41.591, -88.429 (the zone’s center; the record gives no point)
Heavy Snow, Kankakee
- When
- January 21, 4:00 PM CST to January 22, 4:00 PM CST
- Where
- Kankakee forecast zone
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 41.138, -87.862 (the zone’s center; the record gives no point)
What these are
- Heavy Snow
- Snowfall reaching the local warning threshold without the other hazards of a winter storm.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- High Wind in Minnesota, January 21 to 22, 2005
- Blizzard in Iowa, January 21 to 22, 2005
- Blizzard and Winter Storm in Minnesota, January 21 to 22, 2005
- Dense Fog in Nebraska, January 21, 2005
- Winter Storm in Wisconsin, January 21 to 22, 2005
- Blizzard in North Dakota, January 21 to 22, 2005
- Cold in New York, January 21 to 22, 2005
- Blizzard in Minnesota, January 21 to 22, 2005
- Winter Storm in Ohio, January 21, 2005
- Cold in Maine, January 21, 2005
- Cold in New York, January 21, 2005
- Winter Storm in Wisconsin, January 21 to 22, 2005
More
Every storm in Illinois in 2005Every state in 2005This day in weather historyWarnings in Illinois, January 2005
Sources
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 2026-09-30. Each event’s entry at NCEI: 5433054, 5433055, 5433056, 5433057, 5433058, 5433059, 5433060, 5433061, 5433062, 5433063, 5433064.