Heavy Snow, Jo Daviess
- When
- December 20, 7:00 AM CST to 11:00 PM CST
- Where
- Jo Daviess forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 42.366, -90.212 (the zone’s center; the record gives no point)
Heavy Snow in Illinois, December 20, 2000
Yet another Alberta Clipper storm chugged into the upper Midwest during the early morning hours of 12/20, this time tracking from the high Plains into Minnesota and Wisconsin. The system brought periods of heavy snow to the area.
Where it happened
Every event with a place to put it; 13 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
- 13
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 DVN wrote it up.
Yet another Alberta Clipper storm chugged into the upper Midwest during the early morning hours of 12/20, this time tracking from the high Plains into Minnesota and Wisconsin. The system brought periods of heavy snow to the area. The snow began in east central and northeast Iowa around sunrise, and then spread south and east into northwest Illinois through the morning hours. The heaviest amounts of 4 to 5 inches fell north of Interstate 80, with 1 to 3 inch amounts to the south. The snow once again kept area law enforcement officials busy, with many accidents across the area. The snow had tapered to flurries by midnight. As low pressure headed off to the northeast, a northwest wind picked up to 20 to 30 miles an hour during the overnight, and produced bitterly cold wind chills of 30 to 45 below zero, as actual temperatures dropped into the single digits. Blowing and drifting snow continued into the day on 12/21.
The radar
The national radar mosaic for the moment the first event began.
Event by event
13 heavy snow. Local standard time, as filed.
Heavy Snow, McDonough
- When
- December 20, 7:00 AM CST to 11:00 PM CST
- Where
- McDonough forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 40.456, -90.678 (the zone’s center; the record gives no point)
Heavy Snow, Mercer
- When
- December 20, 7:00 AM CST to 11:00 PM CST
- Where
- Mercer forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.205, -90.741 (the zone’s center; the record gives no point)
Heavy Snow, Putnam
- When
- December 20, 7:00 AM CST to 11:00 PM CST
- Where
- Putnam forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.205, -89.286 (the zone’s center; the record gives no point)
Heavy Snow, Rock Island
- When
- December 20, 7:00 AM CST to 11:00 PM CST
- Where
- Rock Island forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.467, -90.567 (the zone’s center; the record gives no point)
Heavy Snow, Stephenson
- When
- December 20, 7:00 AM CST to 11:00 PM CST
- Where
- Stephenson forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 42.352, -89.662 (the zone’s center; the record gives no point)
Heavy Snow, Warren
- When
- December 20, 7:00 AM CST to 11:00 PM CST
- Where
- Warren forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 40.849, -90.615 (the zone’s center; the record gives no point)
Heavy Snow, Whiteside
- When
- December 20, 7:00 AM CST to 11:00 PM CST
- Where
- Whiteside forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.756, -89.914 (the zone’s center; the record gives no point)
Heavy Snow, Bureau
- When
- December 20, 7:00 AM CST to 11:00 PM CST
- Where
- Bureau forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.404, -89.529 (the zone’s center; the record gives no point)
Heavy Snow, Carroll
- When
- December 20, 7:00 AM CST to 11:00 PM CST
- Where
- Carroll forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 42.069, -89.934 (the zone’s center; the record gives no point)
Heavy Snow, Hancock
- When
- December 20, 7:00 AM CST to 11:00 PM CST
- Where
- Hancock forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 40.404, -91.165 (the zone’s center; the record gives no point)
Heavy Snow, Henderson
- When
- December 20, 7:00 AM CST to 11:00 PM CST
- Where
- Henderson forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 40.818, -90.925 (the zone’s center; the record gives no point)
Heavy Snow, Henry
- When
- December 20, 7:00 AM CST to 11:00 PM CST
- Where
- Henry forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.353, -90.131 (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
- Frost and Freeze in Florida, December 20, 2000
- Heavy Snow in Iowa, December 20, 2000
- Blizzard in North Dakota, December 20, 2000
- Frost and Freeze in Florida, December 20 to 21, 2000
- Winter Storm in Mississippi, December 20 to 21, 2000
- Winter Storm in Minnesota, December 20, 2000
- Blizzard in Minnesota, December 20, 2000
- High Surf in Hawaii, December 20 to 27, 2000
- Heavy Snow in Maine, December 20, 2000
- Heavy Snow in Michigan, December 20 to 22, 2000
- Winter Storm in Maine, December 20, 2000
- Winter Storm in Minnesota, December 20, 2000
More
Every storm in Illinois in 2000Every state in 2000This day in weather historyWarnings in Illinois, December 2000
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 2026-09-24. Each event’s entry at NCEI: 5177228, 5177229, 5177230, 5177231, 5177232, 5177320, 5177321, 5177322, 5178575, 5178576, 5178577, 5178578, 5178579.