Illinois, 2009

Freezing Fog in Illinois, December 21, 2009

December 21, 2009 · NWS PAH · 4 events in 4 counties and zones

With cold air in place and sufficient moisture content in the lowest levels of the atmosphere, freezing fog developed along the Ohio River in southernmost Illinois. Several accidents were reported on the Interstate 24 bridge crossing the Ohio River.

Where it happened

Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

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  • Wind
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  • Winter weather
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  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
4

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 PAH wrote it up.

With cold air in place and sufficient moisture content in the lowest levels of the atmosphere, freezing fog developed along the Ohio River in southernmost Illinois. Several accidents were reported on the Interstate 24 bridge crossing the Ohio River. The Ohio River bridge on U.S. Highway 60/51 near Cairo was closed for about an hour due to accidents. Icy conditions were reported on many other bridges and overpasses. Visibility was reduced to as low as one mile at the airports near Metropolis and Cairo.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

4 freezing fog. Local standard time, as filed.

Freezing Fog, Alexander

When
December 21, 6:00 AM CST to 9:00 AM CST
Where
Alexander forecast zone
Reported by
AWOS
Coordinates
37.192, -89.338 (the zone’s center; the record gives no point)

Freezing Fog, Pulaski

When
December 21, 6:00 AM CST to 9:00 AM CST
Where
Pulaski forecast zone
Reported by
AWOS
Coordinates
37.223, -89.127 (the zone’s center; the record gives no point)

Freezing Fog, Massac

When
December 21, 6:00 AM CST to 9:00 AM CST
Where
Massac forecast zone
Reported by
AWOS
Coordinates
37.219, -88.708 (the zone’s center; the record gives no point)

Freezing Fog, Pope

When
December 21, 6:00 AM CST to 9:00 AM CST
Where
Pope forecast zone
Reported by
AWOS
Coordinates
37.413, -88.562 (the zone’s center; the record gives no point)

What these are

Freezing Fog
Fog that froze on contact with roads, vehicles or structures.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Illinois in 2009Every state in 2009This day in weather historyWarnings in Illinois, December 2009

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 2026-10-01. Each event’s entry at NCEI: 207159, 207160, 207161, 207162.