Dense Fog in Illinois, October 15 to 16, 2000

Name: Dense Fog in Illinois, October 15 to 16, 2000
Start: 2000-10-15T22:00
End: 2000-10-16T08:00
Location: Illinois

October 15 to 16, 2000 · NWS PAH · 19 events in 19 counties and zones

Widespread dense fog blanketed all of southern Illinois from late evening on the 15th until the mid morning hours on the 16th. State police reported a rollover vehicle accident in the Mount Vernon area was due to the fog.

Where it happened

Every event with a place to put it; 19 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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The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 19

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.

The radar

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

Open the radar archive at this moment

Event by event

19 dense fog. Local standard time, as filed.

Dense Fog, Alexander

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Alexander forecast zone
Reported by: NEWSPAPER
Coordinates: 37.192, -89.338 (the zone’s center; the record gives no point)

Dense Fog, Edwards

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Edwards forecast zone
Reported by: NEWSPAPER
Coordinates: 38.417, -88.053 (the zone’s center; the record gives no point)

Dense Fog, Franklin

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Franklin forecast zone
Reported by: NEWSPAPER
Coordinates: 37.992, -88.924 (the zone’s center; the record gives no point)

Dense Fog, Gallatin

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Gallatin forecast zone
Reported by: NEWSPAPER
Coordinates: 37.763, -88.230 (the zone’s center; the record gives no point)

Dense Fog, Hamilton

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Hamilton forecast zone
Reported by: NEWSPAPER
Coordinates: 38.082, -88.539 (the zone’s center; the record gives no point)

Dense Fog, Hardin

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Hardin forecast zone
Reported by: NEWSPAPER
Coordinates: 37.518, -88.267 (the zone’s center; the record gives no point)

Dense Fog, Jackson

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Jackson forecast zone
Reported by: NEWSPAPER
Coordinates: 37.785, -89.382 (the zone’s center; the record gives no point)

Dense Fog, Jefferson

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Jefferson forecast zone
Reported by: NEWSPAPER
Coordinates: 38.301, -88.924 (the zone’s center; the record gives no point)

Dense Fog, Johnson

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Johnson forecast zone
Reported by: NEWSPAPER
Coordinates: 37.460, -88.881 (the zone’s center; the record gives no point)

Dense Fog, Massac

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Massac forecast zone
Reported by: NEWSPAPER
Coordinates: 37.219, -88.708 (the zone’s center; the record gives no point)

Dense Fog, Perry

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Perry forecast zone
Reported by: NEWSPAPER
Coordinates: 38.084, -89.367 (the zone’s center; the record gives no point)

Dense Fog, Pope

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Pope forecast zone
Reported by: NEWSPAPER
Coordinates: 37.413, -88.562 (the zone’s center; the record gives no point)

Dense Fog, Pulaski

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Pulaski forecast zone
Reported by: NEWSPAPER
Coordinates: 37.223, -89.127 (the zone’s center; the record gives no point)

Dense Fog, Saline

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Saline forecast zone
Reported by: NEWSPAPER
Coordinates: 37.753, -88.541 (the zone’s center; the record gives no point)

Dense Fog, Union

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Union forecast zone
Reported by: NEWSPAPER
Coordinates: 37.471, -89.255 (the zone’s center; the record gives no point)

Dense Fog, Wabash

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Wabash forecast zone
Reported by: NEWSPAPER
Coordinates: 38.446, -87.844 (the zone’s center; the record gives no point)

Dense Fog, Wayne

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Wayne forecast zone
Reported by: NEWSPAPER
Coordinates: 38.430, -88.426 (the zone’s center; the record gives no point)

Dense Fog, White

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: White forecast zone
Reported by: NEWSPAPER
Coordinates: 38.088, -88.180 (the zone’s center; the record gives no point)

Dense Fog, Williamson

When: October 15, 10:00 PM CST to October 16, 8:00 AM CST
Where: Williamson forecast zone
Reported by: NEWSPAPER
Coordinates: 37.730, -88.930 (the zone’s center; the record gives no point)

What these are

Dense Fog: Fog reducing visibility to a quarter mile or less, filed where it caused accidents or disruption.

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

The same day elsewhere

Every storm in Illinois in 2000 Every state in 2000 This day in weather history Warnings in Illinois, October 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 2026-10-01. Each event’s entry at NCEI: 5175160, 5175161, 5175162, 5175163, 5175164, 5175165, 5175166, 5175167, 5175168, 5175169, 5175170, 5175171, 5175172, 5175173, 5175174, 5175175, 5175176, 5175177, 5175236.