Wisconsin, 2001

Dense Fog in Wisconsin, June 7 to 8, 2001

June 7 to 8, 2001 · NWS MKX · 7 events in 7 counties and zones

Very dense fog developed during the early evening across parts of south-central Wisconsin, but broke up before sunrise the next day. Visibilities were reduced to 1/16 to 1/4 mile.

Where it happened

Every event with a place to put it; 7 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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  • Floods
  • Wind
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  • Cold
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  • Marine and coastal
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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
7

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 MKX wrote it up.

Very dense fog developed during the early evening across parts of south-central Wisconsin, but broke up before sunrise the next day. Visibilities were reduced to 1/16 to 1/4 mile. About a dozen vehicle accidents were noted in local newspapers, and several airplane flights were delayed at area airports. The very dense fog was the result of radiational cooling, clear skies, and light and variable winds. Surface dewpoints were in the 50 to 55 degree range.

The radar

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

Open the radar archive at this moment

Event by event

7 dense fog. Local standard time, as filed.

Dense Fog, Marquette

When
June 7, 5:30 PM CST to June 8, 1:00 AM CST
Where
Marquette forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
43.820, -89.399 (the zone’s center; the record gives no point)

Dense Fog, Green Lake

When
June 7, 5:30 PM CST to June 8, 1:00 AM CST
Where
Green Lake forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
43.800, -89.045 (the zone’s center; the record gives no point)

Dense Fog, Sauk

When
June 7, 5:30 PM CST to June 8, 1:00 AM CST
Where
Sauk forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
43.427, -89.948 (the zone’s center; the record gives no point)

Dense Fog, Columbia

When
June 7, 5:30 PM CST to June 8, 1:00 AM CST
Where
Columbia forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
43.467, -89.334 (the zone’s center; the record gives no point)

Dense Fog, Iowa

When
June 7, 5:30 PM CST to June 8, 1:00 AM CST
Where
Iowa forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
43.001, -90.135 (the zone’s center; the record gives no point)

Dense Fog, Dane

When
June 7, 5:30 PM CST to June 8, 1:00 AM CST
Where
Dane forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
43.067, -89.418 (the zone’s center; the record gives no point)

Dense Fog, Green

When
June 7, 5:30 PM CST to June 8, 1:00 AM CST
Where
Green forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
42.680, -89.602 (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

More

Every storm in Wisconsin in 2001Every state in 2001This day in weather historyWarnings in Wisconsin, June 2001

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: 5255890, 5255891, 5255892, 5255893, 5255894, 5255895, 5255896.