Wisconsin, 2009

Dense Fog in Wisconsin, February 10, 2009

February 10, 2009 · NWS MKX · 1 event in 1 county or zone

Warm southeast winds flowing over the relatively cold waters of Lake Michigan produced dense fog over Sheboygan County during the overnight hours. Visibilities were reduced to 1/4 mile.

Where it happened

Every event with a place to put it; 1 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
1

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.

Warm southeast winds flowing over the relatively cold waters of Lake Michigan produced dense fog over Sheboygan County during the overnight hours. Visibilities were reduced to 1/4 mile.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Milwaukee, WI wrote its last area forecast discussion before the first event at Feb 10, 3:34 AM CST, 1 hour 56 minutes earlier.

Area forecast discussion, Feb 10, 3:34 AM CST, 1 hour 56 minutes before
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Hazardous weather outlook, Feb 10, 5:19 AM CST, 11 minutes before
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The radar

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

Open the radar archive at this moment

Event by event

1 dense fog. Local standard time, as filed.

Dense Fog, Sheboygan

When
February 10, 5:30 AM CST to 12:00 PM CST
Where
Sheboygan forecast zone
Reported by
ASOS
Coordinates
43.756, -87.800 (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 2009Every state in 2009This day in weather historyWarnings in Wisconsin, February 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: 164652.