Wisconsin, 2007

Dense Fog in Wisconsin, March 23 to 24, 2007

March 23 to 24, 2007 · NWS MKX · 16 events in 16 counties and zones

Dense fog developed overnight across most of south-central and southeast Wisconsin. ), and other airports.

Where it happened

Every event with a place to put it; 16 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

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
16

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.

Dense fog developed overnight across most of south-central and southeast Wisconsin. Visibilities dropped to 1/8 to 1/4 mile, resulting in delayed or cancelled flights at Milwaukee Mitchell Field (Milwaukee Co.), at Madison Truax Field (Dane Co.), and other airports. Newspaper reports indicated that there were several vehilce accidents. Prior to the dense fog, scattered light rain fell during the afternoon and early evening hours. Weak low-level winds and a moist low-level atmosphere then set the stage for dense fog once the sky became mostly clear.

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.

Hazardous weather outlook, Mar 23, 6:30 PM CST, 1 hour 30 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

16 dense fog. Local standard time, as filed.

Dense Fog, Sauk

When
March 23, 8:00 PM CST to March 24, 9:00 AM CST
Where
Sauk forecast zone
Reported by
ASOS
Coordinates
43.427, -89.948 (the zone’s center; the record gives no point)

Dense Fog, Columbia

When
March 23, 8:00 PM CST to March 24, 9:00 AM CST
Where
Columbia forecast zone
Reported by
ASOS
Coordinates
43.467, -89.334 (the zone’s center; the record gives no point)

Dense Fog, Dodge

When
March 23, 8:00 PM CST to March 24, 9:00 AM CST
Where
Dodge forecast zone
Reported by
ASOS
Coordinates
43.416, -88.707 (the zone’s center; the record gives no point)

Dense Fog, Washington

When
March 23, 8:00 PM CST to March 24, 9:00 AM CST
Where
Washington forecast zone
Reported by
ASOS
Coordinates
43.369, -88.231 (the zone’s center; the record gives no point)

Dense Fog, Ozaukee

When
March 23, 8:00 PM CST to March 24, 9:00 AM CST
Where
Ozaukee forecast zone
Reported by
ASOS
Coordinates
43.403, -87.891 (the zone’s center; the record gives no point)

Dense Fog, Iowa

When
March 23, 8:00 PM CST to March 24, 9:00 AM CST
Where
Iowa forecast zone
Reported by
ASOS
Coordinates
43.001, -90.135 (the zone’s center; the record gives no point)

Dense Fog, Dane

When
March 23, 8:00 PM CST to March 24, 9:00 AM CST
Where
Dane forecast zone
Reported by
ASOS
Coordinates
43.067, -89.418 (the zone’s center; the record gives no point)

Dense Fog, Jefferson

When
March 23, 8:00 PM CST to March 24, 9:00 AM CST
Where
Jefferson forecast zone
Reported by
ASOS
Coordinates
43.021, -88.776 (the zone’s center; the record gives no point)

Dense Fog, Waukesha

When
March 23, 8:00 PM CST to March 24, 9:00 AM CST
Where
Waukesha forecast zone
Reported by
ASOS
Coordinates
43.018, -88.304 (the zone’s center; the record gives no point)

Dense Fog, Milwaukee

When
March 23, 8:00 PM CST to March 24, 9:00 AM CST
Where
Milwaukee forecast zone
Reported by
ASOS
Coordinates
43.022, -87.929 (the zone’s center; the record gives no point)

Dense Fog, Lafayette

When
March 23, 8:00 PM CST to March 24, 9:00 AM CST
Where
Lafayette forecast zone
Reported by
ASOS
Coordinates
42.661, -90.132 (the zone’s center; the record gives no point)

Dense Fog, Green

When
March 23, 8:00 PM CST to March 24, 9:00 AM CST
Where
Green forecast zone
Reported by
ASOS
Coordinates
42.680, -89.602 (the zone’s center; the record gives no point)

Dense Fog, Rock

When
March 23, 8:00 PM CST to March 24, 9:00 AM CST
Where
Rock forecast zone
Reported by
ASOS
Coordinates
42.671, -89.072 (the zone’s center; the record gives no point)

Dense Fog, Walworth

When
March 23, 8:00 PM CST to March 24, 9:00 AM CST
Where
Walworth forecast zone
Reported by
ASOS
Coordinates
42.669, -88.542 (the zone’s center; the record gives no point)

Dense Fog, Racine

When
March 23, 8:00 PM CST to March 24, 9:00 AM CST
Where
Racine forecast zone
Reported by
ASOS
Coordinates
42.730, -87.812 (the zone’s center; the record gives no point)

Dense Fog, Kenosha

When
March 23, 8:00 PM CST to March 24, 9:00 AM CST
Where
Kenosha forecast zone
Reported by
ASOS
Coordinates
42.573, -87.840 (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 2007Every state in 2007This day in weather historyWarnings in Wisconsin, March 2007

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 2026-09-30. Each event’s entry at NCEI: 23750, 23751, 23752, 23753, 23754, 23755, 23756, 23757, 23758, 23759, 23760, 23761, 23762, 23763, 23764, 23765.