Dense Fog, Walworth
- When
- March 21, 1:00 AM CST to 10:00 AM CST
- Where
- Walworth forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 42.669, -88.542 (the zone’s center; the record gives no point)
Dense Fog in Wisconsin, March 21, 2000
Dense fog developed during the overnight hours and reduced visibilities to 1/4 mile or less. Numerous vehicle accidents resulted.
Where it happened
Every event with a place to put it; 11 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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 11
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 during the overnight hours and reduced visibilities to 1/4 mile or less. Numerous vehicle accidents resulted.
The radar
The national radar mosaic for the moment the first event began.
Event by event
11 dense fog. Local standard time, as filed.
Dense Fog, Racine
- When
- March 21, 1:00 AM CST to 10:00 AM CST
- Where
- Racine forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 42.730, -87.812 (the zone’s center; the record gives no point)
Dense Fog, Kenosha
- When
- March 21, 1:00 AM CST to 10:00 AM CST
- Where
- Kenosha forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 42.573, -87.840 (the zone’s center; the record gives no point)
Dense Fog, Fond du Lac
- When
- March 21, 1:00 AM CST to 10:00 AM CST
- Where
- Fond du Lac forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 43.754, -88.488 (the zone’s center; the record gives no point)
Dense Fog, Sheboygan
- When
- March 21, 1:00 AM CST to 10:00 AM CST
- Where
- Sheboygan forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 43.756, -87.800 (the zone’s center; the record gives no point)
Dense Fog, Dodge
- When
- March 21, 1:00 AM CST to 10:00 AM CST
- Where
- Dodge forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 43.416, -88.707 (the zone’s center; the record gives no point)
Dense Fog, Washington
- When
- March 21, 1:00 AM CST to 10:00 AM CST
- Where
- Washington forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 43.369, -88.231 (the zone’s center; the record gives no point)
Dense Fog, Ozaukee
- When
- March 21, 1:00 AM CST to 10:00 AM CST
- Where
- Ozaukee forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 43.403, -87.891 (the zone’s center; the record gives no point)
Dense Fog, Jefferson
- When
- March 21, 1:00 AM CST to 10:00 AM CST
- Where
- Jefferson forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 43.021, -88.776 (the zone’s center; the record gives no point)
Dense Fog, Waukesha
- When
- March 21, 1:00 AM CST to 10:00 AM CST
- Where
- Waukesha forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 43.018, -88.304 (the zone’s center; the record gives no point)
Dense Fog, Milwaukee
- When
- March 21, 1:00 AM CST to 10:00 AM CST
- Where
- Milwaukee forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 43.022, -87.929 (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
- Tornadoes and Flash Flooding in Texas, March 21 to 22, 2000
- Hail and Damaging Winds in Texas, March 21 to 22, 2000
- Hail in Texas, March 21, 2000
- Flash Flooding and Flood in Pennsylvania, March 21 to 23, 2000
- Winter Storm and Heavy Rain in Virginia, March 21, 2000
- Flash Flooding and Winter Storm in Maryland, March 21 to 22, 2000
- Flash Flooding and Heavy Rain in New Jersey, March 21 to 22, 2000
- Winter Storm in New Mexico, March 21 to 23, 2000
- Flooding in New Jersey, March 21 to 22, 2000
- Winter Storm and Winter Weather in West Virginia, March 21, 2000
- Heavy Rain in Maryland, March 21 to 22, 2000
- Flood and High Wind in Delaware, March 21, 2000
More
Every storm in Wisconsin in 2000Every state in 2000This day in weather historyWarnings in Wisconsin, March 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: 5135570, 5135571, 5135572, 5137188, 5137189, 5137190, 5137191, 5137192, 5137193, 5137194, 5137195.