Dense Fog, Marquette
- When
- January 9, 12:00 AM CST to January 10, 5:00 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 in Wisconsin, January 9 to 10, 2000
Dense fog with visibilities frequently near or below 1/4 mile blanketed southcentral and southeast Wisconsin for about 29 hours, leading to many airline delays or cancellations at area airports. Dozens of vehicle accidents were noted by area newspapers.
Where it happened
Every event with a place to put it; 20 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
- 20
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 with visibilities frequently near or below 1/4 mile blanketed southcentral and southeast Wisconsin for about 29 hours, leading to many airline delays or cancellations at area airports. Dozens of vehicle accidents were noted by area newspapers. South to southeast winds pulled mild air (maximum temperatures in the upper 30s to lower 40s) into southern Wisconsin resulting in considerable snowmelt, while scattered light rain passed overhead. Consequently, there were ample amounts of low level moisture to initiate the widespread dense fog.
The radar
The national radar mosaic for the moment the first event began.
Event by event
20 dense fog. Local standard time, as filed.
Dense Fog, Green Lake
- When
- January 9, 12:00 AM CST to January 10, 5:00 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, Fond du Lac
- When
- January 9, 12:00 AM CST to January 10, 5:00 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
- January 9, 12:00 AM CST to January 10, 5:00 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, Sauk
- When
- January 9, 12:00 AM CST to January 10, 5:00 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
- January 9, 12:00 AM CST to January 10, 5:00 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, Dodge
- When
- January 9, 12:00 AM CST to January 10, 5:00 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
- January 9, 12:00 AM CST to January 10, 5:00 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
- January 9, 12:00 AM CST to January 10, 5:00 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, Iowa
- When
- January 9, 12:00 AM CST to January 10, 5:00 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
- January 9, 12:00 AM CST to January 10, 5:00 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, Jefferson
- When
- January 9, 12:00 AM CST to January 10, 5:00 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
- January 9, 12:00 AM CST to January 10, 5:00 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
- January 9, 12:00 AM CST to January 10, 5:00 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)
Dense Fog, Lafayette
- When
- January 9, 12:00 AM CST to January 10, 5:00 AM CST
- Where
- Lafayette forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 42.661, -90.132 (the zone’s center; the record gives no point)
Dense Fog, Green
- When
- January 9, 12:00 AM CST to January 10, 5:00 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)
Dense Fog, Rock
- When
- January 9, 12:00 AM CST to January 10, 5:00 AM CST
- Where
- Rock forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 42.671, -89.072 (the zone’s center; the record gives no point)
Dense Fog, Walworth
- When
- January 9, 12:00 AM CST to January 10, 5:00 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, Racine
- When
- January 9, 12:00 AM CST to January 10, 5:00 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
- January 9, 12:00 AM CST to January 10, 5:00 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)
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
- Tornado in Alabama, January 9, 2000
- Damaging Wind in Alabama, January 9 to 10, 2000
- High Wind in Montana, January 9, 2000
- High Wind in Washington, January 9, 2000
- High Wind in Idaho, January 9, 2000
- Tornado in Alabama, January 9, 2000
- Damaging Wind in Louisiana, January 9, 2000
- Heavy Snow and High Wind in Colorado, January 9 to 10, 2000
- Damaging Wind in Louisiana, January 9, 2000
- Dense Fog in Wisconsin, January 9 to 10, 2000
- Frost and Freeze in Wisconsin, January 9 to 10, 2000
- High Wind in Montana, January 9 to 10, 2000
More
Every storm in Wisconsin in 2000Every state in 2000This day in weather historyWarnings in Wisconsin, January 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: 5129297, 5129298, 5129299, 5129390, 5129391, 5129392, 5129393, 5129394, 5129644, 5129645, 5129646, 5129647, 5129648, 5129747, 5129748, 5129749, 5129750, 5129751, 5129752, 5129753.