Funnel Cloud, Door
- When
- September 9, 10:45 AM CST
- Where
- Door County, 5 mi W of Sturgeon Bay
- Reported by
- METEOROLOGIST(NON NWS)
- Coordinates
- 44.838, -87.358 (the zone’s center; the record gives no point)
Funnel Clouds and Waterspout in Wisconsin, September 9, 1999
Showers developed as cold air aloft caused the atmosphere to become more unstable. Funnel clouds were sighted over the Bay of Green Bay and the nearshore waters of Lake Michigan.
Where it happened
Every event with a place to put it; 3 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
- 3
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 GRB wrote it up.
Showers developed as cold air aloft caused the atmosphere to become more unstable. Funnel clouds were sighted over the Bay of Green Bay and the nearshore waters of Lake Michigan. One of the funnels briefly touched the water north of Sister Bay (Door county).
The radar
The Green Bay radar (KGRB), 71 km away, was scanning. The volume nearest the first event began at 16:46 UTC.
Event by event
2 funnel cloud, 1 waterspout. Local standard time, as filed.
Waterspout, Door
- When
- September 9, 2:55 PM CST
- Where
- Door County, 3 mi N of Sister Bay
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 44.838, -87.358 (the zone’s center; the record gives no point)
Funnel Cloud, Door
- When
- September 9, 3:18 PM CST
- Where
- Door County, 5 mi E of Sturgeon Bay
- Reported by
- OTHER FEDERAL AGENCY
- Coordinates
- 44.838, -87.358 (the zone’s center; the record gives no point)
What these are
- Funnel Cloud
- A rotating column of cloud extending from a thunderstorm that did not reach the ground.
- Waterspout
- A tornado over water. One that moves ashore is filed as a tornado from the coastline on.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Wildfire in California, September 9 to 11, 1999
- Damaging Winds in Pennsylvania, September 9 to 29, 1999
- Flash Flooding and Hail in Virginia, September 9, 1999
- Hail and Damaging Winds in North Carolina, September 9, 1999
- Lightning Strike in California, September 9, 1999
- Flash Flooding and Damaging Winds in Maryland, September 9, 1999
- Flash Flooding and Damaging Wind in Virginia, September 9, 1999
- Hail and Damaging Wind in Pennsylvania, September 9, 1999
- Heavy Rain in Pennsylvania, September 9, 1999
- Flash Flooding in Pennsylvania, September 9, 1999
- Dust Storm in Nevada, September 9, 1999
- Hail and Damaging Wind in Georgia, September 9, 1999
More
Every storm in Wisconsin in 1999Every state in 1999This day in weather historyWarnings in Wisconsin, September 1999
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 2026-09-24. Each event’s entry at NCEI: 5716752, 5716753, 5716754.