Wisconsin, 1999

Flooding and Damaging Winds in Wisconsin, July 8, 1999

July 8, 1999 · NWS GRB · 22 events in 13 counties and zones

Thunderstorms developed ahead of a cold front in Minnesota and moved through northeast Wisconsin during the evening. Severe thunderstorms downed numerous trees and power lines across northeast Wisconsin.

Where it happened

Every event with a place to put it; 6 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
2
Property damage
$55,000
Crop damage
None recorded
Events
22

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.

Thunderstorms developed ahead of a cold front in Minnesota and moved through northeast Wisconsin during the evening. Severe thunderstorms downed numerous trees and power lines across northeast Wisconsin. Wind gusts were as high as 70 to 80 mph. Emergency government officials in Marathon county reported extensive damage, especially around Stratford. They received numerous reports of trees down on power lines and roads, 4 reports of barns destroyed or damaged, 1 house destroyed and 8 houses damaged by the strong winds. The storm knocked out power to 2,500 customers in Marathon county, mainly in the the Wausau, Mosinee and Stratford areas. Street flooding was reported in New London (Waupaca and Outagamie counties) and Antigo (Langlade county). Homes in Antigo also experienced some basement flooding.

The radar

The Green Bay radar (KGRB), 158 km away, was scanning. The volume nearest the first event began at 00:05 UTC.

Open the radar archive at this moment

Event by event

16 thunderstorm wind, 3 lightning, 3 flood. Local standard time, as filed.

Lightning, Lincoln

When
July 8, 1:30 PM CST
Where
Lincoln County, 1 mi E of Tomahawk
Injuries
1 direct, 0 indirect
Reported by
NEWSPAPER
Coordinates
45.338, -89.735 (the zone’s center; the record gives no point)

Thunderstorm Wind, Lincoln

When
July 8, 6:05 PM CST
Where
Lincoln County, Tomahawk
Measured
50 kt (58 mph)
Reported by
LAW ENFORCEMENT
Coordinates
45.470, -89.730

Lightning, Lincoln

When
July 8, 6:05 PM CST
Where
Lincoln County, Tomahawk
Injuries
1 direct, 0 indirect
Reported by
LAW ENFORCEMENT
Coordinates
45.338, -89.735 (the zone’s center; the record gives no point)

Thunderstorm Wind, Marathon

When
July 8, 6:11 PM CST to 6:58 PM CST
Where
Marathon County, Countywide
Measured
70 kt (81 mph)
Property damage
$55,000
Reported by
LAW ENFORCEMENT
Coordinates
44.900, -89.720

Thunderstorm Wind, Langlade

When
July 8, 6:15 PM CST
Where
Langlade County, Antigo
Measured
50 kt (58 mph)
Reported by
NEWSPAPER
Coordinates
45.150, -89.150

Thunderstorm Wind, Wood

When
July 8, 6:15 PM CST
Where
Wood County, Marshfield
Measured
50 kt (58 mph)
Reported by
LAW ENFORCEMENT
Coordinates
44.670, -90.170

Flood, Langlade

When
July 8, 6:52 PM CST to 8:00 PM CST
Where
Langlade County, Antigo
Reported by
NEWSPAPER
Coordinates
45.262, -89.072 (the zone’s center; the record gives no point)

Thunderstorm Wind, Shawano

When
July 8, 6:58 PM CST
Where
Shawano County, Morgan
Measured
50 kt (58 mph)
Reported by
LAW ENFORCEMENT
Coordinates
44.880, -88.820

Thunderstorm Wind, Wood

When
July 8, 7:05 PM CST
Where
Wood County, Arpin
Measured
50 kt (58 mph)
Reported by
LAW ENFORCEMENT
Coordinates
44.550, -90.030

Thunderstorm Wind, Portage

When
July 8, 7:08 PM CST
Where
Portage County, 5 mi W of Stevens Pt
Measured
50 kt (58 mph)
Reported by
LAW ENFORCEMENT
Coordinates
44.520, -89.670

Thunderstorm Wind, Shawano

When
July 8, 7:17 PM CST
Where
Shawano County, Shawano
Measured
50 kt (58 mph)
Reported by
LAW ENFORCEMENT
Coordinates
44.770, -88.600

Thunderstorm Wind, Waupaca

When
July 8, 7:21 PM CST
Where
Waupaca County, Waupaca
Measured
50 kt (58 mph)
Reported by
LAW ENFORCEMENT
Coordinates
44.350, -89.070

Flood, Waupaca

When
July 8, 7:33 PM CST to 7:54 PM CST
Where
Waupaca County, New London
Reported by
AMATEUR RADIO
Coordinates
44.470, -88.965 (the zone’s center; the record gives no point)

Flood, Outagamie

When
July 8, 7:33 PM CST to 7:54 PM CST
Where
Outagamie County, New London
Reported by
AMATEUR RADIO
Coordinates
44.416, -88.465 (the zone’s center; the record gives no point)

Thunderstorm Wind, Waushara

When
July 8, 7:44 PM CST
Where
Waushara County, Redgranite
Measured
50 kt (58 mph)
Reported by
LAW ENFORCEMENT
Coordinates
44.030, -89.100

Thunderstorm Wind, Calumet

When
July 8, 7:45 PM CST
Where
Calumet County, Chilton
Measured
50 kt (58 mph)
Reported by
LAW ENFORCEMENT
Coordinates
44.030, -88.170

Lightning, Portage

When
July 8, 7:46 PM CST
Where
Portage County, 17 mi NE of Stevens Pt
Reported by
NEWSPAPER
Coordinates
44.476, -89.501 (the zone’s center; the record gives no point)

Thunderstorm Wind, Winnebago

When
July 8, 7:53 PM CST
Where
Winnebago County, Winneconne
Measured
52 kt (60 mph)
Reported by
AMATEUR RADIO
Coordinates
44.120, -88.720

Thunderstorm Wind, Winnebago

When
July 8, 8:11 PM CST
Where
Winnebago County, Oshkosh
Measured
50 kt (58 mph)
Reported by
LAW ENFORCEMENT
Coordinates
44.020, -88.550

Thunderstorm Wind, Winnebago

When
July 8, 8:16 PM CST
Where
Winnebago County, Oshkosh
Measured
56 kt (64 mph)
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
44.020, -88.550

Thunderstorm Wind, Kewaunee

When
July 8, 8:30 PM CST
Where
Kewaunee County, Stangelville
Measured
50 kt (58 mph)
Reported by
AMATEUR RADIO
Coordinates
44.400, -87.680

Thunderstorm Wind, Door

When
July 8, 9:41 PM CST
Where
Door County, 4 mi E of Maplewood
Measured
50 kt (58 mph)
Reported by
AMATEUR RADIO
Coordinates
44.750, -87.400

What these are

Lightning
A lightning strike that killed, injured or caused damage.
Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Wisconsin in 1999Every state in 1999This day in weather historyWarnings in Wisconsin, July 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: 5711090, 5712620, 5712621, 5712623, 5711096, 5712622, 5711097, 5712626, 5712624, 5712625, 5712627, 5711095, 5711092, 5711093, 5712628, 5712629, 5711091, 5712630, 5711087, 5711088, 5711089, 5711094.