Wisconsin, 1999

Hail and Damaging Winds in Wisconsin, July 23, 1999

July 23, 1999 · NWS GRB · 7 events in 3 counties and zones

Thunderstorms developed during the morning near a warm front over central Wisconsin and in advance of a cold front in Minnesota. Some of the storms were severe and produced damaging winds and large hail as they moved across north-central and northeast Wisconsin.

Where it happened

Every event with a place to put it. 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

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
7

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 during the morning near a warm front over central Wisconsin and in advance of a cold front in Minnesota. Some of the storms were severe and produced damaging winds and large hail as they moved across north-central and northeast Wisconsin. Trees and power lines were downed in Vilas county and northern Lincoln county. Two campers were damaged by fallen trees at a campground in Boulder Junction (Vilas county) but there were no injuries. Some large hail fell as the storms moved through central Door county.

The radar

The Marquette radar (KMQT), 184 km away, was scanning. The volume nearest the first event began at 09:37 UTC.

Open the radar archive at this moment

Event by event

5 thunderstorm wind, 2 hail. Local standard time, as filed.

Thunderstorm Wind, Vilas

When
July 23, 3:40 AM CST
Where
Vilas County, Manitowish Waters
Measured
50 kt (58 mph)
Reported by
EMERGENCY MANAGER
Coordinates
46.130, -89.880

Thunderstorm Wind, Vilas

When
July 23, 4:00 AM CST
Where
Vilas County, 5 mi SW of Boulder Jct
Measured
50 kt (58 mph)
Reported by
EMERGENCY MANAGER
Coordinates
46.070, -89.700

Thunderstorm Wind, Lincoln

When
July 23, 4:00 AM CST
Where
Lincoln County, 6 mi N of Tomahawk
Measured
50 kt (58 mph)
Reported by
LAW ENFORCEMENT
Coordinates
45.550, -89.730

Thunderstorm Wind, Vilas

When
July 23, 4:05 AM CST
Where
Vilas County, Boulder Jct
Measured
50 kt (58 mph)
Reported by
EMERGENCY MANAGER
Coordinates
46.120, -89.630

Thunderstorm Wind, Vilas

When
July 23, 4:25 AM CST
Where
Vilas County, Land O Lakes
Measured
50 kt (58 mph)
Reported by
EMERGENCY MANAGER
Coordinates
46.130, -89.230

Hail, Door

When
July 23, 7:12 AM CST
Where
Door County, Egg Harbor
Measured
0.75 in hail
Reported by
LAW ENFORCEMENT
Coordinates
45.050, -87.280

Hail, Door

When
July 23, 7:12 AM CST
Where
Door County, Ephraim
Measured
0.75 in hail
Reported by
LAW ENFORCEMENT
Coordinates
45.150, -87.170

What these are

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.
Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

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 2026-10-01. Each event’s entry at NCEI: 5711107, 5711108, 5711109, 5711110, 5711111, 5711112, 5711113.