Wisconsin, 2000

Damaging Winds and Lightning Strikes in Wisconsin, August 26, 2000

August 26, 2000 · NWS MKX · 6 events in 3 counties and zones

Scattered severe storms with downburst winds gusting to around 52 knots (60 mph), resulting in large trees being pushed over or tree branches knocked down. The felled trees blocked a trailer park near Johnson Creek for several hours until cleanup crews could clear the debris.

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

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The toll

Deaths
0
Injuries
0
Property damage
$278,000
Crop damage
None recorded
Events
6

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.

Scattered severe storms with downburst winds gusting to around 52 knots (60 mph), resulting in large trees being pushed over or tree branches knocked down. The felled trees blocked a trailer park near Johnson Creek for several hours until cleanup crews could clear the debris. A lightning bolt started an attic fire in a Pewaukee home (Waukesha Co.). This fire would ultimately spread and cause considerable damage before being pt out. Rainfall amounts of 1.50 to 1.90 inches were reported within 1 to 3 hours in Wales and just south of Dousman (Waukesha Co.). However, no flooding was noted. Several lightning strikes in and around Milwaukee County knocked out some power transformers or other lines which resulted in the lose of power to about 10,000 customers. A common emergency communications line serving the cities of Delafield, Hartland, Chenequa, Pewaukee, Nashotah, Merten, Stone bank, and North Lake was struck by lightning and knocked out of service. Repair bills were about $10,000. Synoptically, a surface trough and an upper level short-wave moved southeast through Wisconsin, setting the stage for the cluster of storms to pass through.

The radar

The Milwaukee radar (KMKX), 30 km away, was scanning. The volume nearest the first event began at 13:57 UTC.

Open the radar archive at this moment

Event by event

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

Thunderstorm Wind, Jefferson

When
August 26, 8:00 AM CST
Where
Jefferson County, 2 mi S of Lake Mills
Property damage
$2,000
Reported by
LAW ENFORCEMENT
Coordinates
43.050, -88.900

Thunderstorm Wind, Jefferson

When
August 26, 8:17 AM CST to 8:20 AM CST
Where
Jefferson County, Johnson Creek
Property damage
$4,000
Reported by
NEWSPAPER
Coordinates
43.083, -88.767

Thunderstorm Wind, Waukesha

When
August 26, 8:35 AM CST
Where
Waukesha County, Wales
Property damage
$2,000
Reported by
LAW ENFORCEMENT
Coordinates
43.000, -88.367

Lightning, Waukesha

When
August 26, 8:54 AM CST
Where
Waukesha County, Pewaukee
Property damage
$210,000
Reported by
NEWSPAPER
Coordinates
43.018, -88.304 (the zone’s center; the record gives no point)

Lightning, Waukesha

When
August 26, 9:00 AM CST
Where
Waukesha County, Hartland
Property damage
$10,000
Reported by
NEWSPAPER
Coordinates
43.018, -88.304 (the zone’s center; the record gives no point)

Lightning, Milwaukee

When
August 26, 9:10 AM CST to 9:20 AM CST
Where
Milwaukee County, Countywide
Property damage
$50,000
Reported by
NEWSPAPER
Coordinates
43.022, -87.929 (the zone’s center; the record gives no point)

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.
Lightning
A lightning strike that killed, injured or caused damage.

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

The same day elsewhere

More

Every storm in Wisconsin in 2000Every state in 2000This day in weather historyWarnings in Wisconsin, August 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 2026-09-24. Each event’s entry at NCEI: 5172894, 5172895, 5172896, 5172897, 5173143, 5172898.