Storm Record · Waukesha County
September 27, 2009: Straight-line wind in Waukesha County
1″
Largest hail
64
Strongest gust
2
NWS reports
What the National Weather Service recorded
Isolated severe storms with large hail and/or winds affected parts of Waukesha County in southeast Wisconsin. These severe storms were associated with the 2nd of two lines of storms generated by a storng cold front moving west across southern Wisconsin. Many of the other storms in both lines produced sub-severe wind gusts of 39 to 43 knots (45 to 50 mph) and pea-size hail. The ground was covered white with pea-size hail in Middleton, Dane County.
Source: NOAA Storm Events Database · episode 33906
Every report, in the Weather Service's words
Where It Hit
| Location | County | Hazard | Size | Report |
|---|---|---|---|---|
| Delafield (2 ESE) | Waukesha | Wind | 64 mph wind | Powerful thunderstorm wind gusts toppled a few large trees and sheared off a couple pine trees. |
| Downtown Waukesha (4 N) | Waukesha | Hail | 1" hail |