Storm Events Database

Event Details

Event Thunderstorm Wind
Magnitude 56 kts.
State WISCONSIN
County/Area COLUMBIA
WFO MKX
Report Source Law Enforcement
NCDC Data Source CSV
Begin Date 2010-08-09 01:52:00.0 CST-6
Begin Location 0N RIO
Begin Lat/Lon 43.45/-89.23
End Date 2010-08-09 02:10:00.0 CST-6
End Location 4SE CAMBRIA
End Lat/Lon 43.51/-89.04
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage
Crop Damage
Episode Narrative An upper level short wave trough moved rapidly eastward across the Upper Mississippi River Valley and into Wisconsin during the early morning hours of August 9th. The approaching short wave backed low level winds to the south, which brought a moist, unstable air mass into the region with CAPE values of 2000 to 3000 J/kg. A linear mesoscale convective system developed over Nebraska and moved eastward across northern Iowa on the nose of the 30-35 knot low-level winds. This system moved into Wisconsin shortly after 1 am CDT, with the bowing line of storms producing damaging winds along a 10-mile-wide path as it moved rapidly from west to east across South Central and Southeast Wisconsin. The line of thunderstorms extensively damaged trees and downed power lines, including knocking out electrical power to 1,300 Alliant Energy customers in eastern Sauk County and northwest Dane County. Madison Gas and Electric Company reported about 4,000 of their customers lost power on the southwest side of Madison.
Event Narrative Sheriff deputies reported sporadic tree damage from thunderstorm wind gusts estimated at 56 knots (65 mph).


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All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 12.00K 0.00K
DODGEVILLE IOWA CO. WI 08/09/2010 00:45 CST-6 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
LOGANVILLE SAUK CO. WI 08/09/2010 01:00 CST-6 Thunderstorm Wind 65 kts. EG 0 0 0.00K 0.00K
MINERAL PT IOWA CO. WI 08/09/2010 01:03 CST-6 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
LODI COLUMBIA CO. WI 08/09/2010 01:25 CST-6 Thunderstorm Wind 65 kts. EG 0 0 0.00K 0.00K
VERONA DANE CO. WI 08/09/2010 01:26 CST-6 Thunderstorm Wind 65 kts. EG 0 0 10.00K 0.00K
WESTFIELD MARQUETTE CO. WI 08/09/2010 01:30 CST-6 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
MIDDLETON DANE CO. WI 08/09/2010 01:34 CST-6 Thunderstorm Wind 65 kts. EG 0 0 2.00K 0.00K
RIO COLUMBIA CO. WI 08/09/2010 01:52 CST-6 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
EDGERTON ROCK CO. WI 08/09/2010 01:55 CST-6 Thunderstorm Wind 65 kts. EG 0 0 0.00K 0.00K
LAKE MILLS JEFFERSON CO. WI 08/09/2010 02:00 CST-6 Thunderstorm Wind 65 kts. EG 0 0 0.00K 0.00K
DOUSMAN WAUKESHA CO. WI 08/09/2010 02:30 CST-6 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
WEST BEND WASHINGTON CO. WI 08/09/2010 02:50 CST-6 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
MILWAUKEE TIMMERMAN AIRPORT MILWAUKEE CO. WI 08/09/2010 03:00 CST-6 Thunderstorm Wind 54 kts. EG 0 0 0.00K 0.00K
Totals: 0 0 12.00K 0.00K