Storm Events Database

Event Details

Event Hail
Magnitude 0.75 in.
State WISCONSIN
County/Area ONEIDA
WFO GRB
Report Source Trained Spotter
NCDC Data Source CSV
Begin Date 2010-08-20 06:25:00.0 CST-6
Begin Location 1SE LAKE TOMAHAWK
Begin Lat/Lon 45.81/-89.59
End Date 2010-08-20 06:25:00.0 CST-6
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 0.00K
Crop Damage 0.00K
Episode Narrative A line of thunderstorms developed north of a warm front that was slowly moving from south to north across Wisconsin. The line of storms moved east across northern Wisconsin during the morning, producing penny to nickel size hail in Vilas County and Oneida County. More storms developed during the afternoon as a pair of upper level disturbances passed over the state. These storms produced large hail, wind damage, flooding rains and a tornado.
Severe storms with heavy rains, hail, high winds, and a tornado, moved across the Fox Valley and Green Bay late in the afternoon. Highs winds blew down trees and damaged buildings at several locations. Hail over an inch in diameter fell in Green Bay and De Pere. Intense rains caused flooding in Green Bay.
In addition, thunderstorm winds produced a seiche on the northern shore of Lake Winnebago. Water rose into the yards of several shoreline homes.
Event Narrative Penny size hail fell accompanied by torrential rain at Lake Tomahawk.


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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 4 208.00K 0.00K
HAZELHURST ONEIDA CO. WI 08/20/2010 06:15 CST-6 Hail 0.88 in. 0 0 0.00K 0.00K
LAKE TOMAHAWK ONEIDA CO. WI 08/20/2010 06:25 CST-6 Hail 0.75 in. 0 0 0.00K 0.00K
LAND O LAKES VILAS CO. WI 08/20/2010 09:59 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
NEW LONDON WAUPACA CO. WI 08/20/2010 14:13 CST-6 Thunderstorm Wind 78 kts. EG 0 0 100.00K 0.00K
ALLOUEZ BROWN CO. WI 08/20/2010 14:25 CST-6 Hail 1.50 in. 0 0 0.00K 0.00K
BELLEVUE BROWN CO. WI 08/20/2010 14:32 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
GREEN BAY BROWN CO. WI 08/20/2010 14:37 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
GREEN BAY BROWN CO. WI 08/20/2010 14:38 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
NEENAH WINNEBAGO CO. WI 08/20/2010 14:50 CST-6 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
DARBOY CALUMET CO. WI 08/20/2010 15:00 CST-6 Hail 0.88 in. 0 0 0.00K 0.00K
KAUKAUNA OUTAGAMIE CO. WI 08/20/2010 15:07 CST-6 Hail 0.88 in. 0 0 0.00K 0.00K
GREEN BAY BROWN CO. WI 08/20/2010 15:15 CST-6 Flash Flood 0 0 8.00K 0.00K
BELLEVUE BROWN CO. WI 08/20/2010 15:18 CST-6 Thunderstorm Wind 54 kts. MG 0 0 0.00K 0.00K
GREENLEAF BROWN CO. WI 08/20/2010 15:20 CST-6 Tornado EF1 0 0 100.00K 0.00K
GREENLEAF BROWN CO. WI 08/20/2010 15:20 CST-6 Thunderstorm Wind 74 kts. EG 0 0 0.00K 0.00K
ROSIERE KEWAUNEE CO. WI 08/20/2010 15:40 CST-6 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
MANITOWOC MANITOWOC CO. WI 08/20/2010 17:00 CST-6 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
OSHKOSH WINNEBAGO CO. WI 08/20/2010 17:00 CST-6 Thunderstorm Wind 56 kts. EG 0 0 0.00K 0.00K
DARBOY CALUMET CO. WI 08/20/2010 17:15 CST-6 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
WINNEBAGO (ZONE) WINNEBAGO (ZONE) WI 08/20/2010 17:15 CST-6 Seiche 0 0 0.00K 0.00K
CALUMET (ZONE) CALUMET (ZONE) WI 08/20/2010 17:15 CST-6 Seiche 0 0 0.00K 0.00K
GREENVILLE OUTAGAMIE CO. WI 08/20/2010 17:26 CST-6 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
NEENAH WINNEBAGO CO. WI 08/20/2010 17:40 CST-6 Thunderstorm Wind 52 kts. EG 0 4 0.00K 0.00K
Totals: 0 4 208.00K 0.00K