Storm Events Database

Event Details

Event Hail
Magnitude 1.25 in.
State WISCONSIN
County/Area OZAUKEE
WFO MKX
Begin Date 05/28/2012 17:59:00 CST-6
Begin Range 0
Begin Azimuth N
Begin Location CEDARBURG
Begin Lat/Lon 43.28/-87.98
End Date 05/28/2012 17:59:00 CST-6
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage
Crop Damage
Episode Narrative The Memorial Day holiday became turbulent during the late afternoon and evening hours as a line of severe thunderstorms ahead of a cold front crossed southern Wisconsin, producing damaging winds gusts and large hail up to 1.25 inches in diameter. An unstable air mass was in place, with high temperatures in the upper 80s to around 90, and dew points in the lower 60s, that produced mixed-layer CAPE values of 1000-1800 J/kg, with forcing along the front enhanced by weak upper level divergence and weak differential vorticity advection. While directional shear was minimal, with above-surface winds unidirectional from the west, there was sufficient speed shear to support organized updrafts, and for the individual cells to merge into bowing line segments. Numerous reports of downed trees and power lines were received, as well as some minor structural damage. There were also many large hail reports, mainly along and south of a line from northern Sauk County, near Reedsburg and the Wisconsin Dells, to northern Ozaukee County near Port Washington. Fire officials in Edgerton, in northeast Rock County, and in the city of Jackson in Washington County reported structural fires caused by lightning strikes.
Event Narrative A report from the public via Twitter stated 1.25 inch diameter hail fell in Cedarburg.


All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 420.00K 0.00K
REEDSBURG SAUK CO. WI 05/28/2012 14:44 CST-6 Hail 1.25 in. 0 0 0.00K 0.00K
WISCONSIN DELLS COLUMBIA CO. WI 05/28/2012 15:00 CST-6 Hail 1.25 in. 0 0 5.00K 0.00K
WISCONSIN DELLS COLUMBIA CO. WI 05/28/2012 15:04 CST-6 Thunderstorm Wind 65 kts. EG 0 0 30.00K 0.00K
BRIGGSVILLE MARQUETTE CO. WI 05/28/2012 15:15 CST-6 Thunderstorm Wind 74 kts. EG 0 0 20.00K 0.00K
BRIGGSVILLE MARQUETTE CO. WI 05/28/2012 15:20 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
MONTELLO MARQUETTE CO. WI 05/28/2012 15:36 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
MONTELLO MARQUETTE CO. WI 05/28/2012 15:36 CST-6 Thunderstorm Wind 65 kts. EG 0 0 20.00K 0.00K
MARQUETTE GREEN LAKE CO. WI 05/28/2012 15:50 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
MIDDLETON DANE CO. WI 05/28/2012 16:09 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
NEW GLARUS GREEN CO. WI 05/28/2012 16:10 CST-6 Thunderstorm Wind 74 kts. EG 0 0 30.00K 0.00K
DAYTON GREEN CO. WI 05/28/2012 16:15 CST-6 Thunderstorm Wind 74 kts. EG 0 0 30.00K 0.00K
DAYTON GREEN CO. WI 05/28/2012 16:15 CST-6 Thunderstorm Wind 70 kts. EG 0 0 10.00K 0.00K
MSN MOREY FLD ARPT DANE CO. WI 05/28/2012 16:15 CST-6 Thunderstorm Wind 50 kts. MG 0 0 2.00K 0.00K
OREGON DANE CO. WI 05/28/2012 16:27 CST-6 Thunderstorm Wind 56 kts. EG 0 0 5.00K 0.00K
COOKSVILLE ROCK CO. WI 05/28/2012 16:35 CST-6 Thunderstorm Wind 65 kts. EG 0 0 5.00K 0.00K
STOUGHTON DANE CO. WI 05/28/2012 16:38 CST-6 Hail 0.75 in. 0 0 0.00K 0.00K
EVANSVILLE ROCK CO. WI 05/28/2012 16:44 CST-6 Thunderstorm Wind 56 kts. EG 0 0 5.00K 0.00K
EVANSVILLE ROCK CO. WI 05/28/2012 16:50 CST-6 Hail 0.75 in. 0 0 0.00K 0.00K
MARQUETTE GREEN LAKE CO. WI 05/28/2012 16:50 CST-6 Thunderstorm Wind 56 kts. EG 0 0 5.00K 0.00K
STOUGHTON DANE CO. WI 05/28/2012 16:54 CST-6 Hail 1.00 in. 0 0 0.00K 0.00K
BRODHEAD GREEN CO. WI 05/28/2012 17:08 CST-6 Thunderstorm Wind 65 kts. EG 0 0 100.00K 0.00K
STONEBANK WAUKESHA CO. WI 05/28/2012 17:35 CST-6 Hail 0.88 in. 0 0 0.00K 0.00K
STONEBANK WAUKESHA CO. WI 05/28/2012 17:35 CST-6 Thunderstorm Wind 61 kts. EG 0 0 5.00K 0.00K
COLGATE WASHINGTON CO. WI 05/28/2012 17:37 CST-6 Thunderstorm Wind 61 kts. EG 0 0 10.00K 0.00K
GERMANTOWN WASHINGTON CO. WI 05/28/2012 17:45 CST-6 Thunderstorm Wind 56 kts. EG 0 0 10.00K 0.00K
PALMYRA JEFFERSON CO. WI 05/28/2012 17:50 CST-6 Thunderstorm Wind 52 kts. EG 0 0 3.00K 0.00K
CEDARBURG OZAUKEE CO. WI 05/28/2012 17:54 CST-6 Thunderstorm Wind 56 kts. EG 0 0 5.00K 0.00K
CEDARBURG OZAUKEE CO. WI 05/28/2012 17:59 CST-6 Hail 1.25 in. 0 0 0.00K 0.00K
DOWNTOWN WAUKESHA WAUKESHA CO. WI 05/28/2012 18:13 CST-6 Thunderstorm Wind 56 kts. EG 0 0 5.00K 0.00K
NEW BERLIN WAUKESHA CO. WI 05/28/2012 18:22 CST-6 Thunderstorm Wind 52 kts. EG 0 0 20.00K 0.00K
EDGERTON ROCK CO. WI 05/28/2012 18:25 CST-6 Lightning 0 0 75.00K 0.00K
CEDARBURG OZAUKEE CO. WI 05/28/2012 18:50 CST-6 Lightning 0 0 20.00K 0.00K
Totals: 0 0 420.00K 0.00K