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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 | 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 |
| DAYTON | GREEN CO. | WI | 05/28/2012 | 16:15 | CST-6 | Thunderstorm Wind | 74 kts. EG | 0 | 0 | 30.00K | 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 |
| MARQUETTE | GREEN LAKE CO. | WI | 05/28/2012 | 16:50 | 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 |
| 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 |
