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The Dexes / Lightning Report (Storm Events) / 386180

Eventdex · Lightning Report (Storm Events)

ROCK

386180 · 42.830, -89.070

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The record

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Event typeevent_typeLightning
NOAA NCEI event IDncei_event_id386,180
Episode IDepisode_id64,380
Begin UTCbegin_utc2012-05-29T00:25:00+00:00
End UTCend_utc2012-05-29T00:25:00+00:00
StatestateWISCONSIN
County/zone typecz_typeC
County/zone namecz_nameROCK
Latitudelat42.830
Longitudelon-89.070
End latitudeend_lat42.830
End longitudeend_lon-89.070
Deaths directdeaths_direct0
Deaths indirectdeaths_indirect0
Injuries directinjuries_direct0
Injuries indirectinjuries_indirect0
Damage propertydamage_property75.00K
Weather forecast office sourcewfo_sourceFire Department/Rescue
Episode narrativeepisode_narrativeThe 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 narrativeevent_narrativeFire officials say lightning ignited a fire that damaged a 21-unit senior living facility in Edgerton, displacing 30 residents.
Yearyear2,012

Provenance

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ROCK — Lightning Report (Storm Events) — TerraPulse