Overview
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Multiple rounds of heavy rain moved through the southern half of Wisconsin during the first week in May, 2018. Wind driven hail occurred from Janesville to Genoa City on Wednesday evening, May 2nd. |
Caption |
Wind & Hail:
The main period for damaging winds and large hail was on Wednesday evening when a supercell thunderstorm tracked from Evansville, through Janesville and Williams Bay on through Genoa City. The largest reported hail was from Williams Bay where tennis ball sized hail fell. The worst damage was in Janesville where 60mph wind driven ping pong ball sized hail occurred.
Wind
Wind driven hail did damage to siding and windows in Janesville. 58mph wind gusts were measured at the Janesville airport with ping pong ball sized hail falling.![]() |
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| Janesville-Anna Mae Mlinar | Janesville-Shelby B | Janesville | Williams Bay-Maggie Trussler |
Hail
Wind driven hail hit Janesville with up to tennis ball sized hail occurring in Williams Bay.
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Williams Bay-Maggie Trussler |
Genoa City-Dalton Malecki | Twin Lakes-Audra Pedersen | Twin Lakes-Lynette Rullman |
Rainfall:
3 Day Rainfall Totals and Daily Rainfall Totals
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| 3 Day Storm Total Precipitation | Day 1 (Tuesday) Rainfall Amounts |
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| Day 2 (Wednesday) Rainfall Amounts | Day 3 (Thursday-Early Friday) Rainfall Amounts |
Storm Reports
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
133 PM CDT THU MAY 3 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 PM HAIL MINERAL POINT 42.86N 90.19W
05/02/2018 M1.00 INCH IOWA WI PUBLIC
PICTURE FROM SOCIAL MEDIA.
0713 PM HAIL BLUE MOUNDS 43.02N 89.82W
05/02/2018 E0.25 INCH DANE WI PUBLIC
0721 PM HAIL 3 SW JANESVILLE 42.66N 89.06W
05/02/2018 M1.50 INCH ROCK WI PUBLIC
BROKEN SIDING, WINDOWS AND TORN SCREENS.
CEDAR CREST AREA.
0732 PM HAIL 3 N VERONA 43.03N 89.53W
05/02/2018 M0.25 INCH DANE WI PUBLIC
0735 PM HAIL 1 W VERONA 42.99N 89.56W
05/02/2018 E0.25 INCH DANE WI PUBLIC
0755 PM HAIL EVANSVILLE 42.78N 89.30W
05/02/2018 E1.00 INCH ROCK WI PUBLIC
0810 PM HAIL 1 W WATERTOWN 43.19N 88.74W
05/02/2018 M0.75 INCH JEFFERSON WI PUBLIC
0818 PM HAIL ASHIPUN 43.21N 88.52W
05/02/2018 E1.00 INCH DODGE WI PUBLIC
BASED ON A PICTURE FROM SOCIAL MEDIA.
0822 PM HAIL 3 SW JANESVILLE 42.65N 89.05W
05/02/2018 M1.50 INCH ROCK WI PUBLIC
0824 PM HAIL 2 WSW OCONOMOWOC 43.09N 88.53W
05/02/2018 E1.25 INCH WAUKESHA WI PUBLIC
THE DURATION OF THE HAIL EVENT WAS 10
MINUTES.
0842 PM HAIL 2 SW WAUKESHA 42.99N 88.26W
05/02/2018 E1.00 INCH WAUKESHA WI TRAINED SPOTTER
EST 55 MPH WINDS.
0843 PM HAIL 3 S GERMANTOWN 43.20N 88.11W
05/02/2018 M0.75 INCH WASHINGTON WI PUBLIC
0846 PM HAIL DARIEN 42.61N 88.71W
05/02/2018 M1.00 INCH WALWORTH WI PUBLIC
0847 PM HAIL GRAFTON 43.32N 87.95W
05/02/2018 M0.25 INCH OZAUKEE WI TRAINED SPOTTER
WIND ESTIMATED AT 30-40MPH.
0851 PM HAIL FONTANA-ON-GENEVA 42.54N 88.57W
05/02/2018 E1.00 INCH WALWORTH WI PUBLIC
MPING.
0858 PM HAIL 1 WSW WILLIAMS BAY 42.57N 88.56W
05/02/2018 M2.50 INCH WALWORTH WI TRAINED SPOTTER
CORRECTS PREVIOUS HAIL REPORT FROM 1 WSW
WILLIAMS BAY. BROKEN WINDOW ON THE 90' DOME
AT YERKES OBSERVATORY IN WILLIAMS BAY.
0904 PM HAIL 2 WNW PELL LAKE 42.55N 88.40W
05/02/2018 M1.75 INCH WALWORTH WI TRAINED SPOTTER
0904 PM HAIL 5 WSW PELL LAKE 42.52N 88.44W
05/02/2018 E1.75 INCH WALWORTH WI PUBLIC
0910 PM HAIL 2 SSE PELL LAKE 42.52N 88.35W
05/02/2018 M1.50 INCH WALWORTH WI PUBLIC
0912 PM HAIL GENOA CITY 42.50N 88.32W
05/02/2018 M1.25 INCH WALWORTH WI PUBLIC
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