Showers and thunderstorms are expected across the southern and eastern US this week, with heavy rain and localized flooding, particularly near the Gulf Coast. Monsoonal moisture will bring rain and potential flooding to parts of the Southwest. Heat and fire weather threats will continue to impact the West. Read More >
Overview
Isolated thunderstorms developed along a lake breeze and surface trough in eastern Wisconsin during the late afternoon of June 5, 2019. One storm became severe and produced hail up to tennis ball-size around Stephensville in Outagamie County. Wind gusts over 40 mph were also reported.
Hail
The atmosphere became moderately unstable as morning clouds dissipated. Wind shear was sufficient to produce rotating thunderstorms. One of those became a supercell and produced hail up to 2.5 inches in diameter.
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| Hail near Shiocton. Picture from Christopher Ashline. | Hail near Shiocton. Picture from @ZiggysTweeting. | Hail near Stephensville. Picture from Colton West. | Hail near Stephensville. Picture from CJ Montour. | Hail near Stephensville. Picture from Kelly Ashauer, courtesy WLUK-TV. |
Radar
Images from NWS Green Bay radar (KGRB). Click any image for larger view. |
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| Radar cross-section at 5:38 pm. Note the "bounded weak echo region" indicating a strong updraft with high reflectivity (very large hail) aloft. | Radar reflectivity (0.5 deg). | Radar reflectivity (8.0 deg). Note the large "hail spike" (technically known as a three-body scatter spike) around 5:30 pm. |
Storm Reports
Preliminary list of storm reports.
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0518 PM HAIL 7 N SHIOCTON 44.53N 88.58W
06/05/2019 M0.75 INCH OUTAGAMIE WI TRAINED SPOTTER
0524 PM HAIL 3 N SHIOCTON 44.47N 88.58W
06/05/2019 M0.75 INCH OUTAGAMIE WI TRAINED SPOTTER
0538 PM HAIL SHIOCTON 44.43N 88.58W
06/05/2019 M1.00 INCH OUTAGAMIE WI PUBLIC
0541 PM HAIL 2 N STEPHENSVILLE 44.39N 88.58W
06/05/2019 M1.00 INCH OUTAGAMIE WI TRAINED SPOTTER
0553 PM HAIL 2 S SHIOCTON 44.40N 88.58W
06/05/2019 M1.50 INCH OUTAGAMIE WI PUBLIC
FROM SOCIAL MEDIA
0553 PM HAIL STEPHENSVILLE 44.36N 88.58W
06/05/2019 E2.50 INCH OUTAGAMIE WI PUBLIC
DELAYED REPORT FROM SOCIAL MEDIA. TIME ESTIMATED BY
RADAR.
0557 PM HAIL 3 SE STEPHENSVILLE 44.33N 88.54W
06/05/2019 E2.50 INCH OUTAGAMIE WI PUBLIC
DELAYED REPORT FROM SOCIAL MEDIA. TIME ESTIMATED BY
RADAR.
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