Thunderstorms and heavy rainfall may produce isolated flash flooding along the southeast Atlantic coast the next several days. Showers and thunderstorms persist across portions of the Great Basin, Pacific Northwest, and northern Rockies. Unseasonably hot temperatures continue for much of the Plains and Midwest. High surf, dangerous rip currents, and coastal flooding continue along the East Coast. Read More >
Overview
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A cold front moved it's way south across Wisconsin on Tuesday with storms developing quickly over north-central Wisconsin shortly after sunrise. These storms quickly became severe in the NWS Green Bay forecast area. Large hail was reported in the Appleton area with hail approaching 4 inches in diameter. Storms continued south to southeast along the front and hail of 2 to 3 inches was reported in Fond du Lac. Additional storms developed along the southern flank of the front near Madison and produced hail around 1 inch. These southern storms continued to strengthen and hail closer to 2 inches was reported in Rock and Walworth counties. While the storms were very strong there was enough of a stable layer near the surface to prevent strong wind gusts from these storms from reaching the surface. These storms did produce very frequent and intense lightning and a couple of houses were struck and caught fire from the lightning strikes. |
 Large Hail up to 3" in Fond du Lac from Betsy Spaeth |
Radar
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| Radar loop of storms as they moved across central and southern Wisconsin Tuesday morning into the early afternoon hours. |
Hail Photos
Hail ranged from pea size for most locations all the way up to Teacup size hail which is around 3 inches. The largest hail stones were reported in Fond du Lac.
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| 3" hail in Fond du Lac from Betsy Spaeth | 2" to 2.75" hail in Fond du Lac from Betsy Spaeth | Golfball Hail Fond du Lac from DDeumer via Twitter | Golfball Hail Ripon from SarahS relayed from WKOW27 |
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| Half Dollar hail in Fond du Lac from Jason Michael | Ping Pong Ball hail in Cleveland from Sara Tremblay | Ping Pong Ball hail in Delavan from Bridgett Zerbach | Ping Pong Ball hail in Delavan from Jeff Coblentz |
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| Ping Pong Ball hail in Delavan from Tom Russ | Ping Pong Ball hail in Doylestown from Bonnie Langsdorf | Ping Pong Ball hail in Fond du Lac from Sharky Berenz | Quarter size hail in Juneau from Ashley Rabehl |
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| Quarter size hail in Lake Geneva from Melissa McKay | Quarter size hail in Mazomanie from Anita Robinson | Quarter size hail in Town of Geneva from Kelly Herwald | Quarter size hail in Edgerton from Abby Mazuk relayed from WKOW27 |
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| Penny size hail in Lake Geneva from Sara Wahlstedt | Quarter size hail in Milton from Michael Gouvin | Quarter size hail in Kristin Behring relayed from NBC15 | Quarter size hail in Westfield from Dana Rae Neufeld relayed from WKOW |
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| Golfball hail in Delavan from David Eucker relayed from TMJ4 | 1.5" hail in Delavan from Meg Syves | 1.25" hail in Delavan from Josh Schmirler | Ping Pong ball size hail in Ripon from Kimberly Young |
Storm Reports
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| Link to Map of storm reports |
000 NWUS53 KMKX 072035 LSRMKX PRELIMINARY LOCAL STORM REPORT...SUMMARY NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 335 PM CDT TUE SEP 7 2021 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 1045 AM HAIL 1 N KEWASKUM 43.53N 88.23W 09/07/2021 E1.00 INCH WASHINGTON WI PUBLIC 1122 AM HAIL ALLENTON 43.42N 88.33W 09/07/2021 M1.00 INCH WASHINGTON WI LAW ENFORCEMENT SHERIFFS OFFICE REPORTED QUARTER SIZE HAIL IN ALLENTON. 1232 PM HAIL DELAVAN 42.63N 88.63W 09/07/2021 E1.25 INCH WALWORTH WI TRAINED SPOTTER CORRECTS PREVIOUS HAIL REPORT FROM DELAVAN. 1.0 TO 1.25 INCH HAIL REPORTED BY TRAINED SPOTTER. 1233 PM HAIL 1 N DELAVAN 42.64N 88.63W 09/07/2021 M1.50 INCH WALWORTH WI PUBLIC MULTIPLE REPORTS OF 1.0 TO 1.5 INCH HAIL REPORTED AROUND DELAVAN WI. 1242 PM HAIL ELKHORN 42.67N 88.54W 09/07/2021 E1.00 INCH WALWORTH WI PUBLIC 1244 PM HAIL WILLIAMS BAY 42.58N 88.54W 09/07/2021 M1.50 INCH WALWORTH WI PUBLIC PENNY SIZE TO PING PONG BALL SIZE. TIME ESTIMATED FROM RADAR. 1244 PM HAIL 1 NNE COMO 42.62N 88.49W 09/07/2021 E1.00 INCH WALWORTH WI PUBLIC 1246 PM HAIL 1 S COMO 42.59N 88.49W 09/07/2021 E1.00 INCH WALWORTH WI PUBLIC 1248 PM HAIL 1 NNW WALWORTH 42.54N 88.60W 09/07/2021 E1.00 INCH WALWORTH WI PUBLIC 1112 AM HAIL 2 N KOHLER 43.76N 87.78W 09/07/2021 E1.00 INCH SHEBOYGAN WI PUBLIC 1135 AM HAIL EDGERTON 42.84N 89.06W 09/07/2021 M1.00 INCH ROCK WI PUBLIC 1152 AM HAIL MILTON 42.77N 88.96W 09/07/2021 U1.00 INCH ROCK WI PUBLIC REPORT FROM MPING: QUARTER (1.00 IN.). 1235 PM HAIL 4 WSW CLINTON 42.54N 88.93W 09/07/2021 M1.00 INCH ROCK WI PUBLIC 0847 AM HAIL WESTFIELD 43.89N 89.49W 09/07/2021 E1.00 INCH MARQUETTE WI PUBLIC TIME ESTIMATED FROM RADAR. 1124 AM HAIL 2 WSW WATERTOWN 43.18N 88.75W 09/07/2021 E1.00 INCH JEFFERSON WI PUBLIC 0918 AM HAIL BERLIN 43.97N 88.95W 09/07/2021 M1.00 INCH GREEN LAKE WI LAW ENFORCEMENT 1024 AM HAIL MARKESAN 43.71N 88.99W 09/07/2021 E1.00 INCH GREEN LAKE WI PUBLIC PENNY TO QUARTER SIZE HAIL. 0943 AM HAIL RIPON 43.85N 88.84W 09/07/2021 E2.00 INCH FOND DU LAC WI PUBLIC REPORTS OF 3/4 INCH UP TO 2 INCH HAIL. 1010 AM HAIL 2 NNE NORTH FOND DU LAC 43.84N 88.47W 09/07/2021 M3.00 INCH FOND DU LAC WI PUBLIC IMAGE SHARED WITH US ON SOCIAL MEDIA. 1024 AM HAIL 2 SSE ALTO 43.65N 88.77W 09/07/2021 M0.88 INCH FOND DU LAC WI PUBLIC 1037 AM HAIL FOND DU LAC 43.78N 88.45W 09/07/2021 M0.88 INCH FOND DU LAC WI PUBLIC 1039 AM HAIL 3 S FOND DU LAC 43.74N 88.45W 09/07/2021 E1.50 INCH FOND DU LAC WI TRAINED SPOTTER SPOTTER REPORTED PING PONG BALL SIZE HAIL NEAR THE INTERSECTION OF. 1042 AM HAIL 2 SSE FOND DU LAC 43.75N 88.43W 09/07/2021 M1.00 INCH FOND DU LAC WI PUBLIC 1045 AM HAIL FOND DU LAC 43.78N 88.45W 09/07/2021 E1.75 INCH FOND DU LAC WI PUBLIC 1056 AM HEAVY RAIN 2 ESE FOND DU LAC 43.77N 88.41W 09/07/2021 M0.80 INCH FOND DU LAC WI PUBLIC 0.8 INCHES OF RAIN REPORTED OVER HALF HOUR DURATION IN EASTERN FOND DU LAC. 1107 AM HAIL JUNEAU 43.41N 88.70W 09/07/2021 M1.00 INCH DODGE WI LAW ENFORCEMENT NICKEL TO QUARTER SIZE HAIL. 1030 AM HAIL MAZOMANIE 43.17N 89.80W 09/07/2021 M1.00 INCH DANE WI PUBLIC REPORT OF QUARTER SIZE HAIL FROM MAZOMANIE. TIME ESTIMATED FROM RADAR. 1051 AM HAIL 4 NNE CROSS PLAINS 43.17N 89.62W 09/07/2021 E1.00 INCH DANE WI PUBLIC 1055 AM HAIL 1 ESE MIDDLETON 43.10N 89.49W 09/07/2021 E1.00 INCH DANE WI PUBLIC 1055 AM HAIL 1 NNW WAUNAKEE 43.21N 89.46W 09/07/2021 M0.88 INCH DANE WI PUBLIC 1057 AM HAIL 1 NNE VERONA 43.00N 89.53W 09/07/2021 M1.00 INCH DANE WI PUBLIC 1058 AM HAIL 2 W VERONA 42.99N 89.57W 09/07/2021 E1.50 INCH DANE WI PUBLIC 1108 AM HAIL MCFARLAND 43.02N 89.29W 09/07/2021 M1.00 INCH DANE WI BROADCAST MEDIA TIME ESTIMATED FROM RADAR. 1110 AM HAIL FITCHBURG 42.99N 89.43W 09/07/2021 M1.00 INCH DANE WI PUBLIC 1122 AM HAIL STOUGHTON 42.92N 89.23W 09/07/2021 M1.00 INCH DANE WI TRAINED SPOTTER SPOTTER REPORTED QUARTER SIZE HAIL IN STOUGHTON. 1038 AM HAIL DOYLESTOWN 43.43N 89.15W 09/07/2021 M1.50 INCH COLUMBIA WI PUBLIC TIME ESTIMATED FROM RADAR. && $$
Rain Reports
Map of rainfall reports from Co-op, CoCoRaHS, and airport observations.
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| Event total rainfall |
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