A strong atmospheric river moving into northern California later today will bring a threat for moderate to heavy rainfall and flooding, gusty to high winds, and mountain snows for parts of the Northwest U.S. through Wednesday. Gusty winds and isolated showers are expected today in the Northeast U.S. behind a cold front. Wind Advisories have been issued. Read More >
Overview
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Two rounds of thunderstorms rolled through southern Wisconsin on Wednesday. The first round steadily marched across the area as a north-to-south oriented line from 1230 pm until 6 pm. There were a few storms embedded within the line that produced stronger wind gusts of 40 to 50 mph. In between the two rounds, one storm developed in southwest Wisconsin and tracked across Sauk County. That storm produced hail at least the size of quarters and damaging winds up to 70 mph. The second round of storms evolved from discrete supercells in northeast Iowa that congealed into a line and expanded into southwest Wisconsin during the mid evening. That line sagged southeast through the area and exited around 3 am.
The first round of storms produced damaging winds when it was back in southeast Minnesota and northeast Iowa Wednesday morning, but gradually weakened as it tracked across southern Wisconsin in the afternoon. After a break in the rain during the early evening, more humid and unstable air with better wind shear surged into the area and the environment became primed for severe storms. A tornado watch was issued for an area of northeast Iowa, southwest and south central Wisconsin, and northeast Illinois Wednesday evening. There were confirmed tornadoes in northeast Iowa in that favorable environment, and a few rotating storms made it into southern Wisconsin and produced heavy rain and a few damaging wind gusts. However, no tornadoes were confirmed in southern Wisconsin. |
 Radar Loop 745 AM 14 July 2021 to 600 AM 15 July 2021 |
Wind & Hail:
Wind
Sporadic wind damage occurred with the two rounds of storms that tracked across southern Wisconsin on Wednesday. There were many picturesque shelf clouds with the line of storms that moved through Wednesday afternoon.
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| Shelf Cloud Near Beaver Dam (photo credit: Charlie Bourdo) |
Wind Damage in Dekorra Township between Portage and Poynette on the Wisconsin River (photo credit: Andrea Christofferson) |
A large tree fell on a house in Baraboo. There were several reports of trees on houses in the Baraboo area. | Large tree branches fell on a garage in Beloit. There were several reports tree damage in southwest Beloit. |
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MKX radar loop zoomed into the storm that tracked through Baraboo in Sauk County Wednesday evening This storm produced damaging wind and large hail |
Hail
The storm that tracked through Sauk County Wednesday afternoon dropped hail at least the size of quarters in the North Freedom and Baraboo areas.
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| Quarter-size Hail in Baraboo at 5:28 PM |
Radar / Rainfall:
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Estimated Rainfall Totals for Southern Wisconsin Wednesday and Wednesday Night |
Storm Reports
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
224 PM CDT THU JUL 15 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0528 PM HAIL 1 NW BARABOO 43.48N 89.75W
07/14/2021 E1.00 INCH SAUK WI BROADCAST MEDIA
REPORT RELAYED VIA SOCIAL MEDIA. TIME
ESTIMATED VIA RADAR.
0530 PM TSTM WND DMG BARABOO 43.47N 89.74W
07/14/2021 SAUK WI 911 CALL CENTER
MULTIPLE REPORTS OF DOWNED TREES, LIMBS, AND
POWERLINES ACROSS BARABOO AND THE
SURROUNDING AREAS. TIME ESTIMATED BASED ON
RADAR.
0545 AM HEAVY RAIN 3 ESE BARABOO 43.46N 89.68W
07/15/2021 M2.28 INCH SAUK WI COCORAHS
COCORAHS STATION WI-SK-26 BARABOO 3.2 ESE.
0700 AM HEAVY RAIN 6 SE LAKE DELTON 43.54N 89.68W
07/15/2021 M2.20 INCH SAUK WI COCORAHS
COCORAHS STATION WI-SK-17 BARABOO 6.0 NNE.
1247 AM TSTM WND DMG BELOIT 42.52N 89.02W
07/15/2021 ROCK WI 911 CALL CENTER
MULTIPLE REPORTS OF TREES AND POWER LINES
DOWN IN THE BELOIT AREA. TIME ESTIMATED FROM
RADAR.
0505 AM HEAVY RAIN 1 NE BERLIN 43.98N 88.94W
07/15/2021 M3.83 INCH GREEN LAKE WI MESONET
MESONET STATION BERLN BERLIN.
0644 AM HEAVY RAIN 5 ESE BLANCHARDVILLE 42.79N 89.76W
07/15/2021 M1.14 INCH GREEN WI COCORAHS
COCORAHS STATION WI-GN-11 BLANCHARDVILLE 5.4
ESE.
0630 AM HEAVY RAIN 1 W BRODHEAD 42.62N 89.39W
07/15/2021 M1.54 INCH GREEN WI CO-OP OBSERVER
CO-OP OBSERVER STATION BROW3 BRODHEAD.
0641 AM HEAVY RAIN 2 ENE BELLEVILLE 42.87N 89.50W
07/15/2021 M1.02 INCH DANE WI MESONET
MESONET STATION BKNW3 BROOKLYN.
0700 AM HEAVY RAIN 4 NNW DUNDEE 43.71N 88.20W
07/15/2021 M1.61 INCH FOND DU LAC WI COCORAHS
COCORAHS STATION WI-DL-24 CAMPBELLSPORT 8.7
NNE.
0705 AM HEAVY RAIN 3 SW GERMANTOWN 43.20N 88.16W
07/15/2021 M1.27 INCH WASHINGTON WI MESONET
MESONET STATION FW6268 COLGATE.
0702 AM HEAVY RAIN 3 NNE RILEY 43.06N 89.60W
07/15/2021 M1.20 INCH DANE WI MESONET
MESONET STATION AS276 4 SE CROSS PLAINS.
0128 AM TSTM WND DMG 1 N DELAVAN 42.64N 88.63W
07/15/2021 WALWORTH WI TRAINED SPOTTER
MEDIUM SIZED TREE BRANCHES FALLEN AROUND
NEIGHBORHOOD.
0705 AM HEAVY RAIN 2 ENE DELAVAN LAKE 42.62N 88.58W
07/15/2021 M1.19 INCH WALWORTH WI MESONET
MESONET STATION FW8173 DELAVAN.
0655 AM HEAVY RAIN 3 N WEST BARABOO 43.52N 89.77W
07/15/2021 M2.02 INCH SAUK WI AWOS
AWOS STATION KDLL DELLS BARABOO.
0511 AM HEAVY RAIN 4 N DODGEVILLE 43.02N 90.14W
07/15/2021 M1.04 INCH IOWA WI MESONET
MESONET STATION DLEW3 DODGEVILLE.
0700 AM HEAVY RAIN 3 SSE EDGERTON 42.79N 89.06W
07/15/2021 M1.04 INCH ROCK WI MESONET
MESONET STATION EW5754 EDGERTON.
0557 AM HEAVY RAIN 3 ESE ROSENDALE 43.79N 88.62W
07/15/2021 M3.31 INCH FOND DU LAC WI COCORAHS
COCORAHS STATION WI-DL-18 ELDORADO 2.3 S.
0700 AM HEAVY RAIN 2 ESE FOND DU LAC 43.77N 88.41W
07/15/2021 M3.60 INCH FOND DU LAC WI COCORAHS
COCORAHS STATION WI-DL-17 FOND DU LAC 1.7 E.
0653 AM HEAVY RAIN 2 SW FOND DU LAC 43.77N 88.48W
07/15/2021 M2.37 INCH FOND DU LAC WI ASOS
ASOS STATION KFLD FOND DU LAC AIRPORT.
0700 AM HEAVY RAIN 5 SW FORT ATKINSON 42.87N 88.91W
07/15/2021 M1.00 INCH JEFFERSON WI COCORAHS
COCORAHS STATION WI-JF-18 FORT ATKINSON 5.4
SW.
0709 AM HEAVY RAIN GENOA CITY 42.50N 88.32W
07/15/2021 M1.06 INCH WALWORTH WI MESONET
MESONET STATION CW8307 GENOA CITY.
0333 PM TSTM WND GST 2 SE GERMANTOWN 43.22N 88.09W
07/14/2021 E45 MPH WASHINGTON WI TRAINED SPOTTER
TREES ARE BENDING AND POWER IS FLICKERING.
0700 AM HEAVY RAIN 1 E GREEN LAKE 43.84N 88.94W
07/15/2021 M2.77 INCH GREEN LAKE WI COCORAHS
COCORAHS STATION WI-GL-4 GREEN LAKE 0.8 E.
0630 AM HEAVY RAIN 4 NW KEKOSKEE 43.57N 88.61W
07/15/2021 M1.47 INCH DODGE WI MESONET
MESONET STATION MAYW3 HORICON.
0700 AM HEAVY RAIN HOWARDS GROVE 43.83N 87.83W
07/15/2021 M2.98 INCH SHEBOYGAN WI MESONET
MESONET STATION FW1977 HOWARDS GROVE.
0700 AM HEAVY RAIN 3 W JANESVILLE 42.68N 89.08W
07/15/2021 M1.25 INCH ROCK WI COCORAHS
COCORAHS STATION WI-RK-12 JANESVILLE 3.1 W.
0456 AM HEAVY RAIN 6 SW JANESVILLE 42.62N 89.09W
07/15/2021 M2.06 INCH ROCK WI COCORAHS
COCORAHS STATION WI-RK-18 JANESVILLE 6.0 SW.
0700 AM HEAVY RAIN 1 ENE LAKE GENEVA 42.59N 88.42W
07/15/2021 M1.15 INCH WALWORTH WI COCORAHS
COCORAHS STATION WI-WW-2 LAKE GENEVA 0.6
ENE.
0525 PM TSTM WND DMG 2 SSW LOGANVILLE 43.42N 90.05W
07/14/2021 SAUK WI 911 CALL CENTER
*** 1 INJ ***
REPORT OF ROOF DAMAGE TO A GARAGE ALONG WITH
TREES DOWN ON SPRING VALLEY RD. TIME
ESTIMATED VIA RADAR.
0700 AM HEAVY RAIN 1 SSW MIDDLETON 43.08N 89.52W
07/15/2021 M1.01 INCH DANE WI COCORAHS
COCORAHS STATION WI-DA-46 MADISON 6.4 W.
0615 AM HEAVY RAIN 3 N KEKOSKEE 43.57N 88.57W
07/15/2021 M1.15 INCH DODGE WI COCORAHS
COCORAHS STATION WI-DD-18 MAYVILLE 4.9 NNW.
0700 AM HEAVY RAIN 1 NNE GREENFIELD 42.98N 88.00W
07/15/2021 M1.02 INCH MILWAUKEE WI MESONET
MESONET STATION FW7576 MILWAUKEE.
1155 PM HEAVY RAIN 1 N GREENFIELD 42.98N 88.00W
07/14/2021 M1.25 INCH MILWAUKEE WI COCORAHS
COCORAHS STATION WI-MW-67 MILWAUKEE 6.0 SSW.
0706 AM HEAVY RAIN 1 NNE MONONA 43.06N 89.33W
07/15/2021 M1.20 INCH DANE WI MESONET
MESONET STATION FW3620 MONONA.
0655 AM HEAVY RAIN 3 ENE MONROE 42.62N 89.60W
07/15/2021 M1.17 INCH GREEN WI AWOS
AWOS STATION KEFT MONROE.
0515 AM HEAVY RAIN 2 WSW MOUNT CALVARY 43.82N 88.28W
07/15/2021 M4.45 INCH FOND DU LAC WI COCORAHS
COCORAHS STATION WI-DL-5 MOUNT CALVARY 1.6
WSW.
0705 AM HEAVY RAIN 1 W MUSKEGO 42.89N 88.14W
07/15/2021 M1.05 INCH WAUKESHA WI MESONET
MESONET STATION AR976 MUSKEGO.
0500 AM HEAVY RAIN 4 NW PRINCETON 43.90N 89.18W
07/15/2021 M2.92 INCH MARQUETTE WI COCORAHS
COCORAHS STATION WI-MQ-5 NESHKORO 5.0 SSE.
0700 AM HEAVY RAIN 1 ESE NEW BERLIN 42.97N 88.12W
07/15/2021 M1.00 INCH WAUKESHA WI COCORAHS
COCORAHS STATION WI-WK-35 NEW BERLIN 0.6
ESE.
0522 PM TSTM WND DMG NORTH FREEDOM 43.46N 89.86W
07/14/2021 SAUK WI BROADCAST MEDIA
MULTIPLE TREES DOWN IN NORTH FREEDOM. TIME
ESTIMATED VIA RADAR.
0514 AM HEAVY RAIN 2 N PARDEEVILLE 43.56N 89.31W
07/15/2021 M1.97 INCH COLUMBIA WI MESONET
MESONET STATION PEEW3 PARDEEVILLE.
0608 AM HEAVY RAIN 1 ESE PELL LAKE 42.53N 88.33W
07/15/2021 M1.26 INCH WALWORTH WI CO-OP OBSERVER
CO-OP OBSERVER STATION PLLW3 1.4 E PELL
LAKE.
0700 AM HEAVY RAIN 4 WSW HOWARDS GROVE 43.81N 87.91W
07/15/2021 M2.47 INCH SHEBOYGAN WI COCORAHS
COCORAHS STATION WI-SB-18 PLYMOUTH 5.4 NE.
0545 PM TSTM WND DMG 6 SW PORTAGE 43.48N 89.54W
07/14/2021 COLUMBIA WI 911 CALL CENTER
REPORTS OF DOWNED TREES AND LIMBS AROUND THE
CALEDONIA AREA IN COLUMBIA COUNTY. TIME
ESTIMATED VIA RADAR.
0600 AM HEAVY RAIN 6 WSW PORTAGE 43.51N 89.57W
07/15/2021 M2.10 INCH COLUMBIA WI COCORAHS
COCORAHS STATION WI-CB-4 PORTAGE 5.7 WSW.
0700 AM HEAVY RAIN 7 SW PORTAGE 43.48N 89.57W
07/15/2021 M2.17 INCH COLUMBIA WI COCORAHS
COCORAHS STATION WI-CB-5 PORTAGE 7.2 SW.
0555 PM TSTM WND DMG 1 NE POYNETTE 43.40N 89.40W
07/14/2021 COLUMBIA WI 911 CALL CENTER
REPORTS OF DOWNED TREES AND LIMBS AROUND THE
POYNETTE AREA. TIME ESTIMATED VIA RADAR.
0525 AM HEAVY RAIN 1 N REEDSBURG 43.55N 90.00W
07/15/2021 M2.74 INCH SAUK WI COCORAHS
COCORAHS STATION WI-SK-15 REEDSBURG 1.3 N.
0706 AM HEAVY RAIN 1 SW RIPON 43.84N 88.85W
07/15/2021 E2.75 INCH FOND DU LAC WI PUBLIC
0700 AM HEAVY RAIN 2 NW ROCK SPRINGS 43.50N 89.94W
07/15/2021 M2.43 INCH SAUK WI COCORAHS
COCORAHS STATION WI-SK-24 ROCK SPRINGS 1.6
NW.
0700 AM HEAVY RAIN 3 WSW ROCK SPRINGS 43.46N 89.97W
07/15/2021 M1.97 INCH SAUK WI COCORAHS
COCORAHS STATION WI-SK-2 ROCK SPRINGS 2.8
WSW.
0600 AM HEAVY RAIN 1 W SHEBOYGAN 43.75N 87.72W
07/15/2021 M1.53 INCH LMZ643 WI COCORAHS
COCORAHS STATION WI-SB-27 SHEBOYGAN 0.6 NNE.
0700 AM HEAVY RAIN 3 N KOHLER 43.78N 87.77W
07/15/2021 M3.25 INCH SHEBOYGAN WI COCORAHS
COCORAHS STATION WI-SB-12 SHEBOYGAN 3.2 NW.
0700 AM HEAVY RAIN 3 SSE KOHLER 43.70N 87.75W
07/15/2021 M1.21 INCH SHEBOYGAN WI COCORAHS
COCORAHS STATION WI-SB-31 SHEBOYGAN 3.3 SSW.
0653 AM HEAVY RAIN 3 SSW HOWARDS GROVE 43.78N 87.85W
07/15/2021 M3.04 INCH SHEBOYGAN WI ASOS
ASOS STATION KSBM SHEBOYGAN-AIRPORT.
0652 AM HEAVY RAIN 6 N SHIRLAND 42.53N 89.21W
07/15/2021 M2.32 INCH ROCK WI PUBLIC
0504 AM HEAVY RAIN SHOREWOOD 43.09N 87.88W
07/15/2021 M1.43 INCH MILWAUKEE WI MESONET
MESONET STATION SORWD SHOREWOOD.
1200 AM HEAVY RAIN 2 ESE SOUTH BYRON 43.63N 88.45W
07/15/2021 M2.13 INCH FOND DU LAC WI CO-OP OBSERVER
CO-OP OBSERVER STATION FDCW3 1.8 E SOUTH
BYRON.
0600 AM HEAVY RAIN 4 SSW SOUTH WAYNE 42.51N 89.90W
07/15/2021 M1.58 INCH LAFAYETTE WI COCORAHS
COCORAHS STATION WI-LF-6 SOUTH WAYNE 3.9
SSW.
0610 AM HEAVY RAIN ST. PETER 43.83N 88.35W
07/15/2021 M4.30 INCH FOND DU LAC WI CO-OP OBSERVER
CO-OP OBSERVER STATION TAHW3 ST. PETER.
0706 AM HEAVY RAIN 2 ESE MAPLE BLUFF 43.10N 89.33W
07/15/2021 M1.14 INCH DANE WI MESONET
MESONET STATION EW4463 SUN PRAIRIE.
0700 AM HEAVY RAIN THERESA 43.52N 88.45W
07/15/2021 M1.14 INCH DODGE WI COCORAHS
COCORAHS STATION WI-DD-14 THERESA 0.1 ESE.
0700 AM HEAVY RAIN THERESA 43.51N 88.46W
07/15/2021 M1.18 INCH DODGE WI COCORAHS
COCORAHS STATION WI-DD-6 THERESA 0.5 SSW.
0700 AM HEAVY RAIN 6 WNW LA VALLE 43.63N 90.24W
07/15/2021 M2.02 INCH SAUK WI COCORAHS
COCORAHS STATION WI-SK-25 WONEWOC 2.0 SSW.
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