Two Rounds of Severe Storms Hit the Area

Overview

Two rounds of thunderstorms, some severe, affected the area from Thursday evening on July 6th through early Friday evening on July 7th, 2017. The first round Thursday evening into early Friday morning generated strong winds that resulted in damage over far northeast Wisconsin and Door county. Some large hail also occurred over central Wisconsin during this time. Hail slightly larger than a baseball was reported in Trempealeau (NWS La Crosse's area).

The second round produced large hail and some wind damage in east-central Wisconsin Friday afternoon and early Friday evening. The strongest storm affected western Manitowoc county, where golf ball-sized hail and a funnel cloud were reported.

Round 1 - Thursday Afternoon into Early Friday Morning

Below is a radar loop from approximately 6 pm Thursday to 1 am Friday morning.

Radar loop from Thursday July 6 to the early morning of Friday July 7, 2017

Below is a map and summary of Local Storm Reports from the Thursday evening storms.

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GREEN BAY WI
1056 AM CDT FRI JUL 07 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0530 PM     HAIL             WAUPACA                 44.34N 89.06W
07/06/2017  M1.50 INCH       WAUPACA            WI   FIRE DEPT/RESCUE

            SUBMITTED VIA INTERNET.

0535 PM     HAIL             NW WAUPACA              44.34N 89.06W
07/06/2017  M0.75 INCH       WAUPACA            WI   TRAINED SPOTTER

            MEASURED JUST NW OF THE CITY NEAR HIGHWAY 49.

0745 PM     TSTM WND GST     6 ESE FLORENCE          45.90N 88.13W
07/06/2017  M60.00 MPH       FLORENCE           WI   TRAINED SPOTTER

            SOME DEAD BRANCHES BLEW OFF TREES.

0745 PM     HAIL             6 ESE FLORENCE          45.90N 88.13W
07/06/2017  M0.88 INCH       FLORENCE           WI   TRAINED SPOTTER

0800 PM     HAIL             5 ESE HANCOCK           44.10N 89.42W
07/06/2017  E1.50 INCH       WAUSHARA           WI   STORM CHASER

            INTERSECTION OF COUNTY HIGHWAYS B AND C

0821 PM     HAIL             WAUTOMA                 44.06N 89.28W
07/06/2017  M0.25 INCH       WAUSHARA           WI   EMERGENCY MNGR

            PEA SIZED HAIL ON THE SW SIDE OF WAUTOMA.

0854 PM     TSTM WND GST     RHINELANDER             45.63N 89.41W
07/06/2017  M39.00 MPH       ONEIDA             WI   ASOS

0855 PM     TSTM WND GST     3 N RHINELANDER         45.67N 89.41W
07/06/2017  E35.00 MPH       ONEIDA             WI   TRAINED SPOTTER

            ALSO HEAVY RAIN IN NEWBOLD AREA.

0936 PM     TSTM WND DMG     W ELLISON BAY           45.25N 87.07W
07/06/2017                   DOOR               WI   EMERGENCY MNGR

            TREES DOWN ACROSS ROAD ON HIGHWAY 42 AND MINK RIVER RD.
            TIME ESTIMATED FROM RADAR.

0937 PM     TSTM WND DMG     EGG HARBOR              45.04N 87.28W
07/06/2017                   DOOR               WI   911 CALL CENTER

            TREES AND POWER LINES DOWN IN EGG HARBOR. TIME ESTIMATED
            FROM RADAR. OTHER SPORATIC TREES AND POWER LINES DOWN
            THROUGHOUT THE COUNTY.

0943 PM     TSTM WND DMG     JACKSONPORT             44.98N 87.18W
07/06/2017                   DOOR               WI   EMERGENCY MNGR

            TREES AND POWER LINES DOWN. TIME ESTIMATED FROM RADAR.

1037 PM     HAIL             CLINTONVILLE            44.61N 88.75W
07/06/2017  M0.25 INCH       WAUPACA            WI   PUBLIC

            BETWEEN PEA AND DIMED SIZE HAIL. ESTIMATED WINDS AROUND
            25 MPH.

1115 PM     TSTM WND GST     SEYMOUR                 44.51N 88.33W
07/06/2017  E60.00 MPH       OUTAGAMIE          WI   TRAINED SPOTTER

            ESTIMATED WIND GUST TO 60 MPH. TREE LIMBS AND BRANCHES
            DOWN. POWER OUTAGES CITYWIDY, APPROX. 3400 CUSTOMERS
            AFFECTED.

1135 PM     HAIL             KAUKAUNA                44.28N 88.27W
07/06/2017  M0.88 INCH       OUTAGAMIE          WI   TRAINED SPOTTER

            NICKEL TO POSSIBLY QUARTER SIZED HAIL. PHOTO RELAYED VIA
            EMAIL SHOWING VARIOUS SIZES.

1138 PM     HAIL             KAUKAUNA                44.28N 88.27W
07/06/2017  M0.75 INCH       OUTAGAMIE          WI   AMATEUR RADIO

            DIME TO NICKEL SIZED HAIL.

Round 2 - Friday Afternoon into early Friday Evening

Below is a radar loop from approximately 3:30 pm to 7:00 pm Friday. Note: Because the storms were relatively close to the Green Bay radar, the loop was generated using data collected with the radar antenna pointed slightly higher into the atmosphere than typical for radar imagery displays. This resulted in fewer non-meteorological returns being displayed.

Radar loop from Friday July 7, 2017

Below is a map and list of Local Storm Reports from the Friday storms.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
656 PM CDT FRI JUL 07 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0455 PM     TSTM WND DMG     E BRILLION              44.18N 88.06W
07/07/2017                   CALUMET            WI   LAW ENFORCEMENT

            POWERLINES DOWN.

0510 PM     HAIL             W REEDSVILLE            44.16N 87.96W
07/07/2017  M1.00 INCH       MANITOWOC          WI   PUBLIC

0512 PM     TSTM WND DMG     REEDSVILLE              44.16N 87.96W
07/07/2017                   MANITOWOC          WI   LAW ENFORCEMENT

            POWERLINES DOWN AND TREES UPROOTED IN CITY.

0521 PM     HAIL             2 W VALDERS             44.06N 87.92W
07/07/2017  M1.50 INCH       MANITOWOC          WI   PUBLIC

            WINDS GUSTING ALSO TO 60 MPH.

0527 PM     HAIL             ST NAZIANZ              44.00N 87.91W
07/07/2017  M1.75 INCH       MANITOWOC          WI   PUBLIC

            SOME CROP DAMAGE. LEAVES STRIPPED OFF MANY TREES IN TOWN.

0536 PM     HAIL             SCHOOL HILL             43.95N 87.90W
07/07/2017  M1.25 INCH       MANITOWOC          WI   BROADCAST MEDIA

            FOX 11.

0537 PM     FUNNEL CLOUD     10 NW CLEVELAND         44.01N 87.89W
07/07/2017                   MANITOWOC          WI   TRAINED SPOTTER

            TIME ESTIMATED. DELAYED REPORT.

0545 PM     HAIL             4 W CLEVELAND           43.91N 87.83W
07/07/2017  M1.75 INCH       MANITOWOC          WI   TRAINED SPOTTER

0545 PM     HAIL             SPRING VALLEY           43.93N 87.83W
07/07/2017  M1.75 INCH       MANITOWOC          WI   TRAINED SPOTTER

0549 PM     HAIL             2 S CLEVELAND           43.88N 87.75W
07/07/2017  M1.75 INCH       SHEBOYGAN          WI   PUBLIC

            VIA SOCIAL MEDIA

0643 PM     HEAVY RAIN       COMBINED LOCKS          44.27N 88.31W
07/07/2017  M1.60 INCH       OUTAGAMIE          WI   TRAINED SPOTTER

            RAIN FELL IN A LITTLE OVER AN HOUR.