A strong low pressure system tracking across the region during the afternoon and evening hours of May 17, 2017, generated three rounds of thunderstorms with damaging winds and hail. A small summary of impacts includes:
Below is the radar loop of the thunderstorms as they crossed the area. The loop contains the composite reflectivity from the regional radars spanning the period from 12:15 pm to 12:30 am with images every 15 minutes.
Collapsed barn near Tomahawk, WI in Lincoln County.
Power poles snapped in Marshfield. (Photo from Marshfield Police Dept.)
A map of the preliminary storm reports is shown below. A "W" indicates strong wind gusts or wind damage and "H" indicates hail.
Below is a preliminary summary of storm observations from spotters, law enforcement, and the public.
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GREEN BAY WI
251 AM CDT THU MAY 18 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0157 PM TSTM WND DMG MARSHFIELD 44.66N 90.16W
05/17/2017 WOOD WI TRAINED SPOTTER
POWER POLES SNAPPED AND SOME DAMAGE WAS REPORTED AT A
LOCAL BUSINESS NEARBY.
0159 PM TSTM WND GST MARSHFIELD 44.66N 90.16W
05/17/2017 M66.00 MPH WOOD WI ASOS
0205 PM TSTM WND GST ABBOTSFORD 44.95N 90.32W
05/17/2017 M50.00 MPH MARATHON WI BROADCAST MEDIA
FROM WAOW-TV
0242 PM TSTM WND GST WAUSAU 44.96N 89.63W
05/17/2017 M35.00 MPH MARATHON WI ASOS
DOWNTOWN AIRPORT.
0243 PM TSTM WND GST MERRILL 45.18N 89.68W
05/17/2017 M43.00 MPH LINCOLN WI AWOS
0249 PM TSTM WND GST TOMAHAWK 45.46N 89.73W
05/17/2017 M40.00 MPH LINCOLN WI AWOS
0308 PM TSTM WND DMG 20 W RHINELANDER 45.63N 89.82W
05/17/2017 ONEIDA WI LAW ENFORCEMENT
A COUPLE OF TREES DOWNS.
0309 PM TSTM WND GST RHINELANDER 45.63N 89.41W
05/17/2017 M59.00 MPH ONEIDA WI ASOS
0545 PM HEAVY RAIN 3 SSW WAUSAUKEE 45.32N 87.96W
05/17/2017 M2.36 INCH MARINETTE WI TRAINED SPOTTER
1 FOOT DIAMETER TREE DOWN.
0652 PM HAIL NEKOOSA 44.31N 89.88W
05/17/2017 M1.00 INCH WOOD WI TRAINED SPOTTER
0652 PM HAIL 4 S NEKOOSA 44.25N 89.88W
05/17/2017 M1.00 INCH WOOD WI TRAINED SPOTTER
0653 PM TSTM WND GST PORT EDWARDS 44.33N 89.84W
05/17/2017 M60.00 MPH WOOD WI PUBLIC
MEASURED WIND GUST. ALSO NOTED STOP LIGHTS WERE OUT.
0653 PM HAIL PORT EDWARDS 44.33N 89.84W
05/17/2017 M0.50 INCH WOOD WI PUBLIC
0700 PM HAIL 5 E WISCONSIN RAPIDS 44.40N 89.74W
05/17/2017 M0.75 INCH WOOD WI TRAINED SPOTTER
ALSO NOTED SEVERAL 1-2 INCH DIAMETER TREE BRANCHES DOWN
THROUGHOUT TOWN.
0707 PM TSTM WND DMG ATHENS 45.03N 90.08W
05/17/2017 MARATHON WI BROADCAST MEDIA
SEMI TIPPED OVER IN ATHENS AROUND 708 PM. TIME ESTIMATED
BASED ON RADAR.
0717 PM TSTM WND GST 4 SE MARATHON CITY 44.91N 89.78W
05/17/2017 M42.00 MPH MARATHON WI AMATEUR RADIO
MEASURED WIND GUST AT THE CORNERS OF HWY N AND O. ALSO
NOTED TORRENTIAL RAIN.
0720 PM TSTM WND GST MOSINEE 44.78N 89.69W
05/17/2017 E50.00 MPH MARATHON WI AMATEUR RADIO
ON HWY 135 NEAR THE AIRPORT. ALSO NOTED HEAVY RAIN.
0720 PM TSTM WND GST MOSINEE 44.78N 89.69W
05/17/2017 M49.00 MPH MARATHON WI AWOS
0720 PM HAIL PLOVER 44.45N 89.53W
05/17/2017 M0.25 INCH PORTAGE WI CO-OP OBSERVER
NOTED A MAX WIND GUST OF 37 MPH AND 0.18 INCHES OF RAIN
WITH THE MOST RECENT STORM.
0728 PM HAIL ROTHSCHILD 44.88N 89.61W
05/17/2017 M0.50 INCH MARATHON WI TRAINED SPOTTER
DIME SIZE HAIL AND WINDS ESTIMATED TO AROUND 50 MPH.
0728 PM HAIL 12 S ROTHSCHILD 44.71N 89.61W
05/17/2017 M0.50 INCH MARATHON WI TRAINED SPOTTER
DIME SIZE HAIL AND WINDS ESTIMATED AT 50 MPH.
0730 PM TSTM WND DMG 1 S MERRILL 45.17N 89.68W
05/17/2017 LINCOLN WI LAW ENFORCEMENT
SEVERAL TREES DOWN JUST SOUTH OF MERRILL.
0730 PM HAIL MOSINEE 44.78N 89.69W
05/17/2017 M0.50 INCH MARATHON WI AMATEUR RADIO
DIZE SIZE HAIL. WIND GUST ESTIMATED AROUND 50 MPH AT 725
PM.
0731 PM HAIL PLOVER 44.45N 89.53W
05/17/2017 E0.25 INCH PORTAGE WI TRAINED SPOTTER
ON THE INTERSECTION OF RIVER DRIVE AND GRANT AVE.
0733 PM HAIL SE WAUSAU 44.96N 89.63W
05/17/2017 M0.25 INCH MARATHON WI TRAINED SPOTTER
0736 PM TSTM WND DMG 2 E IRMA 45.34N 89.62W
05/17/2017 LINCOLN WI LAW ENFORCEMENT
TREES DOWN AT HIGHWAY 51 AND COUNTY J.
0740 PM TSTM WND DMG 2 ENE DOERING 45.24N 89.43W
05/17/2017 LINCOLN WI LAW ENFORCEMENT
TREES DOWN ON COUNTY ROAD X.
0757 PM HAIL E PLOVER 44.45N 89.53W
05/17/2017 M0.50 INCH PORTAGE WI LAW ENFORCEMENT
ON THE CORNER OF I-39 AND HWY 54 EAST OF PLOVER.
0758 PM TSTM WND GST ANTIGO 45.15N 89.15W
05/17/2017 E45.00 MPH LANGLADE WI TRAINED SPOTTER
WIND GUST ESTIMATED AT 45 MPH.
0802 PM HAIL MARSHFIELD 44.66N 90.16W
05/17/2017 E0.50 INCH WOOD WI LAW ENFORCEMENT
PEA TO DIME SIZE HAIL.
0804 PM TSTM WND DMG WOODBORO 45.59N 89.55W
05/17/2017 ONEIDA WI LAW ENFORCEMENT
TREES AND POWER LINES DOWN. TIME ESTIMATED BASED ON
RADAR.
0805 PM TSTM WND DMG ANTIGO 45.15N 89.15W
05/17/2017 LANGLADE WI LAW ENFORCEMENT
TREES DOWN IN THE CITY OF ANTIGO.
0812 PM TSTM WND DMG ELCHO 45.43N 89.18W
05/17/2017 LANGLADE WI LAW ENFORCEMENT
TREES DOWN IN ELCHO. TIME ESTIMATED BASED ON RADAR.
0816 PM TSTM WND DMG SUGAR CAMP 45.78N 89.30W
05/17/2017 ONEIDA WI LAW ENFORCEMENT
TREES AND POWER LINES DOWN.
0828 PM HAIL 4 E WAUPACA 44.34N 88.98W
05/17/2017 M1.00 INCH WAUPACA WI TRAINED SPOTTER
GUSTY WINDS AND HEAVY RAIN ALSO NOTED.
0834 PM TSTM WND DMG 1 NW BOULDER JUNCTION 46.12N 89.64W
05/17/2017 VILAS WI TRAINED SPOTTER
ABOUT 15 TO 20 INCH DIAMETER TREES DOWN ON ROADS. SOME
ROADS ARE BLOCKED BY THE TREES. TIME ESTIMATED BY RADAR.
0834 PM TSTM WND DMG 2 N BOULDER JUNCTION 46.14N 89.63W
05/17/2017 VILAS WI TRAINED SPOTTER
WINDS THAT TOOK OUT SMALL TO MEDIUM SIZED TREE LIMBS.
ALSO HEAVY RAIN.
0920 PM TSTM WND DMG S WAUTOMA 44.06N 89.28W
05/17/2017 WAUSHARA WI STORM CHASER
TREES SNAPPED AND UPROOTED. TOP OF TALL HEALTHY PINE TREE
SNAPPED OFF, 10 INCH DIAMETER TRUNK WAS SNAPPED.
0925 PM TSTM WND GST WAUTOMA 44.06N 89.28W
05/17/2017 M52.00 MPH WAUSHARA WI AWOS
0930 PM TSTM WND GST STEVENS POINT 44.51N 89.56W
05/17/2017 M35.00 MPH PORTAGE WI TRAINED SPOTTER
MEASURED 35 MPH SUSTAINED WINDS. CORNER OF HWY HH AND 51.
0930 PM TSTM WND GST PLOVER 44.45N 89.53W
05/17/2017 M41.00 MPH PORTAGE WI CO-OP OBSERVER
0937 PM TSTM WND DMG 2 S WAUPACA 44.31N 89.06W
05/17/2017 WAUPACA WI 911 CALL CENTER
TREES AND POWER LINES DOWN
0942 PM TSTM WND GST WAUPACA 44.34N 89.06W
05/17/2017 M49.00 MPH WAUPACA WI AWOS
0948 PM TSTM WND DMG MANAWA 44.46N 88.91W
05/17/2017 WAUPACA WI 911 CALL CENTER
TREES AND POWER LINES DOWN
0955 PM TSTM WND GST NEW LONDON 44.38N 88.75W
05/17/2017 M42.00 MPH WAUPACA WI MESONET
REPORT FROM WBAY WEATHERBUG SITE.
1000 PM TSTM WND DMG 3 N EUREKA 44.04N 88.84W
05/17/2017 WINNEBAGO WI TRAINED SPOTTER
ONE TREE DOWN EAST OF HWY K AND BANNER HILL ROAD. TIME
ESTIMATED.
1000 PM TSTM WND DMG SHIOCTON 44.43N 88.58W
05/17/2017 OUTAGAMIE WI 911 CALL CENTER
COUPLE REPORTS OF WIRES DOWN
1002 PM TSTM WND DMG CLINTONVILLE 44.61N 88.75W
05/17/2017 WAUPACA WI 911 CALL CENTER
TREES AND POWER LINES DOWN
1003 PM TSTM WND GST MARION 44.66N 88.88W
05/17/2017 E50.00 MPH WAUPACA WI TRAINED SPOTTER
1005 PM TSTM WND GST APPLETON 44.26N 88.40W
05/17/2017 M61.00 MPH OUTAGAMIE WI AWOS
1005 PM TSTM WND GST CLINTONVILLE 44.61N 88.75W
05/17/2017 E50.00 MPH WAUPACA WI TRAINED SPOTTER
ESTIMATED WIND GUST.
1008 PM TSTM WND GST S SHIOCTON 44.43N 88.58W
05/17/2017 M40.00 MPH OUTAGAMIE WI TRAINED SPOTTER
ALSO NOTICED POWER LINE FLASH TO THE SW SHORTLY BEFORE
MEASURING THE GUST.
1012 PM TSTM WND DMG NICHOLS 44.56N 88.46W
05/17/2017 OUTAGAMIE WI 911 CALL CENTER
COUPLE REPORTS OF WIRES DOWN
1015 PM TSTM WND DMG CHILTON 44.03N 88.16W
05/17/2017 CALUMET WI 911 CALL CENTER
TREES DOWN AND POWER OUTAGES
1018 PM TSTM WND DMG NEW HOLSTEIN 43.95N 88.08W
05/17/2017 CALUMET WI 911 CALL CENTER
TREES DOWN AND POWER OUTAGES
1018 PM TSTM WND GST NEW HOLSTEIN 43.95N 88.08W
05/17/2017 E53.00 MPH CALUMET WI MESONET
TIME ESTIMATED.
1019 PM TSTM WND GST CHILTON 44.03N 88.16W
05/17/2017 M53.00 MPH CALUMET WI MESONET
TIME ESTIMATED.
1020 PM TSTM WND DMG BRILLION 44.18N 88.06W
05/17/2017 CALUMET WI LAW ENFORCEMENT
TREES AND POWER LINES DOWN.
1020 PM TSTM WND DMG NEW HOLSTEIN 43.95N 88.08W
05/17/2017 CALUMET WI LAW ENFORCEMENT
TREES AND POWER LINES DOWN.
1021 PM TSTM WND GST KESHENA 44.88N 88.63W
05/17/2017 M52.00 MPH MENOMINEE WI BROADCAST MEDIA
TIME ESTIMATED BASED ON RADAR.
1029 PM TSTM WND GST GREEN BAY 44.51N 88.00W
05/17/2017 M55.00 MPH BROWN WI ASOS
1030 PM TSTM WND DMG GREEN BAY 44.51N 88.00W
05/17/2017 BROWN WI 911 CALL CENTER
ABOUT A DOZEN REPORTS OF TREES AND WIRES DOWN IN GREEN
BAY
1031 PM TSTM WND GST GREEN BAY 44.51N 88.00W
05/17/2017 M49.00 MPH BROWN WI MESONET
FROM WBAY MESONET. TIME ESTIMATED.
1045 PM TSTM WND GST DENMARK 44.34N 87.83W
05/17/2017 M44.00 MPH BROWN WI MESONET
REPORT FROM WBAY WEATHERBUG SITE.
1056 PM TSTM WND GST MANITOWOC 44.08N 87.66W
05/17/2017 M41.00 MPH MANITOWOC WI AWOS
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