La Crosse, WI

Weather Forecast Office

Preliminary Storm Summary For Aug 7th, 2021

Overview

Widespread thunderstorms moved across the region on Saturday, August 7th 2021.

Storms were very efficient rainfall producers, including rainfall rates in excess of 2" per hour at times. A swath of 4 to 6 inches fell from near Winona, MN east southeast across La Crosse, southeast Monroe and northern Vernon counties in Wisconsin. This resulted in widespread flooding, especially in the city of La Crosse where street flooding stranded numerous vehicles. An additional band of 3 to 5 inches came a few hours later, running from southern Clark to across Adams and Juneau counties in central Wisconsin. Some locations received record rainfall for the day, with even some record 2-3 day totals.

In southwest Wisconsin, a strong tornado (EF-3) touched down near Boscobel, destroying or damaging several houses and outbuildings as it tracked east for just over 10 miles. The tornado lasted for 27 minutes and started near the southern edge of Boscobel. No injuries were reported.

INTERACTIVE STORY MAP OF THIS EVENT

Radar loop from 1 to 7 p.m. August 7, 2021

Tornado
Flooding
Photos
Radar
Storm Reports
Rainfall

Tornado:

Tornado - Boscobel, WI
GRANT COUNTY

Date	August 7, 2021
Time (Local)	4:29-4:56 p.m.
EF Rating	EF-3
Est. Peak Winds	160 mph
Path Length	10.6 miles
Max Width	1100 yds
Injuries/Deaths	0 / 0
Summary: A tornado damaged homes, buildings, and trees near Boscobel, WI in Grant County. Survey is still being finalized but most extreme damage was to part of a home about 3 miles east-southeast of Boscobel. Info. is preliminary and will be updated as more information becomes available.

Track Map

Downloadable KMZ File

The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:

EF0 Weak 65-85 mph	EF1 Moderate 86-110 mph	EF2 Significant 111-135 mph	EF3 Severe 136-165 mph	EF4 Extreme 166-200 mph	EF5 Catastrophic 200+ mph

Flooding

Heavy rainfall resulted in significant street flooding, mudslides, and rises on some rivers and streams. Especially hard hit was the Kickapoo river.

Hydrographs


Black River at Black River Falls, WI	La Crosse River at La Crosse, WI	Kickapoo River at La Farge, WI	Kickapoo River at Readstown, WI

Photos


Flooding on Cass St, La Crosse, WI [credit: Stacy Simon]	Flooding on Cass St, La Crosse, WI [credit: Stacy Simon]	Flooding on Cass St, La Crosse, WI [credit: Stacy Simon]	Timber Coulee [B Larson - Vernon Co EM:]

Photos:

NWS damage survey from Boscobel, WI area:


Damaged home east-southeast of Boscobel, WI (NWS Survey)	Damaged home east-southeast of Boscobel, WI (NWS Survey)	Damaged home east-southeast of Boscobel, WI (NWS Survey)	Damaged home east-southeast of Boscobel, WI (NWS Survey)

Damaged home east-southeast of Boscobel, WI (NWS Survey)	Damaged home east-southeast of Boscobel, WI (NWS Survey)	Damaged home east-southeast of Boscobel, WI (NWS Survey)	Damaged home east-southeast of Boscobel, WI (NWS Survey)

Street Flooding:


Street flooding in Onalaska, WI (Courtesy of Bill Anderson)	Street flooding in La Crosse, WI (Courtesy of Lauren Gourley)

Radar:


KARX radar 4:29pm	KARX radar 4:37pm	KARX radar 4:40pm	KARX radar 4:43pm

Storm Reports

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

1045 AM Hail 5 E Douglas 44.10N 92.48W
08/07/2021 E1.00 inch Olmsted MN Emergency Mngr

Short period of quarter sized hail on the
far north side of Rochester.

1052 AM Hail 5 E Douglas 44.10N 92.47W
08/07/2021 U0.75 inch Olmsted MN Public

Report from mPING: Dime (0.75 in.).

1131 AM Hail 5 NW Eastman 43.23N 91.05W
08/07/2021 U0.75 inch Crawford WI Public

Report from mPING: Dime (0.75 in.).

0127 PM Flood 2 SE Goodview 44.04N 91.69W
08/07/2021 Winona MN Public

Report from mPING: River/Creek overflowing;
Cropland/Yard/Basement Flooding.

0135 PM Flood Goodview 44.07N 91.71W
08/07/2021 Winona MN Emergency Mngr

Street flooding occurring in Goodview and
the west side of Winona.

0149 PM Hail Yuba 43.54N 90.43W
08/07/2021 E1.00 inch Richland WI Public

Public report photo via WKBT.

0213 PM Hail 1 W Holmen 43.96N 91.28W
08/07/2021 U0.75 inch La Crosse WI Public

Report from mPING: Dime (0.75 in.).

0216 PM Hail 4 NNE New Amsterdam 44.03N 91.29W
08/07/2021 E0.88 inch La Crosse WI NWS Employee

Strong winds with branches down.

0219 PM Hail 2 N Onalaska 43.91N 91.22W
08/07/2021 U1.00 inch La Crosse WI Public

Report from mPING: Quarter (1.00 in.).

0219 PM Hail 1 NW Onalaska 43.90N 91.23W
08/07/2021 U0.75 inch La Crosse WI Public

Report from mPING: Dime (0.75 in.).

0225 PM Tstm Wnd Gst 2 E Onalaska 43.89N 91.18W
08/07/2021 M48 MPH La Crosse WI NWS Employee

0228 PM Hail 2 SE Goodview 44.04N 91.69W
08/07/2021 U1.00 inch Winona MN Public

Report from mPING: Quarter (1.00 in.).

0229 PM Tstm Wnd Dmg 4 ENE Holmen 43.98N 91.19W
08/07/2021 La Crosse WI Public

0229 PM Hail 4 E Holmen 43.98N 91.19W
08/07/2021 E1.25 inch La Crosse WI Public

0236 PM Flash Flood 4 SSE La Crosse 43.77N 91.22W
08/07/2021 La Crosse WI Public

Report from mPING: Street/road flooding;
Street/road closed; Vehicles stranded.

0238 PM Hail 3 E Onalaska 43.89N 91.16W
08/07/2021 E0.88 inch La Crosse WI Public

Nickel sized hail near the landfill.

0243 PM Flood Nodine 43.91N 91.44W
08/07/2021 Winona MN Public

Report from mPING: River/Creek overflowing;
Cropland/Yard/Basement Flooding.

0306 PM Flash Flood 1 SSE Onalaska 43.88N 91.21W
08/07/2021 La Crosse WI Public

Report from mPING: Street/road flooding;
Street/road closed; Vehicles stranded.

0328 PM Flash Flood 1 SSW La Crosse 43.81N 91.24W
08/07/2021 La Crosse WI Public

Report from mPING: Street/road flooding;
Street/road closed; Vehicles stranded.

0338 PM Hail Ontario 43.72N 90.59W
08/07/2021 M0.75 inch Vernon WI Public

Relayed by dispatch.

0339 PM Hail 4 SE Cashton 43.71N 90.72W
08/07/2021 E0.88 inch Vernon WI Law Enforcement

0345 PM Flash Flood 4 SE La Crosse 43.80N 91.18W
08/07/2021 La Crosse WI Law Enforcement

Mudslide/washout along State Highway 33 at
the bottom of Irish Hill.

0345 PM Flash Flood 5 SSE La Crosse 43.75N 91.20W
08/07/2021 La Crosse WI Law Enforcement

Boulders in the road at the Highway 14/61
split on the very south side of La Crosse.

0350 PM Flash Flood 3 S Saint Joseph 43.74N 91.05W
08/07/2021 La Crosse WI Public

Portions of County Highway NN washed out per
Facebook post. Time estimated.

0400 PM Flash Flood 1 NNE Melvina 43.82N 90.77W
08/07/2021 Monroe WI Law Enforcement

Reports of water and debris across State
Highway 27 near Melvina.

0400 PM Flash Flood 3 WNW Melvina 43.82N 90.82W
08/07/2021 Monroe WI Law Enforcement

Mudslide with rocks across County Highway X.

0400 PM Flash Flood 5 NNW Melvina 43.86N 90.83W
08/07/2021 Monroe WI Law Enforcement

Water over both lanes of County Highway J
just west of State Highway 27.

0422 PM Hail 4 SSW Clayton 43.33N 90.74W
08/07/2021 E0.88 inch Crawford WI Emergency Mngr

Public report via Crawford County EM.

0429 PM Tstm Wnd Gst Boscobel 43.14N 90.70W
08/07/2021 E60 MPH Grant WI Fire Dept/Rescue

Power poles damaged.

0439 PM Tstm Wnd Dmg 4 SW Blue River 43.14N 90.61W
08/07/2021 Grant WI Emergency Mngr

Large trees down east of Boscobel. Two
public reports of a possible tornado in this
area.

0441 PM Tstm Wnd Dmg 4 E Boscobel 43.13N 90.62W
08/07/2021 Grant WI Law Enforcement

Large trees down and mobile homes damaged
southeast of Boscobel.

0449 PM Tstm Wnd Dmg 5 SSW Blue River 43.12N 90.61W
08/07/2021 Grant WI Emergency Mngr

Barns down and a house damaged south of Blue
River. Possible tornado damage.

0450 PM Tornado 3 S Blue River 43.15N 90.57W
08/07/2021 Grant WI Fire Dept/Rescue

Blue River Fire Dept reported a tornado on
the ground south of Blue River near County
Highway T.

0455 PM Hail 3 S Blue River 43.15N 90.56W
08/07/2021 E1.25 inch Grant WI Fire Dept/Rescue

Half dollar sized hail south of Blue River.

0456 PM Funnel Cloud 4 SW Muscoda 43.15N 90.50W
08/07/2021 Grant WI Fire Dept/Rescue

Muscoda Fire Dept observed a funnel cloud
near Ridge Road.

0503 PM Flash Flood Coon Valley 43.70N 91.01W
08/07/2021 Vernon WI Public

Public report via twitter.

0510 PM Flash Flood Coon Valley 43.70N 91.01W
08/07/2021 Vernon WI Emergency Mngr

Coon Creek about 2 feet from the bottom of
the U.S. Highway 14 bridge in Coon Valley.

0606 PM Hail Kendall 43.79N 90.37W
08/07/2021 E1.00 inch Monroe WI Fire Dept/Rescue

Kendall fire department reports quarter
sized hail.

Rain Reports

...Rainfall Reports from Midnight August 7 through 11 AM August 8...

Location                     Amount 

...IOWA...

...Allamakee County...
Harpers Ferry 4.1 SW         0.55 in
3 SE Waterville              0.53 in
3 S Dorchester               0.42 in
Monona 9.8 N                 0.41 in
Lansing 4.1 NW               0.39 in
Waukon 0.8 S                 0.33 in
Harpers Ferry 6.4 SSW        0.22 in
5 SW Waukon Jct              0.21 in
Postville 5.5 NE             0.15 in

...Chickasaw County...
Ionia 2W                     0.79 in
New Hampton 0.4 SW           0.71 in
New Hampton                  0.56 in
Jerico 2.8 WSW               0.53 in
Fredericksburg 0.3 S         0.13 in

...Clayton County...
1 WSW Marquette              0.14 in

...Fayette County...
Waucoma 3.2 S                0.13 in
Fayette                      0.11 in

...Floyd County...
Nashua 2SW                   0.59 in
Charles City                 0.51 in
Nora Springs 2.4 SSE         0.47 in

...Howard County...
Lime Springs 1.5 N           2.96 in
Saratoga                     1.44 in
Elma                         1.20 in
Riceville                    0.61 in

...Mitchell County...
St Ansgar                    0.64 in
Osage 4.7 E                  0.22 in

...Winneshiek County...
7 ENE Decorah                0.52 in
Decorah 4.9SE                0.17 in
Decorah                      0.12 in
Spillville                   0.12 in

...MINNESOTA...

...Dodge County...
Hayfield                     2.03 in
Mantorville 1.9 ESE          1.44 in
Claremont 2.5 ESE            0.79 in
Mantorville 1.1 SSE          0.69 in

...Fillmore County...
Preston 3.2 NNE              1.66 in
Preston Airport              1.29 in
Mabel                        1.09 in
Lanesboro                    0.88 in
1 NNW Fillmore               0.83 in
Preston                      0.80 in
Wykoff 3.1 NW                0.75 in
Spring Valley                0.23 in

...Houston County...
La Crescent 1.0 WSW          3.96 in
Houston 6.9 E                3.12 in
Hokah                        2.65 in
Hokah 4 NW                   2.44 in
1 ENE Mound Prairie          2.44 in
Houston                      1.96 in
Mound Prairie                1.76 in
Mabel 2.7 E                  1.66 in
Mound Prairie                1.57 in

...Mower County...
Austin 2.4 W                 0.82 in
Lansing - Cedar River        0.70 in
Austin 1.9 ENE               0.59 in
Dobbins Creek                0.58 in
Waltham 2.0 SE               0.55 in
Austin 1.5 WSW               0.50 in

...Olmsted County...
Rochester                    3.32 in
Rochester 3.3 ENE            2.60 in
Rochester 1.5 WSW            2.40 in
Rochester 5.5 N              2.29 in
Byron                        2.09 in
2 NE Rochester               2.03 in
Rochester 2.0 NNE            1.96 in
3 ENE Rochester              1.94 in
5 WSW Rochester              1.89 in
2 NNW Rochester              1.88 in
Rochester 5.8 ENE            1.79 in
Rochester-Beltline Bear Cree 1.78 in
Mayo Helipad                 1.73 in
1 W Chester                  1.68 in
Rochester 4.7 ENE            1.50 in
Rochester-Cascade Creek      1.32 in
3 W Rochester                1.16 in
4 NNW Rochester              1.07 in
2 W High Forest              0.91 in
Rochester Intl Airport       0.80 in
1 W Oronoco                  0.65 in
Stewartville 4.3 E           0.63 in
Elgin 2SSW                   0.54 in
6 NNW Genoa                  0.47 in
Elba 4.7 SW                  0.18 in

...Wabasha County...
Plainview                    2.96 in
Wabasha                      2.64 in
0.9 N Wabasha                2.56 in
Theilman 1 SSW               2.46 in
1 N Kellogg                  2.08 in
Lake City 0.9 E              1.69 in
Lake City                    1.58 in
Zumbro Falls 3.5 SSW         0.71 in
3 ESE Mazeppa                0.57 in
Mazeppa (IFLOWS)             0.52 in

...Winona County...
La Crescent Dam 7            5.27 in
La Crescent 4.0 NNW          4.74 in
Winona 1.3 SSW               4.15 in
Winona 2.0 ESE               3.72 in
Winona 1.9 ESE               3.60 in
Winona 12.0 ESE              3.21 in
3 NE Nodine                  2.93 in
Winona Dam 5A                2.71 in
Beaver                       2.40 in
Winona 4SW                   2.36 in
Lewiston 0.2 NW              1.86 in
4.2 N Rollingstone           1.69 in
Winona Municipal Airport     1.34 in
3 SW Elba                    1.17 in
Whitewater State Park        1.07 in
1 WSW Elba                   1.03 in

...WISCONSIN...

...Adams County...
Nekoosa 8.0 SSE              5.36 in
0.6 W Friendship             2.62 in
Friendship 6.4 NNE           2.26 in
Friendship 6.4 N             1.71 in
Oxford 4.3 W                 1.25 in
Oxford 4.6 WNW               1.21 in
Oxford 4.0 W                 1.13 in
Grand Marsh 1.0 W            1.11 in

...Buffalo County...
Alma Dam 4                   2.21 in
Mondovi 12.1 SSE             2.07 in

...Crawford County...
Gays Mills 1.0 NE            4.62 in
Gays Mills                   2.47 in
2.8 E Harpers Ferry          1.20 in
Eastman 2.4 NNE              0.94 in
Steuben                      0.38 in

...Grant County...
Muscoda 0.5 WSW              2.22 in
Boscobel                     0.48 in
Bloomington 3.5 N            0.31 in
Boscobel Airport             0.31 in
Patch Grove 0.1 NNW          0.11 in

...Jackson County...
Black River Falls 1.7 NNE    3.86 in
Black River Falls            3.78 in
1 E Black River Falls        3.19 in
Melrose 3.6 W                2.32 in
Black River Falls Airport    1.99 in

...Juneau County...
NECEDAH NWR RY DAM NECEDAH 5 4.39 in
Mauston                      2.72 in
Necedah                      1.68 in
3 ESE Lemonweir              1.58 in
New Lisbon 5.2 ENE           1.44 in
New Lisbon 6.3 NE            1.37 in
New Lisbon                   1.26 in
Volk Field                   1.21 in
0.6 W Necedah                0.95 in

...La Crosse County...
La Crosse 4.4 SSE            5.85 in
La Crosse                    5.80 in
La Crosse Regional Airport   5.78 in
La Crosse 4NNW               5.74 in
La Crosse 5.4 SE             5.52 in
Coon Valley 4.5 NNW          5.31 in
Onalaska 0.6 SW              5.10 in
La Crosse 1.3 SSE            4.97 in
Holmen 2S                    4.54 in
West Salem 0.7 W             3.84 in
Melrose 8.2 SSW              3.76 in

...Monroe County...
0.5 SW Sparta                2.34 in
Sparta/Fort McCoy Airport    1.63 in
2 E Cataract                 1.52 in
Wilton 4.2 E                 0.29 in

...Richland County...
Richland Center 4 N          2.12 in
Richland Center 4.0 N        2.12 in
1 SSE Richland Center        2.03 in
Cazenovia 4.4 SSW            1.09 in

...Taylor County...
Gilman 8.2 NNW               1.45 in
3 NE Lublin                  1.30 in
Westboro                     1.00 in
Medford                      0.97 in
Medford Airport              0.77 in
Sheldon 8.1 ENE              0.65 in
0.6 SE Medford               0.64 in
Medford 0.8 ENE              0.57 in

...Trempealeau County...
Trempealeau 7.6 NNW          3.83 in
Trempealeau                  3.38 in
Galesville 6ESE              3.30 in
Trempealeau Dam 6            2.96 in
Ettrick 4.0 WNW              2.40 in
Galesville 4.7 E             2.28 in
Osseo 0.4 E                  1.46 in

...Vernon County...
Westby                       4.58 in
Hillsboro 2 SW               3.30 in
La Farge                     3.21 in
Hillsboro 0.5 WSW            2.64 in
0.5 E Viroqua                1.93 in
Viroqua Municipal Airport    1.77 in
Viroqua 0.8 ESE              1.66 in
Genoa Dam 8                  0.52 in

Observations are collected from a variety of sources with varying
equipment and exposures. We thank all volunteer weather observers
for their dedication. Not all data listed are considered official.

...RAINFALL TOTALS FROM FRIDAY NIGHT THROUGH MONDAY MORNING...

LOCATION                     AMOUNT    TIME/DATE       LAT/LON              

...IOWA...

...ALLAMAKEE COUNTY...
3 S DORCHESTER               2.12 IN   0800 AM 08/09   43.42N/91.51W        
HARPERS FERRY 4.1 SW         1.57 IN   0800 AM 08/09   43.16N/91.21W        
POSTVILLE 5.5 NE             1.55 IN   0700 AM 08/09   43.14N/91.49W        
MONONA 9.8 N                 1.29 IN   0700 AM 08/09   43.19N/91.35W        
WAUKON 0.8 S                 1.10 IN   0645 AM 08/09   43.26N/91.47W        
3 SE WATERVILLE              1.03 IN   0907 AM 08/09   43.17N/91.24W        
5 SW WAUKON JCT              0.53 IN   0945 AM 08/09   43.11N/91.27W       

...CHICKASAW COUNTY...
2 N NASHUA                   5.77 IN   0200 AM 08/09   42.98N/92.54W
NEW HAMPTON 0.4 SW           5.21 IN   0700 AM 08/09   43.06N/92.32W        
NEW HAMPTON                  4.58 IN   0700 AM 08/09   43.06N/92.32W        
JERICO 2.8 WSW               3.88 IN   0600 AM 08/09   43.17N/92.31W 
1 SE BASSETT                 3.40 IN   0943 PM 08/08   43.05N/92.50W       
FREDERICKSBURG 0.3 S         3.27 IN   0800 AM 08/09   42.96N/92.20W        

...CLAYTON COUNTY...
ELKADER 6.8 WSW              1.14 IN   0600 AM 08/09   42.81N/91.52W        
ELKADER 6SSW                 1.01 IN   0700 AM 08/09   42.78N/91.45W        
GUTTENBERG DAM 10            1.00 IN   0600 AM 08/09   42.79N/91.10W        
BIG SPRING FISH HATCHERY     0.80 IN   0900 AM 08/09   42.91N/91.47W        
1 WSW MARQUETTE              0.43 IN   0900 AM 08/09   43.04N/91.21W        
GARBER                       0.39 IN   0915 AM 08/09   42.74N/91.26W        
MCGREGOR                     0.11 IN   1004 AM 08/09   43.02N/91.19W        
MONONA                       0.10 IN   1004 AM 08/09   43.04N/91.39W        

...FAYETTE COUNTY...
FAYETTE                      3.40 IN   0648 AM 08/09   42.88N/91.83W  
WADENA                       2.25 IN   0700 AM 08/09      
WAUCOMA 3.2 S                2.01 IN   0900 AM 08/09   43.01N/92.03W        
OELWEIN 0.3 E                1.84 IN   0700 AM 08/09   42.68N/91.91W        
ELDORADO 1E - TURKEY RIVER   1.83 IN   0800 AM 08/09   43.05N/91.81W       
WAUCOMA 1 WNW                1.68 IN   0700 AM 08/09   43.06N/92.05W        
OELWEIN 1 E                  1.56 IN   0630 AM 08/09   42.68N/91.88W        

...FLOYD COUNTY...
4 N NASHUA                   8.92 IN   0200 AM 08/09   43.01N/92.55W
CHARLES CITY                 4.96 IN   0700 AM 08/09   43.06N/92.67W        
CHARLES CITY                 1.00 IN   0930 AM 08/09   43.06N/92.67W        
NORA SPRINGS 2.4 SSE         0.79 IN   0700 AM 08/09   43.11N/92.99W        
2 NE DOUGHERTY               0.20 IN   1000 AM 08/09   42.95N/93.01W        

...HOWARD COUNTY...
LIME SPRINGS 1.5 N           3.60 IN   0700 AM 08/09   43.47N/92.28W        
ELMA                         2.26 IN   0700 AM 08/09   43.24N/92.44W        
SARATOGA                     2.24 IN   0946 AM 08/09   43.35N/92.42W        
3 E ELMA                     1.65 IN   0955 AM 08/09   43.25N/92.38W        
RICEVILLE                    1.47 IN   0946 AM 08/09   43.36N/92.48W        

...MITCHELL COUNTY...
OSAGE 4.7 E                  1.63 IN   0700 AM 08/09   43.28N/92.72W        
OSAGE                        1.30 IN   0700 AM 08/09   43.28N/92.81W        
ST ANSGAR                    1.23 IN   0630 AM 08/09   43.38N/92.92W       

...WINNESHIEK COUNTY...
SPILLVILLE                   2.36 IN   0600 AM 08/09   43.21N/91.95W       
DECORAH 4.9SE                2.02 IN   0700 AM 08/09   43.26N/91.70W        
FORT ATKINSON 2.6 W          1.88 IN   0700 AM 08/09   43.15N/91.98W        
7 ENE DECORAH                1.75 IN   0800 AM 08/09   43.34N/91.64W        
DECORAH                      1.43 IN   0945 AM 08/09   43.30N/91.80W        
1 ENE BLUFFTON               0.13 IN   0945 AM 08/09   43.41N/91.90W        

...MINNESOTA...

...DODGE COUNTY...
HAYFIELD                     2.06 IN   0957 AM 08/09   43.89N/92.85W        
MANTORVILLE 1.9 ESE          1.56 IN   0700 AM 08/09   44.05N/92.72W        
CLAREMONT 2.5 ESE            0.85 IN   0800 AM 08/09   44.04N/92.95W        
MANTORVILLE 1.1 SSE          0.81 IN   0700 AM 08/09   44.05N/92.74W        

...FILLMORE COUNTY...
PRESTON 3.2 NNE              1.89 IN   0730 AM 08/09   43.71N/92.05W        
PRESTON AIRPORT              1.55 IN   0955 AM 08/09   43.68N/92.17W        
WYKOFF 3.1 NW                1.35 IN   0700 AM 08/09   43.74N/92.31W        
LANESBORO                    1.34 IN   0930 AM 08/09   43.72N/91.98W        
1 NNW FILLMORE               1.11 IN   0930 AM 08/09   43.76N/92.27W        
SPRING VALLEY                0.50 IN   0700 AM 08/09   43.69N/92.39W        

...HOUSTON COUNTY...
HOUSTON 6.9 E                6.31 IN   0845 AM 08/09   43.76N/91.43W        
LA CRESCENT 1.0 WSW          6.22 IN   0700 AM 08/09   43.83N/91.32W        
HOKAH                        5.54 IN   0953 AM 08/09   43.80N/91.43W        
HOKAH 4 NW                   5.27 IN   0700 AM 08/09   43.80N/91.43W        
1 ENE MOUND PRAIRIE          5.27 IN   0700 AM 08/09   43.79N/91.42W        
CALEDONIA                    4.23 IN   0700 AM 08/09   43.63N/91.50W        
MOUND PRAIRIE                4.15 IN   0945 AM 08/09   43.78N/91.45W        
LA CRESCENT 5.4 SW           2.90 IN   0700 AM 08/09   43.78N/91.39W        
CALEDONIA 5.4 S              2.81 IN   0800 AM 08/09   43.56N/91.51W        
HOUSTON                      2.52 IN   1000 AM 08/09   43.77N/91.58W        
MOUND PRAIRIE                2.31 IN   0900 AM 08/09   43.78N/91.45W        
MABEL 2.7 E                  2.05 IN   0600 AM 08/09   43.51N/91.71W        

...MOWER COUNTY...
AUSTIN                       2.26 IN   0957 AM 08/09   43.65N/93.00W        
AUSTIN 1.9 ENE               1.34 IN   0800 AM 08/09   43.68N/92.94W        
AUSTIN 1.5 WSW               1.10 IN   0700 AM 08/09   43.67N/93.00W        
WALTHAM 2.0 SE               0.96 IN   0800 AM 08/09   43.80N/92.85W        
AUSTIN 2.4 W                 0.96 IN   0700 AM 08/09   43.67N/93.02W        
LANSING - CEDAR RIVER        0.70 IN   0930 AM 08/09   43.75N/92.96W        
AUSTIN 3 NW - TURTLE CREEK   0.64 IN   0930 AM 08/09   43.65N/92.98W        
DOBBINS CREEK                0.61 IN   0930 AM 08/09   43.68N/92.94W        

...OLMSTED COUNTY...
ROCHESTER                    6.82 IN   0952 AM 08/09   44.04N/92.44W        
ROCHESTER 3.3 ENE            4.47 IN   0800 AM 08/09   44.04N/92.42W        
ROCHESTER 5.8 ENE            3.30 IN   0700 AM 08/09   44.05N/92.37W 
1 W CHESTER WOODS            3.13 IN   0839 AM 08/09   44.00N/92.37W
ROCHESTER                    3.12 IN   0953 AM 08/09   44.01N/92.49W        
2 NE ROCHESTER               3.12 IN   0600 AM 08/09   44.04N/92.44W        
ROCHESTER-BELTLINE BEAR CREE 3.11 IN   0930 AM 08/09   44.01N/92.45W        
ROCHESTER 1.5 WSW            3.10 IN   0700 AM 08/09   44.00N/92.50W        
3 ENE ROCHESTER              3.09 IN   0930 AM 08/09   44.03N/92.43W        
ROCHESTER 5.5 N              2.56 IN   0930 AM 08/09   44.10N/92.47W        
ELGIN 2SSW                   2.42 IN   0700 AM 08/09   44.10N/92.27W        
1 W CHESTER                  2.41 IN   0621 AM 08/09   44.00N/92.38W        
MAYO HELIPAD                 2.29 IN   0955 AM 08/09   44.02N/92.48W        
ROCHESTER                    2.26 IN   0955 AM 08/09   44.09N/92.51W        
ROCHESTER                    2.22 IN   0955 AM 08/09   44.09N/92.49W        
BYRON                        2.15 IN   0945 AM 08/09   44.04N/92.64W        
2 NNW ROCHESTER              2.14 IN   0700 AM 08/09   44.05N/92.49W        
5 WSW ROCHESTER              2.06 IN   0900 AM 08/09   43.98N/92.56W        
SAINT CHARLES 7.6 NNW        1.99 IN   0547 AM 08/09   44.08N/92.10W        
ROCHESTER-CASCADE CREEK      1.87 IN   0930 AM 08/09   44.03N/92.47W        
ROCHESTER 4.7 ENE            1.83 IN   0638 AM 08/09   44.04N/92.39W        
ROCHESTER                    1.65 IN   1000 AM 08/09   44.05N/92.45W        
ROCHESTER INTERNATIONAL AIRP 1.51 IN   0954 AM 08/09   43.90N/92.50W        
3 W ROCHESTER                1.39 IN   0930 AM 08/09   44.02N/92.53W        
2 W HIGH FOREST              1.16 IN   0700 AM 08/09   43.85N/92.59W        
STEWARTVILLE 4.3 E           0.78 IN   0600 AM 08/09   43.86N/92.40W        
6 NNW GENOA                  0.77 IN   0900 AM 08/09   44.19N/92.65W        
ROCHESTER                    0.73 IN   0945 AM 08/09   44.18N/92.41W        
1 W ORONOCO                  0.72 IN   0930 AM 08/09   44.17N/92.55W        
ROCHESTER 0.8 WNW            0.67 IN   0800 AM 08/09   44.02N/92.49W       

...WABASHA COUNTY...
THEILMAN 1 SSW               3.08 IN   0730 AM 08/09   44.28N/92.19W        
PLAINVIEW                    3.05 IN   0948 AM 08/09   44.17N/92.17W        
WABASHA                      2.95 IN   0958 AM 08/09   44.30N/92.00W        
0.9 N WABASHA                2.89 IN   0700 AM 08/09   44.38N/92.05W        
LAKE CITY                    2.23 IN   0956 AM 08/09   44.32N/92.44W        
LAKE CITY 0.9 E              2.17 IN   0800 AM 08/09   44.44N/92.26W        
PLAINVIEW                    1.38 IN   1004 AM 08/09   44.16N/92.17W        
1 N KELLOGG                  1.30 IN   0900 AM 08/09   44.32N/92.00W        
ZUMBRO FALLS 3.5 SSW         0.73 IN   0700 AM 08/09   44.24N/92.46W        
3 ESE MAZEPPA                0.67 IN   0930 AM 08/09   44.26N/92.49W        
MAZEPPA (IFLOWS)             0.56 IN   0332 AM 08/09   44.27N/92.55W        

...WINONA COUNTY...
LA CRESCENT DAM 7            6.96 IN   0800 AM 08/09   43.87N/91.31W        
LA CRESCENT 4.0 NNW          6.49 IN   0700 AM 08/09   43.88N/91.34W        
WINONA 1.9 ESE               4.70 IN   0806 AM 08/09   44.04N/91.63W        
WINONA 2.0 ESE               4.50 IN   0730 AM 08/09   44.04N/91.63W        
WINONA DAM 5A                4.11 IN   0800 AM 08/09   44.09N/91.67W        
1 ESE WINONA                 3.67 IN   1000 AM 08/09   44.04N/91.63W        
3 NE NODINE                  3.51 IN   0930 AM 08/09   43.94N/91.41W        
LEWISTON 0.2 NW              3.06 IN   0700 AM 08/09   43.99N/91.87W        
BEAVER                       2.89 IN   0945 AM 08/09   44.15N/92.00W        
4.2 N ROLLINGSTONE           2.71 IN   0800 AM 08/09   44.16N/91.81W        
ALTURA 5W                    2.24 IN   0700 AM 08/09   44.06N/92.04W        
1 WSW ELBA                   1.90 IN   0945 AM 08/09   44.09N/92.03W        
WINONA 5.1 WSW               1.89 IN   0700 AM 08/09   44.03N/91.77W        
WINONA 1.3 SSW               1.74 IN   0700 AM 08/09   44.03N/91.68W        
3 SW ELBA                    1.52 IN   0930 AM 08/09   44.06N/92.05W        
WHITEWATER STATE PARK        1.47 IN   0930 AM 08/09   44.05N/92.05W        
WINONA MUNICIPAL AIRPORT     1.34 IN   0955 AM 08/09   44.07N/91.70W        
BEAVER                       0.67 IN   0900 AM 08/09   44.15N/92.00W        
SAINT CHARLES                0.63 IN   1005 AM 08/09   43.97N/92.06W        

...WISCONSIN...

...ADAMS COUNTY...
FRIENDSHIP 6.4 NNE           3.46 IN   0700 AM 08/09   44.06N/89.79W        
GRAND MARSH 1.0 W            3.43 IN   0700 AM 08/09   43.89N/89.73W        
OXFORD 4.3 W                 3.13 IN   0800 AM 08/09   43.79N/89.65W        
FRIENDSHIP 6.4 N             2.92 IN   0700 AM 08/09   44.06N/89.80W        
OXFORD 4.0 W                 2.65 IN   0700 AM 08/09   43.79N/89.64W        
NEKOOSA 8.0 SSE              1.75 IN   0700 AM 08/09   44.21N/89.85W        

...BUFFALO COUNTY...
MONDOVI 12.1 SSE             3.61 IN   0620 AM 08/09   44.40N/91.60W        
ALMA DAM 4                   2.65 IN   0800 AM 08/09   44.33N/91.92W       

...CRAWFORD COUNTY...
GAYS MILLS 1.0 NE            5.47 IN   0700 AM 08/09   43.33N/90.84W        
2.8 E HARPERS FERRY          2.16 IN   0800 AM 08/09   43.21N/91.10W        
DE SOTO                      1.39 IN   0956 AM 08/09   43.42N/91.19W        
0.6 NE PRAIRIE DU CHIEN      0.97 IN   0700 AM 08/09   43.05N/91.13W        
STEUBEN                      0.81 IN   0945 AM 08/09   43.18N/90.86W        
PRAIRIE DU CHIEN 1.4 N       0.81 IN   0700 AM 08/09   43.06N/91.14W        
EASTMAN 2.4 NNE              0.76 IN   0545 AM 08/09   43.20N/91.00W        
GAYS MILLS                   0.65 IN   0745 AM 08/09   43.32N/90.85W        
STEUBEN 4SE                  0.63 IN   0715 AM 08/09   43.13N/90.84W        
PRAIRIE DU CHIEN  AIRPORT    0.57 IN   0955 AM 08/09   43.02N/91.12W        

...GRANT COUNTY...
BLOOMINGTON 3.5 N            1.35 IN   0653 AM 08/09   42.94N/90.92W        
PATCH GROVE 0.1 NNW          1.09 IN   0700 AM 08/09   42.94N/90.97W        
BOSCOBEL                     0.96 IN   0903 AM 08/09   43.15N/90.68W        
PLATTEVILLE 0.3 NE           0.81 IN   0700 AM 08/09   42.74N/90.47W        
CASSVILLE 7.8 ENE            0.80 IN   0700 AM 08/09   42.75N/90.84W        
BOSCOBEL AIRPORT             0.72 IN   0953 AM 08/09   43.15N/90.68W        
LANCASTER                    0.65 IN   0941 AM 08/09   42.83N/90.69W        
MUSCODA 0.5 WSW              0.45 IN   0758 AM 08/09   43.18N/90.44W        
PLATTEVILLE MUNICIPAL AIRPOR 0.42 IN   0955 AM 08/09   42.68N/90.43W        

...JACKSON COUNTY...
1 SE HATFIELD                6.50 IN   0700 AM 08/09   
BLACK RIVER FALLS 1.7 NNE    5.11 IN   0700 AM 08/09   44.32N/90.83W        
1 E BLACK RIVER FALLS        3.96 IN   0915 AM 08/09   44.30N/90.73W        
MELROSE 3.6 W                3.46 IN   0700 AM 08/09   44.13N/91.07W        
BLACK RIVER FALLS AREA AIRPO 2.64 IN   0955 AM 08/09   44.25N/90.85W        

...JUNEAU COUNTY...
NECEDAH NWR RY DAM NECEDAH 5 5.25 IN   0910 AM 08/09   44.06N/90.17W        
MAUSTON                      3.76 IN   0957 AM 08/09   43.80N/90.07W        
NEW LISBON 5.2 ENE           3.17 IN   0700 AM 08/09   43.91N/90.07W        
NEW LISBON                   2.81 IN   0945 AM 08/09   43.87N/90.17W        
NECEDAH                      2.23 IN   0848 AM 08/09   44.03N/90.08W        
NEW LISBON 6.3 NE            2.15 IN   0722 AM 08/09   43.93N/90.06W        
3 ESE LEMONWEIR              2.07 IN   0530 AM 08/09   43.77N/89.96W        
VOLK FIELD                   1.32 IN   0911 AM 08/09   43.92N/90.27W        
0.6 W NECEDAH                0.68 IN   0948 AM 08/09   44.02N/90.08W        

...LA CROSSE COUNTY...
LA CROSSE 4NNW               8.01 IN   0730 AM 08/09   43.87N/91.27W        
LA CROSSE                    7.79 IN   1000 AM 08/09   43.77N/91.22W        
LA CROSSE 5.4 SE             7.74 IN   0800 AM 08/09   43.77N/91.17W        
LA CROSSE REGIONAL AIRPORT   7.60 IN   0953 AM 08/09   43.88N/91.25W        
LA CROSSE 4.4 SSE            7.53 IN   0700 AM 08/09   43.77N/91.21W        
ONALASKA 0.6 SW              7.05 IN   0700 AM 08/09   43.88N/91.23W        
LA CROSSE                    6.49 IN   0908 AM 08/09   43.82N/91.19W        
COON VALLEY 4.5 NNW          6.38 IN   0700 AM 08/09   43.76N/91.06W
ONALASKA                     5.88 IN   0700 AM 08/09           
WEST SALEM 0.7 W             5.34 IN   0700 AM 08/09   43.90N/91.10W
HOLMEN 2SSE                  5.06 IN   0700 AM 08/09      

...MONROE COUNTY...
CASHTON 3 NNW                5.45 IN   0752 AM 08/09   43.79N/90.80W        
WARRENS 4.7 WSW              3.76 IN   0700 AM 08/09   44.10N/90.59W        
0.5 SW SPARTA                3.54 IN   0800 AM 08/09   43.94N/90.82W        
SPARTA/FORT MCCOY AIRPORT    2.93 IN   0955 AM 08/09   43.97N/90.73W        
2 E CATARACT                 2.41 IN   0958 AM 08/09   44.09N/90.79W       

...RICHLAND COUNTY...
1 SSE RICHLAND CENTER        2.08 IN   1004 AM 08/09   43.32N/90.38W        

...TAYLOR COUNTY...
SHELDON 8.1 ENE              3.07 IN   0700 AM 08/09   45.36N/90.80W        
WESTBORO                     2.70 IN   1000 AM 08/09   45.37N/90.31W        
3 NE LUBLIN                  1.72 IN   0714 AM 08/09   45.11N/90.69W        
MEDFORD                      1.25 IN   0945 AM 08/09   45.30N/90.30W        
0.6 SE MEDFORD               1.06 IN   0800 AM 08/09   45.13N/90.34W        
MEDFORD 0.8 ENE              0.99 IN   0700 AM 08/09   45.14N/90.33W        

...TREMPEALEAU COUNTY...
TREMPEALEAU 7.6 NNW          4.48 IN   0700 AM 08/09   44.11N/91.48W        
TREMPEALEAU                  4.00 IN   0956 AM 08/09   44.07N/91.51W        
TREMPEALEAU DAM 6            3.97 IN   0800 AM 08/09   44.00N/91.44W        
GALESVILLE 1.0 NE            3.55 IN   0600 AM 08/09   44.10N/91.34W        
ETTRICK 4.0 WNW              3.41 IN   0658 AM 08/09   44.19N/91.34W        
BLAIR (IFLOWS)               2.92 IN   1135 PM 08/08   44.30N/91.23W        
GALESVILLE 4.7 E             2.00 IN   0742 AM 08/09   44.08N/91.26W        
WHITEHALL (IFLOWS)           1.70 IN   1205 AM 08/09   44.37N/91.32W        

...VERNON COUNTY...
LA FARGE                     4.00 IN   0946 AM 08/09   43.60N/90.63W        
HILLSBORO 2 SW               3.64 IN   0700 AM 08/09   43.63N/90.38W        
VIROQUA MUNICIPAL AIRPORT    3.38 IN   0955 AM 08/09   43.58N/90.90W        
HILLSBORO 0.5 WSW            2.99 IN   0700 AM 08/09   43.65N/90.35W        
0.5 E VIROQUA                2.95 IN   0700 AM 08/09   43.56N/90.88W        
VIROQUA 0.8 ESE              2.51 IN   0700 AM 08/09   43.55N/90.87W        
GENOA DAM 8                  0.95 IN   0600 AM 08/09   43.57N/91.23W       

OBSERVATIONS ARE COLLECTED FROM A VARIETY OF SOURCES WITH VARYING
EQUIPMENT AND EXPOSURES. WE THANK ALL VOLUNTEER WEATHER OBSERVERS 
FOR THEIR DEDICATION. NOT ALL DATA LISTED ARE CONSIDERED OFFICIAL.

$$

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Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

Preliminary Storm Summary For Aug 7th, 2021