Numerous strong to severe storms are expected to develop from mid afternoon through early evening. Damaging winds will be the main threat, but large hail and tornadoes are also possible. Have multiple ways to receive warnings and stay weather aware if you have outdoor plans. Read More >
Overview
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Storms that repeated over parts of west-central Wisconsin from the late evening hours of August 27 into the early morning hours of August 28 resulted in an area of very heavy rainfall and flash flooding. Roughly 4 to 8" fell between La Crosse, WI and Portage, WI. High water over roadways, washed out culverts, and a mudslide were reported by local officials. A thunderstorm complex that moved through later in the morning of August 28 then added an additional 0.5 to 1" to this same area, resulting in some places receiving upwards of 9" of rain. |
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Photos & Video:
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| Washed out culvert in rural Monroe County (Courtesy of Monroe County Sheriff Dept.) |
Mudslide near Oakdale, WI (Courtesy of Monroe County EM) |
Mudslide near Oakdale, WI (Courtesy of Monroe County EM) |
Radar Estimated Precipitation (NWS La Crosse) |
Storm Reports
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LA CROSSE WI
426 AM CDT SAT AUG 29 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0444 PM FLASH FLOOD 4 WSW WHITE CREEK 43.80N 89.93W
08/28/2020 JUNEAU WI EMERGENCY MNGR
WATER STILL SURROUNDING HOMES AND ROAD
CLOSURES.
0444 PM FLASH FLOOD 3 SSE WHITE CREEK 43.79N 89.83W
08/28/2020 ADAMS WI EMERGENCY MNGR
FLOODING NOTED AT FERN AND 15TH.
0700 AM FLASH FLOOD 2 WNW TUNNEL CITY 44.02N 90.61W
08/28/2020 MONROE WI EMERGENCY MNGR
CULVERT WASHED OUT IN TOWN OF GREENFIELD LED
TO ACCIDENTS AND FLIPPED OVER MILK TRUCK.
0650 AM FLASH FLOOD 3 WNW TUNNEL CITY 44.02N 90.61W
08/28/2020 MONROE WI LAW ENFORCEMENT
DELAYED REPORT. ROAD WASHED OUT.
0440 AM FLASH FLOOD TOMAH 43.99N 90.50W
08/28/2020 MONROE WI LAW ENFORCEMENT
REPORTS OF FLOODED ROADS IN THE TOMAH AREA.
1000 AM FLASH FLOOD 3 N PLAINVILLE 43.76N 89.82W
08/28/2020 ADAMS WI LAW ENFORCEMENT
WATER OVER PARTS OF FREEDOM COURT AND 13TH
COURT IN SOUTHWEST PART OF COUNTY.
0200 AM FLASH FLOOD 3 N PLAINVILLE 43.76N 89.82W
08/28/2020 ADAMS WI LAW ENFORCEMENT
ROAD WASHED OUT.
0700 AM FLASH FLOOD 3 SSE OAKDALE 43.93N 90.36W
08/28/2020 MONROE WI EMERGENCY MNGR
MUDSLIDE TOOK HOUSE OFF FOUNDATION ALONG
HOPE ROAD BETWEEN CLIFTON AND OAKDALE.
0159 PM FLASH FLOOD 3 NW NEW LISBON 43.91N 90.20W
08/28/2020 JUNEAU WI LAW ENFORCEMENT
STILL REPORTING WATER OVER RURAL ROADS AND A
FEW COUNTY ROADS.
0859 AM FLASH FLOOD 4 N MAUSTON 43.85N 90.07W
08/28/2020 JUNEAU WI LAW ENFORCEMENT
MANY BACK ROADS WITH WATER OVER THEM. WORST
IMPACT IS NEAR INTERSTATE 90/94 AREAS.
0600 AM FLASH FLOOD MAUSTON 43.80N 90.08W
08/28/2020 JUNEAU WI LAW ENFORCEMENT
MULTIPLE ROADS AND HIGHWAYS ACROSS SOUTHERN
JUNEAU COUNTY WITH WATER OVER THEM. CULVERTS
ALSO REPORTS AS BEING WASHED OUT.
0443 AM FLASH FLOOD 1 SE MAUSTON 43.79N 90.06W
08/28/2020 JUNEAU WI LAW ENFORCEMENT
WATER OVER ROADWAYS.
0442 AM FLASH FLOOD MAUSTON 43.80N 90.08W
08/28/2020 JUNEAU WI LAW ENFORCEMENT
WATER COMING UP UNDER TO DOOR AT THE
SHERIFFS OFFICE.
0645 AM FLASH FLOOD 4 N CAMP DOUGLAS 43.97N 90.27W
08/28/2020 JUNEAU WI PUBLIC
DELAYED REPORT. ROAD CLOSED DUE TO HIGH
WATER.
&&
$$
Rain Reports
Public Information Statement National Weather Service La Crosse WI 117 PM CDT Fri Aug 28 2020 ...24 HOUR RAINFALL REPORTS... Location Amount Time/Date Lat/Lon ...Iowa... ...Allamakee County... 3 S Dorchester 0.31 in 1015 AM 08/28 43.42N/91.51W ...Chickasaw County... 5 NE New Hampton 0.24 in 1245 PM 08/28 43.13N/92.26W Ionia 2W 0.12 in 1230 PM 08/28 43.03N/92.50W New Hampton 0.09 in 0100 PM 08/28 43.06N/92.32W ...Fayette County... Eldorado 1E - Turkey River 0.24 in 1245 PM 08/28 43.05N/91.81W ...Floyd County... Charles City 0.05 in 1215 PM 08/28 43.06N/92.67W 2 NE Dougherty 0.02 in 1255 PM 08/28 42.95N/93.01W ...Howard County... Elma 0.78 in 0700 AM 08/28 43.24N/92.44W Riceville 0.74 in 1230 PM 08/28 43.36N/92.48W 3 E Elma 0.68 in 1255 PM 08/28 43.25N/92.38W Saratoga 0.50 in 1231 PM 08/28 43.35N/92.42W ...Mitchell County... St.Ansgar 0.08 in 1230 PM 08/28 43.38N/92.92W ...Winneshiek County... 1 ENE Bluffton 0.20 in 1230 PM 08/28 43.41N/91.90W Spillville 0.20 in 1000 AM 08/28 43.21N/91.95W Decorah 0.17 in 0100 PM 08/28 43.30N/91.79W 1 ENE Jackson Junction 0.16 in 1045 AM 08/28 43.11N/92.04W ...Minnesota... ...Dodge County... Mantorville 0.70 in 1052 AM 08/28 44.07N/92.76W 2 WNW Byron 0.61 in 1255 PM 08/28 44.05N/92.69W Mantorville 1.9 ESE 0.53 in 0830 AM 08/28 44.05N/92.72W Hayfield 0.3 SSE 0.53 in 0800 AM 08/28 43.89N/92.85W Hayfield 0.50 in 1257 PM 08/28 43.89N/92.85W Claremont 2.5 ESE 0.40 in 0800 AM 08/28 44.04N/92.95W ...Fillmore County... 2 S Pilot Mound 1.01 in 1015 AM 08/28 43.78N/92.03W Lanesboro 0.95 in 1145 AM 08/28 43.72N/91.98W 2 S Pilot Mound 0.80 in 0830 AM 08/28 43.78N/92.03W Preston 3.2 NNE 0.79 in 1000 AM 08/28 43.71N/92.05W Preston Airport 0.64 in 1255 PM 08/28 43.68N/92.17W 1 NNW Fillmore 0.58 in 1015 AM 08/28 43.76N/92.27W ...Houston County... Mound Prairie 1.97 in 0900 AM 08/28 43.78N/91.45W Houston 1.68 in 1255 PM 08/28 43.77N/91.58W 1 NNE Houston 1.24 in 1145 AM 08/28 43.77N/91.57W 3 SSW Freeburg 0.80 in 0716 AM 08/28 43.57N/91.39W 1 SSE Brownsville 0.42 in 1130 AM 08/28 43.69N/91.27W ...Mower County... Austin 1.9 ENE 1.17 in 0800 AM 08/28 43.68N/92.94W Austin 2.4 W 1.10 in 0700 AM 08/28 43.67N/93.02W Austin 1.5 WSW 1.09 in 0700 AM 08/28 43.67N/93.00W Austin 3 NW - Turtle Creek 1.08 in 0700 AM 08/28 43.65N/92.98W Austin Waste Water Treatment 0.97 in 0700 AM 08/28 43.65N/92.97W Austin 3S - Cedar River 0.32 in 1145 AM 08/28 43.64N/92.97W ...Olmsted County... Rochester International Airp 1.44 in 0954 AM 08/28 43.90N/92.50W Rochester 2.0 N 1.00 in 1036 AM 08/28 44.05N/92.48W Rochester 0.8 WNW 0.92 in 0947 AM 08/28 44.02N/92.49W Elgin 2SSW 0.91 in 0700 AM 08/28 44.10N/92.27W Rochester 2.0 NNE 0.90 in 0700 AM 08/28 44.04N/92.47W Rochester 0.89 in 1230 PM 08/28 44.05N/92.45W 6 NNW Genoa 0.85 in 1115 AM 08/28 44.19N/92.65W Byron 0.74 in 1231 PM 08/28 44.04N/92.64W ...Wabasha County... 1 N Kellogg 1.03 in 1100 AM 08/28 44.32N/92.00W Theilman 1 SSW 0.87 in 0730 AM 08/28 44.28N/92.19W 3 ESE Mazeppa 0.84 in 1015 AM 08/28 44.26N/92.49W Plainview 0.76 in 1254 PM 08/28 44.17N/92.17W Zumbro Falls 3.5 SSW 0.75 in 0700 AM 08/28 44.24N/92.46W Plainview 0.73 in 0824 AM 08/28 44.17N/92.17W Wabasha 0.70 in 1258 PM 08/28 44.30N/92.00W Mazeppa 5.4 SSE 0.54 in 0800 AM 08/28 44.20N/92.50W Lake City 0.1 E 0.29 in 0940 AM 08/28 44.44N/92.28W Lake City 0.28 in 1230 PM 08/28 44.44N/92.28W ...Winona County... Beaver 0.73 in 1100 AM 08/28 44.15N/92.00W 3 SW Elba 0.48 in 1045 AM 08/28 44.06N/92.05W 1 ESE Winona 0.46 in 1255 PM 08/28 44.04N/91.63W 1 WSW Elba 0.41 in 1130 AM 08/28 44.09N/92.03W Winona Municipal Airport 0.39 in 1255 PM 08/28 44.07N/91.70W Dakota 0.36 in 1215 PM 08/28 43.91N/91.36W Saint Charles 0.34 in 0100 PM 08/28 43.97N/92.06W ...Wisconsin... ...Adams County... Oxford 4.3 W 4.88 in 0800 AM 08/28 43.79N/89.65W Oxford 4.0 W 4.03 in 0700 AM 08/28 43.79N/89.64W 4 ENE Plainville 3.50 in 1255 PM 08/28 43.74N/89.72W Nekoosa 8.0 SSE 2.63 in 0900 AM 08/28 44.21N/89.85W Grand Marsh 1.0 W 2.48 in 0700 AM 08/28 43.89N/89.73W 2.0 NW Strongs Prairie 2.10 in 0715 AM 08/28 44.08N/90.00W 0.6 W Friendship 2.02 in 0700 AM 08/28 43.98N/89.83W Friendship 6.4 NNE 0.76 in 0700 AM 08/28 44.06N/89.79W Nekoosa 6.6 SSE 0.69 in 0700 AM 08/28 44.22N/89.88W ...Buffalo County... Mondovi 12.1 SSE 0.06 in 0700 AM 08/28 44.40N/91.60W Dodge 0.04 in 1245 PM 08/28 44.13N/91.55W Alma Dam 4 0.04 in 0800 AM 08/28 44.33N/91.92W ...Crawford County... De Soto 0.58 in 1251 PM 08/28 43.42N/91.19W Steuben 0.23 in 1100 AM 08/28 43.18N/90.86W 2.8 E Harpers Ferry 0.16 in 1100 AM 08/28 43.21N/91.10W ...Grant County... Boscobel Airport 0.35 in 1253 PM 08/28 43.15N/90.68W Boscobel 0.31 in 1103 AM 08/28 43.15N/90.68W Muscoda 0.23 in 1255 PM 08/28 43.19N/90.46W ...Jackson County... Black River Falls 3.25 in 0830 AM 08/28 44.29N/90.85W 1 E Black River Falls 3.15 in 1015 AM 08/28 44.30N/90.73W North Bend 2.82 in 1255 PM 08/28 44.10N/91.11W Black River Falls 1.7 NNE 0.87 in 0700 AM 08/28 44.32N/90.83W Black River Falls Area Airpo 0.62 in 0515 AM 08/28 44.25N/90.85W ...Juneau County... New Lisbon 9.54 in 1231 PM 08/28 43.87N/90.17W Volk Field 7.74 in 1256 PM 08/28 43.92N/90.27W Mauston 7.55 in 1257 PM 08/28 43.80N/90.07W Necedah 5.89 in 1248 PM 08/28 44.03N/90.08W 1 W Lyndon Station 5.22 in 1255 PM 08/28 43.71N/89.93W 2 N Cloverdale 4.99 in 1200 PM 08/28 44.06N/90.17W Mauston Airport 4.29 in 1255 PM 08/28 43.83N/90.13W Necedah 5.0 ESE 3.80 in 0700 AM 08/28 43.99N/89.99W 0.6 W Necedah 1.86 in 0848 AM 08/28 44.02N/90.08W ...La Crosse County... 1 NNW Onalaska 1.10 in 1053 AM 08/28 43.90N/91.23W La Crosse 1.02 in 1245 PM 08/28 43.77N/91.22W West Salem 1.02 in 0700 AM 08/28 43.90N/91.09W La Crosse Regional Airport 0.84 in 1253 PM 08/28 43.88N/91.25W Holmen 2S 0.83 in 0700 AM 08/28 NWS La Crosse 0.68 in 1100 AM 08/28 Onalaska 2N 0.53 in 0700 AM 08/28 43.91N/91.23W ...Monroe County... 4 NE Cataract 7.30 in 0931 AM 08/28 44.12N/90.77W 1 NNW Tomah 5.60 in 0932 AM 08/28 44.00N/90.51W 3 NNE Tunnel City 5.00 in 1131 AM 08/28 44.04N/90.55W Tomah 5.00 in 0540 AM 08/28 43.99N/90.50W Wilton 4.00 in 0540 AM 08/28 43.81N/90.53W 2 E Cataract 3.79 in 1258 PM 08/28 44.09N/90.79W Cataract 3.35 in 0614 AM 08/28 44.09N/90.84W Warrens 4.7 WSW 2.68 in 0700 AM 08/28 44.10N/90.59W Wilton 4.2 E 2.05 in 0700 AM 08/28 43.81N/90.44W Sparta 3.8 S 1.70 in 0630 AM 08/28 43.89N/90.80W Sparta/Fort McCoy Airport 1.61 in 1255 PM 08/28 43.97N/90.73W 3 SSW Sparta 1.55 in 0515 AM 08/28 43.90N/90.83W 0.5 SW Sparta 1.42 in 0800 AM 08/28 43.94N/90.82W Cashton 3 NNW 0.97 in 0742 AM 08/28 43.79N/90.80W ...Richland County... 1 SSE Richland Center 0.34 in 1259 PM 08/28 43.32N/90.38W ...Taylor County... Gilman 8.2 NNW 0.64 in 0800 AM 08/28 45.28N/90.86W Medford Airport 0.55 in 1255 PM 08/28 45.10N/90.30W Medford 0.45 in 0100 PM 08/28 45.30N/90.30W 3 NE Lublin 0.37 in 1214 PM 08/28 45.11N/90.69W ...Trempealeau County... Ettrick 3.2 NE 0.75 in 0650 AM 08/28 44.20N/91.23W Galesville 4.7 E 0.64 in 0705 AM 08/28 44.08N/91.26W Trempealeau Dam 6 0.63 in 0800 AM 08/28 44.00N/91.44W Ettrick 4.0 WNW 0.61 in 0716 AM 08/28 44.19N/91.34W Galesville 2WSW 0.61 in 0700 AM 08/28 44.07N/91.39W Trempealeau 0.50 in 1257 PM 08/28 44.07N/91.51W Galesville 1.0 NE 0.26 in 0600 AM 08/28 44.10N/91.34W ...Vernon County... Westby 1.75 in 1111 AM 08/28 43.66N/90.86W La Farge 1.61 in 1216 PM 08/28 43.60N/90.63W Hillsboro 0.5 WSW 1.56 in 0700 AM 08/28 43.65N/90.35W Genoa Dam 8 1.39 in 1000 AM 08/28 43.57N/91.23W Hillsboro 2 SW 0.97 in 0700 AM 08/28 43.63N/90.38W Viroqua Municipal Airport 0.67 in 1255 PM 08/28 43.58N/90.90W 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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