Overview
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Heavy snow occurred mainly during the afternoon and evening of Saturday, January 28, 2023, leading to a swath of 6-10 inches of snow accumulation from Dodgeville through Madison and down through Racine County, with some locally higher totals. This event was primarily driven by strong warm air advection and frontogenesis aloft at the 850mb to 700mb level which provided strong lift and saturation within the dendritic growth zone. Multiple shortwave troughs at the 500mb level also moved overhead through Saturday leading to multiple waves of banded precipitation. The areas that saw the most accumulation were run over by the most bands on Saturday, including a particularly prolonged heavy snow band that set up from Milwaukee to Madison Saturday evening. Official snow totals from our Official Climate Observation sites at the Milwaukee and Madison airports measured 7.9 inches and 7.3 inches of accumulation respectively. The clustering of the highest totals looked to be in Racine County, with localized maxima of 10 to 10.5 inches stretching back west along I-94 and through Madison. |
 Hourly Radar from 5:40 AM on January 28 to 3:40 AM on January 29 |
Snow
Here's an estimated snowfall map using local storm reports as well as some interpolation. The swath of snow generally moved through far southern Wisconsin, with elevated totals impacting the Madison Area, the Interstate 94 corridor, and the southeastern Wisconsin Metro area of Milwaukee, Racine, and Kenosha.
Storm Reports
Check out the local storm reports from this morning below. Reports below are from Co-op, CoCoRaHS, and measurements with photos that were relayed via social media. Anecdotal claims of locally higher amounts around 12 to 13 inches were shared in spots, but were not LSR'ed without photo proof. Nevertheless, these reported higher amounts are still within the realm of possibility. Public Information Statement National Weather Service Milwaukee/Sullivan WI 1016 AM CST Sun Jan 29 2023 ...SNOWFALL REPORTS... Location Amount Time/Date Lat/Lon ...Wisconsin... ...Columbia County... Columbus 1.2 S 4.8 in 0700 AM 01/29 43.32N/89.03W 1 SE Lake Wisconsin 3.8 in 0727 AM 01/29 43.37N/89.56W Portage 5.7 WSW 3.7 in 0600 AM 01/29 43.51N/89.57W ...Dane County... 1 N Monona 10.2 in 0700 AM 01/29 43.07N/89.33W Madison 6.4 W 9.5 in 0700 AM 01/29 43.08N/89.52W Madison 4.0 W 9.2 in 0700 AM 01/29 43.08N/89.47W Deerfield 9.0 in 0904 AM 01/29 43.05N/89.08W 4 ENE Maple Bluff 8.9 in 0811 AM 01/29 43.12N/89.29W Fitchburg 1.1 NW 8.9 in 0700 AM 01/29 43.00N/89.44W Madison 3.2 E 8.8 in 0700 AM 01/29 43.08N/89.32W Madison 3.7 WSW 8.5 in 0700 AM 01/29 43.06N/89.46W 1 SSW Madison 8.4 in 0736 AM 01/29 43.07N/89.39W Oregon 1.4 WNW 8.2 in 0700 AM 01/29 42.93N/89.41W Sun Prairie 3.0 W 7.5 in 0700 AM 01/29 43.18N/89.29W 3 NE Maple Bluff 7.3 in 0600 AM 01/29 43.14N/89.33W Oregon 7.2 in 0432 AM 01/29 42.93N/89.38W 1 NE Shorewood Hills 6.5 in 0921 AM 01/29 43.08N/89.43W Stoughton 2.7 SSE 6.5 in 0600 AM 01/29 42.88N/89.21W 1 E Sun Prairie 6.3 in 0932 AM 01/29 43.19N/89.22W ...Dodge County... 1 WNW Watertown 6.8 in 0615 AM 01/29 43.21N/88.75W Theresa 3.1 SE 5.5 in 0800 AM 01/29 43.49N/88.40W Theresa 0.5 SSW 5.0 in 0700 AM 01/29 43.51N/88.46W 2 WNW Beaver Dam 4.9 in 0857 AM 01/29 43.47N/88.88W Beaver Dam 1.4 SSW 4.5 in 0800 AM 01/29 43.45N/88.85W Horicon-WWTP 4.3 in 0700 AM 01/29 43.45N/88.63W Theresa 4.0 in 0915 AM 01/29 43.52N/88.45W Columbus 4.8 ENE 2.2 in 0700 AM 01/29 43.36N/88.94W ...Fond du Lac County... 1 ESE Fond Du Lac 3.4 in 0728 AM 01/29 43.78N/88.44W Eldorado 2.3 S 2.6 in 0724 AM 01/29 43.79N/88.62W ...Green County... 1.2 W Monroe 3.0 in 0800 AM 01/29 42.60N/89.67W ...Green Lake County... Green Lake 0.8 E 2.0 in 0700 AM 01/29 43.84N/88.94W ...Iowa County... Dodgeville 2.7 NE 7.8 in 0700 AM 01/29 42.99N/90.09W Mineral Point 7.3 ENE 7.5 in 0700 AM 01/29 42.91N/90.06W 6 ENE Mineral Point 7.3 in 0430 AM 01/29 42.88N/90.06W Dodgeville 5.9 in 0745 AM 01/29 42.96N/90.14W ...Jefferson County... 4 SSE Sullivan 8.9 in 0659 AM 01/29 42.97N/88.55W Jefferson 8.5 in 0926 AM 01/29 43.00N/88.81W Palmyra 1.5 N 8.5 in 0700 AM 01/29 42.90N/88.59W Palmyra 1.9 SW 8.2 in 0600 AM 01/29 42.86N/88.61W Waterloo 7.1 in 0753 AM 01/29 43.19N/88.98W ...Kenosha County... Kenosha 3.8 WSW 6.3 in 0600 AM 01/29 42.57N/87.93W Pleasant Prairie 1.4 ESE 6.1 in 0700 AM 01/29 42.52N/87.86W 3 W Kenosha 6.0 in 0751 AM 01/29 42.59N/87.88W Kenosha 1.7 S 5.7 in 0630 AM 01/29 42.56N/87.86W Kenosha 3.1 SSE 5.3 in 0645 AM 01/29 42.54N/87.84W ...Lafayette County... Darlington 4.9 SSE 4.0 in 0700 AM 01/29 42.61N/90.10W ...Marquette County... 2.0 SE Montello 2.0 in 0700 AM 01/29 43.78N/89.30W ...Milwaukee County... 1 NNE West Allis 8.5 in 0924 AM 01/29 43.02N/88.02W Greendale 1.0 ENE 8.4 in 0700 AM 01/29 42.94N/87.98W 3 SSW Hales Corners 8.0 in 0721 AM 01/29 42.90N/88.07W 3 SSW Hales Corners 8.0 in 0712 AM 01/29 42.90N/88.07W Wauwatosa 1.9 E 8.0 in 0700 AM 01/29 43.06N/88.00W Milwaukee 3.6 NNW 8.0 in 0600 AM 01/29 43.11N/87.99W 2 WSW Saint Francis 7.9 in 0600 AM 01/29 42.95N/87.91W 1 SSW Greendale 7.8 in 0736 AM 01/29 42.92N/88.00W Greendale 1.0 NNE 7.0 in 0700 AM 01/29 42.95N/87.99W Franklin 3.7 NW 6.0 in 0700 AM 01/29 42.92N/88.07W Greendale 1.5 NW 5.7 in 0700 AM 01/29 42.95N/88.03W Milwaukee 2.4 WNW 5.5 in 0700 AM 01/29 43.08N/88.01W ...Ozaukee County... 1 SW Mequon 7.0 in 0721 AM 01/29 43.22N/88.00W Grafton 1 S 6.5 in 0700 AM 01/29 43.31N/87.96W Cedarburg 1.2 SSW 6.0 in 0700 AM 01/29 43.28N/88.00W Saukville 0.9 SSW 5.5 in 0700 AM 01/29 43.37N/87.95W Grafton 5.0 in 0805 AM 01/29 43.32N/87.95W West Bend 7.3 E 5.0 in 0700 AM 01/29 43.43N/88.04W Saukville 4.5 in 0927 AM 01/29 43.39N/87.93W Port Washington-CoCoRaHS 4.1 in 0700 AM 01/29 43.39N/87.88W Belgium 1 NW 3.0 in 0730 AM 01/29 43.51N/87.85W ...Racine County... Burlington 11.0 in 0934 AM 01/29 42.68N/88.28W Racine 2.3 WSW 10.7 in 0700 AM 01/29 42.71N/87.85W 1 SW Franksville 10.5 in 0726 AM 01/29 42.74N/87.93W 1 SSE Sturtevant 10.0 in 0719 AM 01/29 42.69N/87.90W Union Grove 9.0 in 0800 AM 01/29 42.70N/88.03W Rochester 9.0 in 0614 AM 01/29 42.74N/88.22W 4 NE Union Grove 8.5 in 0744 AM 01/29 42.73N/88.00W Racine 5.9 N 8.2 in 0726 AM 01/29 42.81N/87.81W Racine-Sewage Plant 8.0 in 0800 AM 01/29 42.68N/88.20W Racine 1.4 NNW 7.5 in 0500 AM 01/29 42.75N/87.82W Rochester 1 S 7.0 in 0800 AM 01/29 42.73N/88.23W ...Rock County... 3 E Edgerton 8.8 in 0700 AM 01/29 42.84N/89.01W Janesville 7.5 in 0928 AM 01/29 42.68N/89.02W Janesville 3.1 W 6.9 in 0700 AM 01/29 42.68N/89.08W Beloit 0.7 ESE 5.3 in 0700 AM 01/29 42.52N/89.01W Beloit 3.3 E 5.2 in 0700 AM 01/29 42.52N/88.96W Argyle 4.1 in 0700 AM 01/29 42.70N/89.02W ...Sauk County... 4 SSE Lime Ridge 3.5 in 0645 AM 01/29 43.40N/90.12W Reedsburg 1.3 N 2.5 in 0810 AM 01/29 43.55N/90.00W 1.0 S Reedsburg 2.0 in 0800 AM 01/29 43.52N/90.00W ...Sheboygan County... Random Lake-CoCoRaHS 3.8 in 0700 AM 01/29 43.55N/87.95W Sheboygan 0.7 SSW 3.8 in 0700 AM 01/29 43.74N/87.73W Sheboygan 3.2 NW 2.0 in 0700 AM 01/29 43.78N/87.77W ...Walworth County... Lake Geneva 0.6 ENE 9.0 in 0645 AM 01/29 42.59N/88.42W Mukwonago 3.4 SW 8.2 in 0600 AM 01/29 42.84N/88.39W 8 SSE Whitewater 8.0 in 0905 AM 01/29 42.74N/88.66W Fontana 0.3 SSE 8.0 in 0700 AM 01/29 42.54N/88.56W Elkhorn 1.1 WSW 7.0 in 0700 AM 01/29 42.67N/88.56W Elkhorn 5.3 N 6.7 in 0700 AM 01/29 42.75N/88.55W Troy Center 1.1 WNW 6.5 in 0700 AM 01/29 42.82N/88.49W Elkhorn 0.4 ESE 5.4 in 0530 AM 01/29 42.67N/88.53W ...Washington County... 1 SSE Germantown 8.3 in 0754 AM 01/29 43.22N/88.11W Hubertus 7.0 in 0912 AM 01/29 43.24N/88.22W Germantown 0.6 S 5.7 in 0700 AM 01/29 43.23N/88.12W Slinger 1 WNW 5.0 in 0700 AM 01/29 43.33N/88.30W Jackson 0.9 SSE 5.0 in 0600 AM 01/29 43.31N/88.16W 0.7 SW Hartford 4.1 in 0625 AM 01/29 43.32N/88.40W ...Waukesha County... 1 SW Delafield 10.3 in 0935 AM 01/29 43.06N/88.41W Nashotah 10.0 in 0936 AM 01/29 43.10N/88.41W Dousman 4.6 SSW 10.0 in 0700 AM 01/29 42.95N/88.50W 1 WNW Muskego 9.8 in 0747 AM 01/29 42.90N/88.14W North Prairie 9.4 in 0923 AM 01/29 42.94N/88.40W Oconomowoc 9.3 in 0753 AM 01/29 43.11N/88.50W Oconomowoc 0.9 W 9.3 in 0752 AM 01/29 43.10N/88.51W 2 WNW Hales Corners 9.3 in 0723 AM 01/29 42.95N/88.09W 3 ESE Waukesha 9.1 in 0700 AM 01/29 42.99N/88.19W New Berlin 9.0 in 0749 AM 01/29 42.98N/88.12W 4 WSW Waukesha 9.0 in 0729 AM 01/29 42.99N/88.30W 1 NNW Waukesha 8.5 in 0908 AM 01/29 43.03N/88.25W 2 SE Waukesha 8.5 in 0755 AM 01/29 43.00N/88.22W Pewaukee 3.2 W 8.4 in 0700 AM 01/29 43.09N/88.31W Muskego 1.0 W 8.3 in 0746 AM 01/29 42.89N/88.14W 1 NNW Muskego 8.3 in 0530 AM 01/29 42.90N/88.13W New Berlin 3.4 NE 8.1 in 0700 AM 01/29 43.01N/88.08W Waukesha 1.6 SE 8.1 in 0700 AM 01/29 43.00N/88.21W 1 SSW Pewaukee 8.1 in 0645 AM 01/29 43.08N/88.26W 1 WSW Butler 8.1 in 0627 AM 01/29 43.10N/88.09W 1 ESE Chenequa 8.0 in 0931 AM 01/29 43.12N/88.36W Muskego 1.0 NNE 8.0 in 0800 AM 01/29 42.91N/88.12W Mukwonago 5.3 W 7.6 in 0700 AM 01/29 42.85N/88.44W Brookfield 7.5 in 1007 AM 01/29 43.06N/88.12W 2 SE Waukesha 7.5 in 0723 AM 01/29 42.99N/88.22W Waukesha 1.6 NW 7.5 in 0700 AM 01/29 43.03N/88.26W Hartland 5.0 NNE 7.5 in 0629 AM 01/29 43.16N/88.30W 1 E Merton 7.2 in 0830 AM 01/29 43.15N/88.29W 1 ENE Merton 7.1 in 0820 AM 01/29 43.14N/88.29W 2.9 W Brookfield 7.0 in 0820 AM 01/29 43.05N/88.18W Muskego 3.7 SW 6.9 in 0700 AM 01/29 42.85N/88.18W Menomonee Falls 3.2 NNW 6.9 in 0700 AM 01/29 43.19N/88.16W 2 SE Big Bend 6.9 in 0600 AM 01/29 42.85N/88.18W Oconomowoc Lake 1.8 S 6.5 in 0800 AM 01/29 43.07N/88.45W 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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