A winter storm is expected to bring 7 to 15 inches of snow to Chicago from Sunday night into Tuesday, with lake-effect snow causing variable accumulation and significant travel disruptions, including flight cancellations at O'Hare and Midway airports.
Parts of the Chicago area and northwest Indiana are expected to receive several inches of snow from a lake-effect snow band from Sunday evening into Monday morning, with a Winter Storm Watch in effect and potential for hazardous travel conditions during the morning commute.
Rochester, NY is experiencing a cold spell with snow showers expected from Wednesday night into early Thursday, accumulating up to an inch. Lake effect snow will intensify Thursday, with potential accumulations of 1-3 inches, and localized areas possibly seeing 3-6 inches by Friday. Temperatures will remain cold, with highs in the 20s and wind chills in the single digits. A warm front will raise temperatures above freezing by Sunday, reaching into the 40s by Tuesday.
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Upstate New York is expected to experience repeated snow showers through midweek, potentially accumulating a foot or more in some areas, with higher elevations likely to receive the most snow. Fluctuating bands of lake effect snow are anticipated, with a winter weather advisory in certain counties. Temperatures will fluctuate from the low 30s at night to the low 40s during the day, following an unusually warm March.
A snow system moving through Michigan is expected to bring light snow to the southern half of Lower Michigan, with heavier lake-effect snow in the southwest and the Upper Peninsula. Additional snowfall of 4 to 12 inches is forecast for Berrien County, while the shoreline from Leelanau County south to Pentwater may see up to 6 inches of localized heavy lake-effect snow. Cold air will dominate today, leading to a very cold Saturday, but a significant warm-up is expected starting Sunday and lasting into next week.
Watertown, New York experiences continued snowfall and slick roads as a lake effect storm persists, leading to crashes and travel advisories in Jefferson and Lewis counties, with 50 cancellations reported.
The city of Buffalo is racing to clear snow-covered streets before more snow arrives, with a travel advisory in place and emergency warming shelters open. Mayor Byron Brown urged residents to be patient as crews work to clear the snow, and the Department of Public Works is preparing for the upcoming snowfall. Trash pickup will be delayed by one day, and the city has taken extra efforts to clear the streets, utilizing private contractors to clear main and secondary streets simultaneously.
The lake effect snow warning has been expanded to include Onondaga County, including Syracuse, with the potential for 5 to 9 inches of snow from tonight through Wednesday morning. The heaviest snowfall is expected on Tuesday afternoon and night, accompanied by strong winds gusting up to 35 mph. Travel may be difficult, and the morning and evening commute could be impacted.
West Michigan is expected to experience its first widespread several-inch snowfall on Sunday, with lake enhancement likely in certain areas. A "Colorado low" system will move into the Great Lakes, bringing snow to the region. By Sunday evening, a widespread 1 to 2 inches of snowfall is expected, with 2 to 4 inches possible in lake-enhanced areas. Road conditions may become slick due to the snow sticking to roadways. Lake-effect snow may also occur after the system departs, potentially adding 1 to 3 inches in some areas. Cold and unsettled weather will persist throughout the week, with periodic chances of light snow or rain showers. A warm-up is expected in the first week of December.
A low-pressure system moving through the Great Lakes region will bring snow showers to Michigan starting Saturday night and continuing into Sunday. Most areas will see 1 to 2 inches of snowfall, with some isolated areas receiving less than an inch. Lake enhancement near Lake Michigan and eastern Lake Superior could lead to increased snowfall totals, with 3 to 4 inches possible in western Lower Michigan. Travelers should exercise caution due to potential slick spots on roadways. Lake effect showers may persist on Monday.
West Michigan is expected to see accumulating snow on Sunday, with lake effect snow continuing into Monday and Tuesday. The heaviest snowfall is likely to occur on Sunday afternoon, potentially causing minor travel impacts. Temperatures will drop below freezing overnight, creating slick spots. Additional snow accumulation is expected next week due to lake effect snow. High temperatures will only reach the 30s, with overnight lows in the 20s, making it feel even colder.
The first flakes of the season are expected to fall in Rochester, New York, with a chance of rain showers on Halloween night. Higher elevations south of Rochester have the best chance of seeing snow before midnight, while a fast-moving band of lake effect snow is expected on Wednesday morning. Snowfall amounts will likely be minimal, with up to 1/2" possible on elevated surfaces and areas east of Rochester. The ground is not yet frozen, so snow accumulation is unlikely to last long.
Rain will gradually shift south and out of Michigan, with steady rain expected in southeastern parts of the state while other areas see the rain taper off. As the storm moves east, another batch of rain will form due to the lake-effect process. The radar forecasts show a gradual tapering down of the first rain and an increase in the second rain area. Additional rainfall is expected in the Detroit and Ann Arbor areas, while most of the meaningful rain is done for the day in other parts of Michigan.
A cold front will bring snow showers to the Valley with the possibility of heavy snow and gusty winds. Accumulations should stay light through the afternoon and into the evening hours. Later tonight, a lake effect snow band will form off of Lake Erie, with snowfall accumulations of 1-2" possible along and north of I-80 overnight into the early morning hours on Sunday. Temperatures will drop into the upper teens and low 20s, but the weather will improve by Monday with mostly sunny skies and highs in the 50s.