Eastern Cornbelt:
Warmer temperatures brought freezing rain to central and northern Illinois during the week, with multiple road accidents and school closures reported across central Illinois on Jan. 22. Freezing rain and dense fog were also reported in northern Ohio early in the week.
Similar conditions were reported in central and northern Indiana, with periods of freezing rain and fog early in the week and high temperatures tracking in the upper-40s and 50s by the end of the week, about 20 degrees above average for this time of year. Scattered showers were expected across southern Indiana as the week progressed.
Western Cornbelt:
Temperatures rose above the freezing mark across much of Iowa and Nebraska during the week, a stark contrast to the prior week’s arctic blast. Temperatures in the mid- to upper-30s were common in both states at midweek, but highs were expected to reach the 40s and even 50s in some locations by the weekend.
The mild weather was accompanied by rain and fog as the week progressed, with some areas seeing moderate-to-heavy rainfall, particularly in northern areas of both states.
Mild temperatures were also reported in central and northern Missouri during the week, along with freezing rain that created treacherous road conditions, particularly in the Kansas City area on Jan. 22.
Northern Plains:
Dense fog advisories were posted for central and eastern South Dakota at midweek as warmer temperatures moved into the Northern Plains. Icy roads and fog were also reported across central and southern Minnesota during the week, with highs reaching the upper-20s in northern Minnesota and mid-30s in central and southern areas of the state.
Great Lakes:
A winter weather advisory was in effect for 38 Michigan counties early in the week, with forecasts warning of a wintry mix of snow and freezing rain across the southern half of Lower Michigan. A winter weather advisory was also posted for most of southeastern Wisconsin on Jan. 23 due to a mix of snow, freezing rain, and fog.
Northeast:
A mix of rain, freezing rain, and snow was reported across New England as the week progressed. While parts of Vermont were bracing for up to a quarter-inch of ice by Jan. 26, northern Maine was expecting 4-6 inches of snowfall, with southern New England experiencing mostly rain and temperatures in the mid-30s to low-40s.
Temperatures across Pennsylvania and much of the Mid-Atlantic were expected to reach the mid-50s by the weekend, with up to an inch of rain possible in some locations. Flood advisories were in effect for certain rivers and streams in Pennsylvania as the week progressed.
Eastern Canada:
Multiple rounds of freezing rain were reported in eastern Ontario and southern Quebec during the week, with 5-15 cm of snowfall expected in Trois-Rivieres and Quebec City. The Maritimes also experienced a mix of winter precipitation, with 10-30 mm of rain and up to 15-25 cm of snow reported in some locations.