All Hazards NOAA Weather Radio | Live Chicago Weather Updates
Snow potential over the next 7 days: 90% (↑)
Temperatures plunged with rain changing over to all snow over the region on Tuesday, after high temperatures topped out in the upper 30s/lower 40s during the early morning hours. Anywhere from 1-4” of snow fell with the highest amounts falling north near the Illinois/Wisconsin border. Below is a list of Tuesday’s snowfall totals across the region:
- 3.7″ Rockford
- 3.0″ Beloit, WI
- 2.5″ Mount Morris
- 2.3″ Milwaukee, WI
- 2.3″ Capron
- 1.5″ Dixon
Colder air arrives tonight, light snow Thursday, heavy snow possible Friday
Overnight lows bottomed out in the teens with the help of clear skies and the additional snow cover. High temperatures today will struggle to make it out of the 20s in most locations. But the real cold air will arrive late tonight through Thursday night. A stronger reinforcement of Arctic air will swing into the region with temperatures falling from the teens Thursday morning/afternoon into the single digits Thursday night. Wind chill values early Thursday could range from 5 to 15 degrees below zero in areas well inland. Although, winds by Thursday night will be light, wind chills will likely fall below zero in a few locations. In addition very cold air on Thursday will be the potential for snow on Thursday. A clipper system will bring light snow to the region during the day on Thursday. While monitoring the potential for very cold air and light snow on Thursday, I am monitoring the possibility of significant snowfall on Friday. An immense winter storm is bearing down across the Pacific Northwest with heavy snow. Energy (in the form of snow) from this winter storm will eject eastward from the Northwest U.S. to the Midwest and Great Lakes regions Friday/Friday night. Liquid to snow ratio suggest snowfall totals (preliminary) of at least 3 inches could fall over the area Friday with the highest amounts falling north of Interstate 88.
The development of a Greenland Block and what that could mean?
Beyond Friday, am monitoring another weather feature that could suppress a significant warm up that was to bring 40s and 50s around here this weekend into early next week. Models this weekend and earlier this week have been indicating a significant warm up Saturday through at least Monday of next week. However, there appears to be some showing signs of a slight blocking pattern that is to develop late this weekend into early next week, something that has been non-existant this winter and partly explains our mild winter. If this Greenland Block develops, this will suggest a moderately mild airmass rather than a significant warm up that was predicted over the northern half of the nation this weekend and early next week. Though the big warmup may hold off for a little bit, temperatures will be above the freezing mark this weekend. Beyond Tuesday of next week, it appears that an even warmer airmass will invade the region especially Thursday and Friday of next week.
Wednesday: Mostly sunny and cool. Clouds increase late. Highs in the mid to upper 20s. Winds southwest 10-20 mph becoming west-northwest late.
Thursday:Mostly cloudy with light snow developing in the morning. Highs in the lower 20s. Winds northwest 10-20 mph.
Friday:Snow likely. Snow accumulations over 3 inches possible. Highs in the lower 20s. Winds north becoming west-southwest 5-15 mph.
Saturday: Mostly sunny and slightly warmer. Highs in the mid to upper 20s. Winds north-northeast 5-15 mph.
Sunday:Increasing clouds and slightly warmer. Slight chance for snow in the evening. Highs in the lower 30s. Winds south-southeast 10-20 mph.
Monday:A chance for light snow. Highs in the lower 30s. Winds west-northwest 10-20 mph.
Tuesday:Partly cloudy. Highs in the upper 20s to lower 30s. Winds northwest 5-15 mph.
8-15 day outlook (Long-range Forecast)
Wednesday Jan 25: Highs in the 30s.
Thursday Jan 26:Highs in the 30s/40s.
Friday Jan 27:Highs in the 40s.
Saturday Jan 28:Highs in the 40s.
Sunday Jan 29:Highs in the 30s.
Monday Jan 30:Highs in the 30s.
Tuesday Jan 31:Highs in the 30s.
Wednesday Feb 1:Highs in the 30s.
Thursday Feb 2:Highs in the 40s.
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