Model guidance continues to remain very consistent on some pretty warm temperatures across the Midwest today and tomorrow, including here in Illinois with some areas even getting near and beyond 70 degrees both days! The bad news is this will not be a long lasting warm-up as colder temperatures will return to the region to end the week on Friday. Even so, we hope most can get out and enjoy a few days of warm temperatures!
A brief update follows below....
As mentioned in the previous article regarding this warm-up across the region, the upper level ridge will be perfectly centered over us here in Illinois and portions of the Midwest by this afternoon and this is usually a favorable large scale pattern for above normal temperatures across our area. This will be possible thanks in part to a very strong storm system developing across the central plains this morning and afternoon, allowing for the building upper ridge (in dashed red) across the Midwest and eastern US.
As the area of low pressure rapidly strengthens to our west across the central plains today, low level winds will also be on the increase across portions of the Midwest and into our area across Illinois. This strong low level flow will act to advect the warmer temperatures northward through the day today.
For daytime highs today, expect much of the state to get into at least the low 60's with areas downstate getting into the mid to upper 60's. The only cool spot looks to be far northern Illinois near the Wisconsin border. This area could remain in the mid to upper 50's as the warmer air will have a longer trek to make it that far north. Either way, expect a warm and windy day today across the state.
The day with the warmest temperatures will be on tomorrow as this is when a larger area of the state, favoring portions of central and southern Illinois will get into the low to possibly mid 70's. Also, you can see some cooler temperatures across the west central part of the state and this will be due to the eastward moving cold front that will come through the state during the mid-late afternoon hours from west to east. This will mean places from Chicago to Champaign down into southeast Illinois will stay the warmest the longest.
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