October 29, 10:30 PM Weather Forecast Update

Here is the latest on the powerhouse storm system ahead.

Posted: Oct 29, 2019 9:19 PM
Updated: Oct 29, 2019 10:46 PM

Up to 4" of snow fell in northern Illinois & southern Wisconsin last night!

This shot is from near Freeport, Illinois this morning!

Rain arrives tonight & mixes with some snow from northwestern Benton, across Newton, Jasper & into western Pulaski counties.

It is possible that it goes briefly to all snow in a few pockets in Newton & Jasper County.

Our lows tonight will run from 34 in the northwest to 41 in the southeast & around 37-39 across Greater Lafayette with northeast winds increasing to 10-25 mph (dropping wind chills into the 20s to around 30).

Note how close the sharp 2" snow cut-off gets to northwestern Newton County! 

It could snow heavily in central Illinois at 1" per hour tonight-early tomorrow morning with temperatures around 32.  A band of 1.5-4" will occur, but a broken narrow band of +4" may occur, as well.

Tomorrow looks rainy & blustery with 38-45 for highs with northeast winds at 15-25 mph dropping wind chills to 30-37.

Steady rain for much of the day should become more showery in the evening.

Steady rain returns tomorrow night (isolated thunder possible), while all-out winter storm occurs from Missouri & eastern Iowa to western & parts of central Illinois to Wisconsin with wind-driven snow & even a band of sleet & freezing rain.  Given foliated trees adorned in their peak fall color, tree damage is likely there with that ice (& the snow).

Our temperatures should be pretty steady at 38-46 (if not rise to 40-49) with strong northeast to east winds at 15-25 mph at the onset of the night, decreasing to 4-8 mph for a while.  Despite, moderate rainfall rates, this decrease in the wind may allow some locally-dense fog to form for a few hours.

Thursday looks showery here with our highs of 41-51 occurring in the first half of the day, followed by pretty rapidly-falling temperatures.

Storm system will begin to rapidly deepen as it pivots through our area.

Winds will really begin to increase with time Thursday with a turn to the northwest, west, then southwest as the cold, cold air wraps around system & comes in from the west & southwest.

If you are prone to aches & pains Thursday will not be a good day.

Showers should go to all wind-driven snow showers Thursday afternoon-evening to the night-time hours.

Winds may gust +40 mph (isolated +50 mph) with sustained winds at 25-35 mph. 

The freezing line (32) will rapidly wrap in & rush in from the west & southwest, reaching US 41 by 5 p.m., then overspread the 231 corridor by 6:30 p.m.

The entire area should be 30-32 by 9 p.m.

Wind chills will drop to 16-25!

By 2 a.m., temperatures should be 26-29 with wind chills of 11-18!

It appears that the grass & elevated surfaces may be dusted to whitened in our area.

Up to 1" of snow may accumulate in Newton & Jasper counties with more like trace to 0.5" elsewhere.

Despite warm ground & pavement temperatures, with lows of 24-27 by Friday morning, a few slick spots on roadways may develop.

This will mainly occur on bridges & overpasses & be some minor slushing & water freezing.

Wind chills Friday morning may run 10-15 with west-northwest winds still at 15-30 mph.

Impressive early-season snowfall is possible west & northwest of our area with a large swath seeing +6".  This, with the wind, means considerable tree damage risk (with fully-foliated trees).

This is impressive glaze ice accumulation for this time of year!  A narrow band of up to 0.10" of ice is possible!

Check out the QLCS squall that really organizes as the low reapidly deepens Thursday.

That line looks to have cores of damaging straight-line winds & even some brief tornadoes.  Risk will run from New York state to Georgia.

Ahead of this QLCS, temperatures will surge to 70 to as high as 80 overall from New England to the Southeast.

It is one strong cold front.  At 10 p.m., temperature may be 74 at Washington D.C. & 35 in western Maryland.

Places like Savannah, Georgia may go from 83 to 55 with passage of the front (as the squall line passes).

Long QLCS squall line goes all the way to Ontario & Quebec as low's surface pressure tanks to 988 mb.

Temperatures may surge to around 70 as far north as northern Vermont, New Hampshire & Maine early Friday morning.

A total of 1-2" of precipitation is likely for our area now-Thursday night (includes melted snow).

Friday looks brighter, cold & breezy with highs 38-45, followed by 20s Friday night.

Shortwave & secondary cold front will bring clouds & a few isolated rain & snow showers Saturday (with gusty southwest to west, then northwest winds).

Highs Saturday may only run 37-44 with wind chills 27-34.  In the morning, if you are tailgating Saturday, wind chills may run 14-19.

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Rain is likely for most of the day with cooler and windy conditions
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