#ILWX #INWX #OHWX Acc. Snow Forecast W/ Long-Range Video.

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Video forecast analysis:

Forecast Discussion:

EVENING – TONIGHT: High pressure remains in place across the forecast region today. While this has allowed for partly to mostly sunny conditions across most of the region it has also kept temperatures very cold! Currently temperatures are in the single digits and teens across the region with wind chills below zero in many locations.

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The area of high pressure will remain in control of our weather through the overnight hours. Consequently this will allow for temperatures overnight to fall back near zero to low teens. Wind chills overnight night will continue to make it feel like it’s below zero.

TUESDAY – WEDNESDAY: The area of high pressure will move off to the east through the day tomorrow and clouds will increase ahead of an approaching area of low pressure. While most of the daytime hours on Tuesday look dry, we will watch snow creeping into western portions of Illinois after 5-6 PM. ThIs snow will be associated with the clipper system that will move through the region.

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Highs on Tuesday will be in the teens north to mid 20’s south.

Snow will continue to move across Illinois through the evening hours Tuesday overspreading the state. By 12-1 AM Wednesday morning, snow, some heavy at times, will be occurring across Illinois and along the IN/IL state line.

WED1AM

Snow will progress east across Illinois and into Indiana through the overnight hours. Current timing looks to put snow in the Indianapolis metro around 3-4 AM Wednesday morning. Current forecast models would suggest the heaviest snow would be occurring across southern zone 1/7 and zones 5/6 at this point in time, although periods of heavier snow will be possible north as well.

By 7-8 AM Wednesday morning snow will be ongoing across southern Illinois, Indiana, and starting to enter western Ohio. It is possible snow will be starting to come to an end across northern zone 7 as well.

WED7AM

Lows Tuesday night will be in the teens to mid 20’s. Perhaps even warming slightly across the southern zones.

Through the morning hours on Wednesday snow will work southeastward across Indiana and into Ohio. It appears by mid-day the main area of snow will be coming to an end across Illinois with only some light snow showers or flurries left behind.

WED11AM

The clipper system and snow will move to the east and southeast through the afternoon. Current timing would suggest the main area of snow will end by 2-3 PM Wednesday afternoon. However, some remaining light snow showers and flurries can’t be ruled out.

WED4PM

The latest models bring the heaviest snowfall from the I-70 area southward. There are still a lot of things that need ironed out with this system and a shift to the north wouldn’t be a total surprise, so make sure to check back for the latest regarding this system.

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NAM 12 km

 

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GFS

Highs on Wednesday will be in the low 20’s north to mid 30’s south.

Through the evening into the overnight Wednesday the upper air soundings do show some saturation at the very low-levels of the environment. So some overnight snow showers or wintry precipitation may remain possible, that’s something we will have to watch as we get closer to Wednesday night.

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Lows Wednesday night will be in the mid-teens and 20’s.

THURSDAY – FRIDAY: Thursday an area of high pressure will build in behind the clipper system. This will keep conditions dry and calm for most, if not all of the day on Thursday.

Highs will be in the mid 20’s north to mid 30’s south.

Late Thursday night into the overnight hours we will be watching a larger area of low pressure move closer to the region. While models have been inconsistent with the overall track of this storm it does bear watching because if it does shift north, snow will be back into the forecast late Thursday.

Friday we will continue to watch the area of low pressure to the regions south. While the latest EURO does bring snow into southern Indiana through the day Friday. However, the past runs of the EURO and current runs of other models have different solutions. We will have to fine-tune that forecast as we get closer to that forecast period.

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SATURDAY: While that system will be to the regions east by the time get into the weekend, an upper level disturbance will be moving across the region. With that mind, some snow showers could remain possible through at least early Saturday morning.

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