Winter weather advisories will be running tonight and tomorrow for the majority of Wisconsin, but it does not include Green, Rock, or Walworth County. These counties highlighted in light blue could shovel between 3 and 6 inches of snow. I slightly tweaked Justin's snowfall forecast from last night by pushing the contours northward by about 40 miles. The most recent update is on the right hand side of the screen. This puts most of the Stateline in the 1-3" range with most spots along I-88 receiving less than an inch.
The reasoning for the low snow totals goes like this. The center of spin is going to be passing almost directly overhead. Our biggest snows occur when low pressure slides through central Illinois, but this one will travel pretty close to I-88. That means that there should be enough warm air wrapped into this system tonight to cause a mixture of rain and sleet as well as some snow. Remember that anytime we witness a period of rain or sleet it zaps the potential amount of moisture in the atmosphere significantly.
Further justification comes from the fact that the heaviest precipitation typically falls ahead of or just north of low pressure. By the time our precipitation changes into all snow the low will have pulled off to the east. Wrap around snow is quite likely tomorrow, but we normally don't get dumped on with wrap around precipitation. -ADAM
5 comments:
Do you think we will get an advisory for blowing and drifting?
Tough call, the wind criteria will likely be met, but the visibility level might not be low enough. The snow that does fall is going to be the relatively heavy, wet variety. Without the fluffy type snow, blowing and drifting may be limited.
Thanks for the update -- how are the totals for the year? Any chance of hitting that record?
David
Does the snow for Friday PM/Sat. look like anything to be concerned about.
I think eric said earlier it could be a 3-6 incher. Eric, has anything changed with that or does that still look likely.
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