Thursday, February 9, 2012

SNOW UPDATE

*Mid-Evening Update* - The forecast basically still looks on track from my last post. A winter weather advisory is in effect for southern Indiana and much of Kentucky. This isn't because higher totals are expected there, it's because those counties are under a different criteria level for advisories. For Indy, the NWS only issues an advisory if at least 3" is expected. For southern Indiana, 2" can qualify for an advisory event. Here is the latest advisory outline:



The only change to the forecast, is that I think much of the state is going to have an all snow event, with a mix possible southwest of Bloomington/Terre Haute line tomorrow. The snow will begin by middle/late morning hours, and will fall steady during the afternoon and evening! Even with temperatures in the 32-34 degree range, the upper-levels will be well below freezing. Notice how much of the state stays in the blue (snow) tomorrow afternoon.




BOTTOM LINE: The snow begins after the morning commute, more likely between 11am-1pm. The snow will fall steady, but mainly light tomorrow afternoon and evening. Temperatures will be key on how much sticks! My gut tells me that once the snow begins to fall, it can cool down the atmosphere, and cause our temps to hover around 32-33 tomorrow afternoon. By the evening rush hour, a coating-1" of snow will have already fallen. As our temperatures drop throughout the evening, the snow will stick to the roads after sunset, and leftover wet roads will become icy. Roads WILL be hazardous tomorrow evening. Here is a map of expected snow totals when we wake up Saturday morning.



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