Storm Continues to Organize & Strengthen……..Track & Timing Still Look Good with Biggest Impact Tomorrow Night

December 19th, 2012 at 9:59 pm by under Chad's WLFI Weather Blog

UPDATE:  Projected peak gusts late Thursday to Friday from storm………..& updated snowfall map.

Scattered showers with isolated thunder continue to blossom across the area with slowly-rising temperatures.  We are at our high today of 44.0 degrees as of 10 p.m. at WLFI. 

Major winter storm continues to organize & strengthen as moisture surges northeastward & very potent upper & subtropical jets interact.  Further jet energy in the Rockies will continue to strengthen (deep) storm as it move towards central Illinois by tomorrow.  Surface pressure will drop to equivalent of Category 2 hurricane at 979 mb by tomorrow (near Chicago).

Here, forecast looks about the same (just very small tweaks to snowfall); showers/t’storm, band of rain/few t’storms, increasing wind, rising temperatures tonight-tomorrow morning.  Then, bit of dry slot, followed by high winds, tanking temperatures & a period of snow with around 1″ to as much as 2-3″.  Wind chills will drop below zero by Friday morning with lots of blowing & drifting snow (even if it is only 1″ to as much as 2-3″).  Wind gusts of 45-55 mph are likely tomorrow evening-tomorrow night.  The worst impacts with wind & snow will be tomorrow night around here.

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