Think the pattern is getting colder and more active ??? check out the latest US advisory map...
Those are blizzard warnings in red !!!
This week's weather will be highlighted basically by two, fast-moving clipper systems. Put your weather history hats on... if you recall, these systems typically don't bring us a lot of snow, but they can, and occasionally do, bring us a lot of wind and cold temperatures. It looks to me that this week's clipper systems will do the same....
The first clipper sfc low pressure will pass well north of our region - up across northern IL, northern IN etc... Along and north of this track is where the best snows will occur - as is the case with any clipper system. The thing that's a bit different with this one is that there will be a trailing / southern moving vort lobe that will likely cause enough lift even south of the main clipper to bring us a period of light precip late tonight into tomorrow morning.
Looking at the thermal profile, it appears there may be a little too much warm air in the lowest levels for all snow (which makes perfect sense considering where the main sfc low is tracking allowing for the low level WAA over us tonight). Having said that, both the NAM and GFS profiles would suggest a mix (or even all rain) to start and then ending as some light snow and flurries - taking this scenario... little / no accum expected. But I'll take a closer look at the thermal profile as the day wears on.
Temperatures will get pretty cold behind this one and steadily drop into the 20s with gusty winds expected.
The second (and stronger of the two) clipper system will pass through the region later Wednesday into Wednesday night. The sfc low with this clipper will also pass well north of us. Again, that means the best accumulating snowfall will be well north of us.
For us, this system will mean a lot of wind as strong WAA takes place Wednesday afternoon and then very strong CAA Wednesday night behind the arctic boundary. Yes, it looks like there will be some light snow and flurries located in a narrow band along and just behind the arctic front. Certainly not a lot, but perhaps enough for a light coating. Of course the big weather story with this second clipper for us will be the very cold air that spills in behind. Temperatures will likely fall into the single digits by Thursday morning and only hold in the teens for Thursday. If (and I mean IF) there is a light coating of snow on the ground, it's likely we'll see tempweratures drop to near zero or below for Thursday night / Friday morning... Brrrrrrrrrrrrrrrrrr get ready all - it's going to be a cold few days.
Weather History:
12 January 1928 → A small tornado struck Louisville, causing $89,000 in property loss
(Andew Wilson)
1985 - A record snowstorm struck portions of western and south central Texas. The palm trees of San Antonio were blanketed with up to thirteen and a half inches of snow, more snow than was ever previously received in an entire winter season. (Weather Channel) (Storm Data)
Have a great day all,
Jay
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