Weekend Weather Update

It was a warm and windy day in the Quad Cities as a warm front lifted northward, ushering in winds of 20 to 30 mph with temperatures in the low 60s and dewpoints in the 50s!  When it's that warm and dewpoints are that high in November, something's up.  That something is a very strong, tightly-wound low pressure system (developing in Colorado Sat. night) with a cold front that will move through late Sunday morning/early afternoon.

Throughout Saturday night we'll see a piece of energy from the low level jet stream push in from the south west that will increase showers & t'storms after midnight.  SPC has the QCA under a slight risk for golfball size hail and high winds late tonight into tomorrow morning.  As the cold front moves through by midday Sunday, the severe threat shifts east where conditions are more favorable for severe weather.  Here are a couple screen shots of simulated radar reflectivity from the RPM model.

Effective 5am--model shows storms entering southern hometowns

Effective 1pm Sunday--cold front moves off to the east taking severe threat with it

Main QC threats: Strong winds & hail.  Isolated tornado can't be ruled out.  Greater tornado threat East

Once the cold front moves through, we could possibly see a few wrap-around showers in the afternoon hours, but the big stories tomorrow afternoon will be the falling temperatures (low 60s early--into the 40s by late afternoon) and very strong winds.  As I mentioned, this is a very tightly packed system, so as it treks east we'll see sustained winds from the WNW 25-35 mph, and could see gusts 40-45 mph+ at times.
For that reason, a Wind Advisory runs from 10am to 6pm.

Sunday 11/17

As always, you can watch the latest loop of the HD Radar with warnings at www.whbf.com/weather!
Stay weather aware.  Now might be a good time to download the CBS4 ap!