Respectable snowfall Thursday to aid arctic air's arrival here

Snow on the ground: WGN-TV's very own back yard Thursday, Jan. 13, 2005
Snow has all but ended over the Chicago metropolitan area--now arctic
air's settling across the area. In the city1.1" fell Thursday at O'Hare
and 1" at Midway. Radar images and earlier computer model projections
suggest as much as 2-4" may have accumulated in spots--especially
isolated locations southwest of the city. Now, temperatures are
falling--headed below 0-degrees in the coldest outlying areas by Friday
morning and to single digits in city itself as Winter, 2004-05's coldest
air yet takes charge.(Temps are below 0-degrees from much of Montana
eastward across North and much of South Dakota and into Minneosota.
At 3pm, Williston, North Dakota reports a thermometer reading of
-17-degrees and much of North Dakota hosts windchills under -50-degrees.
This is easily the winter's coldest air to date. Afternoon air
temperatures in Canada's Yukon Territory are barbarically cold, hovering
close to 60-degrees below zero--and that's the source region of the
Midwest's weather in coming days!) And, this chill threatens to stick
around in the Chicago area! Frigid readings are predicted to hold firm
into early next week, then moderate closer to seasonable levels Tuesday
and Wednesday. But, importantly, new computer runs suggest a major new
outbreak of bitter air is to dive into the nation's heartland late next
week and the following weekend. This will rapidly erode Chicago's
January, 2005 temperature surplus that has the opening 12 days of the
month ranked 24th warmest of the past 135 years!
Check out the rainfall totals filed by National Weather Service COOP
observers through early this morning.
Rainfall Totals
It's official now in the city, according to veteran Chicago observer
and climatologist Frank WachowskiChicago has never been hit by more rain
in a January over the term of records at Midway Airport (observations
there began in 1928) than has been the case this year. With 4.20" down
through midday, January, 2005 is now the wettest on record at
Midway--and there's more than half the month yet to go!
The flooding in progress along so many area rivers was captured
earlier today by weather observer Mary Anne of Remington, Indiana, who
shares these shots with us. Thanks Mary Anne!
-Tom Skilling, WGN-TV meteorologist


