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Dec 11-13 MW/Lakes/OV Snow Event? Part V


Chicago Storm

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Welp, can't attach multiple files, so it'll have to be one at a time. I don't remember one like this. The Halloween blizzard was a longer duration event with not as much wind on the back side. This is all powder and yet the accumulations are ridiculous. I'll let the pictures do the talking. For reference, the hot house next to which the kids are standing is 6 feet high...

post-1834-0-52995900-1292117673.jpg

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The state Department of Transportation declared Saturday night that an almost 150-mile stretch of I-94 between Tomah and Hudson was impassable after heavy snow pummeled the area for much of the day.

Although the interstate was not closed, the declaration of it being impassable means that motorists should exit and find safe shelter for the night, according to the department.

At the Wisconsin State Patrol Northwest Region Eau Claire post, Lt. Jeff Lorentz said that there were too many accidents to count and that hundreds of cars were in ditches. Authorities were having difficulty getting some people from their cars.

"It's a rough situation," said Lorentz, adding that since the snow started falling shortly after midnight. The area now has about a foot of accumulation, and Lorentz said the total would reach 18 inches before it's over.

"Our biggest concern now is the dropping temperatures and the winds," he said.

http://www.jsonline.com/news/wisconsin/111730344.html

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193

FXUS63 KDVN 120142

AFDDVN

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE QUAD CITIES IA IL

741 PM CST SAT DEC 11 2010

UPDATE

WINTER STORM EVOLVING SIMILAR TO CURRENT FORECAST...WILL BE

MAKING MINOR CHANGES TO THE FORECAST. SNOW AMOUNTS SLIGHTLY

REDUCED OVERNIGHT AND SUNDAY MORNING FOR ADDITIONAL ACCUMULATIONS

OF A POWDERY 2 TO 5 INCHES...THIS WILL BE EASILY BLOWN IN THE

STRONG WINDS LATER TONIGHT AND SUNDAY.

STRONG WINDS AND BLIZZARD CONDITIONS ARE ON TAP TO ARRIVE IN NW

SECTIONS OF FORECAST AREA AROUND 9 TO 10 PM. THIS WILL SPREAD

SOUTHEAST ARRIVING IN THE GREATER QUAD CITIES AREA BETWEEN

MIDNIGHT AND 2 AM AND THE EXTREME SE SECTIONS BETWEEN 3 AM AND 5 AM.

ALL AREAS WILL EXPERIENCE 12 HOURS OR MORE OF WINDS 30 TO 50 MPH. LATEST

SFC OBSERVATIONS THE PAST 3 HOURS ARE CONFIRMED IN LATEST UPPER AIR

DATA JUST NOW COMING. PER LOCAL STUDIES...TECHNIQUES AND CALCULATIONS...SOME

GUSTS WILL REACH 55 MPH ACROSS THE REGION. THERE REMAINS THE

POTENTIAL FOR A FEW GUSTS AROUND 60 MPH. THE RAIN EARLIER TODAY...THAT

MAY HAVE FROZEN ON ELECTRICAL WIRES COMBINED WITH THE LONG DURATION

OF HIGH WINDS WILL MAKE FOR FAVORABLE SITUATION FOR EXTENDED POWER

OUTAGES. WILL BE EMPHASIZING THIS IN THE LATEST BLIZZARD WARNING

PRODUCT...CHIWSWDVN OVER THE NEXT HOUR.

AGAIN...THIS SYSTEM WILL PRODUCE VERY DANGEROUS CONDITIONS OVER

THE AREA THE NEXT 24 HOURS.

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The obs out of Iowa make me jealous!

NORTHWEST IOWA

CITY SKY/WX TMP DP RH WIND PRES REMARKS

CARROLL * HVY SNOW 12 9 85 NW43G54 29.82R VSB<1/4 WCI -12

CHEROKEE * LGT SNOW 10 9 92 N25G40 30.00R WCI -10

DENISON * HVY SNOW 14 9 79 N30G45 29.95R VSB<1/4 WCI -7

LE MARS * LGT SNOW 9 5 85 N24G33 30.10R VSB 1 WCI -12

ORANGE CITY * CLOUDY 9 3 78 N26G36 30.05R WCI -13

SHELDON * HVY SNOW 7 3 85 N35G47 30.05R VSB 1/4 WCI -18

SIOUX CITY SNOW 7 4 87 NW39G52 30.08R VSB 1/4 WCI -19

SPENCER BLWGSNOW 7 4 87 N37G53 29.97R VSB 1/4 WCI -18

IAZ055>058-069>071-079>083-090>094-120200-

SOUTHWEST IOWA

CITY SKY/WX TMP DP RH WIND PRES REMARKS

CLARINDA * SNOW 14 10 85 NW28G38 29.84R VSB 1/2 WCI -6

COUNCIL BLFS * MIX PCPN 12 7 79 NW26G44 29.94R VSB 1/2 WCI -8

CRESTON * HVY SNOW 14 9 79 NW41G52 29.70R VSB 1/4 WCI -10

HARLAN * HVY SNOW 18 14 86 NW41G54 29.92R VSB<1/4 WCI -5

LAMONI LGT SNOW 16 12 84 NW33G45 29.64R FOG WCI -5

RED OAK * SNOW 14 10 85 NW26G37 29.87R WCI -6

SHENANDOAH * LGT SNOW 14 9 79 NW22G41 29.92R WCI -4

IAZ047>049-059>061-072>074-084-120200-

CENTRAL IOWA

CITY SKY/WX TMP DP RH WIND PRES REMARKS

AMES SNOW 24 21 88 N38G53 29.63R VSB 1/2 WCI 5

ANKENY * LGT SNOW 25 25 100 N32G45 29.61R WCI 7

BOONE * HVY SNOW 18 17 93 N40G52 29.67R VSB 1/4 WCI -3

CHARITON * LGT SNOW 27 23 86 NW20G31 29.56R WCI 13

DES MOINES HAIL 25 19 80 N24G36 29.61R VSB 1 WCI 9

GRINNELL* LGT SNOW 21 19 93 NW5 29.54S WCI 15

KNOXVILLE * LGT SNOW 21 18 86 N14 29.54R WCI 8

MARSHALLTOWN LGT SNOW 27 24 89 N30G39 29.55R FOG WCI 11

NEWTON * LGT SNOW 19 18 93 CALM 29.55R

PELLA * LGT SNOW 19 18 93 NW9 29.55R WCI 9

PERRY * HVY SNOW 21 19 93 NW39G48 29.72R VSB 1/4 WCI 1

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Turning over to snow at some sites in NE IL at 8PM, most south or west of the City.

OHARE LGT RAIN 36 35 96 S8 29.47F FOG

MIDWAY LGT RAIN 37 37 100 S7 29.47F FOG

AURORA LGT SNOW 30 28 92 W23 29.49R FOG WCI 17

LANSING* LGT RAIN 37 36 93 S8 29.47F

JOLIET* LGT SNOW 30 28 93 SW16G25 29.50R WCI 19

WAUKEGAN LGT RAIN 38 35 89 SE10 29.47F FOG

WEST CHICAGO LGT RAIN 35 34 96 S5 29.46F FOG WCI 31

KANKAKEE* LGT SNOW 37 34 87 W18G30 29.50R

WHEELING LGT RAIN 37 34 89 SE8 29.49F FOG

MORRIS* LGT SNOW 30 30 100 W22G31 29.50R WCI 17

LEWIS AIRPORT* LGT SNOW 33 31 95 W18G25 29.47S WCI 21

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