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December 24-30th Clippers


Chicago Storm

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white Christmas looks legit...with mood setter flakes as the little ones open presents....unless they wake me up at 4:00 am ... in which case there may be some solid SN rockin'....

 

post-5865-0-84616000-1387901008_thumb.pn

 

 

 

*yes it's 20:1 with no compaction... :weenie:

 

I will stick with my 1.5 for ORD and hope for my first "bust too low" of the season

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NAM bufkit for MKE has them pegged at around 13:1 going up to 18:1, there is 0 chance at 30:1 ratios.

 

Yeah I guess I should remember this is WAA snows. That's still pretty good. 

 

1.5-2.5" north of the border, and 2-4" south of the border for the p n' c's.

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Chicago

 

PAIR OF UPPER LEVEL DISTURBANCES EVIDENT ON WATER VAPOR IMAGERY THIS
AFTERNOON...THE FIRST TRANSLATING EAST ACROSS NEBRASKA...WHILE A
SECOND WAVE IS DIGGING ACROSS THE CANADIAN PRAIRIES. THE SOUTHERN
WAVE IS FORECAST TO LIFT ACROSS NRN IL/SRN WI OVERNIGHT. ISENTROPIC
ASCENT INCREASES AHEAD OF THE WAVE LATE THIS EVENING...WITH TOP DOWN
SATURATION GRADUALLY EATING AWAY AT THE VERY DRY AIRMASS CURRENTLY
IN PLACE. MOST MODELS INDICATE THAT PRECIP WILL BEGIN JUST BEFORE
MIDNIGHT OVER NORTH CENTRAL ILLINOIS AND INITIALLY WILL BE MAINLY
CONFINED TO THE TIER OR TWO OF COUNTIES NEAR THE STATE LINE WITH DRY
AIR WINNING OUT OVER AREAS FARTHER SOUTH. COLD TEMPERATURES WITH A
FAIRLY DEEP ISOTHERMAL LAYER THAT EXTEND FROM NEAR THE SURFACE TO
ABOUT 6KFT AND COINCIDES NEAR THE BASE OF THE DENDRITIC GROWTH ZONE
WILL HELP LEAD TO FLUFFIER THAN AVERAGE SNOW RATIOS...17-20:1
INITIALLY PER COBB OUTPUT. BETTER FORCING ASSOCIATED WITH THE UPPER
WAVE WILL BE RIGHT ON THE HEALS OF THIS FIRST WARM ADVECTION BURST
OF SNOW AND WILL LEAD TO SNOW SPREADING SOUTHEAST ACROSS THE
REMAINDER OF THE CWA...INCLUDING THE CHICAGO METRO AREA BY AROUND
3AM CST. DGZ NOT NEARLY AS DEEP OVER REMAINDER OF CWA WITH SLIGHTLY
WARMER TEMPS IN THE LOW/MID LEVELS AND A 2-3KFT DEEP DGZ NEAR THE
TOP OF THE SATURATED LAYER BUT COINCIDING WITH THE BETTER LIFT. THIS
WILL RESULT IN STILL DRY BUT CLOSER TO AVERAGE RATIOS OF 14-16:1.
WITH A BLEND OF NAM/GFS TIMING/QPF THIS EVENING...CONTINUE TO CALL
FOR 1-3 INCHES OF SNOW NORTH OF THE I-88 CORRIDOR...1 TO 2 INCHES
BETWEEN I-88 (ALEK)AND A PONTIAC TO VALPARAISO LINE...AND UP TO AN INCH
SOUTH OF THAT LINE.

 

 

 

and this

 

ILZ014-251530-
COOK-
INCLUDING THE CITIES OF...CHICAGO
237 PM CST TUE DEC 24 2013

.TONIGHT...CHANCE OF SNOW IN THE LATE EVENING AND EARLY MORNING.
SNOW DURING THE PREDAWN HOURS. SNOW ACCUMULATION OF 1 TO
3 INCHES
. LOWS 11 TO 15 IN THE EVENING...THEN TEMPERATURES
SLOWLY RISING OVERNIGHT. SOUTH WINDS 10 TO 15 MPH EARLY IN THE
EVENING BECOMING 10 TO 20 MPH WITH GUSTS UP TO 30 MPH IN THE LATE
EVENING AND OVERNIGHT. CHANCE OF PRECIPITATION 100 PERCENT.

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I think an inch or less is a good call here, just moving too fast and doesn't really have too much moisture with it. Enough to brighten the snow on the ground and make Christmas morning nice and festive. Not expecting much more than this.

Is that for the whole event... Thought there was a round two for the evening/night time frame.

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