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Potential major winter storm - Feb 24-25 PART II


snowstormcanuck

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DUPAGE-KENDALL-GRUNDY-
INCLUDING THE CITIES OF...WHEATON...OSWEGO...MORRIS
312 PM CST TUE FEB 23 2016

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM WEDNESDAY TO 4 AM
CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 9 AM
WEDNESDAY TO 4 AM CST THURSDAY.

* TIMING...SNOW WILL BEGIN LATE TUESDAY NIGHT OR EARLY
WEDNESDAY MORNING...POSSIBLY BRIEFLY STARTING AS A MIX OF RAIN
OR SNOW.

* MAIN IMPACT...WET SNOW ACCUMULATIONS OF 2 TO 4 INCHES
LIKELY...HIGHEST IN THE SOUTHEASTERN PORTION OF THE COUNTIES.
SNOWFALL TOTALS COULD VARY SUBSTANTIALLY OVER SHORT DISTANCES
WITH SOME AREAS WITHIN THE ADVISORY POTENTIALLY SEEING VERY
LITTLE SNOW...ESPECIALLY IN THE NORTHWESTERN PORTION OF THE
COUNTIES.

* OTHER IMPACTS...STRONG NORTHERLY WINDS WILL GUST TO 40 TO 45
MPH AT TIMES. WHERE MODERATE TO HEAVY SNOW OCCURS...THIS WILL
CREATE A WIND WHIPPED SNOW THAT WILL CAUSE SHARP VISIBILITY
REDUCTIONS MAKING TRAVEL QUITE HAZARDOUS.

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Wow really need to revise down my YYZ call. I'll go 2-4" now, mostly backend.

West jumps are impressive. Is there a chance IN gets shut out? Looked like the sweet spot 12 hours ago.

 

I ran 18z NAM through BUFKIT. Still about 1/4" QPF of front end as snow or close to being snow. From the raw NCEP images, you wouldn't think that possible with the 850 line so far to the north. RGEM still on board as well. Best case scenario is somehow squeezing out 2-4" from the front-end, and 2-4" from the wraparound for a 4-8" storm total. I give that about 1 in 20 odds.

 

More likely 1" or so on the front and 1-3" behind.

 

Looks like Guelph's bit of elevation may pay dividends for you.

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