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January 3-6th Winter Storm


Chicago Storm

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Nice AFD from IND about this weekend

 

 

MORE SIGNIFICANT SNOWFALL ALONG WITH BITTER COLD TEMPERATURES ARE
LOOMING LATE THIS WEEKEND AND EARLY NEXT WEEK RESPECTIVELY AS A
POLAR JET DIVES SOUTHEAST CARVING OUT A SHARP NEGATIVELY TILTED
UPPER TROUGH SOUTH OF A STRONG CANADIAN VORTEX. THIS POLAR JET IS
EXPECTED TO PHASE WITH THE SUBTROPICAL JET LATE THIS WEEKEND
RESULTING IN SIGNIFICANT DEEPENING OF A SURFACE LOW ACROSS THE OHIO
VALLEY AND EASTERN STATES. THE ECMWF HAS BEEN THE MOST CONSISTENT
OPERATIONAL MODEL WITH PLENTY OF SUPPORT FROM MOST OF THE MODELS
EXCEPT THE 00Z GFS AND GFS. THE GFS HAS BEEN CONSISTENTLY WEAKER
AND QUICKER WITH THE SURFACE LOW. 00Z REGIONAL ALLBLEND FAVORS THE
ECMWF CONSISTENCY AND SEEMS TO HAVE A GOOD HANDLE ON THE EXPECTED
EVOLUTION OF THIS SYSTEM AND BRUTAL COLD TEMPERATURES TO FOLLOW.
SO...WILL STICK CLOSE TO THE REGIONAL ALLBLEND WITH ONLY A TWEAK
HERE OR THERE.

MODELS ARE IN GOOD CONSISTENCY WITH INCREASING PRECIPITATION CHANCES
ESPECIALLY AFTER 06Z SUNDAY. MODELS ALSO ARE IN GOOD AGREEMENT WITH
THE HIGHEST QPF THROUGH SUNDAY ACROSS OUR SOUTHEASTERN COUNTIES
WHICH LOOKS REASONABLE CONSIDERING THE FORECASTED TRACK OF THE
SURFACE LOW ACROSS NORTHERN KENTUCKY. OF COURSE ANY CHANGE IN THE
LOW TRACK WOULD RESULT IN A CHANGE IN THE AXIS OF HEAVY
PRECIPITATION. BUFKIT...SUGGESTS ALL THE PRECIPITATION SHOULD BE
SNOW EVEN IN THE SOUTH...HOWEVER A NORTHWARD TREND IN THE LOW TRACK
COULD RESULT IN SOME RAIN MIXING IN ACROSS OUR SOUTH. FOR NOW
THOUGH...WILL GO WITH ALL SNOW. WITH INCREASING CONFIDENCE DUE TO
THE EXCELLENT CONSISTENCY OF THE FAVORED ECMWF. ALL EXTENDED MODELS
HAVE HIGH 24 HOUR SNOWFALL AMOUNTS WITH THIS SYSTEM. THE STRONGER
ECMWF AND CANADIAN MODELS HAVE 8 TO 10 INCHES OF STORM TOTAL
SNOWFALL AND EVEN THE WEAKER GFS HAS 6 TO 8 ENDING 12 MONDAY.

IN ADDITION TO THE SNOWFALL...WINDS IN BETWEEN ARCTIC HIGH PRESSURE
ACROSS THE PLAINS AND THE STRENGTHENING DEPARTING LOW PRESSURE
SYSTEM WILL BRING IN BREEZY AND GUSTY NORTHWEST WINDS LATE SUNDAY
INTO MONDAY NIGHT. WITH TEMPERATURES FALLING TO AROUND ZERO ALONG
AND NORTH OF INTERSTATE 70 SUNDAY NIGHT AND THE BREEZY
CONDITIONS...THE WIND CHILL COULD FALL BELOW NEGATIVE 30 DEGREES AND
APPROACH NEGATIVE 40 DEGREES MONDAY NIGHT. BESIDES THE DANGEROUSLY
LOW WIND CHILLS...THE WINDS COULD ALSO CAUSE HAVOC ON THE ROADWAYS
WITH SIGNIFICANT BLOWING AND DRIFTING. SHOULD SEE SOME REPRIEVE BY
WEDNESDAY AS THE ARCTIC HIGH SHIFTS TO THE EAST COAST RESULTING IN
BREEZY SOUTHWEST FLOW ACROSS THE OHIO VALLEY. AGAIN...WILL STICK
WITH THE REGIONAL ALLBLEND TEMPERATURES. THE ALLBLEND HAS THE
COLDEST TEMPERATURES MONDAY NIGHT TO NEGATIVE 13 DEGREES ACROSS OUR
NORTH. THE LAST TIME THE INDIANAPOLIS INTERNATIONAL AIRPORT WAS AS
COLD AS NEGATIVE 10 DEGREES WAS JANUARY 16 2009 AND LAST TIME IT WAS
NEGATIVE 15 DEGREES OR BELOW WAS JANUARY 21 1994 TO PUT A
PERSPECTIVE ON THINGS.

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Still a bit uncomfortable with this but right now I'm leaning toward something in the 8-12" range here.  Obviously that would be in trouble if a farther southeast track occurs.  Despite some track uncertainty, in general, ratios should improve a bit as the storm goes on as colder air comes in but there will be time to sort that out later.

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Still a bit uncomfortable with this but right now I'm leaning toward something in the 8-12" range here.  Obviously that would be in trouble if a farther southeast track occurs.  Despite some track uncertainty, in general, ratios should improve a bit as the storm goes on as colder air comes in but there will be time to sort that out later.

 

I'm riding the Canadian for snow and extreme temps.  :snowing:

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Ah crap, not again.

lol, I said the same thing. I guess I would rather be on the NW side then seeing the low track over our heads at this point. I have read from a few AFD's that the euro does the best in speed of fronts and phasing situations so we shall see. Euro did pretty bad qpf wise around these parts north of Detroit with the current system so who knows. Snow breeds snow! Indy has been on a roll.

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