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January 3-6th Winter Storm


Chicago Storm

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IND leaning towards the EURO..

 

COLD BUT DRY WEATHER WILL BE THE RULE FRIDAY AS ARCTIC HIGH PRESSURE
MOVES EAST ACROSS OUR REGION. A SOUTHERLY FLOW ON THE BACK SIDE OF
THIS HIGH WILL ALLOW SOME MODERATING IN TEMPERATURES FRIDAY NIGHT
AND EVEN MILDER TEMPERATURES SATURDAY. GIVEN THE THICK SNOW COVER
WILL LEAN TOWARDS THE LOWER END OF A MOS BLEND ON TEMPERATURES.

MODELS INDICATE A SIGNIFICANT WINTER STORM MAY AFFECT US LATE
SATURDAY NIGHT AND SUNDAY AS LOW PRESSURE TRACKS ACROSS THE LOWER
OHIO VALLEY AND UPPER FLOW BECOMES MORE AMPLIFIED ACROSS THE CENTRAL
AND EASTERN U.S. WITH A STRONG UPPER LOW JUST NORTH OF LAKE SUPERIOR.
THE NAM AND GFS HAVE TRENDED A LITTLE LESS AGGRESSIVE ON SNOW AMOUNTS
AROUND SUNDAY AS THEY TRACK THE SURFACE LOW A LITTLE FASTER AND
FARTHER TO THE SOUTH AND EAST. ON THE OTHER HAND...THE 12Z EURO AND
GEMNH MODELS INDICATE POSSIBLE HEAVY SNOW WITH A STRONGER LOW
TRACKING JUST SOUTH OF THE OHIO RIVER. FOR NOW WILL LEAN TOWARDS
THE 12Z EURO AS IT IS HAS BEEN VERY CONSTANT AND IS CONSIDERED ONE
OF THE BETTER LONG RANGE MODELS. GIVEN THAT THIS SYSTEM IS STILL
SEVERAL DAYS AWAY WILL NOT ISSUE ANY HEADLINES YET. WILL ISSUE
INSTEAD A SPECIAL WEATHER STATEMENT ON POSSIBILITY OF SIGNIFICANT
SNOWFALL SUNDAY.

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amazing consistency among models....haven't seen that all year.   Hard to ignore.....sucks for me.

 

However I'll pull out an often used weenie card from the past:

 

:weenie: "once this current storm exits, the models will have a better handle on the strength of the incoming air mass and will shift southeast..." :weenie:

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The NAM coming in looking all sexy....ooooh.

Sent from my HTC6435LVW

 

Yup. Looks similar to the GGEM/Euro and the UKMET, QPF wise and track wise. Low tracks over Southern Illinois/IND, through the Ohio Valley and right over the GTA. 

 

General qpf of 0.50 to 0.75 in many regions. 

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The NAM coming in looking all sexy....ooooh.

Sent from my HTC6435LVW

 

Yup. Looks similar to the GGEM/Euro and the UKMET, QPF wise and track wise. Low tracks over Southern Illinois/IND, through the Ohio Valley and right over the GTA. 

 

General qpf of 0.50 to 0.75 in many regions. 

Anything less than 0.50 scares me.

I haven't cracked 6 inches since Nov 2011.

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ILN usuing I-71 as changeover point.

 

 

 


.LONG TERM /SUNDAY THROUGH THURSDAY/...
STRONG COLD FRONT WITH WAVE OF LOW PRESSURE WILL AFFECT THE REGION
ON SUNDAY. MODELS ARE IN GOOD AGREEMENT WITH TIMING FOR THIS SYSTEM
SO HAVE GONE WITH 100 POPS. MODELS HAVE ALSO COME INTO CLOSER
AGREEMENT WITH REGARDS TO TEMPS. GFS STILL OFFERS THE COLDER
SOLUTION...SUGGESTING BELOW FREEZING TEMPS AND ALL SNOW. THE ECMWF
IS TRENDING COLDER...BUT IS STILL WARM ENOUGH FOR RAIN. HEDGED
BETWEEN THE TWO AND BROUGHT A CHANGE TO RAIN UP TO I-71 SUNDAY
AFTERNOON WHICH WILL CUT INTO SNOWFALL THERE. RAIN WILL CHANGE BACK
TO SNOW BY SUNDAY EVENING. EXPECTED SNOWFALL TOTALS WOULD LEAD TO
HEADLINES FOR WINTER WEATHER ON SUNDAY.


SNOW WILL DIMINISH AND TEMPS WILL PLUMMET SUNDAY NIGHT BEHIND THE
FRONT...WITH LOWS AVERAGING ZERO. THERE WILL BE A LOW CHANCE FOR
SNOW SHOWERS MONDAY IN THE VERY COLD NORTHWEST FLOW...WITH HIGHS
PRIMARILY IN THE SINGLE DIGITS.

MONDAY NIGHT IS SHAPING UP TO BE THE COLDEST NIGHT IN MANY YEARS.
UNDER COLD ADVECTION AND A DEEPENING ARCTIC AIRMASS...AND WITH SNOW
COVER CONTRIBUTING ITS INFLUENCE...LOWS ON MONDAY NIGHT ARE EXPECTED
TO RANGE FROM 15 BELOW ZERO IN THE NORTHERN MIAMI VALLEY UP TO 5
BELOW IN THE FAR SOUTHEAST. WIND CHILLS MAY FALL AS LOW AS 40 BELOW
ZERO...WELL INTO WIND CHILL HEADLINE TERRITORY.

HIGH PRESSURE AND A DRY AIRMASS WILL BE PUSHING IN FROM THE
SOUTHWEST ON TUESDAY. UNDER THE FRIGID AIRMASS...HIGHS IN THE LOW TO
MID SINGLE DIGITS ARE ANTICIPATED. ANOTHER NIGHT OF BELOW ZERO
READINGS IS FORECAST FOR TUESDAY NIGHT...THOUGH NOT QUITE AS COLD AS
ON MONDAY NIGHT.

LOOK FOR SLIGHTLY WARMER TEMPS IN THE TEENS ON WEDNESDAY AS WEAK
WARM ADVECTION BEGINS BEHIND DEPARTING HIGH PRESSURE. MOISTURE
WILL ALSO INCREASE...WITH A CHANCE OF SNOW STARTING WEDNESDAY
AFTERNOON ALONG A DEVELOPING WARM FRONTAL BOUNDARY. THE CHANCE OF
SNOW WILL CONTINUE ON THURSDAY WITH SOMEWHAT WARMER TEMPS
ACCOMPANIED BY MOISTURE AND SYNOPTIC SCALE LIFT AHEAD OF LOW
PRESSURE.
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This was just posted on the WAVE 3 facebook page. Two meteorologists explain that the EURO has been trending southeast the last three runs. White is operational and yellow is the the ensemble "mean."

Notice the 588dm heights out over the Atlantic though, every run they have been expanding, there is only so far it could trend Southeast with the ridging strengthening off the East Coast.

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Notice the 588dm heights out over the Atlantic though, every run they have been expanding, there is only so far it could trend Southeast with the ridging strengthening off the East Coast.

 

 

You'd be able to do a better comparison but how did the 12z Euro look compared to 00z?  It seemed to me like the 12z didn't really track farther south than the 00z.

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You'd be able to do a better comparison but how did the 12z Euro look compared to 00z?  It seemed to me like the 12z didn't really track farther south than the 00z.

12z was stronger and a hair west of the 00z starting at 72hr and continuing through the run. I'd say about 50 miles or so west of the 00z.

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