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Feb. 14-17th Clipper Systems


HillsdaleMIWeather

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Got 3.7" in my grid forecast which sounds about right.

 

Hopefully the GFS can pull this off.

 

accqpfmw.png

 

GFS looks to give you about 5" Chambana between both systems.

 

acckucherasnowmw.png

 

6z was a bit uptick in the amount of snow. Hopefully will see that on the 18z again.

 

acckucherasnowmw.png

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euro agrees with you.... takes a southern route along or just south of i-70 weakening as it heads east from IN to OH. Looks like southern half of IL and IN are the winner on the euro.

The same Euro that is slowly caving on the big storm to the GFS? I think I'll pass on the Euro as it has not been good this winter.
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Euro a slight bit wetter for western IL this run.  Now has us up to 1/4".  Other models in the 0.25-0.30" range.  Figuring LSRs will be in the 14-17:1 range so 3-4" still looks good as long as we don't see any future reductions in qpf.  

 

The Euro and GEM both keep the Tue wave to the southwest, so not expecting much with that.  

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Count on 1-2 inches tomorrow. Drizzle on Wednesday, and 50 by Friday. Anything beyond that you should treat as a pleasant surprise and you'll never be disappointed. There's no crying in snow weenie land.

Trust me, not a snow weenie.. haha. I'd much rather severe weather than snow. I'm looking forward to the warmth!

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chicago nws update

 

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
833 PM CST SAT FEB 13 2016

.UPDATE...
832 PM CST

A FEW MINOR TWEAKS TO THE FORECAST THIS EVENING.

FIRST...HIGH CLOUDINESS IS SPREADING EAST ACROSS THE AREA AND
NUDGED SKY COVER UP A BIT MORE QUICKLY TONIGHT. AS A RESULT OF THE
CLOUDINESS AND DEVELOPING SOUTHEAST WINDS OVERNIGHT ANTICIPATE
ONLY A MODEST TEMP FALL FROM HERE ON OUT...MOST PRONOUNCED OVER
EASTERN CWA WHERE CLOUDS AND WINDS WILL BE LATEST TO ARRIVE. AS
CLOUDS THICKEN AND WINDS PICK UP TEMPS WILL PROBABLY BEGIN A SLOW
UPWARD REBOUND PRIOR TO DAYBREAK.

NARROW WNW-ESE BAND OF FRONTOGENETICALLY DRIVEN SNOW IS DEVELOPING
EASTWARD THIS EVENING INTO WEST CENTRAL ILLINOIS. SHORT RANGE
GUIDANCE SUGGESTS THAT THE FRONTOGENESIS WILL WEAKEN OVERNIGHT AS
IT LIFTS SLOWLY NORTHWARD. NOT UNCOMMON FOR SHORT RANGE GUIDANCE
TO WEAKEN SUCH FEATURES UNREALISTICALLY AND FOR THEM TO PERSIST
LONGER THAN MODELS SUGGEST. IF THIS WERE TO OCCUR...THEN COULD SEE
SNOW GRADUALLY INCH NORTHEAST INTO OUR SOUTHWESTERN MOST CWA PRIOR
TO DAWN. MIDNIGHT SHIFT WILL NEED TO MONITOR TRENDS CLOSELY.

WATER VAPOR IMAGERY EARLY THIS EVENING SHOWS POWERFUL SHORTWAVE
OVER THE NORTHERN HIGH PLAINS DIGGING SOUTHEASTWARD. NLDN HAS
SHOWN A FAIR AMOUNT OF CONVECTION BREAKING OUT IN ADVANCE OF THIS
FEATURE OVER SOUTH DAKOTA. NUMERICAL GUIDANCE ALL AGREES THAT THIS
SHORTWAVE WILL BEGIN DAMPENING OUT OVERNIGHT AND PARTICULARLY ON
SUNDAY AS IT ENCOUNTERS A MORE CONFLUENT FLOW ON THE BACKSIDE OF
DEPARTING UPPER LOW RESPONSIBLE FOR OUR CURRENT COLD SNAP.

THE MILLION DOLLAR QUESTION TOMORROW IS HOW QUICKLY THE SNOW IN
ADVANCE OF THIS FEATURE WILL WEAKEN IN RESPONSE TO THE WEAKENING
SYSTEM. MADE NO CHANGES TO GOING FORECAST FOR TOMORROW...THOUGH
SOME OF THE LATEST GUIDANCE COMING IN WOULD SUGGEST THAT SNOWFALL
TOTALS COULD END UP BEING SKEWED A BIT MORE TOWARD THE LOWER END
OF THE FORECAST RANGES.

STEEP MID-LEVEL LAPSE COULD ALLOW SOME BANDING FEATURES TO
DEVELOP...EVEN THOUGH FORCING MAY BE WANING WITH TIME TOMORROW.
ANY BANDING FEATURES THAT DO DEVELOP WOULD LOCALLY ENHANCE
SNOWFALL AMOUNTS AND COULD ALLOW SOME AREAS TO SEE SNOWFALL
AMOUNTS A BIT HIGHER THAN LATEST GUIDANCE SUPPORTS AND MORE IN
LINE WITH HIGHER END OF OUR FORECAST SNOWFALL AMOUNT RANGES. GIVEN
THE RANGE OF POSSIBILITIES SEE NO REASONS TO MAKE ANY CHANGES TO
FORECAST AT THIS TIME.

IZZI

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chicago nws update

 

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL

833 PM CST SAT FEB 13 2016

.UPDATE...

832 PM CST

A FEW MINOR TWEAKS TO THE FORECAST THIS EVENING.

FIRST...HIGH CLOUDINESS IS SPREADING EAST ACROSS THE AREA AND

NUDGED SKY COVER UP A BIT MORE QUICKLY TONIGHT. AS A RESULT OF THE

CLOUDINESS AND DEVELOPING SOUTHEAST WINDS OVERNIGHT ANTICIPATE

ONLY A MODEST TEMP FALL FROM HERE ON OUT...MOST PRONOUNCED OVER

EASTERN CWA WHERE CLOUDS AND WINDS WILL BE LATEST TO ARRIVE. AS

CLOUDS THICKEN AND WINDS PICK UP TEMPS WILL PROBABLY BEGIN A SLOW

UPWARD REBOUND PRIOR TO DAYBREAK.

NARROW WNW-ESE BAND OF FRONTOGENETICALLY DRIVEN SNOW IS DEVELOPING

EASTWARD THIS EVENING INTO WEST CENTRAL ILLINOIS. SHORT RANGE

GUIDANCE SUGGESTS THAT THE FRONTOGENESIS WILL WEAKEN OVERNIGHT AS

IT LIFTS SLOWLY NORTHWARD. NOT UNCOMMON FOR SHORT RANGE GUIDANCE

TO WEAKEN SUCH FEATURES UNREALISTICALLY AND FOR THEM TO PERSIST

LONGER THAN MODELS SUGGEST. IF THIS WERE TO OCCUR...THEN COULD SEE

SNOW GRADUALLY INCH NORTHEAST INTO OUR SOUTHWESTERN MOST CWA PRIOR

TO DAWN. MIDNIGHT SHIFT WILL NEED TO MONITOR TRENDS CLOSELY.

WATER VAPOR IMAGERY EARLY THIS EVENING SHOWS POWERFUL SHORTWAVE

OVER THE NORTHERN HIGH PLAINS DIGGING SOUTHEASTWARD. NLDN HAS

SHOWN A FAIR AMOUNT OF CONVECTION BREAKING OUT IN ADVANCE OF THIS

FEATURE OVER SOUTH DAKOTA. NUMERICAL GUIDANCE ALL AGREES THAT THIS

SHORTWAVE WILL BEGIN DAMPENING OUT OVERNIGHT AND PARTICULARLY ON

SUNDAY AS IT ENCOUNTERS A MORE CONFLUENT FLOW ON THE BACKSIDE OF

DEPARTING UPPER LOW RESPONSIBLE FOR OUR CURRENT COLD SNAP.

THE MILLION DOLLAR QUESTION TOMORROW IS HOW QUICKLY THE SNOW IN

ADVANCE OF THIS FEATURE WILL WEAKEN IN RESPONSE TO THE WEAKENING

SYSTEM. MADE NO CHANGES TO GOING FORECAST FOR TOMORROW...THOUGH

SOME OF THE LATEST GUIDANCE COMING IN WOULD SUGGEST THAT SNOWFALL

TOTALS COULD END UP BEING SKEWED A BIT MORE TOWARD THE LOWER END

OF THE FORECAST RANGES.

STEEP MID-LEVEL LAPSE COULD ALLOW SOME BANDING FEATURES TO

DEVELOP...EVEN THOUGH FORCING MAY BE WANING WITH TIME TOMORROW.

ANY BANDING FEATURES THAT DO DEVELOP WOULD LOCALLY ENHANCE

SNOWFALL AMOUNTS AND COULD ALLOW SOME AREAS TO SEE SNOWFALL

AMOUNTS A BIT HIGHER THAN LATEST GUIDANCE SUPPORTS AND MORE IN

LINE WITH HIGHER END OF OUR FORECAST SNOWFALL AMOUNT RANGES. GIVEN

THE RANGE OF POSSIBILITIES SEE NO REASONS TO MAKE ANY CHANGES TO

FORECAST AT THIS TIME.

IZZI

What a BS write up. " looks less, but could be more". No balls! Ride 2.2" and sweat it.

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