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December 26th - 27th Winter Storm


Powerball

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Or the weather gods have a new favorite city to screw over... ORD will become the next YYZ

Chicago gets no tears from me after 4 consecutive years of 50"+ seasons AND a 20"+ snowstorm to tout.

Maybe after another season or two similar to 2011-2012 will I start to feel bad for them.

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We may get a track like '04 but keep in mind that one was a two parter coming just hours apart, both of which dropped heavy snow and why the totals got out of hand in some areas. This one doesn't really look like that.

Yep great point! And this storm doesn't have quite the same moisture connection as the 04 one did. Not saying we won't see some significant snow amounts - just likely not anywhere close to what we saw in 04.

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IND AFD

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE INDIANAPOLIS IN

255 PM EST SAT DEC 22 2012

.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...

ISSUED AT 248 PM EST SAT DEC 22 2012

FORECAST FOCUS IS ON SIGNIFICANT STORM SYSTEM THAT COULD IMPACT

CENTRAL INDIANA BEGINNING CHRISTMAS NIGHT. GFS AND ECMWF SEEM TO BE

COMING INTO BETTER AGREEMENT ON THE TRACK OF THE ASSOCIATED SURFACE

LOW...HOWEVER ENSEMBLES STILL SHOWING FAIRLY WIDE SPREAD OF

SOLUTIONS FOR THE TRACK WHICH DECREASES FORECAST CONFIDENCE. WILL

USE A CONSENSUS APPROACH. LOW SHOULD STRENGTHEN AS IT MOVES

NORTHEAST OUT OF TEXAS AND UP THE TENNESSEE VALLEY. STRONG UPPER

FORCING IN THE WAY OF Q VECTOR CONVERGENCE SHOULD MOVE ACROSS THE

AREA POSSIBLY ARRIVING IN THE SOUTH TUESDAY NIGHT BEFORE MIDNIGHT

AND OVERSPREADING THE AREA. RIGHT NOW LOOKS LIKE COLUMN WILL BE COLD

ENOUGH FOR ALL SNOW WITH THE POSSIBLE EXCEPTION OF THE FAR SOUTH AT

PRECIPITATION ONSET WHERE A WINTRY MIX COULD BE POSSIBLE. RIGHT NOW

LATEST GFS AND ECMWF ARE BOTH SHOWING A STORM TOTAL SNOWFALL OF 6-9

INCHES. THIS COULD CHANGE DRASTICALLY WITH A CHANGE IN THE TRACK OF

THE LOW THOUGH AND WITH HIGH ENSEMBLE VARIABILITY NOT READY TO PUT

ANYTHING THAT HIGH IN THE FORECAST.

DRY WEATHER THEN UNTIL ANOTHER SYSTEM APPROACHES ON FRIDAY THAT

COULD BRING MORE SNOW CHANCES FOR THE END OF THE WEEK INTO THE

WEEKEND.

TEMPERATURES THROUGHOUT THE LONG TERM WILL RUN BELOW NORMAL WITH

STRONG UPPER TROUGHS PULLING DOWN COLD CANADIAN AIR. GENERALLY

FOLLOWED ALLBLEND FOR BOTH POPS AND TEMPERATURES.

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I agree, something isn't clicking with the phasing right now. Basically you have a strong southeast ridge with the pv blocking this going over the upper midwest.

Alot of work to be still done. Does she want to be a blockbuster or a secl/sovl?

the last refuge of the desperate weenie...quoting JB:

Joe Bastardi@BigJoeBastardi

Hint on ECMF/GFS is less than norm deepening once past 35 n. So much of model warmth is feedback.. prob overest of warm advection

he also says JMA is in the east crowd

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yup that would do it...

lol the euro has yet to show a 12 hr increment in which the primary was at it's furthest north point.

how common is it for a low to redevelop so far inland like that? I thought most redev happened on the coast

The primary is the first low... that low develops first and heads north/northeast until it hits a wall basically at I-70 in Eastern OH, then the secondary takes over and becomes the dominate low as it hugs the coastline.

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the last refuge of the desperate weenie...quoting JB:

Joe Bastardi@BigJoeBastardi

Hint on ECMF/GFS is less than norm deepening once past 35 n. So much of model warmth is feedback.. prob overest of warm advection

he also says JMA is in the east crowd

JMA is still probably a bit west of yesterday's 0z... still throws some measurable precip into Ohio. But FWIW JB also said that he favors a storm track into Ohio then a jump to the coast...

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Chicago gets no tears from me after 4 consecutive years of 50"+ seasons AND a 20"+ snowstorm to tout.

Maybe after another season or two similar to 2011-2012 will I start to feel bad for them.

Nobody want your tears, douche. At the end of the day they at least still have Chicago and not Detoilet.

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JMA is still probably a bit west of yesterday's 0z... still throws some measurable precip into Ohio. But FWIW JB also said that he favors a storm track into Ohio then a jump to the coast...

actually up to ohio (i know hair splitting lol) but...his snow forecast map looks just like the ones that hammered ohio the last day or two on some of the models

oh well either way it's in the hands of Dr. No. Tonights 00z run will make me decide whether to concede or keep he weenie dream alive.

off to a family dysfunctional xmas dinner :santa::drunk:

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DTX seems to favor a EURO/GFS/"Local WRF Global" consensus. Discuss that GGEM can have a cold bias at times.

2. AT THE SAME TIME, THE DOWNSTREAM RESPONSE PRECEDING THE APPROACH

OF ANOTHER STRONG PACIFIC WAVE IS FORECAST TO FRAGMENT THE

AFOREMENTIONED LARGE CIRCULATION OFF THE COAST OF THE PACIFIC

NORTHWEST, ALLOWING A GREAT DEAL OF ENERGY TO PROPAGATE INTO THE

CONUS AND SPIN UP A SIGNIFICANT BAROCLINIC WAVE NEXT WEEK. WITH THE

JET LONG PROGGED BY THE GLOBAL MODELS TO DIG ALL THE WAY TO THE GULF

COAST, RAPID DEEPENING OF THE SURFACE LOW CONTINUES TO BE STRONGLY

FAVORED TO TAKE PLACE SOMEWHERE OVER THE EAST TX/LOWER MS VALLEY

REGION.

THE 12Z EC/GFS/LOCAL WRF GLOBAL REMAIN IN SOLID AGREEMENT THAT THIS

LOW WILL INITIALLY TRACK NORTHEAST ALONG THE WEST SIDE OF THE

APPALACHIANS. HOWEVER, THE EXPECTED PROGRESSIVE NATURE OF THE

UPPER-LEVEL CIRCULATION WOULD STILL NECESSITATE AN EVENTUAL

TRANSITION OF THE LOW-LEVEL RESPONSE TO THE EAST SIDE OF THE

MOUNTAINS. WHEN AND WHERE THAT OCCURS MAY VERY WELL BE A STICKING

POINT OF THE NEXT SEVERAL FORECAST CYCLES AND A FIRST ORDER

CONTRIBUTOR TO LOCAL SNOWFALL POTENTIAL, OR LACK THEREOF. IT IS

WORTH NOTING THAT NEITHER THE 12Z UKMET NOR GEM ALLOW THE LOW TO

WRAP UP AS QUICKLY AS THE AFOREMENTIONED CONSENSUS. HOWEVER, A

CLOSER LOOK AT THE GEM REVEALS WHAT SEEMS TO BE A MUTED BAROCLINIC

RELEASE DURING TUESDAY`S CRITICAL DEEPENING PERIOD. THIS IS NOT

ATYPICAL OF A MODEL WHICH CAN EXHIBIT A COLD BIAS AT TIMES.

CONFIDENCE THEREFORE REMAINS FAIRLY HIGH IN THE EC/GFS/WRF GLOBAL

DEPICTIONS. AS FOR ACCUMULATION, THE POTENTIAL IS MOST CERTAINLY

THERE FOR A SOLID EVENT, BUT THERE IS STILL PLENTY TO IRON OUT WITH

RESPECT TO LOCAL DURATION/INTENSITY/INTEGRITY OF MOISTURE TRANSPORT

AND DEFORMATION FORCING OVER THE NEXT 100 HOURS OR SO.

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After the dearth of good snowstorms in the subforum in the recent past, 6" is a big deal.

trolling aside....the lack of 1-4" bread and butter events is a much bigger deal. Big Dogs are rare in the midwest and outside a select few (SSC) is overdue.

Anyways, E. IN, NW OH and extreme SE MI looks good for 4-7".

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ILN AFD :snowing:

A

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE WILMINGTON OH

417 PM EST SAT DEC 22 2012

.LONG TERM /TUESDAY THROUGH SATURDAY/...

IN WAKE OF EARLY WEEK SYSTEM SURFACE HIGH PRESSURE BUILDS INTO THE OHIO VALLEY IN REGION OF H5 CONFLUENCE ON CHRISTMAS DAY. TEMPERATURES WILL BE A LITTLE BELOW NORMAL WITH HIGHS RANGING FROM THE LOWER 30S NORTH TO THE UPPER 30S SOUTH. FOCUS SHIFTS TO THE WINTER STORM WHICH WILL AFFECT THE REGION AT MID WEEK. VIGOROUS MID LEVEL S/W TO LIFT FROM THE SRN PLAINS INTO THE LOWER OH VLY TUESDAY NIGHT. NUMERICAL MODEL SOLNS CONTINUE TO SHOW CONSIDERABLE SPREAD REGARDING THE EXACT TRACK OF THE ASSOCIATED SFC WAVE WHICH LIFTS NE THRU THE REGION WEDNESDAY. IN GENERAL THE GFS DETERMINISTIC SOLNS HAVE BEEN THE MOST INCONSISTENT AND THE LATEST 12Z RUN BRINGS MORE WARM AIR INTO ILN/S FA. THE ECMWF SOLN HAS BEEN MORE CONSISTENT WITH THE LATEST 12Z DETERMINISTIC RUN TRENDING SLIGHTLY WEST. GFS ENSEMBLE MEAN SOLN IS PLACED FURTHER EAST THAN THE DETERMINISTIC RUN. HAVE TRENDED THE LATEST FCST TOWARD THE LATEST 12Z ECMWF RUN GIVEN THE CONSISTENCY AND EVIDENCE FROM THE ENSEMBLE SOLNS. HAVE SPREAD LKLY POPS IN FROM THE SOUTH TUESDAY NIGHT AND THEN BUMPED UP POPS TO CATEGORICAL ON WEDNESDAY. THIS SYSTEM HAS THE POTENTIAL TO PRODUCE 6 INCHES OR MORE OF SNOW AND SIGNIFICANT ICE. GIVEN THE HIGH DEGREE OF UNCERTAINTY REGARDING THE EXACT TRACK...WILL CONTINUE TO HIGHLIGHT THIS THREAT IN THE HWO PRODUCT. USING AT TOP DOWN TECHNIQUE APPLIED TO LATEST ECMWF SOLN HAVE WEST CENTRAL OHIO (NORTH OF DAYTON) STAYING ALL SNOW BUT HAVE A MIX SPREADING INTO THE SE HALF OF ILN/S FA DURING THE DAY ON WED. AS COLDER AIR WRAPS INTO THE SYSTEM...HAVE ALL PRECIP CHANGE BACK TO SNOW WEDNESDAY NIGHT. AS THIS WINTER STORM LIFTS NE WILL TAPER OFF SNOW EARLY ON THURSDAY. UPPER LEVEL RIDGING AND SFC RIDGING TO BUILD IN PROVIDING DRY WX CONDITIONS LATER THURSDAY AND FRIDAY. NEXT SYSTEM LOOKS TO BEGIN AFFECTING THE REGION LATE FRIDAY NIGHT BRINGING A CHC OF SNOW SHOWERS. HAVE SPREAD THIS CHC ACRS THE ENTIRE FA FROM WEST TO EAST ON SATURDAY.

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