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Tuesday 2/18 Winter Storm thump thread.


Heisy

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Wxsim with 12z data has snow arriving and getting heavy quickly by 3am with it all done by 10am with around 4.5" to 6.0" of snow

This would get me past 70" and you well toward 80" for the season.   95" is the all time record I think you said...

With the pattern reverting after this week, that doesn't seem to be totally out of the realm, although the 95"

was probably measured in Coatesville, so your location was probably well over 100" that winter.

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For what its worth, WPC says throw out the NAM

 

http://www.hpc.ncep.noaa.gov/discussions/pmdhmd.html

NEGATIVELY TILTED UPPER TROUGH AND SURFACE LOW REDEVELOPMENTIMPACTING NEW ENGLAND ON TUE~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~PREFERENCE: NON 12Z NAM COMPROMISECONFIDENCE: AVERAGETHE 12Z NAM/GFS HAVE BOTH TRENDED SLOWER OVER THE PAST 3 CYCLESWITH THE SHORTWAVE IMPACTING THE NORTHEAST TUE WHILE THE 00ZECMWF/UKMET/CMC DO NOT SHOW MUCH OF A TREND. THE LATEST MODELS ARENOW IN FAIRLY GOOD AGREEMENT WITH THE SHORTWAVE AND SURFACE LOWEXPECTED TO REDEVELOP NEAR LONG ISLAND ON TUE...BUT THE 12Z NAMAND 09Z SREF ARE ON THE EDGE OF THE LATEST DETERMINISTIC/ENSEMBLESPREAD IN BEING STRONGER AND SLIGHTLY SLOWER WITH THE LOW-MIDLEVEL WAVE. FOR THIS REASON...A NON NAM COMPROMISE IS PREFERREDWITH ONLY AVERAGE CONFIDENCE NOTING THAT THE NAM IS A LOWPROBABILITY SOLUTION...BUT NOT A NO PROBABILITY SOLUTION.
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Yep - I measured 86.6" in 09/10 but the all-timer is1898/99 with 95.0" - the way the pattern is shaping up we might get close to the all-time record or 3rd place - right now we are in 6th place here is the rankings

 

Rank Season Snowfall 1 1898-99 95.0 2 2009-10 86.6 3 1995-96 81.9 4 1904-05 79.7 5 1909-10 76.8 6 2013-14 72.0 7 1906-07 71.8 8 2002-03 61.0 9 1977-78 59.8 10 1986-87 59.3

 

 

This would get me past 70" and you well toward 80" for the season.   95" is the all time record I think you said...

With the pattern reverting after this week, that doesn't seem to be totally out of the realm, although the 95"

was probably measured in Coatesville, so your location was probably well over 100" that winter.

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Mt Holly going 3-6

 

 

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
240 PM EST MON FEB 17 2014

NJZ001-007>010-012-013-015-PAZ054-055-060>062-103>106-180700-
/O.NEW.KPHI.WW.Y.0012.140218T0800Z-140218T1800Z/
SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-
WESTERN MONMOUTH-MERCER-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS-
INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN...
FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...FREEHOLD...TRENTON...
JIM THORPE...STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...
EASTON...COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...
CHALFONT...PERKASIE...MORRISVILLE...DOYLESTOWN
240 PM EST MON FEB 17 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM TO 1 PM EST
TUESDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
WEATHER ADVISORY FOR NORTHERN NEW JERSEY, THE POCONOS, LEHIGH
VALLEY, BERKS COUNTY AND THE NORTHERN PHILADELPHIA SUBURBS FOR
SNOW...WHICH IS IN EFFECT FROM 3 AM TO 1 PM EST TUESDAY.

* ACCUMULATIONS...SNOW ACCUMULATION OF 3 TO 6 INCHES.

* TIMING...SNOW SHOULD COME IN RAPIDLY OVERNIGHT AND FALL MODERATE
TO HEAVY AT TIMES THROUGHOUT THE MORNING COMMUTE. SNOW SHOULD
END CLOSE TO NOON ON TUESDAY.

* IMPACTS...ONE INCH PER HOUR SNOWFALL RATES ARE LIKELY TO OCCUR
DURING THE MORNING COMMUTE. THIS WILL MAKE DRIVING AND PLOWING
DIFFICULT. THE ADDITIONAL SNOW WILL CAUSE MORE STRAIN ON
WEAKENED STRUCTURES INCREASING THE CHANCES FOR COLLAPSES. ISOLATED
POWER OUTAGES ARE POSSIBLE.

* TEMPERATURES...IN THE MID 20S TO AROUND 30 DEGREES WHILE ITS
SNOWING, RISING ABOVE FREEZING LATER IN THE DAY TUESDAY, EXCEPT
IN THE POCONOS.

* VISIBILITIES...LESS THAN HALF A MILE AT TIMES.

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2-4 for phl Mt Holly

 

 

Winter Weather Advisory

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
240 PM EST MON FEB 17 2014

DEZ001-MDZ008-012-NJZ016>019-PAZ070-071-101-102-180700-
/O.NEW.KPHI.WW.Y.0012.140218T0800Z-140218T1600Z/
NEW CASTLE-CECIL-KENT MD-SALEM-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-DELAWARE-PHILADELPHIA-WESTERN CHESTER-
EASTERN CHESTER-
INCLUDING THE CITIES OF...WILMINGTON...ELKTON...CHESTERTOWN...
PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...
MOUNT HOLLY...MEDIA...PHILADELPHIA...HONEY BROOK...OXFORD...
WEST CHESTER...KENNET SQUARE
240 PM EST MON FEB 17 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM TO 11 AM EST
TUESDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
WEATHER ADVISORY FOR THE INTERSTATE 95 CORRIDOR FROM NORTHERN
DELMARVA THROUGH THE LOCAL PHILADELPHIA METROPOLITAN AREA FOR
SNOW...WHICH IS IN EFFECT FROM 3 AM TO 11 AM EST TUESDAY.

* ACCUMULATIONS...SNOW ACCUMULATION OF 2 TO 4 INCHES.

* ICE ACCUMULATIONS...POSSIBLY A TRACE.

* TIMING...THE SNOW WILL ARRIVE IN TIME FOR THE MORNING COMMUTE ON
TUESDAY MORNING. SNOW WILL FALL MODERATE TO HEAVY AT TIMES
DURING THE EARLY PART OF THE MORNING COMMUTE. A CHANGE TO
FREEZING RAIN OR RAIN IS POSSIBLE AS PRECIPITATION INTENSITY
LESSENS LATER IN THE MORNING.

* IMPACTS...SNOWFALL RATES OF ONE INCH PER HOUR ARE LIKELY DURING
THE HEIGHT OF THE EVENT. THIS WILL COINCIDE WITH THE MORNING
COMMUTE AND IMPACT BOTH TRAVELING AND PLOWING.

* TEMPERATURES...AROUND 30 DEGREES WHILE ITS SNOWING, RISING ABOVE
FREEZING LATER IN THE DAY.

* VISIBILITIES...AROUND HALF A MILE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND POSSIBLY
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING. EXPECT LONGER COMMUTING TIMES. DO NOT TAILGATE.

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Mt Holly going 3-6

 

 

URGENT - WINTER WEATHER MESSAGE

NATIONAL WEATHER SERVICE MOUNT HOLLY NJ

240 PM EST MON FEB 17 2014

NJZ001-007>010-012-013-015-PAZ054-055-060>062-103>106-180700-

/O.NEW.KPHI.WW.Y.0012.140218T0800Z-140218T1800Z/

SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-

WESTERN MONMOUTH-MERCER-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-

WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS-

INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN...

FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...FREEHOLD...TRENTON...

JIM THORPE...STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...

EASTON...COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...

CHALFONT...PERKASIE...MORRISVILLE...DOYLESTOWN

240 PM EST MON FEB 17 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM TO 1 PM EST

TUESDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER

WEATHER ADVISORY FOR NORTHERN NEW JERSEY, THE POCONOS, LEHIGH

VALLEY, BERKS COUNTY AND THE NORTHERN PHILADELPHIA SUBURBS FOR

SNOW...WHICH IS IN EFFECT FROM 3 AM TO 1 PM EST TUESDAY.

* ACCUMULATIONS...SNOW ACCUMULATION OF 3 TO 6 INCHES.

* TIMING...SNOW SHOULD COME IN RAPIDLY OVERNIGHT AND FALL MODERATE

TO HEAVY AT TIMES THROUGHOUT THE MORNING COMMUTE. SNOW SHOULD

END CLOSE TO NOON ON TUESDAY.

* IMPACTS...ONE INCH PER HOUR SNOWFALL RATES ARE LIKELY TO OCCUR

DURING THE MORNING COMMUTE. THIS WILL MAKE DRIVING AND PLOWING

DIFFICULT. THE ADDITIONAL SNOW WILL CAUSE MORE STRAIN ON

WEAKENED STRUCTURES INCREASING THE CHANCES FOR COLLAPSES. ISOLATED

POWER OUTAGES ARE POSSIBLE.

* TEMPERATURES...IN THE MID 20S TO AROUND 30 DEGREES WHILE ITS

SNOWING, RISING ABOVE FREEZING LATER IN THE DAY TUESDAY, EXCEPT

IN THE POCONOS.

* VISIBILITIES...LESS THAN HALF A MILE AT TIMES.

 

 

 

 

 

nothing unexpected there. 

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