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Central PA - December 2013


PennMan

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New advisories for some south-central counties.

...WINTRY PRECIPITATION EXPECTED THIS EVENING AND TONIGHT...

.A WAVE OF LOW PRESSURE RIDING NORTHEAST ALONG A SLOW MOVING FRONT

WILL BE THE FOCUS FOR HEAVY SNOW ACROSS THE NORTHERN AND WESTERN

MOUNTAINS OF THE STATE...WITH A MIXED BAG OF SNOW...SLEET...AND

FREEZING RAIN THROUGHOUT THE SOUTH-CENTRAL MOUNTAINS AND MIDDLE

SUSQUEHANNA VALLEY INTO VERY EARLY SATURDAY...

PAZ036-056>058-063-071000-

/O.EXB.KCTP.WW.Y.0023.131207T0300Z-131207T1000Z/

FRANKLIN-PERRY-DAUPHIN-SCHUYLKILL-CUMBERLAND-

INCLUDING THE CITIES OF...CHAMBERSBURG...NEWPORT...HARRISBURG...

HERSHEY...POTTSVILLE...CARLISLE

654 PM EST FRI DEC 6 2013

...A WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO

5 AM EST SATURDAY...

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A WINTER

WEATHER ADVISORY FOR MIXED PRECIPITATION...WHICH IS IN EFFECT

FROM 10 PM THIS EVENING TO 5 AM EST SATURDAY.

* LOCATIONS...PORTIONS OF THE LOWER SUSQUEHANNA VALLEY AND EAST

CENTRAL MOUNTAINS.

* HAZARD TYPES...SLEET AND FREEZING RAIN...ENDING AS A FEW HOUR

PERIOD OF WET SNOW.

* ICE ACCUMULATIONS...1 TO 2 TENTHS OF AN INCH...NEAR AND TO THE

NORTH OF INTERSTATE 81.

* SNOW ACCUMULATIONS...ONE INCH OR LESS.

* TIMING...RAIN WILL CHANCE TO A SEVERAL HOUR PERIOD OF SLEET AND

FREEING RAIN LATE THIS EVENING...BEFORE ENDING AS A BRIEF PERIOD

OF WET SNOW WELL AFTER MIDNIGHT.

* IMPACTS...HAZARDOUS TRAVEL ON UNTREATED ROADS. ISOLATED POWER

OUTAGES POSSIBLE DUE TO DOWNED TREE LIMBS AND POWER LINES.

* TEMPERATURES...IN THE MID 30S...SLOWLY FALLING TO NEAR 30 EARLY

SATURDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HAZARDOUS WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING.

USE CAUTION IF TRAVELING. FOR THE LATEST WEATHER INFORMATION...GO

TO WEATHER.GOV/CTP OR STAY TUNED TO NOAA WEATHER RADIO.

REPORT SNOW OR ICE ACCUMULATION TO THE NATIONAL WEATHER SERVICE

STATE COLLEGE BY SENDING AN EMAIL TO [email protected]...

POSTING TO THE NWS STATE COLLEGE FACEBOOK PAGE...OR TWEET

@NWSSTATECOLLEGE WITH THE HASHTAG #CTPWX.

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Decent looking 700 mb frontogenesis currently over southern Ohio based on the SPC mesoanalysis. As it moves towards the northeast that should support at least some enhancement of precipitation rates over central PA.

 

It should also, more importantly, support cooling at that level. :)

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It should also, more importantly, support cooling at that level. :)

 

Yes and there is also some weaker frontogenesis between 700 and 850 mb where there may still be some air above freezing. However, the sleet/snow line is looking pretty well defined on CC and it is pushing generally westward. Hopefully ptype won't be much of a concern within the next hour.

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