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PennMan

Central PA - December 2013

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Son lives in Waterville Pa. He was hunting up in that area today.  And said it started snowing up there around 4:00 but his elevation is about 1800'

Still mostly rain here.
 

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Looking at various radars, there doesn't seem to be much of an eastward push to that rain/snow line. It appears to be almost stationary.

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I'm a little worried that if the precip lightens up too much, we might go back to plain sleet. Maybe not, but I could see it happening.

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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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Looking at various radars, there doesn't seem to be much of an eastward push to that rain/snow line. It appears to be almost stationary.

Those are horrible. They had me at snow for 1 1/2 hours while there was a rain with a little sleet mix.

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I'm a little worried that if the precip lightens up too much, we might go back to plain sleet. Maybe not, but I could see it happening.

Did that here. Sleet and snow now. Curious to see if it goes back after this lull passes.

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Those are horrible. They had me at snow for 1 1/2 hours while there was a rain with a little sleet mix.

 

 

Are there any out there that are decent?

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Nice slick coating of (mostly) sleet on everything now. Maybe 1/4" of accumulation. Looks like the dry slot is filling in, and if anything it looks like a band might be trying to set up in line with State College?

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Did that here. Sleet and snow now. Curious to see if it goes back after this lull passes.

 

I think it should go over to snow pretty soon, actually. Like over the next hour both of us should be snow and no looking back.

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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.

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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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CTP needs to issue a flood advisory for HBG and Cumberland county. Lots of street flooding occurring

if we flash freeze it could get really bad... this rain feels colder than last week for sure

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