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Central PA Late January Thread Part II


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Heavy snow here...it looks like 4 inches on the ground, but I have no idea because the snow is blowing. Anyone else in York PA measured?

I am from York, PA and I have a few relatives telling me there is thundersnow... Missing the event entirely and returning for a home visit tomorrow!

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It's too bad the storm has a slightly positive tilt at 500mb. It's going right with the flow of the atmosphere, however if it were negatively tilted we'd be getting this all night. This goes to show us that we need EVERYTHING to line up JUST right for major snows here.

It looks pretty negative to me honestly, the problem is its just trucking due to the fast flow in the northern stream. The next vort is acting as a kicker and instead of phasing its just pushing it east faster and out. If the northern stream wasnt flying as fast this would slow down but its a Nina. This is why its hard to get huge snows in this area in a strong Nina. THis almost maxed out this systems potential.

post-2304-0-85455400-1296083148.png

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Anyone notice that the radar is drying up on the northern flank now as well. Quite a tongue of dry air just west of Scranton and building southward it would appear. To my untrained eye, everything is "starting" to consolidate toward the low.

TC on 16 had you in the 2-5 range. Fingers crossed for you!!

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SPECIAL WEATHER STATEMENT

NATIONAL WEATHER SERVICE STATE COLLEGE PA

619 PM EST WED JAN 26 2011

PAZ028-036-050-052-056-057-063>065-270045-

ADAMS PA-CUMBERLAND PA-DAUPHIN PA-FRANKLIN PA-JUNIATA PA-

NORTHUMBERLAND PA-PERRY PA-SNYDER PA-YORK PA-

619 PM EST WED JAN 26 2011

AN AREA OF LOCALLY HEAVY SNOW WAS OVER PORTIONS OF

ADAMS...CUMBERLAND...DAUPHIN...FRANKLIN...JUNIATA...NORTHUMBERLAND...

PERRY...SNYDER AND YORK COUNTIES AT 610 PM EST. THE AREA OF SNOW WAS

MOVING NORTHEAST AT AROUND 15 MPH.

VISIBILITIES CAN RAPIDLY DROP TO LESS THAN A MILE WITH AS MUCH AS 1

TO 2 INCHES OF SNOW PER HOUR FALLING BEFORE PRECIPITATION BEGINS TO

TAPER OFF EARLY THIS EVENING. THERE COULD EVEN BE A RUMBLE OF

THUNDER IN SOME SPOTS. EXPECT TRAVEL CONDITIONS TO BE POOR.

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE

PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 209 AND 251...I-81 BETWEEN

MILE MARKERS 18 AND 79...I-83 BETWEEN MILE MARKERS 27 AND 50...I-283.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...THE HARRISBURG

EXPRESSWAY...THE HARRISBURG AIRPORT CONNECTOR...STATE HIGHWAY 283...

ROUTE 11...ROUTE 11/15...ROUTE 15...ROUTE 22...ROUTE 30...ROUTE

209...ROUTE 322...ROUTE 322/22...ROUTE 522...STATE ROAD 94...STATE

ROAD 97.

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Thundersnow is occurring over York right now so areas to the north of that band are under an area of lesser upward motion (even sinking). There is a conservation principle here...adjacent to heavy snowbands (strong, upward motion) is usually an area of weak upward motion, so the lighter reflectivities just to the north of the band make sense.

What is that break line that shows up?

http://www.wundergro...ls=1&rainsnow=0

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