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Wednesday April 20 2011: Potential severe weather and warmth


earthlight

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ww0172_radar.gif

DISCUSSION...LOW-TOPPED TSTMS ARE GRADUALLY INTENSIFYING THIS

AFTERNOON ALONG COLD FRONT PUSHING EWD ACROSS THE REGION. BREAKS IN

THE CLOUDS HAVE ALLOWED FOR A CORRIDOR OF STRONGER DIABATIC WARMING

WHICH IS SUPPORTING SBCAPE OF AROUND 500 J/KG. GIVEN THE STRONG WLY

DEEP-LAYER WIND FIELD OBSERVED BY AREA VWPS...THE POTENTIAL WILL

EXIST FOR SMALL SUPERCELLS OR BOWING STRUCTURES WITH THE PRIMARY

HAZARD BEING DAMAGING WIND GUSTS.

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DISCUSSION...LOW-TOPPED TSTMS ARE GRADUALLY INTENSIFYING THIS

AFTERNOON ALONG COLD FRONT PUSHING EWD ACROSS THE REGION. BREAKS IN

THE CLOUDS HAVE ALLOWED FOR A CORRIDOR OF STRONGER DIABATIC WARMING

WHICH IS SUPPORTING SBCAPE OF AROUND 500 J/KG. GIVEN THE STRONG WLY

DEEP-LAYER WIND FIELD OBSERVED BY AREA VWPS...THE POTENTIAL WILL

EXIST FOR SMALL SUPERCELLS OR BOWING STRUCTURES WITH THE PRIMARY

HAZARD BEING DAMAGING WIND GUSTS.

That is as far as those storms will get. PA is having one heck of a season so far, starting with the tornados back in March, crazy stuff.

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New Severe T Storm Watch in Effect for C and E PA...

SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 172

NWS STORM PREDICTION CENTER NORMAN OK

405 PM EDT WED APR 20 2011

SEVERE THUNDERSTORM WATCH 172 IS IN EFFECT UNTIL 1100 PM EDT

FOR THE FOLLOWING LOCATIONS

PAC001-009-011-013-015-025-027-035-037-041-043-055-057-061-067-

069-071-075-077-079-081-087-089-093-097-099-103-107-109-113-115-

119-127-131-133-210300-

/O.NEW.KWNS.SV.A.0172.110420T2005Z-110421T0300Z/

PA

. PENNSYLVANIA COUNTIES INCLUDED ARE

ADAMS BEDFORD BERKS

BLAIR BRADFORD CARBON

CENTRE CLINTON COLUMBIA

CUMBERLAND DAUPHIN FRANKLIN

FULTON HUNTINGDON JUNIATA

LACKAWANNA LANCASTER LEBANON

LEHIGH LUZERNE LYCOMING

MIFFLIN MONROE MONTOUR

NORTHUMBERLAND PERRY PIKE

SCHUYLKILL SNYDER SULLIVAN

SUSQUEHANNA UNION WAYNE

WYOMING YORK

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The storms over Central PA are falling apart. BRN numbers are really low right now, over PA and east which means the shear is too strong.

yup, the mountains are ripping that small line apart

they may refire once they get past, but im not expecting anything widespread or jaw dropping.

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Beautiful weather..but the convergence along the front sucks. Doubt we will see much organized convection.

It's not ideal but its enough to get something done, it looks like the best dynamics and instability are building just out ahead of the front in eastern PA. They should slide eastward with the front itself.

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