-- Discussion containing changed information from previous version are highlighted. --
000
FXUS61 KPBZ 130058
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
858 PM EDT WED MAR 12 2014

.SYNOPSIS...
LOW PRESSURE WILL MOVE TO THE EAST COAST TONIGHT WITH MUCH COLDER
TEMPERATURES...SNOW AND BLOWING SNOW...AND VERY LOW WIND CHILLS.

&&

.NEAR TERM /THROUGH THURSDAY/...
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QUICK UPDATE TO REFRESH HEADLINES NOW THAT WINTER WEATHER
ADVISORIES HAVE EXPIRED WITH THE EXCEPTION OF THE SOUTHERN RIDGES
WHICH RUNS UNTIL 11 PM. LIGHT SNOW SHOWERS WILL DIMINISH OVER THE
NEXT COUPLE HOURS AS DRIER AIR MOVES IN ON THE BACKSIDE OF
TROUGH...WITH THE ONLY LOCATIONS TO SEE LIGHT SNOW HOLDING ON
BEYOND MIDNIGHT ALONG THE RIDGES DUE TO UPSLOPE FLOW.

WILL BE ISSUING A SPS SHORTLY TO HIGHLIGHT THE POTENTIAL FOR ICY
CONDITIONS OVERNIGHT ON UNTREATED ROADS AS TEMPERATURES CONTINUE
TO PLUMMET...AND STRONG WINDS OVERNIGHT COMBINED WITH SINGLE DIGIT
TEMPERATURES WILL RESULT IN WIND CHILL VALUES AS LOW AS -20F
OVERNIGHT AND TOMORROW MORNING. MOSTLY SUNNY CONDITIONS EXPECTED
BY LATE TOMORROW MORNING AS HIGH PRESSURE BUILDS IN...WHICH WILL
HELP THE FORECAST MAX TEMPERATURES THAT ARE BETWEEN 20 AND 25
DEGREES BELOW NORMAL FEEL A LITTLE BETTER.
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&&

.SHORT TERM /THURSDAY NIGHT/...
CLEARING SKIES AND LIGHT WIND WILL ALLOW TEMPS TO DROP OF EARLY
THURSDAY NIGHT INTO THE TEENS...BUT AS SURFACE RIDGE SHIFTS EAST
READINGS MAY HOLD STEADY OR BEGIN TO RISE BEFORE DAYBREAK.

STRONG WARM ADVECTION UNDER SOUTHWEST FLOW FRIDAY WILL ALLOW A
QUICK WARM UP TO NEAR OR ABOVE SEASONAL AVERAGE FRIDAY.

A COLD FRONT WILL CROSS THE UPPER OHIO VALLEY LATER FRIDAY NIGHT
AND EARLY SATURDAY MORNING WITH RAIN OR SNOW SHOWERS.

&&

.LONG TERM /FRIDAY THROUGH WEDNESDAY/...
DRY WEA WITH BLDG HIGH PRES IS EXPD SAT NGT. SFC LOW PRES IS PROGGED
TO DVLP ACRS THE SE CONUS AND TRACK OFF THE COAST SUN INTO MON.
AREAS WELL S OF PIT COULD BE ON THE NRN PERIPHERY PCPN FM THE LOW SO
INCLUDED LOW CHC POPS FOR MAINLY SNW. UPR FLOW BCMS ZONAL AFT MON
WITH TEMPS APCHG SEASONAL AVGS.

&&

.AVIATION /00Z THURSDAY THROUGH MONDAY/...
GENERAL MVFR CIGS EXPECTED OVERNIGHT WITH OCCASIONAL MVFR VIS WITH
-SW. WINDS WILL REMAIN GUSTY THROUGH THE FORECAST PERIOD WITH NW
WINDS OF 10 TO 20 KTS...GUSTS 25 TO 35 KTS.

CIGS WILL IMPROVE AFTER SUNRISE THURSDAY...AS STRATOCU DECK WILL
DECREASE AND SCT OUT.

.OUTLOOK.../THURSDAY THROUGH SUNDAY/...
RSTRNS ARE PSBL FRI NGT INTO SAT WITH A CROSSING CDFNT...OTRW VFR
CONDS EXPD.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
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MD...WIND CHILL ADVISORY FROM 1 AM TO NOON EDT THURSDAY FOR MDZ001.
     WINTER WEATHER ADVISORY UNTIL 11 PM EDT THIS EVENING FOR
     MDZ001.
OH...WIND CHILL ADVISORY FROM 1 AM TO NOON EDT THURSDAY FOR
     OHZ039>041-049-050.
PA...WIND CHILL ADVISORY FROM 1 AM TO NOON EDT THURSDAY FOR
     PAZ007>009-013>016-020>023-029-073>076.
     WINTER WEATHER ADVISORY UNTIL 11 PM EDT THIS EVENING FOR
     PAZ074-076.
WV...WIND CHILL ADVISORY FROM 1 AM TO NOON EDT THURSDAY FOR
     WVZ001>003-023-041.
     WINTER WEATHER ADVISORY UNTIL 11 PM EDT THIS EVENING FOR
     WVZ023-041.
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&&

$$