-- Discussion containing changed information from previous version are highlighted. --
000
FXUS61 KPBZ 130543
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
143 AM EDT THU MAR 13 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 TODAY/...
QUICK UPDATE TO REFRESH HEADLINES NOW THAT WINTER WEATHER
ADVISORIES ARE NO LONGER IN EFFECT. 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.

ICY CONDITIONS MAINLY ON UNTREATED ROADS WILL BE POSSIBLE 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.

&&

.SHORT TERM /TONIGHT THROUGH 6 PM FRIDAY/...
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 NIGHT 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 /06Z THURSDAY THROUGH MONDAY/...
-- Changed Discussion --
CONVECTIVE SNOW SHOWERS WILL CONTINUE FOR SEVERAL HOURS...SLOWLY
TAPERING DOWN WEST TO EAST BY 09Z. EXPECTING GENERAL MVFR CIGS
WITH OCCASIONAL MVFR VIS IN ANY SNOW SHOWERS. 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...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.
-- End Changed Discussion --

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
-- Changed Discussion --
MD...WIND CHILL ADVISORY UNTIL NOON EDT TODAY FOR MDZ001.
OH...WIND CHILL ADVISORY UNTIL NOON EDT TODAY FOR OHZ039>041-049-
     050.
PA...WIND CHILL ADVISORY UNTIL NOON EDT TODAY FOR PAZ007>009-
     013>016-020>023-029-073>076.
WV...WIND CHILL ADVISORY UNTIL NOON EDT TODAY FOR WVZ001>003-023-
     041.
-- End Changed Discussion --

&&

$$