The Latest NWS Regional Area Forecast Discussions


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NWS Area Weather Forecast Discussion
County Warning Area [CWA]: PBZ
Regional NWS Weather Office: Pittsburgh, PA

000
FXUS61 KPBZ 261918
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
218 PM EST WED NOV 26 2014

.SYNOPSIS...
SNOW WILL END WEST TO EAST THIS AFTERNOON AS THE COASTAL LOW MOVES
OFF TO THE NORTHEAST. A SECOND...WEAKER SYSTEM WILL USHER IN COLDER
TEMPERATURES AND LINGERING SNOW SHOWER CHANCES THROUGH THE END OF
THE WEEK.

&&

.NEAR TERM /THROUGH TONIGHT/...
MOISTURE ASSOCIATED WITH THE COASTAL LOW WILL QUICKLY SHIFT
EASTWARD THROUGH THE REST OF THE AFTERNOON...WITH SNOW EXPECTED TO
END AT PITTSBURGH WITHIN THE HOUR. AN ADDITIONAL INCH OR SO WILL
BE POSSIBLE FURTHER EAST BEFORE SNOW FINALLY ENDS BY SUNSET. WILL
LEAVE ALL ADVISORIES AND WARNINGS AS IS AT THIS TIME.

THE LARGE SCALE TROUGH WILL PIVOT OVER THE REGION TONIGHT. WHILE
COLD ADVECTION/NW FLOW WILL BE ONGOING...THERE WILL BE LITTLE MOISTURE
IN THE LOW LEVELS TO SUPPORT SNOW SHOWERS. WILL MAINTAIN A DRY
FORECAST TONIGHT WITH LOW TEMPERATURES FORECAST NEAR MET VALUES.

&&

.SHORT TERM /THURSDAY THROUGH SATURDAY/...
A SHORTWAVE DIGGING THROUGH THE UPPER TROUGH WILL BRING A
REINFORCING SHOT OF COLD AIR ON THURSDAY. BY AFTERNOON...A MORE
FAVORABLE NORTHWEST FETCH LOOKS TO BEGIN TO SETUP...WITH LAKE ERIE
SUPPORT. WITH THIS IN MIND...BROUGHT POP CHANCES UP THROUGH
AFTERNOON AND INTO THE EVENING HOURS. WITH INVERSION HEIGHTS
LIFTING INTO THE DENDRITIC GROWTH ZONE...THE BEST CHANCE FOR SOME
ACCUMULATION WILL BE THURSDAY NIGHT...ESPECIALLY NORTH OF I-80 AND
IN THE RIDGES.

SURFACE RIDGE WILL BUILD IN ON FRIDAY HELPING TO DRY OUT THE
ENTIRE ATMOSPHERE DURING THE MORNING HOURS. COULD SEE SOME LINGERING
FLURRIES ACROSS THE NORTH AND RIDGES FRIDAY MORNING...BUT THESE
TOO WILL END AS SUBSIDENCE AND THE DRIER AIR TAKES OVER. WHILE
TEMPERATURES WILL REMAIN BELOW SEASONABLE VALUES ON FRIDAY...WARM
ADVECTION SHOULD BRING TEMPERATURES CLOSER TO NORMAL BY SATURDAY
WITH HIGHS IN THE MID 40`S.

&&

.LONG TERM /SATURDAY NIGHT THROUGH TUESDAY/...
MODELS COMING INTO GOOD AGREEMENT WITH ANOTHER WARM UP FOR THE
WEEKEND. MODELS ARE STILL TRYING TO FIGURE OUT HOW MUCH PRECIP
WILL DEVELOP SATURDAY NIGHT AND SUNDAY WITH PASSING WAVES IN THE
ZONAL FLOW ALOFT. EXPECT MOST OF SATURDAY NIGHT TO BE DRY WITH A
SHOWER POSSIBLE BY SUNDAY MORNING. LOOKING LIKE A BETTER CHANCE
FOR SHOWERS SUNDAY...PARTICULARLY IN THE AFTERNOON...AHEAD OF AN
APPROACHING COLD FRONT.

AREA WILL DRY OUT MONDAY WITH ANOTHER COOL DOWN ON TUESDAY.

&&

.AVIATION /19Z WEDNESDAY THROUGH MONDAY/...
IFR TO CONTINUE AT MOST PA AND WV AIRPORTS THROUGH THIS AFTERNOON.
OHIO AIRPORTS MOSTLY VFR.  SNOW SHOULD BE ENDING RAPIDLY AND
VISIBILITIES SHOULD IMPROVE TO MVFR/VFR IN PA AND WV. CEILINGS
FORECAST TO REMAIN IFR INTO THE EARLY EVENING HOURS THEN IMPROVE
TO MVFR AS SLIGHTLY DRIER AIR MOVE IN AS SYSTEM PASSES AND WINDS
SHIFT MORE NORTHWEST

OUTLOOK.../WEDNESDAY NIGHT THROUGH SUNDAY/...
NON VFR DEVELOPING THURSDAY IN -SHSN...LINGERING ACROSS
NW PA INTO FRIDAY. NON-VFR SUNDAY IN -SHRA WITH THE NEXT
FRONT.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...WINTER STORM WARNING UNTIL 6 PM EST THIS EVENING FOR MDZ001.
OH...NONE.
PA...WINTER STORM WARNING UNTIL 6 PM EST THIS EVENING FOR PAZ074-
     076.
     WINTER WEATHER ADVISORY UNTIL 6 PM EST THIS EVENING FOR PAZ023-
     073-075.
WV...WINTER STORM WARNING UNTIL 6 PM EST THIS EVENING FOR WVZ023-
     041.
     WINTER WEATHER ADVISORY UNTIL 6 PM EST THIS EVENING FOR WVZ021-
     022.

&&

$$
Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather