114
FXUS61 KPBZ 271155
AFDPBZ
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
755 AM EDT SUN SEP 27 2026
WHAT HAS CHANGED
UPDATED KEY MESSAGE 1. UPDATED AVIATION DISCUSSION FOR 06Z
TAFS.
KEY MESSAGES
1) LITTLE IMPACTS FROM THE NOR'EASTER THROUGH MONDAY
2) CONTINUED DRY STRETCH OF WEATHER BEFORE A LATE WEEK FRONT
RETURNS PRECIPITATION, WHILE ABOVE NORMAL TEMPERATURES COME
BACK.
DISCUSSION
KEY MESSAGE 1...
UPPER LOW WILL BE NEARLY STATIONARY ALONG THE NEW JERSEY COAST
THE NEXT 24 HOURS BEFORE IT LIFTS NORTHEAST ACROSS NEW ENGLAND
ON MONDAY. GUIDANCE HAS BEEN CONSISTENT ON PUSHING WRAP-AROUND
CLOUDS AND PRECIPITATION IN WARM ADVECTION REGIME INTO MAINLY
THE NORTHEAST PORTION OF THE FORECAST AREA BY THIS EVENING.
LIGHT RAIN IS LIKELY IN THE JEFFERSON AND CLARION COUNTY AREAS,
WITH A SLIGHT CHANCE ELSEWHERE ALONG THE RIDGES AND GENERALLY
EAST OF PITTSBURGH.
LOW LEVEL DRY AIR HAS BEEN IN PLACE BELOW 500 MB AND THAT WILL
LIMIT THE WESTERN EXTENT OF MEASURABLE PRECIPITATION TONIGHT.
KEY MESSAGE 2...
COME TUESDAY NIGHT, CLOUDS ASSOCIATED WITH THE NOR'EASTER WILL
BE OUT OF OUR AREA. THIS ALLOWS A TRANSITORY H5 RIDGE AXIS TO
MOVE IN RETURNING DRY AND WARMER WEATHER. THURSDAY WILL BE THE
WARMEST DAY OF THE WEEK WITH WIDESPREAD 70S. LATEST PROBS OF
MAXT 80F OR GREATER CONTINUE TO INCREASE FOR NORTHERN WV,
SOUTHEASTERN OH, AND SOUTHWESTERN PA AS THEY NOW RESIDE BETWEEN
40-60%. THIS BY NO MEANS IS NEAR RECORD TERRITORY AS BENCHMARKS
FOR 1 OCTOBER ARE STILL NEAR 90F AT MOST CLIMATE SITES. HEAT
RISK AT THIS JUNCTURE REMAINS IN THE MINOR CATEGORY.
WE RESIDE JUST SOUTH OF A BAROCLINIC ZONE WHICH IS ALONG LAKE ERIE
INTO UPSTATE NEW YORK PLACING US IN THE WARM SECTOR FRIDAY AND
SATURDAY. THE TREND CONTINUES FOR DRY WEATHER, HOWEVER A WEAK
IMPULSE COULD TRAVERSE GENERATING SCATTERED SHOWERS. FOR NOW, PROBS
BETWEEN 20-40% HAVE BEEN CONSISTENT IN THE WARM SECTOR. WITH
INCREASED MOISTURE IN THE COLUMN, FORECAST HIGHS PULL BACK A LITTLE
ON DAY 6 AND 7 TO THE LOWER TO MID 70S, WHILE OVERNIGHT LOWS NEAR 60
ARE PROJECTED WITH ABOVE AVERAGE CONFIDENCE.
FOR LOCATIONS WHO DO NOT RECEIVE RAINFALL SUNDAY NIGHT OR MONDAY
THEN NONE IS EXPECTED THE BALANCE OF SEPTEMBER.
AVIATION /12Z SUNDAY THROUGH THURSDAY/
LIGHT RAINFALL REMAINS POSSIBLE ACROSS OUR EASTERN PORTS THIS
EVENING ON WESTERN PERIPHERY OF COASTAL STORM WITH CLOUDS AND
PRECIPITATION BACKING IN FROM EAST OF THE MOUNTAINS. GRADUAL
MOISTENING OF THE COLUMN WILL RESULT IN VFR CEILINGS GRADUALLY
DROPPING TO MVFR IN THE EVENING.
CEILINGS WILL CONTINUE TO DROP BECOMING IFR AT FKL AND DUJ
BY TONIGHT. TOMORROW MORNING, IFR CEILINGS ARE LIKELY AS FAR
WEST AS KPIT. THERE IS GREATER THAN A 60% PROBABILITY OF IFR
CEILINGS STICKING AROUND THROUGH MONDAY MORNING FOR MOST.
OUTLOOK...
RESTRICTIONS WILL GRADUALLY IMPROVE DURING THE DAY ON MONDAY.
DUE TO THE CHANCE FOR RADIATION FOG, THERE IS CHANCE FOR THEM
TO RETURN TUESDAY MORNING, OTHERWISE CONDITIONS WILL REMAIN VFR
UNTIL THE NEXT DISTURBANCE MOVES INTO THE AREA MID TO LATE WEEK.
PBZ WATCHES/WARNINGS/ADVISORIES
PA...NONE.
OH...NONE.
WV...NONE.
DISCUSSION...CRAVEN
AVIATION...CRAVEN/LUPO
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