Area Forecast Discussion
Issued by NWS Binghamton, NY

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FXUS61 KBGM 010253
AFDBGM

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BINGHAMTON NY
1053 PM EDT TUE JUN 30 2015

.SYNOPSIS...
SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH THE OVERNIGHT AS
UPPER LEVEL DISTURBANCES CROSS THE REGION. MORE SHOWERS AND
THUNDERSTORMS ARE EXPECTED ON WEDNESDAY AS A COLD FRONT CROSSES
THE AREA. HIGH PRESSURE WILL PROVIDE FAIR WEATHER FOR THE END OF
THE WEEK.

&&

.NEAR TERM /THROUGH WEDNESDAY/...
1045 PM UPDATE...
THINGS ACTUALLY TURNED FAIRLY ACTIVE THE LAST FEW HOURS DESPITE
EXPIRATION OF THE SVR WATCH...ESPECIALLY REGARDING LOCALIZED
FLOODING. SYRACUSE AREA THROUGH NORTHEASTERN ONONDAGA COUNTY IN
PARTICULAR HAS HAD REPEATED HEAVY THUNDERSTORMS/BACKBUILDING...2-3
BATCHES DEPENDING ON LOCATION...WHICH HAS RESULTED IN FLASH
FLOODING. NUMEROUS REPORTS OF WATER MAKING ROADS IMPASSABLE...CARS
STUCK IN WATER...WATER IN BASEMENTS AND THE LIKE WHICH IS COMMON
WHEN HEAVY RAIN STRIKES AND URBANIZED AREA. HEAVY RAIN HAS
OCCURRED ELSEWHERE IN OUR REGION AS WELL BUT PROBLEMS MUCH MORE
LOCALIZED AND MINOR. FINALLY...STORMS HAVE IGNITED IN WYOMING-
LUZERNE COUNTIES IN PA HEADING INTO LACKAWANNA...WHICH APPEARS TO
HAVE GONE SEVERE. WARNING UNTIL 1130 PM THERE DUE TO EXPECTED
GUSTS TO 60 MPH. THINGS WILL WIND DOWN AFTER MIDNIGHT BUT WILL
HAVE TO WATCH THINGS CAREFULLY THE NEXT 24 HRS SINCE ANY
ADDITIONAL RAINFALL COULD CAUSE PROBLEMS FOR AREAS THAT JUST
RECEIVED HEAVY RAIN.

645 PM UPDATE...
SVR TSTORM WATCH CONTINUES UNTIL 8PM FOR NEPA AND SULLIVAN CO
NY...THOUGH AT THIS POINT LOCALIZED HEAVY RAINFALL /ESPECIALLY
PIKE COUNTY/ APPEARS TO THE BE MORE OF A CONCERN. IT IS LIKELY
THAT WE WILL BE ABLE TO DROP THE WATCH AT 8PM AS
SCHEDULED...MEANWHILE...WE ALREADY HAVE A STATEMENT OUT FOR PIKE
COUNTY REGARDING LOCALIZED HEAVY RAIN AND WILL KEEP A CLOSE EYE ON
THAT AREA.

FURTHER NORTH...CONVECTION HAS BEEN PRETTY WIDELY SCATTERED THOUGH
WE DO HAVE A HEAVY RAINER CARRYING ACROSS NORTHERN ONONDAGA AT
THIS TIME. MEANWHILE...WELL MARKED WAVE NOW IN WESTERN PA WILL
MOVE THROUGH BETWEEN 10PM-2AM TO CAUSE ADDITIONAL SHOWERS-EMBEDDED
THUNDER. IF THINGS HOLD TOGETHER...AS MENTIONED BELOW...SHORT
FUSED FLASH FLOOD WATCH COULD BE NECESSARY FOR AREAS ALREADY
GETTING DECENT RAIN BEFOREHAND.

PREVIOUS DISCUSSION...
AT 4 PM...SFC ANALYSIS SHOWS A WARM FRONT DRAPED ACROSS THE ERN
CWA FROM THE VCNTY OF SYR DOWN THROUGH THE SUSQUEHANNA REGION INTO
NE PA. THIS BOUNDARY WILL MAKE SLOW PROGRESS EAST THROUGH EVENING.
ACTIVITY ALONG AND EAST OF THIS BOUNDARY IS WIDESPREAD WITH JUST
SCATTERED CONVECTION ELSEWHERE. INSTABILITY AND LOW LEVEL SHEAR IS
BEST ACROSS NE PA AND SRN NY WHERE THE WATCH CURRENTLY RESIDES. BY
EARLY EVENING INSTABILITY AND LOW LEVEL SHEAR WILL BOTH DECREASE,
REDUCING THE THREAT FOR SVR WEATHER. A MOIST SW FLOW WILL CONTINUE
OVER THE AREA THROUGH TONIGHT. A MID LEVEL SHORT WAVE CURRENTLY
MOVING THROUGH OHIO WILL LIFT NE AND ACROSS THE FA LATER THIS
EVENING. THIS FEATURE WILL KEEP CONVECTION GOING THROUGH AT LEAST
LATE EVENING. DUE TO RECENT WET WEATHER IF THIS SECOND ROUND OF
CONVECTION TAKES AIM AT NE PA A SHORT FUSE FLASH FLOOD WATCH MAY
BE NEEDED.

ON WEDNESDAY...H5 TROF AND SFC COLD FRONT WILL MOVE THROUGH FA
DURING THE LATE MORNING THROUGH AFTERNOON PERIOD. WIDESPREAD TO
SCATTERED CONVECTION WILL OCCUR WITH THIS BOUNDARY. INSTABILITY
LOOKS BEST FROM I81 EAST WHERE THE ATMOSPHERE WILL HAVE THE
LONGEST TIME TO DESTABILIZE. BULK SHEAR VALUES AND MID LEVEL FLOW
NOT AS SIGNIFICANT AS TODAY BUT STORMS MAINLY EAST OF I81 COULD
PRODUCE SOME GUSTY WINDS.

&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/...
UPPER LEVEL TROF WILL REMAIN OVER THE NE THROUGH THURSDAY
FOLLOWED BY UPPER LEVEL RIDGING THURSDAY NIGHT AND FRIDAY. AT THE
SFC HIGH PRES OVER THE UPPER GREAT LAKES WILL SLOWLY BUILD SOUTH
OVER THE FA BRINGING A PERIOD OF DRY WEATHER. THURSDAY WILL BE
COOL UNDER NW FLOW AND MAX TEMPS IN THE LOWER TO MIDDLE 70S CNTRL
NY AND MID/UPR 70S OVER NE PA. ON FRIDAY, ABUNDANT SUNSHINE WILL
ALLOW TEMPS TO REACH SEASONAL NORMALS.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
A TROF OVER LOWER ONTARIO WILL PRESS EASTWARD ON SATURDAY,
CAUSING A FEW SHOWERS AND THUNDERSTORMS LATER SATURDAY OVER NY AND
PA. A WEAK RIDGE WILL REBUILD FOR SUNDAY, WITH TEMPERATURES
PUSHING INTO THE 80S. THE RIDGE WILL KEEP WEATHER FAIR INTO MONDAY
BEFORE THE NEXT TROF SWINGS INTO THE REGION NEXT WEEK.

&&

.AVIATION /03Z WEDNESDAY THROUGH SUNDAY/...
00Z UPDATE...
LEFTOVERS OF AFTERNOON CONVECTION ARE PESTERING THE TERMINALS
EARLY IN THE TAF PERIOD...AND THEN MORE SHRA-EMBEDDED TSRA LATER
THIS EVENING ASSOCIATED WITH A WAVE ALOFT. WITH THE CONVECTION
MVFR TO BRIEF IFR CONDITIONS ARE POSSIBLE /CIG AND VIS/...THEN
BEHIND IT...FUEL ALT CIGS WILL SETTLE ACROSS THE TERMINALS...AND
EVEN EVENTUAL IFR KBGM-KELM-KAVP. IMPROVEMENT WILL OCCUR 12Z-15Z
BUT A COLD FRONT WILL PASS THROUGH WITH NEW SHRA- TSRA SHORTLY
THEREAFTER. PROB30 GROUPS INSERTED FOR ALL EXCEPT KAVP WHERE
CONFIDENCE IS LESS...SEE INDIVIDUAL TAFS FOR TIMING SPECIFICS.
GENERALLY SPEAKING FOR WINDS...LIGHT SE TO S OR VARIABLE THIS
EVENING...VEERING SW INTO WED MORNING THEN W BEHIND COLD FRONT
DURING THE DAY WITH GUSTS INTO MID TEENS RANGE.

.OUTLOOK...

WED NGT-EARLY THU...EARLY MORNING LOW CLOUDS OR FOG POSSIBLE FOR
SEVERAL TERMINALS...ESPECIALLY VALLEYS LIKE KELM.

MID MORNING THU THROUGH FRI...MAINLY VFR.

SAT...CHANCE OF SCT SHRA/TSRA AND ASSOCIATED RESTRICTIONS.

SUN...MAINLY VFR.

&&

.BGM WATCHES/WARNINGS/ADVISORIES...
PA...NONE.
NY...NONE.

&&

$$
SYNOPSIS...RRM
NEAR TERM...MDP/RRM
SHORT TERM...RRM
LONG TERM...DJP
AVIATION...MDP



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