606
FXUS61 KBGM 130537
AFDBGM
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BINGHAMTON NY
137 AM EDT MON JUL 13 2026
WHAT HAS CHANGED
NO SIGNIFICANT CHANGES WERE MADE TO THE FORECAST WITH THIS UPDATE.
CURRENT MODEL GUIDANCE REMAINS VERY CONSISTENT FOR THE UPCOMING WEEK.
KEY MESSAGES
1) MAINLY DRY AND WARM WEATHER IS EXPECTED INTO MONDAY.
HOWEVER, THERE WILL BE AN ISOLATED SHOWER OR TWO OR TONIGHT
ACROSS NORTHEAST PA.
2) HOT, SUNNY AND DRY WEATHER WILL TAKE HOLD OVER THE FORECAST AREA
FOR TUESDAY AND WEDNESDAY. HEAT INDICES MAY REACH THE MID-90S TO
AROUND 100 DEGREES IN SOME LOCATIONS.
3) AN UPPER LEVEL TROUGH MOVING OVER THE NORTHEAST LIKELY BRINGS
TEMPERATURES BACK DOWN CLOSER TO AVERAGE BY THE END OF THE WEEK,
WITH A FEW SHOWER CHANCES BY NEXT WEEKEND.
DISCUSSION
KEY MESSAGE 1...
A SCATTERED TO BROKEN CUMULUS CLOUD FIELD HAS DEVELOPED ACROSS THE
TWIN TIERS, CATSKILLS AND NE PA EARLY THIS AFTERNOON. SURFACE DEW
POINTS ARE CERTAINLY MUCH DRIER THAN PREVIOUS DAYS THOUGH, NOW
RANGING FROM THE UPPER 40S TO 50S IN MOST LOCATIONS. LATEST
MESOANALYSIS FROM SPC/RAP DATA SHOWS NO SURFACE BASED CAPE ACROSS
CENTRAL NY, WITH BETWEEN 100-500 J/KG IN PLACE OVER NE PA...WITH THE
HIGHER END VALUES OVER WESTERN LUZERNE COUNTY. WITH THE DRIER LOW
LEVEL AIR MASS IN PLACE, MLCAPE IS EVEN LOWER, LESS THAN 100 J/KG
EVEN IN NE PA, WITH MLCIN STILL IN PLACE. FORECASTS FROM THE RAP
SHOW THAT MLCAPE BUMPS UP TO PERHAPS 200 J/KG OVER PORTIONS OF THE
WYOMING VALLEY AND SURROUNDING HILLS LATER THIS AFTERNOON.
THEREFORE, LEFT IN ISOLATED SHOWER/T'STORM CHANCES HERE BETWEEN 2-8
PM THIS AFTERNOON AND EVENING. THE REST OF THE FORECAST AREA IS
EXPECTED TO REMAIN PARTLY TO MOSTLY SUNNY, DRY AND WARM THROUGH THIS
EVENING. HIGHS REACH INTO THE 80S AREAWIDE.
TONIGHT FEATURES MOSTLY CLEAR CONDITIONS, LIGHT WINDS AND PERHAPS
JUST SOME VERY PATCHY RIVER VALLEY FOG. LOWS WILL BE IN THE UPPER
50S TO LOWER 60S.
HIGH PRESSURE IS IN PLACE ON MONDAY, BRINGING DRY AND VERY WARM
CONDITONS. HUMIDITY LEVELS WILL REMAIN LOW, WITH DEW POINTS IN THE
MID-50S TO LOW 60S EXPECTED. SKIES REMAIN SUNNY TO MOSTLY SUNNY AND
HIGH TEMPERATURES WILL REACH WELL INTO THE 80S...WITH EVEN LOW 90S
FOR THE MOHAWK VALLEY AND SYRACUSE METRO AREA. CAN'T RULE OUT AN
ISOLATED AFTERNOON SHOWER OR T'STORM NEAR OR JUST SOUTH OF THE UTICA
AND SYRACUSE AREAS AS A WEAK BOUNDARY PUSHES THROUGH. MODEL
SOUNDINGS DO SHOW JUST ENOUGH MOISTURE, LIFT AND INSTABILITY (MLCAPE
500-1000 J/KG NORTH OF THE NY SOUTHERN TIER) TO POTENTIALLY INITIATE
SOME CONVECTION. OTHERWISE, EXPECT GENERALLY LIGHT SOUTHWEST WINDS
UNDER 10 MPH THROUGH THE DAY.
KEY MESSAGE 2...
UPPER LEVEL HEIGHTS RISE THROUGH THE DAY ON TUESDAY, AS THE LARGE
HEAT DOME SHIFTS EAST FROM THE GREAT LAKES REGION. 500MB HEIGHTS ARE
PROGGED TO REACH 594DM EARLY TUESDAY AFTERNOON, ALONG WITH 1000-
500MB THICKNESSES OF 582DM AND 850MB TEMPERATURES AT +23C. WITH A
FAIRLY DRY AIR MASS STILL IN PLACE (TDS 60-68F) AND FULL SUNSHINE
EXPECTED, DAYTIME HIGHS WILL REACH THE UPPER 80S TO MID-90S OVER THE
AREA. LOWERED THESE NUMBERS 1-2 DEGREES FROM THE LIKELY OVERLY
AGGRESSIVE NBM MAX T GUIDANCE, WHICH HAD WIDESPREAD MID TO UPPER 90S
IN THE VALLEYS. THE HOTTEST PART OF THIS INCOMING AIR MASS APPEARS
TO SETTLE IN ACROSS CENTRAL NY, WITH NE PA STILL BEING HOT, BUT NOT
AS ANOMALOUS. WITH THE ABOVE MENTIONED DEW POINTS IN THE 60S, HEAT
INDICES WILL REACH 95 TO 102F IN THE VALLEYS OF CENTRAL NY. IF
CONFIDENCE CONTINUES TO BUILD IN THIS SCENARIO, HEAT ADVISORIES MAY
VERY WELL BE NEEDED FOR PARTS OF CENTRAL NY. HEAT INDICES IN NE PA'S
VALLEYS LOOK TO MAX OUT IN THE MID-90S TUESDAY AFTERNOON...BELOW
HEAT ADVISORY CRITERIA. SOUNDINGS SHOW A VERY STRONG CAP IN PLACE
BETWEEN ABOUT 650-850MB ACROSS THE ENTIRE AREA TUESDAY AFTERNOON AND
EVENING; THIS WILL PREVENT ANY CONVECTION FROM FORMING EVEN WITH
SURFACE BASED CAPE VALUES BETWEEN 1500-3000 J/KG EXPECTED. THE LFC
REMAINS NEAR 10K FT OR 700MB, WITH DRY AIR IN PLACE AT AND ABOVE
THIS LEVEL IN THE FORECAST SOUNDINGS FROM THE 12Z NAM. THERE WILL
ALSO BE SOME BREEZY WEST WINDS AT TIMES BETWEEN 10-20 MPH.
TUESDAY NIGHT WILL SEE MAINLY CLEAR SKIES FOR MOST OF THE AREA. SOME
INCREASING CLOUDS ARE POSSIBLE ACROSS THE MOHAWK VALLY AND ONEIDA
COUNTY AS SHOWERS AND T'STORMS LIKELY PASS BY TO THE NORTHEAST WITH
A SHORTWAVE DISTURBANCE. LOWS WILL BE QUITE WARM ONLY DIPPING INTO
THE UPPER 60S TO MID-70S.
THE UPPER LEVEL RIDGE FLATTENS BY WEDNESDAY, WITH HEIGHTS FALLING
BACK TO 585DM AT 500MB AS THE NORTHWEST FLOW INCREASES. 850MB
TEMPERATURES ARE EXPECTED TO REACH +17C IN THE MID AFTERNOON HOURS.
A DRIER AND COOLER AIR MASS DOES BEGIN TO ADVECT INTO THE AREA FROM
SOUTHERN ONTARIO THROUGH THE DAY. WITH A WARM START IN THE 70S,
MODEL GUIDANCE IS STILL SHOWING TEMPERATURES PEAKING IN THE MID-80S
TO LOW 90S ACROSS THE AREA (PERHAPS STILL MID-90S WYOMING VALLEY).
SURFACE DEW POINTS START IN THE MID TO UPPER 60S IN THE MORNING, BUT
THEN FALL INTO THE 50S AND LOW 60S BY AFTERNOON. BREEZY NORTHWEST
WINDS ARE EXPECTED BETWEEN 10-20 MPH ONCE AGAIN. MAX HEAT INDICES
WILL ONLY PEAK IN THE 80S TO LOW 90S ACROSS CENTRAL NY, WITH UPPER
80S TO MID-90S IN NE PA. IT'S POSSIBLE THE WYOMING VALLEY REGION IN
LUZERNE COUNTY COULD SEE A FEW HOURS WITH A HEAT INDEX IN THE 95-
100F RANGE...WHICH IS STILL CLOSE TO HEAT ADVISORY CRITERIA HERE.
OTHERWISE, THE AIR MASS WILL REMAIN DRY AND CAPPED WITH MOSTLY SUNNY
SKIES EXPECTED AREAWIDE.
KEY MESSAGE 3...
UPPER LEVEL TROUGH DEEPENS OVER THE NORTHEAST US FOR THE END OF THE
UPCOMING WORK WEEK. MOST GUIDANCE KEEPS IT DRY OVER THE AREA, WITH A
NORTHWEST FLOW CONTINUING. WITH PLENTY OF SUNSHINE AND NO STRONG
COLD AIR ADVECTION HIGH TEMPERATURES REMAIN SEASONABLY WARM, IN THE
UPPER 70S TO MID 80S RIGHT INTO NEXT WEEKEND. MOISTURE DOES
GRADUALLY INCREASE FROM THE WEST AGAIN BY NEXT WEEKEND AND THERE
COULD BE SOME SCATTERED SHOWERS AROUND FROM TIME TO TIME. THUNDERSTORM
CHANCES REMAIN LOW, WITH VERY LIMITED INSTABILITY EXPECTED.
AVIATION /06Z MONDAY THROUGH FRIDAY/
VFR CONDITIONS ARE EXPECTED AT ALL TERMINALS THROUGH THE TAF
PERIOD. A SCATTERED TO BROKEN CLOUD DECK AROUND 5000 FT. AGL
NEAR AVP IS EXPECTED TO CLEAR EARLY THIS MORNING AS LINGERING
LIGHT SHOWER ACTIVITY DIMINISHES.
THERE CAN BE SOME ISOLATED POP UP SHOWERS OR THUNDERSTORMS THIS
AFTERNOON BEGINNING AROUND 18Z-20Z ACROSS CNY, MAINLY NEAR ITH,
ELM AND BGM, BUT CONFIDENCE IN THE TIMING AND PLACEMENT OF THIS
ISOLATED CONVECTION IS TOO LOW TO INCLUDE IN THE TAF FORECAST
AT THIS TIME. CALM TO LIGHT AND VARIABLE WINDS EARLY THIS
MORNING BECOME WSW TO WNW THIS AFTERNOON WITH GUSTS UP TO 15 KT.
OUTLOOK:
TUESDAY NIGHT THROUGH FRIDAY...MAINLY VFR; PATCHY MORNING LOW
CLOUDS/FOG POSSIBLE.
BGM WATCHES/WARNINGS/ADVISORIES
PA...NONE.
NY...NONE.
DISCUSSION...MJM
AVIATION...BJT/DK
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