200
FXUS62 KILM 100015
AFDILM
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WILMINGTON NC
815 PM EDT TUE JUN 9 2026
WHAT HAS CHANGED
AVIATION DISCUSSION UPDATED WITH 00Z TAF ISSUANCE.
PREVIOUS...
DISCUSSIONS UPDATED. TEMPERATURES FOR LATE WEEK HAVE BEEN
REDUCED SLIGHTLY TO ACCOUNT FOR AN ONGOING WARM HIGH
TEMPERATURE BIAS.
KEY MESSAGES
1) INCREASINGLY HOT AND HUMID CONDITIONS ARE EXPECTED THROUGH LATE
WEEK WITH VERY LIMITED CHANCES FOR SHOWERS OR STORMS.
2) LOW RAIN CHANCES DURING THE WEEK BECOME ELEVATED OVER THE WEEKEND
AHEAD OF A COLD FRONT.
DISCUSSION
KEY MESSAGE 1... INCREASINGLY HOT AND HUMID CONDITIONS ARE EXPECTED
THROUGH LATE WEEK WITH VERY LIMITED CHANCES FOR SHOWERS OR STORMS.
KEY MESSAGE 1 DESCRIPTION...MID-UPPER RIDGING WILL REMAIN IN CONTROL
THIS WEEK WITH ITS AXIS STAYING WEST OF THE AREA WHILE HIGH PRESSURE
DOMINATES OFFSHORE AROUND BERMUDA. AS THE RIDGE STRENGTHENS ON
THURSDAY AND SHIFTS TOWARDS THE AREA ON FRIDAY, TEMPERATURES ARE
EXPECTED TO RISE WELL-ABOVE NORMAL, WITH LOW-MID 90S EXPECTED AWAY
FROM THE COAST ON THURSDAY AND MID-UPPER 90S ON FRIDAY. THE SEA
BREEZE WILL OFFER RELIEF CLOSER TO THE COAST. HOWEVER, AS THE FLOW
ALOFT BECOMES MORE WESTERLY ON FRIDAY, EXPECT THE SEA BREEZE TO HAVE
A HARDER TIME SHIFTING INLAND, ALLOWING FOR EVEN COASTAL AREAS TO
REACH THE LOW 90S. ALTHOUGH INSTABILITY WILL INCREASE AS
TEMPERATURES RISE, NO MORE THAN ISOLATED POP-UP SHOWERS AND STORMS
ARE EXPECTED THROUGH THE END OF THE WEEK, AS DRY AIR AND SUBSIDENCE
ALOFT INHIBIT DEVELOPMENT. HEAT INDEX VALUES SHOULD REACH THE UPPER
90S TO LOW 100S ON THURSDAY AND AT LEAST INTO THE LOW 100S INLAND ON
FRIDAY. WHETHER DEW POINTS STAY HIGH ENOUGH TO SUPPORT 105F OR
GREATER FOR 2+ HOURS DURING THE AFTERNOON IS QUESTIONABLE AS
MODEL GUIDANCE THIS TIME OF YEAR TENDS TO OVERESTIMATE DEW
POINTS.
THE RIDGE AXIS IS EXPECTED TO BE SHOVED EASTWARD FRIDAY NIGHT INTO
SATURDAY AS A COLD FRONT APPROACHES FROM THE NORTHWEST. ALTHOUGH
TEMPERATURES WILL STILL END UP WELL-ABOVE NORMAL ON SATURDAY DUE TO
THE RIDGE AXIS BEING NEARBY, INCREASED AFTERNOON CLOUDINESS AND
ISOLATED TO WIDELY SCATTERED SHOWERS/STORMS SHOULD GENERALLY PREVENT
MAX TEMPERATURES FROM REACHING THE SAME LEVELS AS THOSE SEEN ON
FRIDAY, ALTHOUGH THIS MAY BE ONLY 1-3F LOWER. BY SUNDAY, THE RIDGE
AXIS SHOULD BE FAR ENOUGH OFFSHORE AND THE FRONT SHOULD BE OVER OR
NEAR THE AREA, PROVIDING SCATTERED SHOWERS AND STORMS AND SOME
RELIEF FROM THE HEAT.
KEY MESSAGE 2... LOW RAIN CHANCES DURING THE WEEK BECOME ELEVATED
OVER THE WEEKEND AHEAD OF A COLD FRONT.
KEY MESSAGE 2 DESCRIPTION... WITH A MID-UPPER RIDGE AXIS WEST OF THE
AREA, THE COVERAGE OF SHOWERS AND STORMS SHOULD REMAIN ISOLATED
THROUGH THE END OF THE WEEK. HOWEVER, GUIDANCE TOOLS ARE HINTING AT
A SOMEWHAT HIGHER COVERAGE OF CONVECTION OVER THE WESTERN HALF OF
THE FORECAST AREA ON THURSDAY AS A WEAK SHORTWAVE TROUGH COMES IN
AND HELPS OUT THE SURFACE TROUGH OVER THE PIEDMONT REGION. ALTHOUGH
SUFFICIENT INSTABILITY WILL BE PRESENT FOR THUNDERSTORMS, FORECAST
SOUNDINGS DEPICT A CONSIDERABLE AMOUNT OF DRY AIR IN THE MID-UPPER
TROPOSPHERE, WHICH WILL INHIBIT DEVELOPMENT AND KEEP COVERAGE
LIMITED.
OVER THE WEEKEND, THE MID-UPPER RIDGE AXIS WILL SHIFT EASTWARD AS A
SURFACE COLD FRONT PUSHES SOUTHEAST. THIS FRONT WILL SLOW DOWN AS IT
MOVES EAST OF THE APPALACHIANS INTO THE RIDGE, BUT ITS PRESENCE
SHOULD INCREASE THE COVERAGE OF AFTERNOON SHOWERS AND STORMS TO
SCATTERED FOR BOTH SATURDAY AND SUNDAY. AS IS TYPICAL FOR FRONTS
THIS TIME OF YEAR, IT SHOULD STALL NEAR OR OVER THE AREA BEFORE
LIFTING BACK NORTHWESTWARD ON SUNDAY. THEREAFTER, GUIDANCE TOOLS
DIVERGE IN THE HANDLING OF UPSTREAM TROUGHING, WHICH SHOULD BRING
ANOTHER COLD FRONT AND INCREASED RAIN CHANCES INTO THE AREA EARLY
NEXT WEEK.
AVIATION /00Z WEDNESDAY THROUGH SUNDAY/
PLENTY OF LOW LEVEL MOISTURE AVBL AS A RELATIVELY STATIONARY
FRONTAL BOUNDARY DRAPED ACROSS THE AREA IS PROGGED TO BASICALLY
DISSIPATE OVERNIGHT INTO WED. SFC RIDGING WILL EXTEND ACROSS
THE AREA FROM THE OFFSHORE HIGH DURING WED. THE SFC RIDGE AXIS
WILL DROP SOUTH OF THE AREA BY LATE WED FOLLOWED BY THE
DEVELOPMENT OF THE SFC PIEDMONT TROF. WITH CONTINUED DRY AIR
ALOFT, ANY CONVECTION THAT DEVELOPS THRU SUNSET WILL BE SHALLOW
BASED. TOO ISOLATED TO INCLUDE IN ANY OF THE TERMINALS. LOOKING
AT LOW STRATUS OR STRATUS FRACTUS AGAIN TONIGHT THRU 14Z WED,
LIKELY IN THE MVFR CATEGORY BUT POSSIBLY DIPPING INTO THE IFR
CATEGORY, ESPECIALLY INLAND TERMINALS. AFTER 14Z, WILL SEE
SCT/BKN CU THAT MAY INITIALLY LIE IN MVFR CATEGORY BUT SHOULD
LIFT TO 3500-4500 FT BY MIDDAY THE LATEST. HAVE
INCLUDED/CONTINUED A PROB30 TSTORM GROUP FOR LBT ONLY DURING THE
18Z-24Z TIME LINE. WINDS GENERALLY SE-S 5 KT OR LESS INTO THE
OVERNIGHT. FURTHER VEERING TO SW 5 TO 10 KT BY MID TO LATE
DAYTIME WED MORNING AND THRU THE REMAINDER OF THE DAY. EXCEPTION
WILL BE THE COASTAL TERMINALS WHERE AN ACTIVE AFTN/EVENING SEA
BREEZE WILL BACK WINDS TO THE S 10-15 KT.
EXTENDED FORECAST...MVFR/IFR CEILINGS POSSIBLE AGAIN EARLY THU
MORNING FROM STRATUS. FLIGHT RESTRICTIONS FROM WIDELY SCATTERED
AFTERNOON/EVENING STORMS ARE POSSIBLE EACH DAY THROUGH FRIDAY,
MAINLY INLAND, BEFORE AN INCOMING FRONT LIKELY BRINGS A GREATER
COVERAGE OF SHOWERS AND STORMS OVER THE WEEKEND. OTHERWISE VFR.
MARINE
HIGH PRESSURE SHIFTING OFF THE MID-ATLANTIC COAST TODAY WILL RESULT
IN WINDS VEERING FROM EASTERLY THIS AFTERNOON TO SOUTHERLY TONIGHT.
AS THIS HIGH SHIFTS TOWARDS BERMUDA, EXPECT SOUTHWESTERLY WINDS BY
EARLY THURSDAY WITH SPEEDS BETWEEN 10-20 KTS THROUGH FRIDAY NIGHT AS
A PIEDMONT TROUGH SETS UP AND TIGHTENS THE PRESSURE GRADIENT AGAINST
THE HIGH. WITH VERY WARM TEMPERATURES ON LAND, EXPECT A HEALTHY SEA
BREEZE TO DEVELOP AS WELL, AND RESULT IN GUSTY SOUTH TO SSE WINDS
NEAR THE COAST WHICH CAN TOP OUT AROUND 20-25 KTS DURING THE
AFTERNOON. AS A COLD FRONT SHIFTS IN FROM THE NORTHWEST AND THE
BERMUDA HIGH MOVES AWAY, WINDS SLACKEN OVER THE WEEKEND.
SEAS WILL RUN GENERALLY 1-3 FT IN THE 0-20NMI ZONE AND 2-4 FT IN THE
20-60NMI ZONE. AN EASTERLY 8 SEC SWELL WILL PREDOMINANTLY CONTRIBUTE
TO THE WAVE SPECTRUM THROUGH WEDNESDAY WITH WAVES OF 2-3 FT BEFORE
SUBSIDING TO 1-2 FT ON THURSDAY AND 1 FT OR LESS FROM FRIDAY ONWARD.
ENHANCED WINDS OVER THURSDAY AND FRIDAY WILL LEAD TO WIND WAVES
CONTRIBUTING 2-3 FT (3-4 FT) WAVES IN THE 0-20NMI (20-60NMI) ZONES
DURING THOSE DAYS. LINGERING SOUTHERLY WIND WAVES OF 1-3 FT WILL
CONTINUE ON SATURDAY WITH A 1 FT OR LESS EASTERLY SWELL.
ILM WATCHES/WARNINGS/ADVISORIES
NC...NONE.
SC...NONE.
MARINE...NONE.
WHAT HAS CHANGED...DCH/ABW
KEY MESSAGES...ABW
DISCUSSION...ABW
AVIATION...DCH
MARINE...ABW
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