124
FXUS62 KILM 270652
AFDILM
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WILMINGTON NC
252 AM EDT SAT JUN 27 2026
WHAT HAS CHANGED
A FEW STRONG WIND GUSTS ARE POSSIBLE THIS AFTERNOON ALONG A
LINE OF THUNDERSTORMS, MAINLY FOR NORTHERN PORTIONS OF THE AREA.
HOT AND HUMID CONDITIONS WILL PUSH HEAT INDICES ABOVE 100 FOR
MOST OF THE AREA TODAY AND SUNDAY. A PROLONGED PERIOD OF
DANGEROUS HEAT REMAINS LIKELY NEXT WEEK. AVIATION DISCUSSION
UPDATED FOR 06Z TAFS.
KEY MESSAGES
1) ISOLATED STRONG TO SEVERE STORMS POSSIBLE TODAY AND SUNDAY.
2) HEAT AND HUMIDITY BUILD TODAY AND SUNDAY.
3) PROLONGED AND DANGEROUS HEAT EXPECTED NEXT WEEK WITH LIMITED
RAIN CHANCES.
DISCUSSION
KEY MESSAGE 1... ISOLATED STRONG TO SEVERE STORMS POSSIBLE
TODAY AND SUNDAY.
RAPID DESTABILIZATION LATE THIS MORNING IS LIKELY TO SET THE
STAGE FOR SEA BREEZE CONVECTION EARLY THIS AFTERNOON. THE
INTRODUCTION OF DRY AIR ALOFT COULD LEAD TO A STRONG, ALBEIT
ISOLATED, WIND GUST. STIFF SYNOPTIC SOUTHERLY FLOW AT THE COAST
WILL DAMPEN THE FORCING AVAILABLE ALONG THE LEADING EDGE OF THE
SEA BREEZE, ESPECIALLY ONCE COLD POOLS CONGEST THE ENVIRONMENT.
INLAND AREAS WILL LIKELY SEE MORE ISOLATED CONVECTION ONCE
CONVECTIVE TEMPS ARE REACHED DURING THE EARLY TO MID AFTERNOON.
DOWNSLOPE FLOW WILL ALSO KEEP THE BOUNDARY LAYER TOO DRY FOR
ANYTHING MORE THAN ISOLATED SURFACE-BASED COVERAGE OF STORMS FOR
INLAND AREAS THIS AFTERNOON. SIMILAR TO COASTAL AREAS, ANY
STORMS THAT DEVELOP MAY PRODUCE A STRONG WIND GUST.
A WEAK SHORTWAVE TRAVERSING THE SOUTHERN APPALACHIANS IS
EXPECTED TO REACH THE I-95 CORRIDOR THIS EVENING. AN ONGOING
CLUSTER OF THUNDERSTORMS HARBORED BY THIS SHORTWAVE WILL PUSH
EASTWARD THROUGH THE CAROLINAS LATER TODAY, EXPANDING DURING
PEAK HEATING OVER WESTERN NC. AS THE CLUSTER MOVES EASTWARD,
SEVERE WEATHER CHANCES INCREASE DUE TO WARM TEMPERATURES AND
INCREASING SHEAR IN PORTIONS OF NC. THE TIMING OF THIS
CONVECTION WILL BE A KEY COMPONENT OF TODAY'S FORECAST WITH HREF
AND DETERMINISTIC SOLUTIONS BRING THE STORMS INTO OUR AREA JUST
BEFORE OR AROUND SUNSET. SPC HAS INCREASED THE SEVERE WEATHER
THREAT TO SLIGHT (LEVEL 2 OF 5) FOR A FEW DAMAGING WIND GUSTS
ALONG THIS LINE. THE BEST CHANCE FOR SEVERE WEATHER WILL BE
CENTRAL NC.
ISOLATED STORMS ARE EXPECTED ON SUNDAY, PRIMARILY ALONG THE
PIEDMONT TROUGH DURING THE AFTERNOON AND AHEAD OF A WEAK SURFACE
FRONT DURING THE EVENING. THE INITIAL ROUND OF CONVECTION WILL
BE ASSISTED BY ANOTHER WEAK SHORTWAVE. DRY AIR ALOFT COULD
SUPPORT A FEW DAMAGING WIND GUSTS. THE BEST CHANCE FOR STRONG
WIND GUSTS WILL BE FOR NORTHERN PORTIONS OF THE AREA.
KEY MESSAGE 2... HEAT AND HUMIDITY BUILD TODAY AND SUNDAY.
WARMER AND MORE HUMID TODAY THAN PREVIOUS DAYS. STIFF SOUTH
WINDS WILL KEEP COASTAL COMMUNITIES IN THE LOWER 90S, BUT THE
ADDITION OF HUMIDITY PROMISES LITTLE RELIEF. INLAND AREAS SHOULD
CLIMB INTO THE MID 90S. DEW POINTS WILL BE A LITTLE LOWER
INLAND, ESPECIALLY WITH WINDS SLIGHTLY MORE SW THAN PREVIOUS
DAYS AND DRIER AIR ALOFT TO LIMIT CLOUDS AND CONVECTION. HEAT
INDICES SHOULD EASILY REACH 100 THIS AFTERNOON; BETWEEN 100-104
AT THE COAST. HEAT-RELATED STRESS, ILLNESS, AND IMPACTS ARE
POSSIBLE --- ESPECIALLY FOR ANYONE WITHOUT EFFECTIVE COOLING
AND/OR ADEQUATE HYDRATION.
SUNDAY WILL LIKELY BE THE WARMEST DAY OF THE WEEKEND. WESTERLY
WINDS WILL PIN THE SEA BREEZE TO WITHIN A FEW MILES OF THE COAST
AND DOWNSLOPE FLOW WILL PUSH TEMPERATURES INTO THE MID 90S FOR
MOST OF THE FORECAST AREA. WEST WINDS TYPICALLY FAVOR BETTER
MIXING AND LOWER DEW POINTS AND THE 1-2 DEGREE DECREASE SHOULD
KEEP HEAT INDICES BETWEEN 100-105 ON SUNDAY AFTERNOON. COASTAL
AREAS MAY CREEP A LITTLE CLOSER TO THE HEAT ADVISORY THRESHOLD
WHERE COMPRESSIONAL HEATING AT THE SEA BREEZE COMBINES WITH
LOCALLY HIGHER DEW POINTS. REGARDLESS OF AN ACTIVE HEADLINE,
HEAT-RELATED STRESS, ILLNESS, AND IMPACTS ARE POSSIBLE ---
ESPECIALLY FOR ANYONE WITHOUT EFFECTIVE COOLING AND/OR ADEQUATE
HYDRATION.
KEY MESSAGE 3... PROLONGED AND DANGEROUS HEAT EXPECTED NEXT
WEEK WITH LIMITED RAIN CHANCES.
A WEAK COLD FRONT WILL MOVE SOUTH OF THE REGION ON MONDAY. THIS
MAY BRING A BRIEF REDUCTION IN HEAT AND HUMIDITY LEVELS THROUGH
TUESDAY IN NE FLOW. SOUTHEASTERLY FLOW DEVELOPS ON TUESDAY
EVENING AND CONTINUES THROUGH MUCH OF NEXT WEEK WITH HIGH
PRESSURE OFFSHORE. A STRONG RIDGE WILL AMPLIFY OVER THE EASTERN
US THROUGH MID WEEK AND PERSIST INTO THE HOLIDAY WEEKEND. AIR
TEMPERATURES COULD APPROACH RECORD HIGHS LATE NEXT WEEK.
COMBINED HEAT AND HUMIDITY WILL PRODUCE PROLONGED AND DANGEROUS
HEAT INDICES, ESPECIALLY LATE NEXT WEEK. EXTREME HEAT WILL BE
CENTERED AROUND THE JULY 4TH HOLIDAY. THE RIDGE AND DRY AIR
ALOFT WILL PUT A LID ON RAIN CHANCES FOR MUCH OF NEXT WEEK.
AVIATION /06Z SATURDAY THROUGH WEDNESDAY/
STRATUS WILL IMPACT SELECT TERMINALS EARLY THIS MORNING.
COASTAL TERMINALS MAY SEE A BRIEF PERIOD OF MVFR, PRIMARILY DUE
TO DEBRIS FROM EARLIER CONVECTION AND SOME MARINE INFLUENCE
(MAINLY CRE). INLAND TERMINALS MAY SEE SOME STUBBORN
RESTRICTIONS DUE TO YESTERDAY'S RAINFALL AND LIGHT WINDS.
STRATUS SHOULD BE FAVORED, BUT SOME SHALLOW GROUND FOG IS ALSO
POSSIBLE.
VFR DEVELOPS SHORTLY AFTER SUNRISE WITH RAPID MIXING AND
INCREASING SSW WINDS. THE SEA BREEZE WILL DEVELOP CONVECTION
AROUND NOON. ILM IS FAVORED WITH THE BEST CHANCE OF RAIN, BUT
INCLUDED A PROB30 FOR CRE/MYR. SSW WINDS WILL KEEP SEA BREEZE
CONVECTION WELL EAST OF INLAND TERMINALS THIS AFTERNOON. THE
BEST CHANCE FOR THUNDERSTORMS WILL BE A DEGRADING LINE OF STORMS
WORKING THEIR WAY ACROSS NC LATE THIS AFTERNOON AND THIS
EVENING. LBT HAS THE BEST CHANCE OF SEEING RESTRICTIONS; AN
ISOLATED STRONG STORM COULD BE POSSIBLE DURING THIS TIME. ALSO
CAN'T RULE OUT A STORM ALONG THE PIEDMONT TROUGH DURING THE MID
AFTERNOON, BUT COVERAGE SHOULD BE LIMITED.
EXTENDED FORECAST... STRATUS WILL BE POSSIBLE AGAIN TONIGHT.
STORMS ARE LIKELY ON SUNDAY AND SUNDAY NIGHT AHEAD OF A COLD
FRONT. FRONT LINGERS MONDAY WITH ISOLATED TO SCATTERED STORMS.
VFR TUESDAY AND WEDNESDAY.
MARINE
WINDS INCREASE FURTHER SATURDAY AND VEER SOUTHWESTERLY AS AN
AREA OF LOW PRESSURE TRAVERSES THE MID-ATLANTIC. SUSTAINED WINDS
UP TO 20 KNOTS ARE POSSIBLE NEAR THE COAST THIS AFTERNOON. A
FEW GUSTS TO 25 KNOTS ARE ALSO POSSIBLE. RECREATIONAL BOATERS
SHOULD BE CAUTIOUS IN AREA INLETS ON SATURDAY.
AS THE SURFACE LOW SHIFTS OFFSHORE SUNDAY, WINDS DIMINISH TO
10-15 KNOTS, WHILE REMAINING GENERALLY SOUTHERLY TO
SOUTHWESTERLY. SEAS GRADUALLY SUBSIDE TO 2-3 FT OUT TO 20 NM,
BUT REMAIN ELEVATED AT 3-4 FT OUT TO 60 NM.
A BACK DOOR COLD FRONT WILL DROP SOUTHWARD THROUGH THE REGION
LATE SUNDAY INTO MONDAY. NORTHEASTERLY FLOW BEHIND THE FRONT
WILL PEAK AROUND 15 KNOTS ON MONDAY AFTERNOON. SEAS RESPOND BY
BUILDING TO 3-4 FEET IN THE NEARSHORE WATERS, 4-5 FEET IN
OFFSHORE NC WATERS.
ILM WATCHES/WARNINGS/ADVISORIES
NC...BEACH HAZARDS STATEMENT FROM 6 AM EDT THIS MORNING THROUGH
THIS EVENING FOR NCZ106-108.
SC...NONE.
MARINE...NONE.
WHAT HAS CHANGED...ILM
KEY MESSAGES...21
DISCUSSION...21
AVIATION...21
MARINE...21/CBL
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