948
FXUS62 KMHX 191030
AFDMHX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEWPORT/MOREHEAD CITY NC
630 AM EDT SUN JUL 19 2026
WHAT HAS CHANGED
HEAT ADVISORY HAS BEEN ISSUED FOR MOST OF MAINLAND ENC.
MARINE HEADLINES HAVE BEEN SLIGHTLY TWEAKED FOR TIMING, LARGEST
CHANGE WAS THE EXTEND THE PAMSOUND SCA INTO TONIGHT.
AVIATION DISCO UPDATED.
KEY MESSAGES
1) HOT AND HUMID FOR THE NEXT FEW DAYS. HEAT HEADLINES ACTIVE
FOR TODAY AND POTENTIALLY AGAIN ON TUE AND WED.
2) UNSETTLED PATTERN THROUGH MIDDLE OF THE UPCOMING WEEK. RISK
OF STRONG TO SEVERE THUNDERSTORMS AND HEAVY RAINFALL.
3) AFTER A STRONG FRONT MOVES THROUGH THE AREA LATE WED INTO
THU, A BRIEF REPRIEVE FROM THE HEAT END OF NEXT WEEK, THOUGH
SHOWERS AND TSTORMS CHANCES REMAIN ABOVE CLIMO UNTIL NEXT
WEEKEND.
DISCUSSION
KEY MESSAGE 1...HOT AND HUMID CONDITIONS WILL CONTINUE THROUGH
THE WEEKEND. HEAT ADV IN PLACE FOR SUN FOR ALL BUT ONE ZONE OF
MAINLAND ENC. HEAT INDEX VALUES 105-110 DEG THROUGH EARLY
EVENING. WE WILL SEE A DIP IN HEAT MON WITH GREATER CLOUD
COVERAGE THROUGH THE DAY AND MORE RAIN HELPING BUMP DOWN MAXTS
INTO THE UPPER 80S AND LOW 90S, BUT SWERN ZONES MAY STILL
REQUIRE HEAT HEADLINES. TUE AND WED MAXTS CLIMB BACK INTO THE
LOW 90S FOR MOST AND AFTERNOON TDS APPROACHING 80DEG WILL BRING
HEAT HEADLINES BACK INTO PLAY.
KEY MESSAGE 2...THERE ARE SEVERAL FACTORS EXPECTED TO SUPPORT
AN INCREASINGLY ACTIVE PATTERN INTO NEXT WEEK.
UPPER LEVEL TROUGHING WILL CONTINUE TO STRENGTHEN OVER THE
EASTERN U.S. WITH RIDGING SHIFTING AWAY FROM THE AREA. PERSISTENT
S-SWERLY FLOW E OF THE TROUGH, POTENTIALLY WITH A SUBTROPICAL
CONNECTION, SHOULD ACT TO ENHANCE LOW-MID LEVEL MOISTURE ACROSS
THE AREA. MEANWHILE, HEATING OF A MOISTENING BOUNDARY LAYER
SHOULD LEAD TO SUFFICIENT INSTABILITY AND REDUCED INHIBITION IN
SUPPORT OF PERIODS OF CONVECTION.
LEE- SIDE TROUGHING AND, EVENTUALLY, A FRONTAL BOUNDARY THAT
WILL REACH THE FA BY MON SHOULD PROVIDE AREAS OF ENHANCED LOW-
LEVEL FORCING TODAY WITH GRADUALLY IMPROVING MID AND UPPER
LEVEL FLOW BECOMING MORE CONDUCIVE TO ORGANIZED STORM MODES AS
TROUGH ALOFT SHARPENS.
TODAY, THE SFC FRONT WILL APPROACH THE FA, THOUGH MODEL TO
MODEL TIMING DIFFERENCES STILL IN PLACE. GENERAL TREND APPEARS
TO BE A SLIGHT SLOW DOWN OF THE FRONT ENTERING THE NERN FA,
SOMETIME THIS EVENING OR THE FIRST HALF OF TONIGHT. SPC'S
OUTLOOK FOR TODAY FEATURES A SLIGHT RISK (LVL 2/5) FOR THE BULK
OF THE AREA. MOISTURE POOLING AND LOW LEVEL CONVERGENCE WILL BE
MAXIMIZED THIS AFTERNOON INTO TONIGHT AS THE COLD FRONT
APPROACHES. PWATS PEAK ON THE ORDER OF 2 AND 3/4IN IN
CONJUNCTION WITH INCREASING AFTERNOON AND EVENING INSTABILITY.
FIRST ROUND OF CONVECTION IS EXPECTED ACROSS THE INNER AND OUTER
BANKS AND INLAND WATERS, INITIATED WITH THE SEABREEZE. SBCAPES
ON THE ORDER OF 4KJ/KG ARE EXPECTED JUST AHEAD OF THE SEABREEZE
WHICH COULD LEAD TO QUICKLY DEVELOPING TSTORMS. MAIN CONCERNS
WILL BE THE POTENTIAL FOR DAMAGING WIND GUSTS, HEAVY RAIN AND
FREQ LIGHTNING LATE AFTERNOON INTO TONIGHT. WPC CONTINUES ITS
SLIGHT RISK FOR EXCESSIVE RAINFALL TODAY.
ADDITIONALLY, WHILE GUIDANCE REMAINS MIXED, THERE IS A MODEST
SIGNAL FOR LOW PRESSURE DEVELOPMENT ACROSS THE NORTHEASTERN
GULF. THE NATIONAL HURRICANE CENTER HAS INCREASED PROBABILITY
OF DEVELOPMENT A BIT TO 60/60% OVER THE NEXT 2/7 DAYS. THOUGH
NO EXPLICITLY TROPICAL IMPACTS ARE EXPECTED FROM THIS SYSTEM
LOCALLY, THIS LOW SHOULD ACT TO ENHANCE RAINFALL ALONG THE SE
COAST BY FURTHER INCREASING GULF MOISTURE TRANSPORT FROM ITS
EERN HALF THROUGH EARLY NEXT WEEK WHILE THE STALLED LINGERS
ACROSS THE REGION.
TROPICS ASIDE, DETERMINISTIC AND MACHINE LEARNING GUIDANCE
CONTINUE TO SHOW A GOOD SIGNAL FOR SOME STRONG TO MARGINALLY
SEVERE THUNDERSTORM POTENTIAL DURING THIS PERIOD OF ACTIVE
WEATHER. RIGHT NOW THE STRONGEST SIGNAL FOR SEVERE POTENTIAL
THROUGH TUE IS TODAY. GIVEN INCREASED FORCING FROM THE
APPROACHING FRONT AND THE POTENTIAL TAP OF SUBTROPICAL MOISTURE,
HEAVY RAIN AND SOME HYDRO IMPACTS MAY EVENTUALLY BE REALIZED.
MON, THE STALLED BOUNDARY LOCATED SOMEWHERE BETWEEN THE NEUSE
RIVER AND THE NC/VA BORDER, INLAND TROUGHING PERSISTING, AND
PLENTY OF MOISTURE INFLUX FROM THE S AND SW WILL KEEP CLOUDY AND
ACTIVE FORECAST IN PLACE. FORTUNATELY, THE MID AND UPPER LEVEL
TROUGH OVER NECONUS WILL BE PUSHING OFFSHORE, ENDING THE LITTLE
MID AND UPPER LEVEL DYNAMIC SUPPORT SYSTEM FOR ORGANIZED
CONVECTION. MON NIGHT, THE BOUNDARY LIFTS BACK N, "WARM-
SECTORING" THE FA ONCE AGAIN FOR TUE AND WED.
A STRONGER FRONT IS FORECAST TO APPROACH AND CROSS THE AREA WED
INTO THU, POSING THE NEXT THREAT FOR SEVERE WEATHER LATER IN THE
FORECAST PERIOD. UPPER LEVEL PATTERN FOR THIS FROPA APPEARS MORE
SUPPORTIVE OF STRONGER STORMS THAN THE SUN/MON FRONT WITH A
SHARPER TROUGH ALOFT DIGGING FURTHER S THAN THE WEEKEND TROUGH,
WITH THE BASE OF THIS TROUGH ACTUALLY CROSSING DIRECTLY
OVERHEAD.
KEY MESSAGE 3...WED/THU STRONGER FRONT IS FORECAST TO MAKE IT
THROUGH THE ENTIRETY OF THE LAND AREA OF ENC, BUT STILL STALL
OFFSHORE. THIS WILL LEAD TO MOSTLY N-NEERLY FLOW LATE WEEK INTO
THE WEEKEND, CUTTING DOWN ON THE HEAT (MID TO UPPER 80S/UPPER
60S SPLITS INTO THE WEEKEND). SEVERE THREAT APPEARS MINIMAL
BEHIND THE MIDWEEK FRONT, BUT THE MULTI DAY PERIOD OF SHOWERS IN
THE FORECAST COULD LEAD TO HYDRO ISSUES.
AVIATION /06Z SUNDAY THROUGH THURSDAY/
VFR FLIGHT CATS ARE EXPECTED FOR ALL TAF SITES THROUGH THE
OVERNIGHT WITH MVFR CLOUDS CONFINED OFFSHORE AND THE IMMEDIATE
COAST. STIFF BREEZE WILL PRECLUDE ANY FOG DEVELOPMENT.
BETTER CONVECTIVE COVERAGE EXPECTED TODAY IN TWO ROUNDS, FIRST
ALONG THE SEABREEZE THIS AFTERNOON INTO THE EVENING AND A SECOND
ROUND OF MORE ORGANIZED CONVECTION AHEAD OF AND ALONG A FRONT PUSHING
FROM N TO S LATER THIS EVENING INTO TONIGHT. BOTH ROUNDS OF
STORMS COULD LEAD TO PERIODS OF SUB- VFR. A FEW STRONGER STORMS
ARE ALSO POSSIBLE, WITH POTENTIAL FOR DAMAGING WIND GUSTS,
HEAVY RAIN, AND FREQUENT LIGHTNING.
GUIDANCE IS HINTING AT POSTFRONTAL STRATOCU AND POTENTIALLY
DENSE FOG ALONG AND IMMEDIATELY BEHIND (NORTH) OF THE FRONT.
WILL INCLUDE FEW TO SCT CLOUD GROUPS
FRONT WILL STALL TONIGHT.
OUTLOOK (MONDAY THROUGH THURSDAY): RENEWED TSRA RISK STAYS ON
THE TABLE FOR MONDAY WITH THE STALLED BOUNDARY LINGERING THROUGH
THE DAY AND LIFTING BACK NWARD MON NIGHT. ANOTHER APPROACHING
FRONT, THIS ONE LOOKING STRONGER, RENEWS SHOWER AND
THUNDERSTORM CHANCES WED INTO THU.
MARINE
LATEST SURFACE AND BUOY OBS INDICATE S-SW WINDS 10-20 KT INSIDE,
20-30KT (AND SOME HIGHER GUSTS) OVER PAMSOUND AND COASTAL
WATERS WITH SEAS 4-8FT, HIGHEST NEAR GSTREAM. SCAS CONTINUE FOR
PAMLICO SOUND AND NEARSHORE COASTAL WATERS. OVER THE OUTER
COASTAL WATERS, A FEW GALE FORCE GUSTS WILL REMAIN POSSIBLE.
DIAMOND HAS BEEN GUSTING TO THE LOW 30S FOR MOST OF THE
OVERNIGHT. MODERATE TO STRONG SW WINDS WILL CONTINUE SUNDAY,
STRONGER SOUTH OF HATTERAS WITH SEAS 3-6 FT. HAVE EXTENDED THE
EXISTING SCA FOR PAMSOUND TO ENCOMPASS THE PINCHED PRESSURE
GRADIENT DUE TO APPROACHING FRONT AND STRONGER THERMAL GRADIENT
THIS AFTERNOON AND EVENING. TWO ROUNDS OF SHOWERS AND STORMS
EXPECTED, FIRST STORMS DEVELOPING ALONG AND NEAR THE SEABREEZE
THIS AFTERNOON BEING ADVECTED OVER THE INSIDE WATERS INTO THIS
EVENING. SECOND ROUND WILL BE LATER THIS EVENING INTO TONIGHT
WHEN MORE ORGANIZED CONVECTION WORKS IN A LINE FROM N TO S
ACROSS ENC. BOTH ROUNDS HAVE POTENTIAL FOR STRONG TO SEVERE
THUNDERSTORMS THAT COULD CARRY STRONG WIND GUSTS, HEAVY
RAINFALL, AND FREQUENT LIGHTNING. THE FRONT THAT APPROACHES THE
AREA LATTER HALF OF TODAY WILL STALL AND MEANDER BETWEEN THE
NEUSE AND THE NC/VA BORDER UNTIL LIFTING BACK NWARD MON NIGHT.
OUTLOOK (MONDAY THROUGH THURSDAY):
FOR THE OUTER WATERS, ELEVATED WINDS AND SEAS MAY LAST FOR MUCH
OF THE WEEK. A STRONGER FRONT IS FORECAST TO APPROACH AND CROSS
REGIONAL WATERS MID TO LATE WEEK, BRINGING ANOTHER ROUND OF
STRENGTHENING SW WINDS AND TSTORM CHANCES, MAINLY LATER TUE AND
WED.
MHX WATCHES/WARNINGS/ADVISORIES
NC...HEAT ADVISORY FROM 11 AM THIS MORNING TO 7 PM EDT THIS EVENING
FOR NCZ044>047-079>081-090>092-094-193>196-198-199.
BEACH HAZARDS STATEMENT THROUGH THIS EVENING FOR NCZ195-196-
199-204-205.
MARINE...SMALL CRAFT ADVISORY UNTIL 2 AM EDT MONDAY FOR AMZ135.
SMALL CRAFT ADVISORY UNTIL 10 AM EDT THIS MORNING FOR AMZ150.
SMALL CRAFT ADVISORY UNTIL 6 AM EDT MONDAY FOR AMZ152-154-156-
158.
DISCUSSION...CQD/CEB
AVIATION...CEB
MARINE...CQD/CEB
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