Area Forecast Discussion FXUS62 KILM [Wilmington NC] 271416 AFDILM ∨ FXUS62 KILM 271416 AFDILM [HEAD] National Weather Service Wilmington North Carolina 10:16am EDT Sat Jul 27 2024 ∨ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WILMINGTON NC 1016 AM EDT SAT JUL 27 2024 [HEAD] Synopsis. Northeast winds will usher drier air into the region through Sunday. Light winds swing around to the south late Monday bringing a gradual increase in humidity and rain chances for most of the upcoming week. ∨ .SYNOPSIS... NORTHEAST WINDS WILL USHER DRIER AIR INTO THE REGION THROUGH SUNDAY. LIGHT WINDS SWING AROUND TO THE SOUTH LATE MONDAY BRINGING A GRADUAL INCREASE IN HUMIDITY AND RAIN CHANCES FOR MOST OF THE UPCOMING WEEK. [DISC] Update. With the 10am update: decreased POPs [Probability of Precipitation] for the next several hours as most activity remains offshore or to our north. Clouds are starting to scatter out inland with a persistent cloud deck along the coast. ∨ .UPDATE... WITH THE 10AM UPDATE: DECREASED POPS FOR THE NEXT SEVERAL HOURS AS MOST ACTIVITY REMAINS OFFSHORE OR TO OUR NORTH. CLOUDS ARE STARTING TO SCATTER OUT INLAND WITH A PERSISTENT CLOUD DECK ALONG THE COAST. [DISC] Near term (through tonight)… an unusual late July cold front is expected to move south through the area later today and tonight as an upper trough moves offshore allowing surface high pressure to build from the north. Expect some showers and maybe even a few rumbles of thunder prior to the frontal passage, with the best chance of rain near the coast, especially in SC where the best moisture convergence will hang on the longest. Temps should stay below normal with highs today generally in the mid 80s and lows tonight mostly in the mid to upper 60s. ∨ .NEAR TERM /THROUGH TONIGHT/... AN UNUSUAL LATE JULY COLD FRONT IS EXPECTED TO MOVE SOUTH THROUGH THE AREA LATER TODAY AND TONIGHT AS AN UPPER TROUGH MOVES OFFSHORE ALLOWING SURFACE HIGH PRESSURE TO BUILD FROM THE NORTH. EXPECT SOME SHOWERS AND MAYBE EVEN A FEW RUMBLES OF THUNDER PRIOR TO THE FRONTAL PASSAGE, WITH THE BEST CHANCE OF RAIN NEAR THE COAST, ESPECIALLY IN SC WHERE THE BEST MOISTURE CONVERGENCE WILL HANG ON THE LONGEST. TEMPS SHOULD STAY BELOW NORMAL WITH HIGHS TODAY GENERALLY IN THE MID 80S AND LOWS TONIGHT MOSTLY IN THE MID TO UPPER 60S. [DISC] Short term (Sunday through Monday night)… some atypically low dewpoints in place on Sunday brought in on NE winds caused by both high pressure building post-frontal passage and strengthening low off midatlantic coast. Expect full sunshine and seasonable temperatures but also a cooler "feel" on account of the low dewpoints/RH [Relative Humidity] values. As winds turn more southerly on Monday the dewpoints will creep up but nowhere near the values experienced for most of July. Given the weakness of the return flow the shortwaves traversing the area Monday will be hard-pressed to generate much in the way of precipitation. ∨ .SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/... SOME ATYPICALLY LOW DEWPOINTS IN PLACE ON SUNDAY BROUGHT IN ON NE WINDS CAUSED BY BOTH HIGH PRESSURE BUILDING POST-FROPA AND STRENGTHENING LOW OFF MIDATLANTIC COAST. EXPECT FULL SUNSHINE AND SEASONABLE TEMPERATURES BUT ALSO A COOLER "FEEL" ON ACCOUNT OF THE LOW DEWPOINTS/RH VALUES. AS WINDS TURN MORE SOUTHERLY ON MONDAY THE DEWPOINTS WILL CREEP UP BUT NOWHERE NEAR THE VALUES EXPERIENCED FOR MOST OF JULY. GIVEN THE WEAKNESS OF THE RETURN FLOW THE SHORTWAVES TRAVERSING THE AREA MONDAY WILL BE HARD-PRESSED TO GENERATE MUCH IN THE WAY OF PRECIPITATION. [DISC] Long term (Tuesday through Friday)… surface and low level return flow strengthen just a bit on Tuesday while the weak mid level trough overhead becomes slightly more vort-laden in nature. There won't be any thermal advection to speak of but as dewpoints rise the humidity will increase and nighttime lows will have a higher ceiling. Shower and storm coverage will be on the rise and there will only be a minor diurnal trend as at least shallow convection should linger overnight due to continued PVA [Positive Vorticity Advection] aloft. Wednesday and Thursday will feature a large and amplifying ridge over the Western US while the eastern trough weakens. This could cause a hard-to-time reversion of convection back to a diurnal cycle as we lose most of our PVA [Positive Vorticity Advection]. Offsetting this is a continued moist advection into the southeast leading to more instability and lowered local heights. The end result will be a late period string of seasonable temperatures and a pretty normal distribution of thunderstorms that will favor the afternoon and evening hours as normal for the time of year. ∨ .LONG TERM /TUESDAY THROUGH FRIDAY/... SURFACE AND LOW LEVEL RETURN FLOW STRENGTHEN JUST A BIT ON TUESDAY WHILE THE WEAK MID LEVEL TROUGH OVERHEAD BECOMES SLIGHTLY MORE VORT- LADEN IN NATURE. THERE WON`T BE ANY THERMAL ADVECTION TO SPEAK OF BUT AS DEWPOINTS RISE THE HUMIDITY WILL INCREASE AND NIGHTTIME LOWS WILL HAVE A HIGHER CEILING. SHOWER AND STORM COVERAGE WILL BE ON THE RISE AND THERE WILL ONLY BE A MINOR DIURNAL TREND AS AT LEAST SHALLOW CONVECTION SHOULD LINGER OVERNIGHT DUE TO CONTINUED PVA ALOFT. WEDNESDAY AND THURSDAY WILL FEATURE A LARGE AND AMPLIFYING RIDGE OVER THE WESTERN U.S. WHILE THE EASTERN TROUGH WEAKENS. THIS COULD CAUSE A HARD-TO-TIME REVERSION OF CONVECTION BACK TO A DIURNAL CYCLE AS WE LOSE MOST OF OUR PVA. OFFSETTING THIS IS A CONTINUED MOIST ADVECTION INTO THE SOUTHEAST LEADING TO MORE INSTABILITY AND LOWERED LCL HEIGHTS. THE END RESULT WILL BE A LATE PERIOD STRING OF SEASONABLE TEMPERATURES AND A PRETTY NORMAL DISTRIBUTION OF THUNDERSTORMS THAT WILL FAVOR THE AFTERNOON AND EVENING HOURS AS NORMAL FOR THE TIME OF YEAR. [DISC] Aviation (14Z [10am EDT] Saturday through Wednesday)… 12Z [8am EDT] TAFs [Terminal Aerodrome Forecasts]: medium confidence through about 18Z [2pm EDT] and high confidence thereafter. A cold front remains north of the area but should make some progress southward into SE North Carolina and NE SC later today and especially tonight bringing drier air with it. Prior to the frontal passage though there will be a risk for low clouds, fog and showers early this morning. Low clouds should slowly lift and dissipate after sunrise with VFR [Visual Flight Rules] conditions likely by early afternoon. Mainly IFR [Instrument Flight Rules] ceilings will improve to MVFR [Marginal Visual Flight Rules] after daybreak from north to south. Decent radiational cooling conditions and the wet ground from recent rainfall could lead to some fog inland late tonight. ∨ .AVIATION /14Z SATURDAY THROUGH WEDNESDAY/... 12Z TAFS: MEDIUM CONFIDENCE THROUGH ABOUT 18Z AND HIGH CONFIDENCE THEREAFTER. A COLD FRONT REMAINS NORTH OF THE AREA BUT SHOULD MAKE SOME PROGRESS SOUTHWARD INTO SE NC AND NE SC LATER TODAY AND ESPECIALLY TONIGHT BRINGING DRIER AIR WITH IT. PRIOR TO THE FRONTAL PASSAGE THOUGH THERE WILL BE A RISK FOR LOW CLOUDS, FOG AND SHOWERS EARLY THIS MORNING. LOW CLOUDS SHOULD SLOWLY LIFT AND DISSIPATE AFTER SUNRISE WITH VFR CONDITIONS LIKELY BY EARLY AFTERNOON. MAINLY IFR CEILINGS WILL IMPROVE TO MVFR AFTER DAYBREAK FROM NORTH TO SOUTH. DECENT RADIATIONAL COOLING CONDITIONS AND THE WET GROUND FROM RECENT RAINFALL COULD LEAD TO SOME FOG INLAND LATE TONIGHT. [AVIA] Extended outlook. VFR [Visual Flight Rules] likely Sunday into Monday with a chance for restrictions starting inland Monday afternoon due to showers and possible storms. Better chance for restrictions from showers/storms/low clouds starting Tuesday. ∨ EXTENDED OUTLOOK...VFR LIKELY SUNDAY INTO MONDAY WITH A CHANCE FOR RESTRICTIONS STARTING INLAND MONDAY AFTERNOON DUE TO SHOWERS AND POSSIBLE STORMS. BETTER CHANCE FOR RESTRICTIONS FROM SHOWERS/STORMS/LOW CLOUDS STARTING TUESDAY. [DISC] Marine. Through tonight… a rather unusual late July cold frontal passage is expected later today and tonight. This will bring shifting winds to the north which will increase into the afternoon, although likely staying below Small Craft Advisory levels (25 kt [29 mph]). Significant wave heights should stay at or below 4 ft, a mix of northeasterly wind waves and southeasterly swells which will make it a bit rough. ∨ .MARINE... THROUGH TONIGHT...A RATHER UNUSUAL LATE JULY COLD FRONTAL PASSAGE IS EXPECTED LATER TODAY AND TONIGHT. THIS WILL BRING SHIFTING WINDS TO THE NORTH WHICH WILL INCREASE INTO THE AFTERNOON, ALTHOUGH LIKELY STAYING BELOW SMALL CRAFT ADVISORY LEVELS (25 KT). SIGNIFICANT WAVE HEIGHTS SHOULD STAY AT OR BELOW 4 FT, A MIX OF NORTHEASTERLY WIND WAVES AND SOUTHEASTERLY SWELLS WHICH WILL MAKE IT A BIT ROUGH. [AVIA] Sunday through Wednesday night… Sunday brings NE winds behind cold frontal passage but veering may start as soon as Sunday night as the post-frontal high weakens. The NE wind waves though small will still be clashing a bit with SE swell for the occasional steep wave face. A return of more typical southerly winds is slated for Monday though just barely as speeds should be capped at 10 knots [12 mph] by such a weak gradient as the west Atlantic high doesn't seem to want to push into the area much. This may hold true for the entire period bringing quiet midweek marine conditions. ∨ SUNDAY THROUGH WEDNESDAY NIGHT... SUNDAY BRINGS NE WINDS BEHIND COLD FRONTAL PASSAGE BUT VEERING MAY START AS SOON AS SUNDAY NIGHT AS THE POST-FRONTAL HIGH WEAKENS. THE NE WIND WAVES THOUGH SMALL WILL STILL BE CLASHING A BIT WITH SE SWELL FOR THE OCCASIONAL STEEP WAVE FACE. A RETURN OF MORE TYPICAL SOUTHERLY WINDS IS SLATED FOR MONDAY THOUGH JUST BARELY AS SPEEDS SHOULD BE CAPPED AT 10 KNOTS BY SUCH A WEAK GRADIENT AS THE WEST ATLANTIC HIGH DOESN`T SEEM TO WANT TO PUSH INTO THE AREA MUCH. THIS MAY HOLD TRUE FOR THE ENTIRE PERIOD BRINGING QUIET MIDWEEK MARINE CONDITIONS. [AVI2] ILM [Wilmington NC] Watches/Warnings/Advisories
.ILM WATCHES/WARNINGS/ADVISORIES... NC...BEACH HAZARDS STATEMENT UNTIL 8 PM EDT THIS EVENING FOR NCZ108. SC...NONE. MARINE...NONE. [WARN] Synopsis: ILM; Update: LEW; Near Term: RJB; Short Term: MBB; Long Term: MBB; Aviation: RJB; Marine: ILM ∨ SYNOPSIS...ILM UPDATE...LEW NEAR TERM...RJB SHORT TERM...MBB LONG TERM...MBB AVIATION...RJB MARINE...ILM [CRED] |
Point Forecast Wilmington NC 27 Jul 9:53am EDT Today A slight chance of showers before 2pm. Partly sunny, with a high near 86°. NE wind around 11 mph, with gusts as high as 18 mph. Chance of precipitation is 20%. Tonight Mostly clear, with a low around 67°. North wind 5 to 7 mph. Sunday Sunny, with a high near 87°. North wind 6 to 8 mph becoming east in the afternoon. Sunday Night Mostly clear, with a low around 68°. Light and variable wind. Monday Mostly sunny, with a high near 88°. Calm wind becoming south 5 to 7 mph in the afternoon. Monday Night A slight chance of showers after 2am. Mostly cloudy, with a low around 72°. Chance of precipitation is 20%. Tuesday A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88°. Chance of precipitation is 30%. Tuesday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 74°. Chance of precipitation is 30%. Wednesday A chance of showers and thunderstorms. Partly sunny, with a high near 89°. Chance of precipitation is 50%. Wednesday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 74°. Chance of precipitation is 40%. Thursday A chance of showers. Mostly sunny, with a high near 91°. Chance of precipitation is 50%. Thursday Night A chance of showers. Partly cloudy, with a low around 76°. Chance of precipitation is 30%. Friday A chance of showers. Mostly sunny, with a high near 91°. Chance of precipitation is 40%. Today A slight chance of showers before 2pm. Partly sunny, with a high near 86. Northeast wind around 11 mph, with gusts as high as 18 mph. Chance of precipitation is 20%. Tonight Mostly clear, with a low around 67. North wind 5 to 7 mph. Sunday Sunny, with a high near 87. North wind 6 to 8 mph becoming east in the afternoon. Sunday Night Mostly clear, with a low around 68. Light and variable wind. Monday Mostly sunny, with a high near 88. Calm wind becoming south 5 to 7 mph in the afternoon. Monday Night A slight chance of showers after 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 20%. Tuesday A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 30%. Tuesday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 30%. Wednesday A chance of showers and thunderstorms. Partly sunny, with a high near 89. Chance of precipitation is 50%. Wednesday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 40%. Thursday A chance of showers. Mostly sunny, with a high near 91. Chance of precipitation is 50%. Thursday Night A chance of showers. Partly cloudy, with a low around 76. Chance of precipitation is 30%. Friday A chance of showers. Mostly sunny, with a high near 91. Chance of precipitation is 40%. |
|
This page is generated dynamically from the National Weather Service's NWS point forecast and Area Forecast Discussion, reformatted for readability. NWS glossary; about point forecasts. For more information, visit the Lobitos Weather Project home page. Comments and corrections are welcome: |