Area Forecast Discussion
Issued by NWS Sterling, VA

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000 FXUS61 KLWX 190727 CCA AFDLWX AREA FORECAST DISCUSSION...CORRECTED NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 324 AM EDT WED JUN 19 2013 .SYNOPSIS... HIGH PRESSURE OVER LAKE HURON WILL BUILD INTO THE NORTHEASTERN U.S. THROUGH FRIDAY. THE HIGH WILL MOVE OFFSHORE THIS WEEKEND INTO EARLY NEXT WEEK...BRINGING A RETURN OF WARM AND HUMID CONDITIONS. && .NEAR TERM /TODAY/... SFC ANLYS SHOWS CD FNT HAS MOVED WELL S INTO N CAROLINA. HIGH PRES OVR LAKE HURON. LAST VESTIGES OF PCPN IN CENTRAL MD/NRN VA/ERN WV BUT WEAKENING WHILE TRACKING SE. THE CLD CVR IN ASSO W/ THESE IS KEEPING OVRNGT FOG AT BAY. AS DRIER AIR MOVES INTO THE RGN SOME VERY PLSNT WX IS ON TAP AS SPRING COMES WINDS DOWN. CLRG SKIES...DWPTS IN THE 50S...HIGH TEMPS IN THE U70S/80S. && .SHORT TERM /TONIGHT THROUGH THURSDAY NIGHT/... ...AND THE FINAL MOMENTS OF SPRING LOOK TO END ON A FINE NOTE IN THE MID ATLC AS WELL... HIGH PRES OVR THE NERN U.S. TNGT THRU THU NGT. DWPTS CONT ON THE DRY SIDE. LOWS IN THE 50S BOTH NGTS W OF I-95...60S IN THE CITIES AND ALONG THE BAY. HIGH TEMPS THU IN THE L80S. && .LONG TERM /FRIDAY THROUGH TUESDAY/...
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BROAD UPPER RIDGE OVER THE CENTRAL CONUS BUILDS EWD INTO THE MID-ATLANTIC STATES ON FRI AND REMAINS OVERHEAD THIS WEEKEND INTO ERY NEXT WEEK. AT THE SFC...REGION WILL BE SITUATED ON WRN PERIPHERY OF AN ATLANTIC HIGH. TEMPS WILL TREND SLIGHTLY WARMER EACH DAY UNDER THE INFLUENCE OF WEAK RETURN FLOW BUT OPPRESSIVE HEAT NOT EXPECTED TO DEVELOP WITH THIS PATTERN. MOST OF THE AREA WILL BE RAIN FREE THRU THE WEEKEND WITH SUBSIDENCE INVERSION CAPPING CONVECTION. HOWEVER...ISO POP UP SHOWERS AND STORMS ARE POSSIBLE OVER THE MTS DURING THE PEAK HEATING HRS EACH DAY. SLIGHTLY HIGHER CHANCES FOR AFTN SHOWERS AND STORMS ERY NEXT WEEK AS SUBSIDENCE INVERSION WEAKENS AND BOUNDARY-LAYER MOISTURE INCREASES. FOR RIGHT NOW...HAVE CONFINED CHANCE POPS TO THE HIGHER TERRAIN WITHOUT ORGANIZED FORCING TO MAINTAIN CONVECTION TOO FAR EAST OF THE MTS.
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&& .AVIATION /07Z WEDNESDAY THROUGH SUNDAY/... SCT SHRA OVR CENTRAL MD/NRN VA ARE ON THE WANE. ALTHO THERE WAS QUITE A BIT OF RA YDA IT SEEMS THAT THE OVRNGT CLD CVR IS KEEPING THE PSBLTY OF FOG AT BAY. TDA VFR CONDS WL BE SEEN AT ALL AIRPORTS. FOG WL BE PSBL TNGT...THEN VFR AGN THU. MAINLY VFR THRU ERY NEXT WEEK. PATCHY RADIATIONAL FOG MAY REDUCE VSBYS DURING THE ERY MRNG...ESPECIALLY DURING THE FOG PRONE TERMINALS SUCH AS MRB/CHO. && .MARINE...
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HIGH PRES OVR THE GRT LKS WL TRACK E TOWARDS NEW ENGLAND TDA/TNGT. ALTHO THE PRES GRAD IS NOT GRT...SUSPECT THAT THE WARM/CHANNELING DOWN THE CHES BAY COULD BRING GUSTS TO SCA LVLS...WITH THE WATERS S OF DRUM PT BEING THE MOST LKLY LOCATION. AN SCA HAS BEEN ISSUED THERE FOR THE AFTN HRS. NO PROBS XPCTD ON THE WATERS TNGT THRU THU NGT. LGT SLY WINDS THRU THE WEEKEND WITH HIPRES IN CONTROL.
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&& .LWX WATCHES/WARNINGS/ADVISORIES... DC...NONE. MD...NONE. VA...NONE. WV...NONE. MARINE...SMALL CRAFT ADVISORY FROM 11 AM THIS MORNING TO 6 PM EDT THIS EVENING FOR ANZ534. && $$ PRODUCTS...WOODY!/JRK

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