Area Forecast Discussion
Issued by NWS Sterling, VA

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000 FXUS61 KLWX 240020 AFDLWX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 820 PM EDT WED JUL 23 2014 .SYNOPSIS...
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A COLD FRONT IS MOVING THROUGH THE AREA. HIGH PRESSURE WILL RETURN FOR FRIDAY. THE HIGH WILL MOVE OFF THE COAST DURING THE WEEKEND. A COLD FRONT WILL PASS THROUGH THE AREA EARLY NEXT WEEK.
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&& .NEAR TERM /TONIGHT/...
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COLD FRONT PRSNTLY PUSHING THRU THE AREA. WINDS GNRLY IN THE 25-35 KT RANGE...BUT THIS HAS BEEN ENUF TO CAUSE SOME POWER OUTAGES... ESPECIALLY ALONG THE PA BORDER. TEMPS REACHED M90S AT MANY LOCALES TDA...BUT AIR MASS IS BEGINNING TO CHG IN THE POST-FRONTAL ENVIRONMENT. SHOWERS AND THUNDERSTORMS MAY PERSIST OVERNIGHT AS MOISTURE AND UPPER LEVEL FORCING LAG BEHIND THE COLD FRONT.
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&& .SHORT TERM /THURSDAY THROUGH FRIDAY/...
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SHOWERS AND ISOLATED THUNDERSTORMS WILL CONTINUE THURSDAY. IT WONT BE UNTIL THE TROUGH AXIS CROSSES THE MID ATLANTIC THURSDAY AFTERNOON WILL DRY CONDITIONS AND CLEARING MOVE INTO THE AREA FROM THE NORTH. FCST MAX TEMPS ARE AROUND 80 DEGREES THURSDAY. THE COLD FRONT WILL CONTINUE TO SAG SOUTHWARD THURSDAY NIGHT AND DRY CONDITIONS WILL PERSIST OVERNIGHT. FCST MIN TEMPS IN THE UPPER 50S WEST OF THE BLUE RIDGE TO THE LOW 60S NEAR THE I-95 CORRIDOR. HIGH PRESSURE MOVES INTO THE REGION FRIDAY RESULTING IN CALM AND MOSTLY SUNNY CONDITIONS.
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&& .LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
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HIGH PRESSURE WILL KEEP US DRY FRIDAY NIGHT...FROM THE SHENANDOAH VALLEY TO THE CHESAPEAKE BAY. UPPER ENERGY WILL MOVE EAST ACROSS OHIO AND PENNSYLVANIA SATURDAY...BRINGING A CHANCE FOR SHOWERS AND THUNDERSTORMS ACROSS THE REGION. ADDITIONAL SHOWERS OR THUNDERSTORMS MAY DEVELOP INTO SATURDAY NIGHT AS ADDITIONAL ENERGY SLIDES ACROSS THE MID ATLANTIC. THE MAIN STORM SYSTEM OVER THE GREAT LAKES WILL BEGIN TO SLIDE ACROSS THE REGION SUNDAY INTO SUNDAY NIGHT. SEVERAL WAVES OF ENERGY WILL PIVOT AROUND THE MAIN STORM...BRINGING INCREASED CHANCES OF SHOWERS AND THUNDERSTORMS. A COUPLE OF THUNDERSTORMS COULD BRING HEAVY RAIN AND GUSTY WINDS. AS THE MAIN STORM MOVES INTO SOUTHEAST CANADA MONDAY INTO MONDAY NIGHT...ITS ASSOCIATED SURFACE COLD FRONT WILL PUSH TO THE EAST COAST BY TUESDAY MORNING. AHEAD OF THE FRONT...PERHAPS ONE FINAL ROUND OF SHOWERS AND THUNDERSTORMS COULD DEVELOP IN THE REGION. TUESDAY WILL BE DRIER AND COOLER WITH HIGH PRESSURE BUILDING IN FROM THE WEST. THERE COULD BE A LINGERING SHOWER IN THE POTOMAC HIGHLANDS TUESDAY.
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&& .AVIATION /00Z THURSDAY THROUGH MONDAY/...
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VFR CONDITIONS EXPECTED OVRNGT. THE COLD FRONT WILL CROSS OVERNIGHT BUT SHRA AND VCTS ARE POSSIBLE INTO THURSDAY. VFR CONDITIONS FRIDAY NIGHT AND SATURDAY WITH LIGHT AND VARIABLE WINDS BECOMING SOUTHERLY. MVFR OR IFR CONDITIONS COULD DEVELOP WITH SHOWER AND THUNDERSTORM ACTIVITY SATURDAY NIGHT...MAINLY NEAR CHO AND MRB TERMINALS. IFR CONDITIONS MAY BE MORE LIKELY AT ANY OF THE TERMINALS SUNDAY WITH SHOWERS AND GUSTY THUNDERSTORMS.
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&& .MARINE...
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STORMS PRODUCING GUSTY WINDS. SMW WINDS HV BEEN XPCRNCD ON THE NRN BAY. A COLD FRONT CROSSING THE REGION ATTM. SHOWERS AND ISO THUNDERSTORMS WILL LINGER INTO THURSDAY. HIGH PRESSURE WILL MOVE INTO THE REGION THURSDAY NIGHT. SCA IS POSSIBLE LATE THURSDAY AND FRIDAY MORNING AS NRLY WINDS INCREASE ACROSS THE WATERS. SMALL CRAFT ADVISORIES MAY BE NEEDED SATURDAY NIGHT AND SUNDAY WITH GUSTY SOUTH TO SOUTHWEST WINDS AHEAD OF A COLD FRONT.
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&& .LWX WATCHES/WARNINGS/ADVISORIES... DC...NONE. MD...NONE. VA...NONE. WV...NONE. MARINE...NONE. && $$ UPDATE...WOODY! PRVS...HAS/KLW

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