Area Forecast Discussion
Issued by NWS Sterling, VA

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000 FXUS61 KLWX 210751 AFDLWX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 351 AM EDT THU MAY 21 2015 .SYNOPSIS...
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LOW PRESSURE WILL PASS TO THE SOUTH TODAY AND MOVE OFF THE CAROLINAS TONIGHT. HIGH PRESSURE WILL BUILD IN FOR THE WEEKEND. A BERMUDA HIGH WILL DEVELOP AND REMAIN IN PLACE THROUGH THE MIDDLE OF NEXT WEEK.
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&& .NEAR TERM /THROUGH TONIGHT/...
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LIGHT RAIN WILL OVERSPREAD THE AREA THIS MORNING IN AN AREA OF OVERRUNNING AND ALONG AN INVERTED TROF NORTH OF THE LOW PRES CENTER. AMOUNTS WILL BE GENERALLY LESS THAN A QUARTER INCH IN MOST PLACES. RAIN WILL BEGIN TO TAPER OFF IN THE AFTERNOON BUT CLOUDY SKIES WILL LINGER THROUGH THE EVENING UNTIL WINDS TURN MORE NWRLY LATE AT NIGHT.
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&& .SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/...
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LOW PRESSURE WILL MOVE AWAY FROM THE MIDDLE ATLANTIC COAST ON FRIDAY. WEST TO NORTHWEST WINDS WILL BECOME BREEZY DURING THE DAY AS LOW PRESSURE PULLS AWAY AND HIGH PRESSURE BUILDS IN FROM THE WEST. SOME UPPER LEVEL ENERGY WILL SWING THROUGH WHICH COULD PROVIDE A FEW SHOWERS BUT CONDITIONS WILL BE MOSTLY DRY. HIGH TEMPERATURES IN THE UPPER 60S TO MIDDLE 70S CAN BE EXPECTED ON FRIDAY WITH OVERNIGHT LOWS DIPPING BACK TO THE 40S TO LOWER 50S. HIGH PRESSURE WILL DOMINATE THE PATTERN THROUGH SATURDAY WITH PLEASANT WEATHER CONDITIONS AND TEMPERATURES ONCE AGAIN IN THE UPPER 60S TO THE LOWER 70S.
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&& .LONG TERM /SUNDAY THROUGH WEDNESDAY/...
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MAIN STORY FOR THE EXTENDED WILL BE THE POTENTIAL FOR HOT TEMPERATURES NEXT WEEK. HIGH PRESSURE WILL SHIFT OFF THE MIDDLE ATLANTIC COAST ON SUNDAY WITH AN AMPLIFIED UPPER RIDGE SETTING UP OVER THE EASTERN THIRD OF THE NATION. THE RIDGE WILL BECOME VERY PRONOUNCED AND HELP BOOST TEMPERATURES WELL INTO THE 80S ON MEMORIAL DAY FOLLOWED BY 90S FOR MOST AREAS TUESDAY AND WEDNESDAY OF NEXT WEEK. A FEW MIDDLE AND UPPER 90 DEGREE READINGS MAY BE POSSIBLE ESPECIALLY IN THE METRO AREAS. ALL OF THE HEAT AND INSTABILITY WILL LEAD TO SCATTERED AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS EACH DAY.
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&& .AVIATION /12Z FRIDAY THROUGH TUESDAY/...
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MVFR CIGS EXPECTED TODAY IN LIGHT RAIN AT ALL TAF SITES. RAIN ENDS IN THE AFTERNOON BUT MVFR CIGS WILL LIKELY HOLD TIL MIDNIGHT. CLEARING EXPECTED AFTER MIDNIGHT AS DOWNSLOPE NW WINDS DEVELOP. VFR CONDITIONS LIKELY FRIDAY INTO SUNDAY. BREEZY WESTERLY WINDS EXPECTED ON FRIDAY. AFTERNOON AND EVENING SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE EACH AFTERNOON AND EVENING EARLY NEXT WEEK.
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&& .MARINE...
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SUB-SCA CONDITIONS THURSDAY WITH PSBL RAIN SHOWERS THROUGHOUT THE DAY. INCRSG NW WINDS FRI MORNING...WITH GUSTS 15-20 KTS ON THE CHESAPEAKE BAY FRI. SUB-SCA CONDITIONS FRI NIGHT. SCA CONDITIONS POSSIBLE FRIDAY INTO EARLY SATURDAY OVER MUCH OF THE WATERS. SCA CONDITIONS POSSIBLE OVER THE LOWER BAY OVER THE WEEKEND. SCATTERED AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE MEMORIAL DAY THROUGH THE EARLY PART OF NEXT WEEK.
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&& .LWX WATCHES/WARNINGS/ADVISORIES... DC...NONE. MD...NONE. VA...NONE. WV...NONE. MARINE...SMALL CRAFT ADVISORY FROM 3 AM TO 8 AM EDT FRIDAY FOR ANZ531>534-540-541-543. && $$ SYNOPSIS...LFR/KRW NEAR TERM...LFR SHORT TERM...KRW LONG TERM...KRW AVIATION...LFR/KRW MARINE...LFR/KRW

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