Area Forecast Discussion
Issued by NWS Sterling, VA

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000 FXUS61 KLWX 250744 AFDLWX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 344 AM EDT TUE AUG 25 2015 .SYNOPSIS...
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A COLD FRONT WILL STALL OUT OVER SOUTHERN VIRGINIA TODAY WHILE HIGH PRESSURE APPROACHES FROM THE NORTH AND WEST. HIGH PRESSURE WILL BUILD OVER THE REGION FOR WEDNESDAY AND THURSDAY. THE BOUNDARY WILL RETURN NORTH AS A WARM FRONT...PASSING THROUGH OUR AREA FRIDAY INTO THE WEEKEND.
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&& .NEAR TERM /THROUGH TONIGHT/...
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WEAK COLD FRONT WILL EXIT THE REGION THIS MORNING. ANY LIGHT SHOWER ACTIVITY ALONG AND EAST OF I- 95 WILL COME TO AN END AS LOW LEVEL FLOW TURNS TO THE W-NW AND DRIER AIR ADVECTS IN FROM THE WEST. TEMPERATURES WILL BE COOLER AND THE AIRMASS WILL BE NOTICEABLY DRIER THAN YESTERDAY. AFTERNOON HIGH TEMPERATURES WILL LIKELY REACH THE UPPER 70S WEST OF THE BLUE RIDGE...LOW TO MID 80S EAST OF THE BLUE RIDE AND ACROSS THE BALTIMORE AND WASHINGTON DC METRO AREAS. DEWPOINTS IN THE 50S WILL MAKE FOR PLEASANT CONDITIONS. MOSTLY CLEAR SKIES WILL FOLLOW FOR TONIGHT. OVERNIGHT LOWS WILL DIP BACK INTO THE 50S WEST TO LOW TO MID 60S EAST.
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&& .SHORT TERM /WEDNESDAY THROUGH WEDNESDAY NIGHT/...
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HIGH PRESSURE WILL REMAIN IN CONTROL ON WEDNESDAY. HIGH TEMPERATURES WILL ONCE AGAIN REACH THE 70S WEST TO THE LOW 80S EAST OF THE BLUE RIDGE. HIGH PRESSURE WILL CONTINUE TO INFLUENCE OUT WEATHER FOR WEDNESDAY NIGHT WITH DRY AND COOL CONDITIONS. MIN TEMPS WILL RANGE FROM THE 40S AND 50S IN THE POTOMAC HIGHLANDS TO THE MID 60S IN DOWNTOWN WASHINGTON AND BALTIMORE.
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&& .LONG TERM /THURSDAY THROUGH MONDAY/...
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HIGH PRESSURE WILL CONTINUE TO BRING DRY CONDITIONS ALONG WITH LOW HUMIDITY FOR THURSDAY. A BOUNDARY TO OUR SOUTH WILL RETURN AS A WARM FRONT...SLOWLY PASSING THROUGH OUR AREA FRIDAY AND SATURDAY. THE BOUNDARY WILL BE WEAK...SO THE FORECAST REMAINS DRY. HOWEVER...HUMIDITY WILL SLOWLY RETURN DURING THIS PERIOD. SOUTHERLY FLOW WILL TAKE OVER FOR SUNDAY AND MONDAY BEHIND THE WARM FRONT AND AROUND HIGH PRESSURE OVER THE ATLANTIC. WARM AND HUMID CONDITIONS ARE EXPECTED. A POPUP SHOWER OR THUNDERSTORM CANNOT BE RULED OUT IN THE AFTERNOON AND EVENING HOURS...BUT MUCH OF THE TIME SHOULD TURN OUT DRY.
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&& .AVIATION /08Z TUESDAY THROUGH SATURDAY/...
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VFR CONDITIONS EXPECTED THROUGH WEDNESDAY WITH WEST TO NORTHWEST FLOW. VFR CONDITIONS ARE EXPECTED WEDNESDAY NIGHT THROUGH SATURDAY.
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&& .MARINE...
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OCCASIONAL SCA CONDITIONS ON THE LOWER BAY AND TIDAL POTOMAC THIS MORNING. HIGH PRESSURE WILL NOSE IN AND WINDS WILL FALL BELOW SCA BY SUNRISE. HIGH PRESSURE WILL REMAIN OVER THE WATERS ON WEDNESDAY. A NORTH TO NORTHWEST FLOW IS EXPECTED OVERNIGHT WEDNESDAY INTO THURSDAY. A SMALL CRAFT ADVISORY MAY BE NEEDED FOR PORTIONS OF THE WATERS DURING THIS TIME. OTHERWISE...NO MARINE HEADLINES ARE EXPECTED FOR THE REST OF THURSDAY THROUGH SATURDAY. A POPUP SHOWER OR THUNDERSTORM IS POSSIBLE EARLY NEXT WEEK...BUT MUCH OF THE TIME SHOULD BE DRY.
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&& .TIDES/COASTAL FLOODING...
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TIDAL ANOMALIES REMAIN AROUND ONE FOOT EARLY THIS MORNING. ANOMALIES WILL DECREASE TODAY DUE TO A NORTHWEST FLOW.
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&& .LWX WATCHES/WARNINGS/ADVISORIES...
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DC...NONE. MD...COASTAL FLOOD ADVISORY UNTIL 5 AM EDT EARLY THIS MORNING FOR MDZ014. VA...NONE. WV...NONE. MARINE...SMALL CRAFT ADVISORY UNTIL 6 AM EDT EARLY THIS MORNING FOR ANZ533-534-537-541>543.
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&& $$ SYNOPSIS...BJL NEAR TERM...KRW SHORT TERM...BJL/KRW LONG TERM...BJL AVIATION...BJL/KRW MARINE...BJL/KRW TIDES/COASTAL FLOODING...BJL

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