PNSLWX)...AND THESE WILL REMAIN POSSIBLE AS OUTLINED IN THE WIND ADVISORY. PRESSURE GRADIENT REMAINS QUITE STRONG THROUGH MOST OF THE NIGHT KEEPING MIXING IN PLACE...SO DOWNTURN IN WINDS WILL BE RELATED TO LESSENING WINDS ALOFT. HOWEVER HIGH PRESSURE WILL BE QUICKLY MOVING IN FROM THE WEST...AND WINDS SHOULD BE MUCH LESS NOTICEABLE BY DAYBREAK. WE HAVE NOT RECEIVED ANY MOUNTAIN SNOW REPORTS AS OF THIS WRITING IN THE WINTER WX ADVISORY...BUT SNOW IS BEING REPORTED UPSTREAM AND THERE WILL BE SEVERAL HOURS THIS AFTERNOON WITH FAVORABLE MOISTURE AND LIFT IN THE DGZ...SO A FEW INCHES OF ACCUMULATION REMAINS PLAUSIBLE. THESE UPSLOPE SNOW SHOWERS WILL DECREASE QUICKLY THIS EVENING. && .SHORT TERM /6 AM TUESDAY MORNING THROUGH TUESDAY NIGHT/... HIGH PRESSURE WILL BRING DRY AND COLD CONDITIONS TUESDAY...DESPITE SUNSHINE. MAX TEMPS WILL RANGE FROM THE 20S IN THE MOUNTAINS TO NEAR 40 IN CENTRAL VIRGINIA. WITH HIGH PRESSURE OVERHEAD...IT WILL NOT BE NEARLY AS WINDY AS MONDAY. THE HIGH WILL MOVE OFF THE COAST TUESDAY NIGHT WHILE AN UPPER-LEVEL DISTURBANCE PASSES BY TO OUR NORTH. A FEW HIGH AND MID-LEVEL CLOUDS ARE EXPECTED DURING THIS TIME...BUT THE CLOUD DECK SHOULD BE THIN ENOUGH TO ALLOW FOR RADIATIONAL COOLING. LEANED TOWARD THE COLDER GUIDANCE FOR THE VALLEYS AND RURAL AREAS. MIN TEMPS ARE FORECAST TO RANGE FROM NEAR 20 IN THE VALLEYS AND RURAL AREAS TO THE UPPER 20S IN WASHINGTON AND BALTIMORE. && .LONG TERM /WEDNESDAY THROUGH SUNDAY/... HIGH PRESSURE WILL REMAIN OVER THE ATLANTIC WEDNESDAY WHILE A COLD FRONT APPROACHES FROM THE WEST. A SOUTHERLY FLOW BETWEEN THESE SYSTEMS WILL ALLOW FOR MILDER CONDITIONS DURING THE AFTERNOON. MAX TEMPS WILL RANGE FROM THE LOWER 40S ALONG THE MASON-DIXON LINE TO THE LOWER 50S IN CENTRAL VIRGINIA. THE COLD FRONT WILL PASS THROUGH THE AREA WEDNESDAY NIGHT INTO THURSDAY. SOUTHERN BRANCH ENERGY FROM THE JET MAY PHASE WITH THE NORTHERN BRANCH ENERGY ASSOCIATED WITH THE COLD FRONT. HOWEVER...EVEN IF THIS DOES OCCUR IT LOOKS LIKE IT WOULD BE TOO LATE TO HAVE A SIGNIFICANT IMPACT ON OUR AREA. THEREFORE...ANY PRECIPITATION WILL BE LIGHT. HOWEVER...SOME OF THAT PRECIPITATION MAY FALL IN THE FORM OF SNOW AND THIS COULD IMPACT THE MORNING OR EVENING RUSH HOUR COMMUTE FOR THURSDAY. NOTICEABLY COLDER CONDITIONS GUSTY NORTHWEST WINDS ARE EXPECTED BEHIND THE FRONT LATER THURSDAY AND THURSDAY NIGHT BEFORE HIGH PRESSURE BUILDS OVERHEAD FRIDAY. HIGH PRESSURE WILL MOVE OFF THE COAST SATURDAY AND LOW PRESSURE MAY IMPACT THE AREA SUNDAY INTO MONDAY...BRINGING THE NEXT SIGNIFICANT CHANCE FOR PRECIPITATION. THERE MAY BE ENOUGH COLD AIR FOR WINTRY PRECIPITATION DURING THIS TIME. && .AVIATION /20Z MONDAY THROUGH SATURDAY/... ANY REMAINING VFR CIGS WILL SCATTER OUT BY THIS EVENING. NW WINDS WILL BE STRONGEST THIS AFTERNOON...WITH OCCASIONAL GUSTS ABOVE 40 KT POSSIBLE. TRIED TO SHOW DECREASING TREND THIS EVENING...BUT LOW CONFIDENCE OF EXACT HOUR WHEN PROBABILITY OF 40 KT GUSTS WILL END. GUSTS WILL DIMINISH ENTIRELY LATE TONIGHT. LIGHTER WINDS BACK TO SOUTHERLY BY LATE TUESDAY AFTERNOON WITH VFR CONDITIONS. VFR CONDITIONS ARE EXPECTED TUESDAY THROUGH WEDNESDAY. A COLD FRONT MAY BRING A PERIOD OF RAIN OR SNOW LATE WEDNESDAY NIGHT INTO THURSDAY. VFR CONDITIONS ARE EXPECTED THURSDAY NIGHT THROUGH FRIDAY. GUSTY NORTHWEST WINDS WILL IMPACT THE TERMINALS LATER THURSDAY THROUGH THURSDAY NIGHT AND POSSIBLY INTO FRIDAY. && .MARINE... PRESSURE SURGE HAS NOT REACHED THE WATERS QUITE YET BUT WILL BY LATE AFTERNOON. THIS WILL MARK WHEN NW GALES WILL BECOME MORE WIDESPREAD...AND SOME GUSTS ABOVE 40 KT WILL BE POSSIBLE. WINDS WILL ONLY SLOWLY DIMINISH OVERNIGHT...ALTHOUGH ANY GALE STRENGTH GUSTS SHOULD END BY DAYBREAK AS HIGH PRESSURE EVENTUALLY BUILDS OVERHEAD. HIGH PRESSURE WILL BUILD OVER THE WATERS TUESDAY. A SMALL CRAFT ADVISORY IS IN EFFECT FOR THE WATERS TUESDAY MORNING. THE HIGH WILL MOVE OFF THE COAST TUESDAY NIGHT INTO WEDNESDAY AND A SMALL CRAFT ADVISORY MAY BE NEEDED FOR PORTIONS OF THE WATERS FOR SOUTHERLY WINDS WEDNESDAY. A COLD FRONT WILL PASS THROUGH THE WATERS THURSDAY AND GUSTY NORTHWEST WINDS ARE EXPECTED BEHIND THE FRONT LATER THURSDAY THROUGH THURSDAY NIGHT. A GALE WARNING MAY BE NEEDED FOR PORTIONS OF THE WATERS DURING THIS TIME. HIGH PRESSURE WILL BUILD OVERHEAD FRIDAY ALLOWING FOR WINDS TO DIMINISH. && .TIDES/COASTAL FLOODING... STRONG NORTHWEST WINDS WILL CAUSE WATER LEVELS TO RAPIDLY DROP ALONG THE TIDAL POTOMAC RIVER AND MARYLAND PORTION OF THE CHESAPEAKE BAY. WATER LEVELS AROUND 2 FEET BELOW NORMAL ARE EXPECTED TONIGHT INTO TUESDAY MORNING. A MARINE WEATHER STATEMENT HAS BEEN ISSUED TO ALERT FOR THE LOW WATER LEVELS. && .LWX WATCHES/WARNINGS/ADVISORIES... DC...WIND ADVISORY UNTIL MIDNIGHT EST TONIGHT FOR DCZ001. MD...WINTER WEATHER ADVISORY UNTIL 7 PM EST THIS EVENING FOR MDZ501. WIND ADVISORY UNTIL MIDNIGHT EST TONIGHT FOR MDZ003>006-011- 013-014-016>018-501>508. VA...WINTER WEATHER ADVISORY UNTIL 7 PM EST THIS EVENING FOR VAZ503. WIND ADVISORY UNTIL MIDNIGHT EST TONIGHT FOR VAZ025>031- 036>040-050>057-501>508. WV...WINTER WEATHER ADVISORY UNTIL 7 PM EST THIS EVENING FOR WVZ501- 503-505. WIND ADVISORY UNTIL MIDNIGHT EST TONIGHT FOR WVZ050>053-055- 501>506. MARINE...SMALL CRAFT ADVISORY FROM 6 AM TO 10 AM EST TUESDAY FOR ANZ530>543. GALE WARNING UNTIL 6 AM EST TUESDAY FOR ANZ530>543. && $$ SYNOPSIS...BJL