Info PNS Public Information Statement — Mon Feb 2, 2015 3:41 PM

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