-- Discussion containing changed information from previous version are highlighted. --
000
FXUS61 KAKQ 091756
AFDAKQ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WAKEFIELD VA
156 PM EDT SUN MAR 9 2014

.SYNOPSIS...
HIGH PRESSURE BUILDS INTO THE REGION THIS AFTERNOON THROUGH
TUESDAY. LOW PRESSURE APPROACHES FROM THE SOUTHWEST TUESDAY
NIGHT. AN ASSOCIATED WARM FRONT BECOMES LOCATED JUST NORTH OF
THE REGION EARLY WEDNESDAY WITH THE TRAILING COLD FRONT CROSSING
THE AREA WEDNESDAY AFTERNOON. HIGH PRESSURE BUILDS INTO THE AREA
WEDNESDAY NIGHT AND THURSDAY.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
DESPITE THE WANING CAA...STRONG MARCH SUN DOING ITS THING ONCE
AGAIN AS NOON TMPS ARE APPRCHG THE FCTD HIGHS FOR THE DAYS ACROSS
MOST OF THE FA. SO BUMPED UP TMPS A FEW DEGREES UNDER M SUNNY SKIES.
HIGHS L-M50S NEAR THE WATER...U50S-M60S WEST OF THE BAY.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH TUESDAY NIGHT/...
CLEAR SKIES SUNDAY NIGHT WILL ALLOW FOR DECENT RADIATIONAL COOLING
WITH LOWS IN THE 30S AREAWIDE. HIGH PRESSURE CONTINUES TO BUILD
ACROSS THE SE STATES MONDAY AND TUESDAY. MEANWHILE...A LOW PRESSURE
SYSTEM IS PROGGED TO DIVE ALONG THE NRN GREAT LAKES MONDAY AND INTO
NEW ENGLAND MONDAY NIGHT. A WEAK FRONTAL BOUNDARY ASSOCIATED WITH
THIS FEATURE IS EXPECTED TO SAG TWD THE DELMARVA DURING THIS
TIME...PRIMARILY SPREADING HIGH CLOUDS OVER THE MID ATLANTIC REGION.
MOSTLY/PARTLY SUNNY SKIES AND SW WINDS ON MONDAY WILL BRING A DRYING
AND WARMING TREND TO THE AREA WITH HIGHS IN THE UPPER 60S TO LOWER
70S (LOW-MID 60S NRN NECK AND MD/VA EASTERN SHORE). CONTINUED SW
WINDS OVERNIGHT MONDAY WILL ADVECT WARMER AIR INTO THE REGION AND
LOWS SHOULD ONLY DROP INTO THE MID 40S (UPPER 40S IMMEDIATE COAST).
HIGH PRESSURE STILL DOMINATES ON TUESDAY AS A LOW PRESSURE SYSTEM
MOVES INTO THE MID MISSISSIPPI VALLEY. A WARM FRONT IS ANTICIPATED
TO EXTEND ACROSS NRN VA DURING THIS TIME AND WILL PROMOTE ADDITIONAL
WARMING. EXPECT HIGHS IN THE LOWER 70S MOST AREAS (MID-UPPER 60S NRN
NECK AND MD/VA EASTERN SHORE). THIS LOW PRESSURE SYSTEM TRACKS
ACROSS THE TN VALLEY TUESDAY NIGHT...SPREADING LIGHT RAIN INTO THE
REGION FROM WEST TO EAST LATE TUESDAY NIGHT. WARM AIR ADVECTION AND
INCREASING CLOUD COVER OVERNIGHT SHOULD RESULT IN ABOVE NORMAL TEMPS
WITH LOWS IN THE MID-UPPER 40S...LOWER 50S NE NC/FAR SE VA.

&&

.LONG TERM /WEDNESDAY THROUGH SATURDAY/...
GFS AND ECMWF ARE COMING INTO BETTER AGREEMENT HANDLING THE
STRONG STORM SYSTEM FORECAST TO TRACK ACROSS THE MID ATLANTIC
WED. THE GFS TRACKS THE LOW ACROSS THE AREA ABOUT 6 HOURS FASTER
THAN THE ECMWF. EITHER WAY THERE WILL BE A GOOD CHANCE FOR SHOWERS
AND EVEN THE POSSIBILITY OF A FEW THUNDERSTORMS WEDNESDAY...
ESPECIALLY IN THE AFTERNOON AS THE STORM SYSTEM TRACKS ACROSS VA.
MODELS AGREE THE STORM SYSTEM WILL DEEPEN RAPIDLY WED AFTERNOON.
GOING WITH A MODEL BLEND...HAVE INCREASED POPS TO LIKELY FOR WED
WITH THE BEST CHANCE FOR SHOWERS AND STORMS IN THE AFTERNOON.
CONDITIONS WILL BECOME WINDY WITH GUSTY SOUTH TO SWLY WINDS
DEVELOPING AS THE SYSTEM DEEPENS. LOWS WED MORNING WILL BE RATHER
MILD IN THE MID TO UPPER 40S WITH HIGHS WED AFTERNOON IN THE MID
50S TO MID 60S. AFTERNOON HIGHS WED WILL DEPEND ON THE EXACT
TIMING OF THE STORM SYSTEM AND WHEN WINDS BECOME NW USHERING IN
COOLER TEMPS. THE STORM SYSTEM WILL BE RAPIDLY DEPARTING THE
DELMARVA WED EVENING/NIGHT. BEHIND THE SYSTEM STRONG NWLY WINDS
DRIVE A SURGE OF COLD AIR ACROSS THE REGION. 1000-850 MB
THICKNESSES FALL 100 METERS FROM 18Z WED TO 18Z THU. LOWS WED
NIGHT DROP BACK INTO THE LOW 30S WITH HIGHS THU STRUGGLING INTO
THE LOW TO MID 40S. COLD TEMPS EXPECTED THURSDAY NIGHT AS HIGH
PRESSURE SETTLES IN AND LOWS DROP INTO THE MID TO UPPER 20S. THIS
COLD SNAP SHOULD BE RATHER SHORT-LIVED AS TEMPERATURES SLOWLY
REBOUND FRIDAY INTO THE 50S AND EVEN 60S POSSIBLE FOR NEXT WEEKEND.

&&

.AVIATION /18Z SUNDAY THROUGH FRIDAY/...
-- Changed Discussion --
VFR CONDS SUN EXPECTED THROUGH THE 18Z TAF PERIOD. ANOTHER CDFNT
APPROACHES THE MDATLC STATES TUE NGT AS LO PRES TRACKS THROUGH THE
MS VALLEY. THE LOW MOVES QUICKLY ACROSS THE REGION WEDNESDAY AND
OFF THE COAST WEDNESDAY NIGHT. EXPECT A PERIOD OF SHOWERS WITH
AREAS OF IFR WEDNESDAY AND WEDNESDAY NIGHT. SHOWERS END BY EARLY
THURSDAY.
-- End Changed Discussion --

&&

.MARINE...
SEAS RMN SLO TO SUBSIDE OVR NC OCN WTRS...HOVERING ARND 5 FT. MAY
NEED TO EXTEND SCA THROUGH EARLY MRNG HRS. OTRW...CDFNT TO CROSS
THE WTRS BY 13Z/09. A PD OF HIGHER/GUSTY WIND SPEEDS AS DIRECTION
SHIFTS TO NNW. WILL KEEP SPEEDS BLO SCA THROUGH THE MRNG/MIDDAY
HRS BEFORE DCRSG THIS AFTN. A PD OF BENIGN WX OVR THE WTRS W/ WNDS
AOB 15 KT THIS AFTN/EVE THROUGH TUE. INCRSD SSW WNDS TUE NGT/WED
AHEAD OF LO PRES APPROACHING FM THE WSW. THAT SYS AND ITS
ASSOCIATED CDFNT REACH THE CST WED NGT...W/ A PTNTL PD OF STRNG LO
LVL CAA AND MDT/STRNG NW BY THU.

&&

.AKQ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
NC...NONE.
VA...NONE.
MARINE...NONE.

&&

$$
SYNOPSIS...MPR
NEAR TERM...
SHORT TERM...BMD
LONG TERM...JAO
AVIATION...ALB/DAP
MARINE...ALB