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[Printable]
663
FXUS61 KAKQ 201410
AFDAKQ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WAKEFIELD VA
1010 AM EDT SUN APR 20 2014

.SYNOPSIS...
LOW PRESSURE OFF THE SOUTHEAST COAST...WILL TRACK SLOWLY NORTHEAST
INTO THE ATLANTIC THROUGH MONDAY...AS HIGH PRESSURE BUILDS EASTWARD
ACROSS NEW ENGLAND AND OFF THE COAST. A COLD FRONT WILL CROSS THE
AREA TUESDAY AFTERNOON INTO TUESDAY NIGHT. HIGH PRESSURE RETURNS
FOR WEDNESDAY AND THURSDAY.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
LO PRES RMNS OFF THE SE CONUS CST LATE THIS MRNG...WHILE SFC HI
PRES HAS SETTLED OVR ERN NEW ENG. COMBINATION OF THAT LO AND SFC
HI PRES TO THE NNE WILL RESULT IN CONTINUED LO LVL FLO FM THE NE
THIS AFTN. WORST OF THE WX WILL BE CONFINED TO CSTL NE NC...WHERE
CLDS...GUSTY NE WNDS (TO 30-35 KT) AND SPOTTY LGT RAIN WILL CONT.
KEEPING BKN CLDS ACRS EXTREME SE VA/INTERIOR NE NC THROUGH THE
AFTN...W/ POPS 20-40%. ELSW...P/MSNY...BREEZY INLAND/WINDY AT THE
CST. MADE MINOR ADJUSTMENTS TO TEMPS FOR REST OF THE DAY. HI TEMPS
RANGING FM THE M/U50S AT THE NR THE BAY/CST IN LWR MD/ERN VA...AND
ACRS MUCH OF EXTREME SE VA/CSTL NE NC...TO M/U60S INLAND.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH TUESDAY/...
UPR LVL RDG BLDS OVR THE REGION LATER TNGT THRU MON WITH LO PRES
CONTINUING TO MOVE OUT TO SEA. IMPROVING CONDS EXPECTED OVR CSTL
NE NC (ALBEIT SLOLY)...WITH CLEAR TO PRTLY CLOUDY WX ELSEWHERE.
COLD FRONT TRACKING INTO THE OH VLY MON EVENG...WILL PUSH E AND
OVR THE MTNS TUE MORNG. THAT FRONT WILL BRING INCREASING CLOUDINESS
FM W-E TUE...ALONG WITH THE NEXT CHC FOR RAIN. MOST OF IF NOT ALL
PCPN MAY HOLD OFF UNTIL AFTN W...AND EVENG E ON TUE. WILL MAINTAIN
A SLGT CHC OF A TSTM...THOUGH DYNAMICS WEAKENING WITH TIME...AS
THE FRONT ENTERS THE REGION. LO TEMPS TNGT RANGING FM THE UPR 30S
TO LWR 50S. HIGHS ON MON RANGING THRU THE 60S TO NEAR 70. LOWS MON
NGT RANGING FM THE MID 40S TO ARND 50. HI TEMPS ON TUE RANGING FM
THE MID TO UPR 70S INLAND...TO THE UPR 60S TO LWR 70S AT THE CST.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
NEAR SEASONABLE NORMAL TEMPS AND DRY CONDITIONS WILL HIGHLIGHT
THE EXTENDED PERIOD FORECAST. A COLD FRONT WILL APPROACH THE
REGION LATE IN THE EXTENDED PERIOD.

TROUGH AXIS WILL ALIGN ALONG THE MID-ATLANTIC COAST TUES NIGHT-
WED MORNING. ADDITIONAL ENERGY WILL DIVE DOWN THE BACKSIDE OF THE
UPPER TROUGH (AIDED BY 110+ KT JET STREAK) WEDS AFTERNOON...LIKELY
ONLY RESULTING IN MID-LEVEL CLOUDINESS. SPRINKLES MAY BE POSSIBLE
OVER THE ERN SHORE. TROUGH WILL EXIT THE COAST WEDS AFTERNOON AS
DIFFLUENCE ALOFT USHERS IN SFC HIGH PRESSURE. FLOW WILL AMPLIFY AS
A WRN CONUS TROUGH PROGRESSES EWD INTO THE PLAINS THURS. AN
ASSOCIATED COLD FRONT WILL REACH THE OH VALLEY THURS NIGHT-FRI
MORNING. HIGH PRESSURE WILL SLIDE OVER THE REGION THURS...LOCATING
OFF THE SE COAST THURS NIGHT-FRIDAY. A WARM FRONT WILL LIFT OVER
THE REGION THURS NIGHT INTO FRI...AS THE COLD FRONT REACHES THE
LOCAL AREA LATE FRI INTO FRI NIGHT. SPATIAL AND TIMING DIFFERENCES
EXIST WRT FRONTAL TIMING...AS WELL AS THE EVOLUTION OF THE UPPER
FLOW...SO CONFIDENCE IS NOT HIGH ATTM. AS A
RESULT...PREDICTABILITY IS RATHER LOW SO HAVE ONLY INCLUDED
SLIGHT CHANCE POPS FRIDAY NIGHT.

NEAR SEASONABLE DAYTIME TEMPS WEDS AND THURS BEHIND THE FRONT IN
PART TO NWLY FLOW. HIGHS GENERALLY IN THE UPPER 60S TO NEAR 70.
WARMER FRI AND SAT WITH SW-W FLOW...HIGHS IN THE MID-UPPER 70S.

&&

.AVIATION /14Z SUNDAY THROUGH THURSDAY/...
STRENGTHENING LOW PRESSURE OFF THE FL COAST WILL CONTINUE TO TRACK
ENE OFF THE SOUTHEAST COAST THROUGH THE TAF PERIOD, THEREBY
TIGHTENING THE PRESSURE GRADIENT OVER THE LOCAL AREA. MEANWHILE,
UPPER LEVEL CLOUDS WILL PERSIST OVER THE FA THROUGH THE AFTN. DRYING
HIGH PRESSURE CONTINUES TO BUILD IN FROM THE NW...HELPING TO KEEP
PRECIP TO THE SOUTH OF KECG. HELD ON TO A VCSH GROUP AT ECG WITH
SHRAS IN THE AREA...BUT EXPECT PREDOMINATE CONDITIONS TO BE MAINLY
DRY. BIGGEST ISSUE TODAY WL BE W/STRONG NE FLOW )(ESPECIALLY SE
COASTAL TERMINALS). WINDS WL GUST TO 25-30KT LATER THIS MORNING
THROUGH THIS EVENING AT PHF-ORF-ECG (AND ~20KT AT RIC/SBY).

OUTLOOK: GUSTY WINDS DIMINISH TONIGHT...AND WHILE VSBYS REMAIN
VFR, EXPECT LOW CLOUDS WL PERSIST ACROSS COASTAL TERMINALS. AFTER
A BRIEF PERIOD OF IFR POSSIBLE ACROSS THE COASTAL PLAIN (ECG/ORF)
LATE TONIGHT, EXPECT PREDOMINATE VFR FOR MONDAY. NEXT WXMAKER
ARRIVES TUESDAY AS A COLD FRONT PUSHES ACROSS THE REGION
TUESDAY/TUESDAY NIGHT. VFR CONDS RETURN WED AS HIGH PRESSURE
BUILDS INTO THE REGION.

&&

.MARINE...
EARLY MORNING WX ANALYSIS FEATURES SFC HIGH PRESSURE IN PLACE OVER
NORTHERN MAINE/SOUTHEAST QUEBEC...RIDGING SWD INTO THE MID-ATLANTIC.
TO THE SOUTH, SFC LOW PRESSURE REMAINS NEARLY STATIONARY OFF THE
GA/FL COAST COAST, WITH AN ELONGATED COASTAL TROUGH EXTENDING ALONG
THE CAROLINA COAST THIS MORNING. THE RESULT IS CONTINUED NE FLOW
OVER THE WATERS THIS MORNING. SCA FLAGS IN PLACE ALL WATERS. THE SFC
LOW PUSHES NE ALONG THE COASTAL TROUGH THROUGH THIS EVENING, W/THE
TIGHTENING PRESSURE GRADIENT OVER THE WATERS TO BRING AN INCREASE IN
NE WINDS OVER THE WATERS. LOOK FOR WINDS TO INCREASE TO 20 TO 25 KT
LATER THIS MORNING THROUGH THE AFTERNOON, WITH GUSTS AROUND 30 KT.
INCREASING NELY WINDS WILL BUILD SEAS TO 6-9 FT...UP TO 10 FT IN THE
SRN COASTAL WATERS.

HIGH PRESSURE WILL PUSH OFF THE EASTERN NEW ENGLAND COAST SUN
NIGHT-MON, AS THE COASTAL LOW SLIDES FARTHER EAST. AS A RESULT,
WINDS WILL BECOME MORE NLY AND SLOWLY DIMINISH THROUGH MONDAY AFTN.
SEAS WL SLOWLY BEGIN TO SUBSIDE...BUT WL REMAIN IN SCA RANGE (4-7
FT) THRU MONDAY NIGHT. FLOW BACKS AROUND TO THE SOUTH TUESDAY IN
ADVANCE OF A COLD FRONT, SET TO CROSS THE REGION TUESDAY AFTERNOON-
EVENING. SEAS WILL LIKELY DROP BELOW 5 FT EARLY TUESDAY WITH
SPEEDS FALLING AOB 15 KT. HOWEVER...SCA CONDITIONS AGAIN APPEAR
POSSIBLE BEHIND THE FRONT TUES NIGHT-WEDS.

&&

.AKQ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
NC...NONE.
VA...NONE.
MARINE...SMALL CRAFT ADVISORY UNTIL 6 AM EDT MONDAY FOR ANZ630>638.
     SMALL CRAFT ADVISORY UNTIL 6 AM EDT TUESDAY FOR ANZ650-652-654-
     656-658.

&&

$$
SYNOPSIS...ALB/TMG
NEAR TERM...ALB/TMG
SHORT TERM...ALB/TMG
LONG TERM...SAM
AVIATION...MAM
MARINE...MAM





























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