Area Forecast Discussion
Issued by NWS Sterling, VA

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000
FXUS61 KLWX 181416
AFDLWX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1016 AM EDT FRI APR 18 2014

.SYNOPSIS...
HIGH PRESSURE OVER NEW ENGLAND WILL STRETCH SOUTHWARD TOWARD THE
MID-ATLANTIC COAST TODAY. AN AREA OF LOW PRESSURE AND COLD FRONT
MAY AFFECT THE AREA SATURDAY. A SECOND COLD FRONT LOOKS TO MOVE
THROUGH THE REGION TUESDAY. HIGH PRESSURE WILL BUILD BACK INTO THE
REGION WEDNESDAY.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
HIGH PRESSURE RIDGE WILL SLOWLY EDGE EASTWARD THROUGH THE DAY
TODAY. EASTERLY FLOW IN THE LOW LEVELS HAS PROMOTED SOME LOW CLOUDS
MAINLY EAST OF THE BLUE RIDGE. OVERTOP...THERE/S PLENTY OF CIRRUS
THAT HAVE SPREAD THIS FAR NORTH FROM AN UPPER LOW ALONG THE GULF
COAST. RESULT WILL BE MOSTLY CLOUDY SKIES TODAY. COOL WEDGE AND
FLOW OFF THE WATER WILL KEEP TEMPERATURES BELOW AVERAGE
TODAY...LIKELY ONLY REACHING MID TO UPPER 50S IN MOST LOCATIONS
ALTHOUGH A FEW SPOTS INTO THE SHENANDOAH VALLEY MAY HIT/SURPASS
60.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SATURDAY/...
TONIGHT...LOW PRESSURE DEVELOPS OVER THE FL PANHANDLE AND DRIFTS
EAST. HIGH CLOUDS WILL BE OPAQUE BY SUNSET WITH A MILD NIGHT...NO
FROST EXPECTED WITH MIN TEMPS UPR 30S IN NRN MD TO AROUND 40F FOR
THE REST OF THE CWA.

SATURDAY...OUTER RAIN BAND FROM LOW TO THE SOUTH SPREADS TOWARD
CENTRAL VA...BUT AS OF THIS TIME SEEMS TO STOP JUST SHORT OF THE LWX
CWA. CLOUDS PERSIST OVER THE AREA...BUT WITH CONTINENTAL AIR COMING
IN FROM THE NORTHWEST...EXPECT A DECENT WARMUP TO THE MID 60S FOR
LOWER ELEVATIONS. SHOULD THE LOW OR RAIN FROM IT SHIFT A BIT NORTH
THE TEMPS WOULD CERTAINLY BE SUPPRESSED.

&&

.LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/...
HIGH PRES TO THE N WL CONT TO BE IN CONTROL OF THE WX AT THE
START OF THE XTND PD...KEEPING A WELL DVLPD LOW THE WL CROSS NRN
FL WELL TO OUR S. PATTERN SHOULD RMN RLVTLY BENIGN THRU THE 1ST
PART OF THE NEW WK: IT WON`T BE UNTIL TUE THAT THE AREA SHOULD SEE
ANOTHER CHC OF RA WHEN AN UPR LVL SHORT WV/CD FNT LOOK TO BE MOVG
THRU THE RGN. AT THIS TIME THERE DOES APPEAR TO BE A SVR THREAT W/
THIS SYSTEM.

HIGHS IN THE L70S MON AND TUE. LOWS IN THE LM40S MON NRNG...CLOSER
TO 50 TUE MRNG AHD OF THE FNT.

HIGH PRES BLDG BACK INTO THE RGN WED WL LKLY LEAD TO A BRZY DAY.
TEMPS 5-10 DEGS COOLER THAN TUE. LKWISE COOLER ERLY MRNG TEMPS
XPCTD THU MRNG AS THE NEXT HIGH AREA SETTLES OVR THE RGN.

&&

.AVIATION /13Z FRIDAY THROUGH TUESDAY/...
MAY CONTINUE TO CONTEND WITH MVFR CIGS INTO EARLY AFTERNOON ACROSS
MOST TERMINALS DUE TO EAST FLOW. CIGS SHOULD SCATTER LATER IN THE
AFTERNOON WITH HIGH CLOUDS OVERHEAD. LIGHT FLOW AND VFR
TONIGHT...THEN NWLY FLOW AND MID LEVEL CLOUDS SATURDAY WITH RAIN
FROM A LOW OVER GEORGIA STAYING SOUTH OF THE TERMINALS.

IN THE XTND...VFR CONDS XPCTD THE MAJORITY OF THE TIME. BIGGEST
THREAT WL BE A CD FRONT TUE WHICH WL LKLY BRING RW AND THE PSBLTY
OF REDUCED CIGS.

&&

.MARINE...
ELY FLOW 10 TO 15 KT BECOMES SLY BY LATE TODAY...THEN NLY FLOW 10 TO
15 KT ON SATURDAY. RAIN FROM A LOW OVER GA WILL APPROACH MD BAY
WATERS SATURDAY...BUT LIKELY STAY SOUTH.

MAJORITY OF THE TIME IN THE XTND PD WINDS SHOULD BE BLO SCA
VALUES. A CD FRONT MOVG THRU THE WATERS TUE WL LKLY BRING RW.
THEN AS HIGH PRES BLDS INTO THE WATERS WED SCA LVL WNDS CAN BE XPCTD.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...NONE.
MD...NONE.
VA...NONE.
WV...NONE.
MARINE...NONE.

&&

$$
BPP/BAJ/WOODY!






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