Area Forecast Discussion
Issued by NWS Sterling, VA

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
-- Remove Highlighting --
-- Discussion containing changed information from previous version are highlighted. --
000 FXUS61 KLWX 181416 AFDLWX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1016 AM EDT FRI APR 18 2014 .SYNOPSIS...
-- Changed Discussion --
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.
-- End Changed Discussion --
&& .NEAR TERM /UNTIL 6 PM THIS EVENING/...
-- Changed Discussion --
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.
-- End Changed Discussion --
&& .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/...
-- Changed Discussion --
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.
-- End Changed Discussion --
&& .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...
-- Changed Discussion --
DC...NONE. MD...NONE. VA...NONE. WV...NONE. MARINE...NONE.
-- End Changed Discussion --
&& $$ BPP/BAJ/WOODY!

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.