Area Forecast Discussion
Issued by NWS Sterling, VA

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000 FXUS61 KLWX 201332 AFDLWX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 932 AM EDT SUN JUL 20 2014 .SYNOPSIS... HIGH PRESSURE IS STATIONED OFF THE EAST COAST. TEMPERATURES WILL SLOWLY RISE THROUGH MIDWEEK AHEAD OF A COLD FRONT THAT IS EXPECTED TO MOVE INTO THE AREA THURSDAY. HIGH PRESSURE IS EXPECTED TO RETURN TO THE MID ATLANTIC STATES TO END THE WORKWEEK. && .NEAR TERM /UNTIL 6 PM THIS EVENING/...
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SURFACE HIGH CONTINUES TO EXTEND FROM THE NORTHEAST COAST DOWN THROUGH THE MID-ATLANTIC. SATELLITE IMAGERY SHOWS PLENTY OF CLOUDS ACROSS THE CWA. THERE WERE A FEW SPRINKLES/LIGHT SHOWERS ACROSS THE BALTIMORE AREA EARLIER THIS MORNING BUT THOSE HAVE SINCE MOVED AWAY/DIMINISHED...LEAVING THE CWA DRY AT 13Z. A FEW BREAKS IN THE CLOUDS MAY BECOME APPARENT THIS AFTERNOON...BUT THE FLAVOR OF THE DAY WILL BE FOR MOSTLY CLOUDY SKIES. EXPECT SOME SHOWERS TO ALSO SHOW UP THIS AFTERNOON...PRIMARILY NEAR/WEST OF THE BLUE RIDGE INITIALLY BUT LATER IN THE AFTERNOON INTO THIS EVENING ISOLATED SHOWERS MAY EXTEND INTO THE WASHINGTON/BALTIMORE METRO AREA.
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&& .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM MONDAY/... TONIGHT...ISOLATED SHOWERS PERSIST AS FLOW BECOMES ELY WITH THE TROUGH AXIS DRIFTING EAST. LOW CLOUD CEILINGS POSSIBLE DUE TO CONTINUED ONSHORE FLOW...AND AS INDICATED BY BOTH NAM AND GFS BUFR SOUNDINGS. MIN TEMPS A FEW DEGREES ABOVE NORMAL DUE TO CLOUDS...MID 60S INLAND...UPR 60S/70F URBAN AND NEAR SHORE. MONDAY...SELY FLOW AS THE SFC RIDGE AXIS IS A LITTLE FARTHER TO THE COAST. UPR TROUGH IS OVER THE AREA WITH DIURNAL SCATTERED SHOWERS AND THUNDERSTORMS I-95 AND WEST. MAX TEMPS MID 80S WITH BROKEN CLOUD COVER. && .LONG TERM /MONDAY NIGHT THROUGH SATURDAY/... SINCE THE SUMMER SOLSTICE WE`VE LOST 23 MINUTES OF DAYLGT. ONE MONTH HENCE WE`LL HV LOST ANOTHER 1 HR 3 MIN. AS I`VE NOTED SVRL TIMES IN DSCNS THIS MONTH THIS HAS NOT SEEMED TO BE A "NRML" MID SUMMER UPR LVL PATTERN...NOR DOES IT APPEAR THAT THERE WL BE ONE DURG THE XTND PART OF THIS FCST. DAYTIME TEMPS SHOULD RISE BOTH TUE AND WED...INTO THE L90S WED...BUT STILL NOTHING OUT-OF-THE-ORDINARY FOR THE LATTER 3RD OF JUL. IT STILL APPEARS THAT A CD FNT WL BE TRACKING INTO THE RGN THU. SWRN U.S RDG WL BE INTENSIFYING W/ TROFFING DVLPG OVR ERN CANADA AND DOWN THE ERN SEABOARD. AHD OF THE FNT TSTM CHCS WHOULD BE INCRSG WED AFTN/EVE. AT THIS MOMENT SVR THREAT LOOKS LOW DURG MIDWK. THE WK LOOKS TO END ON A HIGH NOTE AS HIGH PRES BUILDS IN BEHIND THE FNT. FRI SHOULD SEE CLRG SKIES..PERHAPS DWPTS DROPPING BACK INTO THE 50S. HIGHS IN THE LM80S...LOWS IN THE 60S. && .AVIATION /13Z SUNDAY THROUGH THURSDAY/...
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LESS THAN 10 KT ONSHORE FLOW THROUGH MONDAY (NELY TODAY...ELY TONIGHT...SELY MONDAY). SCATTERED SHOWERS EXPECTED NEAR MRB/CHO THIS AFTERNOON...AND CAN/T RULE OUT ISOLATED SHOWERS TOWARD THE HUBS LATER THIS AFTERNOON/EVENING. CHANCE OF SHRA/TSRA ACROSS ALL TERMINALS MONDAY. GNRLY VFR CONDS XPCTD MON NGT AND TUE. ISOLD TSTMS PSBL TUE AFTN THRU MIDDAY WED...THEN CHCS XPCTD TO INCRS AHD OF A CD FNT FOR LATER WED INTO THU.
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&& .MARINE...
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GENERALLY 10 TO 15 KT ONSHORE FLOW FROM HIGH PRESSURE RIDGE DRIFTING EAST OVER THE AREA THROUGH MONDAY (NELY TODAY...ELY TONIGHT...SELY MONDAY). SCA CONDS MAY BE XPRNCD ON THE WIDER PARTS OF THE WATERS WED NGT AND ERLY THU AHEAD OF A CD FNTL PASSAGE.
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&& .LWX WATCHES/WARNINGS/ADVISORIES... DC...NONE. MD...NONE. VA...NONE. WV...NONE. MARINE...NONE. && $$ SYNOPSIS...BAJ/ABW NEAR TERM...BPP SHORT TERM...BAJ LONG TERM...ABW AVIATION...BPP/BAJ/ABW MARINE...BPP/BAJ/ABW

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