Area Forecast Discussion
Issued by NWS Sterling, VA

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000 FXUS61 KLWX 121849 AFDLWX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 249 PM EDT FRI SEP 12 2014 .SYNOPSIS...
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A COLD FRONT HAS STALLED OVER THE CAROLINAS WHILE HIGH PRESSURE BUILDS INTO THE MID ATLANTIC REGION. AN UPPER LEVEL DISTURBANCE WILL PASS THROUGH THE AREA SATURDAY. HIGH PRESSURE OVER THE GREAT LAKES WILL EXTEND SOUTH INTO THE MID ATLANTIC SUNDAY AND MONDAY.
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&& .NEAR TERM /TONIGHT/...
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MID ATLC XPRNCG A BEAUTIFUL FRI COURTESY OF HIGH PRES BLDG DOWN THE ERN SEABOARD. SKIES WL LKLY BE PC TNGT BUT THEN XPCT CLDS TO INCRS OVRNGT AS A FAST MOVG SHORT WV TRACKS INTO THE NERN U.S. AND THE STALLED FRONT OVR THE CAROLINAS IS DRAWN BACK N INTO THE MID ATLC. THERE COULD BE SOME LGT RA IN THE CENTRAL SHEN VALLY LATE TNGT BUT MAJORITY OF THE RGN SHOULD BE DRY. TEMPWISE XPCTG S PLSNT NGT. LOWS IN THE U50S MUCH OF THE AREA...LM60S IN THE CITIES AND ALONG THE BAY.
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&& .SHORT TERM /SATURDAY/...
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A PD OF WETNESS DURG THE DAY SAT AS THE PRVSLY MENTIONED SYSTEM PUSHES INTO THE MID ATLC. IT CERTAINLY HASN`T BEEN WET SO FAR THIS MONTH - IAD HAS ONLY RECORDED 0.14"...DCA 0.20"...CHO 0.27". BWI DID HV A LTL MORE RA ON THE 6TH SO BALT HAS RCVD 0/79" SO FAR. BUT THE AREA CERTAINLY COULD USE SOME RAIN. THIS IS NOT LOOKING TO BE AN OVERLY WET EVENT...ARND 1/4 INCH. HIGHS ARND 70 W OF THE BLUE RDG...M70S E.
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&& .LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/...
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HIGH PRES BLDS BACK INTO THE RGN SAT NGT. THERE WL BE A PTNL FOR FOG DVLPMNT OVRNGT SAT INTO SUN MRNG. PLSNT WX AGN XPCTD SAT NGT W/ LOWS DROPPING INTO THE U40S...LM50S E. HIGH PRES OVR THE AREA DURG THE 1ST PART OF THE NEW WK. ZONAL 500MB FLOW WITH WEAK UPPER LEVEL SUPPORT FROM PRECIPITATION NEAR A NEARLY STATIONARY BOUNDARY NEAR THE VIRGINIA/NORTH CAROLINA BORDER MONDAY. STRONG 500MB SHORTWAVE WILL SUPPORT DEVELOPMENT OF A SURFACE LOW ON THE STALLED BOUNDARY AND PUSH IT ACROSS THE CWA MONDAY NIGHT THROUGH TUESDAY MORNING. THE LOW AND ATTACHED COLD FRONT WILL MOVE OFFSHORE TUESDAY AFTERNOON. A COOLER...AIRMASS WILL BUILD OVER THE CWA THROUGH FRIDAY.
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&& .AVIATION /18Z FRIDAY THROUGH WEDNESDAY/...
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VFR CONDS XPCTD THIS EVE. CLDS WL BE ON THE INCRS LATE TNGT W/ RAIN MOVG INTO THE MID ATLC SAT MRNG. PCPN IS XPCTD TO LAST INTO MID AFTN W/ CIGS DROPPING INTO THE MVFR CAT. SKIES SHOULD BE CLRG OVRNGT SAT. THIS COULD LEAD TO FOG DVLPMNT SUN MRNG. VFR CONDS THEN XPCTD MON.
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&& .MARINE...
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WINDS DIMINISHED BLO SCA VALUES EARLY THIS AFTN SO THE ADVSRY WAS DROPPED. WINDS XPCTD TO RMN BLO SCA VALUES THROUGH THE DAY SAT...ALTHO RA IS XPCTD TO BEGIN SAT MRNG AND LAST THRU MID TO LATE AFTN. AN SCA MAY BE NEEDED SAT NGT BUT CONFIDENCE IS NOT HIGH ENUF ATTM TO ISSUE.
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&& .LWX WATCHES/WARNINGS/ADVISORIES... DC...NONE. MD...NONE. VA...NONE. WV...NONE. MARINE...NONE. && $$ PRODUCTS...WOODY!/CEM

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