000
FXUS61 KLWX 181715
AFDLWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
115 PM EDT THU MAR 18 2010
.SYNOPSIS...
HIGH PRESSURE WILL REMAIN OVER THE AREA THROUGH FRIDAY AND WILL
PROMOTE CONTINUED WARMTH AND DRY WEATHER. A STRONG UPPER LEVEL
DISTURBANCE AND ITS ASSOCIATED COLD FRONT ARE EXPECTED TO IMPACT
THE REGION LATE SUNDAY THROUGH MONDAY.
&&
.NEAR TERM /THROUGH TONIGHT/...
HIGH PRESSURE WILL CONTINUE TO BRING DRY AND MILD CONDITIONS THIS
AFTERNOON. MAX TEMPS WILL RANGE FROM THE 50S IN THE MOUNTAINS TO
THE 60S AND LOWER 70S ACROSS MOST OTHER LOCATIONS.
&&
.SHORT TERM /FRIDAY THROUGH SATURDAY/...
WEAK UPR FLOW AND SFC HIPRES DOMINATE WEATHER FRI AND SAT. WITH H8
TEMPS EXCEEDING 5C AND AMPLE SUN DURG THE DAYS...TEMPS SHUD BE
ABLE TO RMN 10 TO 15F ABOVE AVERAGE. MAXIMA GENERALLY IN U60S/L70S
WITH MINIMA IN 40S.
&&
.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
SAT NGT...SLY FLOW INCRS AS STORM SYSTEM GATHERS STRENGTH OVR MS
VLY. POTENT SHRTWV TROF AND ASSOCIATED SFC LOPRES MOVE NEWD INTO
MID ATLC SUN AFTN/SUN NGT. WITH DECENT FORCING AND DEWPTS AOA 50F
OVNGT SUN...ADDED TSTMS INTO FCST OF LIKELY POPS. H5 LOPRES PASSES
THRU MON...WITH CHANCE OF SHWRS AND COOLER TEMPS. HOWEVER...WITH
PROGRESSIVE...QUASI-ZONAL FLOW...SIGNIFICANT COLD OUTBREAK NOT
EXPECTED BEHIND THIS STORM...WITH TEMPS REBOUNDING TO ABOVE
NORMAL AS HIPRES RETURNS FOR TUE AND WED.
&&
.AVIATION /17Z THURSDAY THROUGH MONDAY/...
VFR CONDITIONS ALONG WITH LIGHT NORTHWEST WINDS WILL CONTINUE
THROUGH TONIGHT.
CLR SKIES AND LGT WINDS XPCD THRU SAT NGT. INCRG MSTR/CLOUDS IN
ADVANCE OF STORM SYSTEM BY SUN...WITH SCT SHWRS/SUB-VFR CONDS PSBL
SUN AFTN. SHWRS/TSTMS LIKELY...ALONG WITH SUB-VFR VSBYS/CIGS SUN NGT
AS COLD FRONT MOVES ACRS THE AREA.
&&
.MARINE...
LIGHT WINDS THIS MORNING WILL TURN ONSHORE THIS AFTERNOON. HIGH
PRESSURE WILL CONTINUE TO BRING LIGHT WINDS TONIGHT.
DRY CONDS AND LGT WINDS THRU ERY SUN. A COLD FRONT PASSES ACRS THE
WATERS SUN NGT...WITH SHWRS/TSTMS LIKELY ACRS THE AREA. WNW WINDS
INCR BEHIND THE FRONT...AND SMALL CRAFT ADVISORIES MAY BE WARRANTED
MON AND TUE.
&&
.TIDES/COASTAL FLOODING...
TIDAL ANOMALIES WILL CONTINUE TO DROP THROUGH TONIGHT. WATER
LEVELS SHOULD REMAIN BELOW LEVELS FOR MINOR COASTAL FLOODING.
THEREFORE...NO ADVISORY IS ANTICIPATED.
&&
.LWX WATCHES/WARNINGS/ADVISORIES...
DC...NONE.
MD...NONE.
VA...NONE.
WV...NONE.
MARINE...NONE.
&&
$$
LASORSA/KRAMAR/SBK
