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000
FXUS61 KLWX 250730
AFDLWX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
330 AM EDT SAT MAY 25 2013

.SYNOPSIS...

HIGH PRESSURE WILL BUILD INTO THE MID ATLANTIC REGION THROUGH THE
WEEKEND. THE HIGH WILL MOVE OFFSHORE EARLY IN THE WEEK...PROMOTING
A WARM UP.

&&

.NEAR TERM /TODAY/...

AS OF 07Z...UPR LOW IS CENTERED OVER NJ WITH BACK EDGE OF MID-LEVEL
CLOUD SHIELD BREAKING UP OVER THE MD WRN SHORE. PRECIP HAS ENDED
ACROSS THE AREA. LOW UPSLOPE CLOUDS PERSIST OVER THE LAURELS OF PA
AND THE ALLEGHENY HIGHLANDS OF MD/WV...BUT ARE EXPECTED TO CONTINUE
ERODING AS THE LLVL FLOW BACKS FROM N-NWLY TO NWLY...CHANGING THE
SOURCE REGION.

TODAY...A VORT LOBE CURRENTLY SEEN IN IR/WV OVER THE GEORGIAN BAY OF
LAKE HURON BRINGS SOME MID-LEVEL CLOUDS OVER CNTRL MD AROUND MIDDAY.
OTW SUNNY WITH DOWNSLOPING NWLY FLOW GUSTING TO AROUND 30 MPH. MAX
TEMPS UPR 60S TO 70F AT LOWER ELEVATIONS ACROSS THE CWA.

&&

.SHORT TERM /TONIGHT/...

NWLY GUSTS EASE WITH ONLY SHELTERED VALLEYS DECOUPLING. MIN TEMPS
LOW 40S INLAND WITH SOME UPR 30S IN THE SHEN VLY AND AROUND 50F
FOR URBAN/NEAR SHORE.

COOL AGAIN IN THE ALLEGHENY HIGHLANDS...WENT FOR MID 30S WITH 925
AND 850MB TEMPS PROGGED A COUPLE DEGREES HIGHER THAN NOW. DESPITE
EXPECTED MIXING WILL GO WITH A FROST ADVISORY FOR WRN PORTIONS OF
ALLEGANY...MINERAL...AND GRANT COUNTIES (DIVISION IS THE ALLEGHENY
FRONT) AS WELL AS HIGHLAND/ PENDLETON. TEMPS TEND TO DROP OFF
RAPIDLY IN CLEAR CONDITIONS AS EXPECTED TONIGHT...SO WENT FOR
MIDNIGHT TO 8 AM FOR THE HEADLINE.

&&

.LONG TERM /SUNDAY THROUGH FRIDAY/...

THE XTND PORTION OF THE FCST LOOKS PRETTY CUT AND DRIED. HIGH PRES
OVR THE AREA SUNDAY SHOULD BRING PLENTY OF SUNSHINE AND CONTINUED
COOLER THAN NRML TEMPS. ON MON HGH TEMPS SHOULD DRAW CLOSER TO
NRML - U70S. AFTR THAT DAYTIME TEMPS SHOULD CLIMB AS HIGH PRES
MOVES OFFSHORE AND A TROF DVLPS E OF THE ROCKIES RIGHT THROUGH
FRI. HIGHS IN THE U80S...PSBLY A90 BY WEEK`S END. LOWS IN THE 60S.

PCPN CHCS LOOK PRETTY SCANT IN THE COMING WK. PERHAPS AFTN/EVE
ISOLD TSTMS OVR THE MTNS FOR THE 2ND HALF OF THE WK.

&&

.AVIATION /06Z SATURDAY THROUGH WEDNESDAY/...

NWLY FLOW CONTINUES TO GUST AROUND 20 KT UNTIL SUNRISE...WITH 25 TO
30 KT THROUGH THE DAYLIGHT HOURS. GUSTS EASE THIS EVENING WITH
AROUND 10 KT OVERNIGHT. VFR WITH ANY CIGS BREAKING THIS MORNING.

IN THE XTND VFR CONDS XPCTD THRU MIDWEEK.

&&

.MARINE...

NWLY FLOW 20 TO 25 KT OVERNIGHT...INCREASING TO 30 KT DURING
DAYLIGHT HOURS WITH AN SCA. WINDS EASE THIS EVENING WITH MIDDLE/UPR
TIDAL POTOMAC DROPPING OFF THE SCA AT 8PM. REST OF WATERS SEE 20 KT
GUSTS THROUGH TONIGHT.

IN THE XTND...IT IS LKLY THAT SOME GUSTS REACHING SCA LVL WL OCCUR
ON THE BAY/LWR PTMC SUN AFTN. THEN   NO PROBS XPCTD ON THE WATERS
MEM DAY OR THRU MIDWEEK

&&

.COASTAL FLOOD...

GUSTY NW FLOW WILL CONTINUE TO PUSH WATER OUT OF THE CHESAPEAKE
BAY...WITH WATER LEVELS -1 TO -1.5 MLLW AT LOW TIDE THROUGH THIS
EVENING.

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...NONE.
MD...FREEZE WARNING UNTIL 8 AM EDT THIS MORNING FOR MDZ501.
VA...FREEZE WARNING UNTIL 8 AM EDT THIS MORNING FOR VAZ503.
WV...FREEZE WARNING UNTIL 8 AM EDT THIS MORNING FOR WVZ501-503-505.
MARINE...SMALL CRAFT ADVISORY UNTIL 6 PM EDT SUNDAY FOR ANZ530-531-538-
     539.
     SMALL CRAFT ADVISORY UNTIL 4 PM EDT SUNDAY FOR ANZ532>534-537-
     540>543.
     SMALL CRAFT ADVISORY UNTIL 8 PM EDT THIS EVENING FOR ANZ535-
     536.

&&

$$
PRODUCTS...BAJ/WOODY!