221
FXUS61 KLWX 120000
AFDLWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
800 PM EDT THU SEP 11 2025
SYNOPSIS
SURFACE HIGH PRESSURE REMAINS OVERHEAD THROUGH THE END OF THE WEEK
AND INTO THE WEEKEND. DRY CONDITIONS CONTINUE THROUGH THE WEEKEND AS
A MOISTURE-STARVED COLD FRONT DROPS THROUGH THE FORECAST AREA.
HIGH PRESSURE RETURNS THROUGH MIDWEEK.
NEAR TERM /UNTIL 6 AM FRIDAY MORNING/
SURFACE HIGH PRESSURE WILL CONTINUE TO BUILD OVERHEAD WITH DRY
CONDITIONS PERSISTING THROUGH THE OVERNIGHT. AFTER AN ISOLATED
SHOWER NEAR I-95 FROM ALEXANDRIA TO WOODBRIDGE EARLIER, CLOUD
COVER DECREASES TONIGHT WITH MOSTLY CLEAR SKIES EXPECTED.
OVERNIGHT LOW TEMPERATURES WILL BE IN THE 50S FOR MOST WITH ONLY
THOSE NEAR THE WATERS AND METRO AREAS STAYING IN THE 60S.
SHORT TERM /6 AM FRIDAY MORNING THROUGH SATURDAY NIGHT/
SURFACE HIGH PRESSURE REMAINS OVERHEAD FRIDAY AND SATURDAY AS AN
UPPER LEVEL TROUGH PIVOTS OVER THE EAST COAST. MOSTLY SUNNY SKIES,
DRY CONDITIONS, AND HIGH TEMPERATURES IN THE LOW 80S ARE EXPECTED
ACROSS THE FORECAST AREA BOTH DAYS. THE EXCEPTION WILL BE HIGHER
ELEVATIONS WHERE HIGH TEMPERATURES STAY IN THE 70S. LIGHT WINDS OUT
OF THE NORTHEAST BECOME CALM OVERNIGHT WITH PATCHY FOG POSSIBLY
DEVELOPING IN THE VALLEYS. OVERNIGHT LOW TEMPERATURES WILL BE
IN THE 50S FOR MOST WITH THOSE NEAR THE METRO AREAS STAYING IN
THE 60S.
AS HIGH PRESSURE SHIFTS EASTWARD ON SATURDAY, WINDS SHIFT TO
SOUTHERLY. TEMPERATURES WILL BE SLIGHTLY WARMER COMPARED TO FRIDAY
DUE TO SOUTHERLY FLOW. LIMITED CLOUD COVER AND DRY CONDITIONS
CONTINUE SATURDAY AFTERNOON. OVERNIGHT LOW TEMPERATURES WILL BE
SLIGHTLY WARMER WITH THE I-95 CORRIDOR STAYING IN THE 60S.
ELSEWHERE, LOW TEMPERATURES IN THE 50S ARE EXPECTED.
LONG TERM /SUNDAY THROUGH THURSDAY/
UPPER TROUGH OVER THE NORTHEAST IS EXPECTED TO LIFT OUT SUNDAY WITH
A REX BLOCK PATTERN DEVELOPING OVER THE UPPER MIDWEST AND SOUTHERN
ONTARIO. A DRY COLD FRONT WILL CROSS THE AREA SUNDAY NIGHT WITH SFC
HIGH PRESSURE BUILDING FOR MUCH OF NEXT WEEK. CONTINUED DRY WEATHER
IS EXPECTED ALONG WITH ABOVE NORMAL TEMPERATURES.
AVIATION /00Z FRIDAY THROUGH TUESDAY/
A BRIEF SHIFT TO EAST/SOUTHEAST WINDS WILL SHIFT TO NORTH/NORTHEAST
THROUGH FRIDAY MORNING BEFORE SHIFTING TO EASTERLY IN THE
AFTERNOON. ON SATURDAY, WINDS SHIFT SOUTH AS SURFACE HIGH
PRESSURE SHIFTS OFFSHORE. EACH NIGHT, WINDS BECOME LIGHT AND
VARIABLE ACROSS ALL TERMINALS. VFR CONDITIONS ARE EXPECTED TO
CONTINUE THIS AFTERNOON THROUGH SATURDAY AS HIGH PRESSURE
REMAINS IN CONTROL. KCHO MAY SEE REDUCTIONS IN VISIBILITY AS
PATCHY FOG DEVELOPS TONIGHT, THOUGH VFR CONDITIONS ARE EXPECTED
TO RETURN EARLY FRIDAY AND PERSIST THROUGH SATURDAY.
NO SIGNIFICANT WEATHER IS EXPECTED SUNDAY INTO MONDAY.
MARINE
LIGHT AND SOMEWHAT VARIABLE WINDS SHIFT TO NORTHEAST BY FRIDAY
MORNING BEFORE SHIFTING TO EASTERLY IN THE AFTERNOON. ON
SATURDAY, WINDS SHIFT SOUTH AS SURFACE HIGH PRESSURE SHIFTS
OFFSHORE. WINDS ARE EXPECTED TO REMAIN BELOW SCA CRITERIA EACH
DAY, BLOWING 5 TO 10 KNOTS EACH AFTERNOON. NO MARINE HAZARDS ARE
EXPECTED THROUGH SATURDAY.
SUB-SCA WINDS ARE EXPECTED THROUGH TUE.
TIDES/COASTAL FLOODING
SLACKENING WINDS MAY ALLOW SOME WATER TO SLOSH NORTHWARD THROUGH
FRIDAY WITH MINOR FLOODING POSSIBLE IN SENSITIVE LOCATIONS
DURING THE AFTERNOON AND EVENING. THE PATTERN DOESN'T CHANGE
APPRECIABLY, SO SPOTTY MINOR FLOODING MAY CONTINUE INTO THE
WEEKEND, ESPECIALLY SINCE WINDS EVENTUALLY TURN SOUTHERLY.
LWX WATCHES/WARNINGS/ADVISORIES
DC...NONE.
MD...COASTAL FLOOD ADVISORY UNTIL MIDNIGHT EDT TONIGHT FOR MDZ014.
VA...COASTAL FLOOD ADVISORY UNTIL 2 AM EDT FRIDAY FOR VAZ054.
WV...NONE.
MARINE...NONE.
SYNOPSIS...AVS/DHOF
NEAR TERM...AVS/DHOF
SHORT TERM...AVS/DHOF
LONG TERM...LFR
AVIATION...AVS/LFR/DHOF
MARINE...AVS/LFR/DHOF
TIDES/COASTAL FLOODING...LWX
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