National Weather Service Forecast for: Millersville MD Issued by: National Weather Service Baltimore, MD/Washington, D.C.

Updated: 6:27 am EDT Sep 3, 2010

Today Partly Sunny Tonight Partly Cloudy Saturday Breezy Saturday Night Mostly Clear Sunday Sunny Sunday Night Mostly Clear Labor Day Sunny Monday Night Mostly Clear Tuesday Sunny Hi 89 °F Lo 65 °F Hi 79 °F Lo 54 °F Hi 77 °F Lo 54 °F Hi 83 °F Lo 61 °F Hi 92 °F

Forecast from NOAA-NWS for Millersville MD.

Forecast Discussion:

000
FXUS61 KLWX 030708 AAA
AFDLWX

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
308 AM EDT FRI SEP 3 2010

.SYNOPSIS...

HURRICANE EARL IS LOCATED 85 MILES SOUTHEAST OF CAPE HATTERAS...
AND WILL MOVE RAPIDLY NORTHEAST AWAY FROM THE DELMARVA THIS
AFTERNOON. A COLD FRONT WILL MOVE THROUGH THE MID ATLANTIC REGION
TONIGHT...BRINGING COOLER CONDITIONS FOR THE HOLIDAY WEEKEND.
TEMPERATURES WILL SLOWLY WARM EARLY NEXT WEEK AS HIGH PRESSURE
RETURNS TO THE AREA.

&&

.NEAR TERM /TODAY/...

06Z IAD BALLOON WAS LAUNCHED AT 1 AM.

XTNSV CS HAS OVRSPRD THE MID ATLC RGN AHEAD OF HRCN EARL...
BRINGING AN END TO ONE OF THE LONGEST CLD FREE PDS I CAN RECALL IN
THE MID ATLC RGN. THE CLD CVR HAS AIDED IN KEEPING OVRNGT TEMPS
XTRMLY WARM ACROSS THE CWA - IN FACT SOME RECORD HIGH MINS COULD
FALL. 9/3 DC HIGH MIN RECORD IS 68 SET IN 1926..,BWI ALSO 68 SET
IN 1935. ATTM DCA IS 79 AND BWI 74. QUSTN WL LKLY BE HOW MUCH
COOLING WL OCCUR THIS EVE AFTR THE CD FNT MOVES THRU...MY GUESS AT
THE LEAST WL BE THAT DC WL LKLY ONLY DROP INTO THE L70S SO AN 84
YR RECORD SHOULD FALL. MAYBE THIS WL BE THE LAST HEAT RECORD TO
FALL FOR AWHILE?

THE NAME EARL IS ALL OVR PRINT AND THE AIRWAVES. WE`VE BEEN DIALED
INTO THE KMHX 88D ALL NGT WHICH SHOWS THE EYE CENTER 85 MILES SE OF
HATTERAS. CURRENT MVNT IS NNE AT 18 MPH. ALL GUIDANCE CONTS TO
SHOW THE STORM MOVG DUE E OF ORF ARND 8 AM AND WELL E OF THE
DELMARVA BY 2 PM. IMPACTS HERE WL LKLY BE THE FOREMENTIONED CLD
CVR...AND PSBLTY OF RW IN OUTER RAIN BANDS IN THE ERN PART OF THE
AREA. PROBLEM WL BE AS THESE BANDS APRCH ON THE WRN SIDE OF THE
STORM THE HRCN WL BE MOVG AWAY.

THU`S HIGH TEMPS 93-97 DEGS AT OBS SITES. TDA SHOULD BE THE LAST
90+ DAY UNTIL AT LEAST NEXT WK (!) BUT W/ THE CLD CVR THE HIGHS WL
BE MORE LK 90.

&&

.SHORT TERM /TONIGHT/...

03Z SFC ANLYS SHOWED A CD FNT ACROSS ERN IL. THIS WL MOVE INTO THE
CWA THIS EVE. AS MUCH AS WE COULD USE SOME RA I`M AFRAID THAT
WON`T BE HAPPENING. AS FNT MOVES E OF THE MTNS BLV PCPN WL
WEAKEN/END PRETTY QUICKLY AS ENERGY GETS ABSORBED BY HRCN EARL AS
IT TRACKS E OF LONG ISLAND. ONLY MANIFESTATION OF THE FROPA WL BE
NWRLY BRZS AND SOME WELCOME LOWER DWPTS WHICH WL GIVE THE MID ATLC
RGN A GLIMPSE OF AUTUMN. TEMPS TNGT IN THE 50S W OF I-81...60S
E BUT STILL ONLY A70 ALONG THE CHES BAY.

&&

.LONG TERM /SATURDAY THROUGH THURSDAY/...

A COLD FRONT WILL CONTINUE TO MOVE OFF TO OUR EAST SATURDAY WHILE AN
UPPER-LEVEL TROUGH SWINGS THROUGH THE REGION BEHIND THE BOUNDARY.
EARL WILL CONTINUE TO RAPIDLY MOVE NORTHEAST THROUGH NOVA SCOTIA. A
TIGHT PRESSURE GRADIENT BETWEEN SURFACE HIGH OVER THE MIDWEST AND
LOWER PRESSURES ASSOCIATED WITH EARL WILL BRING BREEZY CONDITIONS
SATURDAY. MUCH COOLER CONDITIONS ARE ALSO EXPECTED DUE TO STRONG
COLD ADVECTION BEHIND THE COLD FRONT. DESPITE PLENTY OF
SUNSHINE...MAX TEMPS WILL ONLY RANGE FROM THE 60S IN THE MOUNTAINS
TO THE UPPER 70S AND LOWER 80S ACROSS THE WASHINGTON AND BALTIMORE
METROPOLITAN AREAS. WIND GUSTS AROUND 25 TO 30 MPH ARE EXPECTED LATE
SATURDAY MORNING THROUGH SATURDAY AFTERNOON.

HIGH PRESSURE WILL SETTLE OVERHEAD SATURDAY NIGHT CAUSING WINDS TO
DIMINISH. A GOOD SETUP FOR RADIATIONAL COOLING IS EXPECTED DUE TO
MAINLY CLEAR SKIES AND LIGHT WINDS ALONG WITH LOW DEWPOINTS. MIN
TEMPS WILL RANGE FROM THE LOWER 40S ACROSS COLDER VALLEYS TO THE MID
AND UPPER 50S IN DOWNTOWN WASHINGTON/BALTIMORE.

SURFACE HIGH WILL REMAIN OVER THE REGION THROUGH THE MIDDLE OF NEXT
WEEK. THE UPPER-LEVEL TROUGH WILL MOVE OFF TO THE EAST AND ANOTHER
STRONG RIDGE OF HIGH PRESSURE IS EXPECTED TO BUILD IN BEHIND THIS
SYSTEM. MORE DRY CONDITIONS ARE EXPECTED ALONG WITH A WARMING TREND
IN TEMPERATURES. MAX TEMPS ARE EXPECTED TO BE IN THE 90S FOR TUESDAY
AND WEDNESDAY ACROSS MOST LOCATIONS.

ANOTHER COLD FRONT WILL PASS THROUGH THE REGION WEDNESDAY NIGHT INTO
THURSDAY. MOST LOCATIONS WILL REMAIN DRY WITH THE FRONTAL
PASSAGE...BUT COOLER CONDITIONS WILL FOLLOW FOR THE LATTER PORTION
OF THE WEEK.

&&

.AVIATION /06Z FRIDAY THROUGH TUESDAY/...

ALTHO CS CLDS WL OVR THE RGN MUCH OF TDA SKIES WL BE VFR. BWI/MTN
COULD PSBLY SEE A STRAY RW/030 CIG BUT THAT WOULD BE WORSE CASE
SCENARIO. W/ HRCN EARL TRACKING WELL OFF THE DELMARVA FLYING OPS
SHOULD BE MUCH SMOOTHER TDA THAN WHAT WAS THOUGHT TO BE PSBL A FEW
DAYS AGO. NO PROBS W/ FLYING TNGT.

BREEZY CONDITIONS ARE EXPECTED BEHIND A COLD FRONT SATURDAY.
WEST-NORTHWEST WINDS WILL GUST AROUND 20-25 KNOTS LATE SATURDAY
MORNING THROUGH SATURDAY AFTERNOON. HIGH PRESSURE WILL BUILD
OVERHEAD SATURDAY NIGHT CAUSING WINDS TO DIMINISH.

HIGH PRESSURE WILL REMAIN OVERHEAD THROUGH EARLY NEXT WEEK.



&&

.MARINE...

NOWHERE IN OUR WATERS PRSNTLY XPRNCG SCA LVL WINDS...BUT BELIEF IS
THESE WL OCCUR LATER THIS MRNG IN THE LOWER PTMC AND ON CHES BAY.
HRCN EARL WL TRACK RAPIDLY NE AWAY FM THE DELMARVA THIS AFTN
BRINGING SCA LVL WINDS TO AN END.

HAVE ISSUED A SMALL CRAFT ADVISORY FOR GUSTY WINDS BEHIND A COLD
FRONT SATURDAY. WIND GUSTS AROUND 20-25 KNOTS ARE EXPECTED WITH THE
STRONGEST WINDS LATE SATURDAY MORNING THROUGH SATURDAY AFTERNOON.

HIGH PRESSURE WILL BUILD OVERHEAD SATURDAY NIGHT CAUSING WINDS TO
DIMINISH. HIGH PRESSURE WILL REMAIN OVERHEAD THROUGH EARLY NEXT
WEEK.

&&

.TIDES/COASTAL FLOODING...

CSTL FLD ADVSRY IS BEING DROPPED. WE ARE AT OR APRCHG HIGH TIDE NOW AND
WATER LVLS ARE BARELY ABV NRML. EARL WL BE TRACKING WELL E OF THE
WATERS EARLY THIS AFTN. THE NEXT HIGH TIDE WL BE THE LOWER OF THE
TWO IN THE DAY.

&&

.FIRE WEATHER...

A DRY COLD FRONT WILL PASS THROUGH THE REGION TONIGHT. A TIGHT
PRESSURE GRADIENT BEHIND THE FRONT WILL CAUSE BREEZY CONDITIONS
SATURDAY. WEST-NORTHWEST WINDS AROUND 15 TO 20 MPH ARE EXPECTED WITH
GUSTS AROUND 25 TO 30 MPH. A RAPID DECREASE IN DEWPOINTS BEHIND THE
BOUNDARY WILL CAUSE THE RELATIVE HUMIDITY TO DROP CLOSE TO 30
PERCENT ACROSS MOST LOCATIONS EAST OF THE ALLEGHENY FRONT. THE
COMBINATION OF LOW RELATIVE HUMIDITY...GUSTY WINDS...AND LOW FUEL
MOISTURE DUE TO THE RECENT DRY WEATHER WILL POSE AN ENHANCED THREAT
FOR THE SPREAD OF WILDFIRES LATE SATURDAY MORNING THROUGH SATURDAY
AFTERNOON. A RED FLAG WARNING MAY BE WARRANTED FOR PORTIONS OF THE
AREA.


&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...NONE.
MD...NONE.
VA...NONE.
WV...NONE.
MARINE...SMALL CRAFT ADVISORY UNTIL 2 PM EDT THIS AFTERNOON FOR
     ANZ530>533-537>542.
     SMALL CRAFT ADVISORY FROM 6 AM TO 6 PM EDT SATURDAY FOR
     ANZ530>543.
     SMALL CRAFT ADVISORY UNTIL 6 PM EDT THIS EVENING FOR ANZ534-
     543.

&&

$$

PRODUCTS...WOODY!/BJL

NWS LWX Office Area Forecast Discussion