Dense Fog Advisory 14, NWS Philadelphia/Mount Holly

Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
842 PM EST THU DEC 24 2015

.SYNOPSIS...
A WEAK FRONT WILL CONTINUE TO DRIFT SOUTHWARD ACROSS OUR REGION
OVERNIGHT AND FRIDAY AS HIGH PRESSURE BUILDS IN FROM THE NORTH.
WAVES OF LOW PRESSURE WILL MOVE ALONG THE FRONT FRIDAY NIGHT AND
SUNDAY. A COLD FRONT WILL CROSS THE AREA SUNDAY NIGHT. HIGH
PRESSURE BUILDS IN FOR MONDAY. A DEEP LOW WILL MOVE UP THE
MISSISSIPPI VALLEY AND GREAT LAKES REGION NEXT WEEK. ITS
ASSOCIATED FRONTS WILL AFFECT THE WEATHER ACROSS THE MIDDLE
ATLANTIC REGION TUESDAY AND WEDNESDAY.

&&

.NEAR TERM /UNTIL 6 AM FRIDAY MORNING/...
A WEAK FRONTAL BOUNDARY WILL CONTINUE TO DROP TOWARD AND INTO OUR
REGION FROM THE NORTH OVERNIGHT. THE PRESSURE GRADIENT AROUND THE
BOUNDARY IS QUITE WEAK, SO THE WIND IS EXPECTED TO BE LIGHT AND
VARIABLE.

THE LIGHT AND VARIABLE WIND ALONG WITH THE LINGERING LOW LEVEL
MOISTURE SHOULD RESULT IN THE DEVELOPMENT OF SOME FOG AND STRATUS
OVERNIGHT IN OUR REGION. MEANWHILE, THERE REMAINS A CHANCE OF
SHOWERS MAINLY IN NORTHEASTERN MARYLAND, DELAWARE AND SOUTHERN NEW
JERSEY.

CONDITIONS ARE ANTICIPATED TO REMAIN MILD TONIGHT WITH
TEMPERATURES DROPPING ONLY INTO THE 50S IN MUCH OF OUR REGION.

&&

.SHORT TERM /6 AM FRIDAY MORNING THROUGH 6 PM FRIDAY/...
THE FRONTAL BOUNDARY WILL BE STALLED OUT ACROSS THE AREA. THERE
MAY BE SOME SCATTERED LIGHT PRECIPITATION OVER SOUTHERN AREAS IN
THE MORNING BUT THE NEXT ROUND OF MORE SIGNIFICANT PRECIPITATION
MOVES IN FROM THE SOUTHWEST IN THE MID TO LATE AFTERNOON. USED WPC
QPF FOR THE AFTERNOON RAINFALL AMOUNTS.

TEMPERATURES CONTINUE VERY MILD BUT NOT QUITE AS WARM AS TODAY
AND HIGH TEMPERATURE RECORDS ON FRIDAY ARE SEVERAL DEGREES HIGHER
VS. TODAY'S NUMBERS. SO FORECAST HIGH TEMPERATURES RIGHT NOW ARE
NEAR RECORD, BUT NOT ABOVE THE RECORDS.

&&

.LONG TERM /FRIDAY NIGHT THROUGH THURSDAY/...
AN ACTIVE PATTERN WILL BE ACROSS OUR PART OF THE COUNTRY DURING
THE EXTENDED PERIOD. THE MEAN UPPER AIR PATTERN SHOWS A WESTERN
U.S. TROUGH AND A RIDGE OFF THE SOUTHEAST U.S. COAST. SEVERAL
SYSTEMS MOVE ALONG A FRONT WHICH WILL MEANDER ACROSS THE
PLAINS...OHIO VALLEY INTO THE NORTHEAST.

THE FIRST SYSTEM IS TRANSITING THE AREA FRI NIGHT AND EARLY SAT
AS WEAK LOW PRESSURE MOVES ALONG THE FRONT. A SHORT BREAK EARLY
SAT THEN TRANSITIONS TO MORE WET WEATHER SAT AFTERNOON THROUGH
SUNDAY MORNING AS THE FRONT PUSHES BACK ACROSS THE REGION. A SHORT
BREAK LATER SUNDAY...THEN A COLD FRONT PASSES BACK THROUGH THE
AREA. OUR FCST HAS LIKELY POPS SAT AND HIGH CHC FOR SAT NIGHT INTO
SUNDAY NIGHT. TEMPERATURES ARE WARM ENOUGH TO FAVOR RAIN FOR THE
ENTIRE FORECAST AREA.

A BREAK IN THE ACTION MONDAY AS HIGH PRESSURE TO THE NORTH BUILDS
ACROSS THE AREA. THIS WILL BE FOLLOWED BY ANOTHER LOW PRESSURE
SYSTEM (AGAIN MOVING ACROSS THE PLAINS-MIDWEST-GREAT LAKES) AND
ITS ASSOCIATED FRONTS. THIS SYSTEM WILL AFFECT THE AREA LATER MON
NIGHT INTO TUE NIGHT. POPS GO INTO THE CHC RANGE MON NIGHT...THEN
UP INTO THE LIKELY CATEGORY TUE BEFORE TAPERING BACK TUE NIGHT.
THE TEMPERATURES AT THE ONSET OF PRECIPITATION MON NIGHT/EARLY TUE
MAY BE COLD ENOUGH IN THE INTERIOR AREAS TO PRODUCE SOME
SLEET/SNOW...SO WE HAVE CONTINUED THIS FROM THE PRECIOUS FCST. IT
IS STILL SEVERAL DAYS AWAY...AND WHILE THE GFS/EC BOTH AGREE ON
THE OVERALL PATTERN...MANY THINGS CAN CHANGE BETWEEN NOW AND THEN.
WE WILL CONTINUE TO MONITOR FRI/SAT AND UPDATE AS NEEDED.

QUITE A BIT OF UNCERTAINTY BEYOND DAY 5 ATTM...PROBABLY ANOTHER
BREAK WED...FOLLOWED BY ANOTHER SYSTEM NEXT THU. WENT ALONG WITH
THE WPC POPS/TEMPS FOR NOW. TEMPERATURES WILL BE CLOSER TO...BUT
STILL ABOVE...NORMAL.

&&

.AVIATION /02Z FRIDAY THROUGH TUESDAY/...
THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY AND SURROUNDING AREAS.

CONDITIONS WERE GENERALLY VFR EARLY THIS EVENING. HOWEVER,
CEILING AND VISIBILITY VALUES ARE ANTICIPATED TO CONTINUE LOWERING
INTO THE MVFR AND IFR CATEGORIES DURING THE NIGHT WITH ABUNDANT
LOW LEVEL MOISTURE IN PLACE ALONG WITH A LIGHT AND VARIABLE WIND.
ANY SHOWER ACTIVITY TONIGHT IS EXPECTED TO REMAIN GENERALLY TO
THE SOUTH AND EAST OF KMIV AND KACY.

CONDITIONS ARE EXPECTED TO FAVOR THE MVFR RANGE ON FRIDAY BUT IT
IS A LOW CONFIDENCE FORECAST. LIMITED ATMOSPHERIC MIXING SHOULD
KEEP WHATEVER LOW CLOUDS THAT DEVELOP IN PLACE FOR MUCH OF THE
DAY. AN AREA OF RAIN IS ANTICIPATED TO EXPAND INTO OUR REGION FROM
THE SOUTHWEST DURING THE LATE AFTERNOON. THE WIND SHOULD REMAIN
LIGHT AND VARIABLE UNTIL LATE IN THE DAY WHEN A FRONTAL BOUNDARY
ARRIVES FROM THE NORTH.

OUTLOOK...

FRI NIGHT/SAT...WIDESPREAD LOWER CIGS/VSBYS.

SAT NIGHT/SUN...MOSTLY VFR S/E...LOWER CIGS/VSBYS N/W.

MONDAY...MOSTLY VFR.

MON NIGHT THRU TUE...LOWER CIGS/VSBYS. MIXED PRECIP N/W.

&&

.MARINE...
THE SMALL CRAFT ADVISORY WAS DISCONTINUED FOR DELAWARE BAY EARLY
THIS EVENING AS THE POTENTIAL FOR 25 KNOT WIND GUSTS ENDED. THE
SMALL CRAFT ADVISORY WILL REMAIN IN PLACE FOR OUR OCEAN WATERS
UNTIL 100 PM FRIDAY MAINLY FOR SEAS. WAVE HEIGHTS ARE FORECAST TO
REMAIN IN THE 4 TO 6 FOOT RANGE INTO FRIDAY MORNING.

SCATTERED SHOWERS AND PATCHY FOG ARE ANTICIPATED OVERNIGHT INTO
FRIDAY MORNING WITH A STEADIER RAIN POSSIBLY ARRIVING FROM THE
SOUTHWEST LATE IN THE DAY.

OUTLOOK...
GENERALLY UNSETTLED CONDITIONS ACROSS THE WATERS. SCA WINDS/SEAS
EXPECTED FOR MUCH OF THE EXTENDED PERIOD ON THE COASTAL WATERS.
SEVERAL SYSTEMS AFFECTING THE WATERS FRI NIGHT/EARLY SAT...SUN/SUN
NGT AND TUE. SUB-SCA ACROSS DEL BAY...BUT CONDITIONS CLOSE TO SCA
CRITERIA OVER LOWER DEL BAY SAT AND MON NGT/TUE.

&&

.CLIMATE...
ALL 8 OF OUR PRIMARY CLIMATE SITES HAVE BROKEN THEIR RECORD HIGHS
FOR TODAY. RECORD EVENT REPORTS HAVE BEEN ISSUED.

WE FELL A BIT SHORT OF REACHING THE ALL-TIME RECORD DAILY HIGH
TEMPERATURES FOR THE MONTH OF DECEMBER. THEY ARE LISTED BELOW.

        MONTHLY RECORD          SITE    HIGHS FOR DECEMBER
DATE(S)SET
----    ------------------      -----------

PHL     73                      12/7/1998, 12/4/1998

ACY     77                      12/7/1998

ILG     75                      12/4/1998

ABE     72                      12/1/2006, 12/4/1998, 12/29/1984

TTN     76                      12/7/1998

GED     77                      12/1/1991

RDG     77                      12/29/1984

MPO     67                      12/13/2015

THE UNSEASONABLE WARMTH WILL CONTINUE RIGHT INTO THE WEEKEND ON
FRIDAY, DECEMBER 25TH AND SUNDAY, DECEMBER 27TH.

THE FOLLOWING TABLE LISTS THE DAILY RECORD HIGHS FOR DECEMBER 25TH
AND 27TH FOR OUR EIGHT PRIMARY CLIMATE SITES.

SITES   DECEMBER 25      DECEMBER 27
-----   -----------       -----------

ACY     70 1982          67 1973

PHL     68 1964          64 1949

ILG     70 1982          65 1973

ABE     65 1964          59 1949

TTN     69 1889          63 1949

GED     71 1964          69 1973

RDG     68 1964          65 1936

MPO     60 1965          56 1964

DECEMBER 2015 IS ON PACE TO SET THE ALL-TIME MONTHLY RECORD FOR THE
WARMEST DECEMBER AT PHILADELPHIA. THE AVERAGE TEMPERATURE FROM
DECEMBER 1-23RD AT PHL AIRPORT IS 50.4F (11.9F ABOVE NORMAL).
OFFICIAL MONTHLY TEMPERATURE RECORDS FOR PHILADELPHIA DATE BACK TO
1872.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...NONE.
NJ...NONE.
DE...NONE.
MD...NONE.
MARINE...SMALL CRAFT ADVISORY UNTIL 1 PM EST FRIDAY FOR ANZ450>455.

&&

SYNOPSIS...O'HARA
NEAR TERM...IOVINO
SHORT TERM...SZATKOWSKI
LONG TERM...O'HARA
AVIATION...IOVINO/O'HARA
MARINE...IOVINO/O'HARA
CLIMATE...STAFF

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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1003 PM EST THU DEC 24 2015

DEZ002-003-MDZ015-019-020-NJZ021-023-024-250345-
KENT-INLAND SUSSEX-CAROLINE-TALBOT-QUEEN ANNE'S-CAPE
MAY-CUMBERLAND-ATLANTIC COASTAL CAPE MAY-
1003 PM EST THU DEC 24 2015

...A LINE OF HEAVY SHOWERS AND EMBEDDED THUNDERSTORMS WILL AFFECT
KENT...NORTHERN SUSSEX...TALBOT...SOUTHEASTERN QUEEN
ANNE'S...CAROLINE...SOUTHWESTERN CAPE MAY AND SOUTHERN CUMBERLAND
COUNTIES...

AT 1000 PM EST...A LINE OF HEAVY SHOWERS AND EMBEDDED THUNDERSTORMS
WAS ALONG A LINE EXTENDING FROM TALBOT TO NEAR BRIDGEVILLE...AND
MOVING NORTHEAST AT 45 MPH.

THESE STORMS WILL BE NEAR...
  SEAFORD AND BRIDGEVILLE AROUND 1005 PM EST.
  EASTON AND ELLENDALE AROUND 1010 PM EST.
  MILFORD...SKIPTON AND WYE MILLS AROUND 1015 PM EST.
  MILTON AND CORDOVA AROUND 1020 PM EST.
  QUEEN ANNE...STARR AND GRIFFIN AROUND 1025 PM EST.
  DENTON...OAKLAND...RIDGELY AND JUMPTOWN AROUND 1030 PM EST.
  GREENSBORO AROUND 1035 PM EST.
  GOLDSBORO AROUND 1040 PM EST.

OTHER LOCATIONS IMPACTED BY THESE STORMS INCLUDE LITTLE CREEK...
FREDERICA...RIVERVIEW...MAGNOLIA...HOUSTON...FARMINGTON...ERMA...
HENDERSON...VILLAS AND WHITESBORO-BURLEIGH.

A BRIEF PERIOD OF HEAVY RAIN WILL OCCUR WITH THESE SHOWERS AND
THUNDERSTORMS WHICH WILL QUICKLY CAUSE PONDING ON ROADWAYS AND POOR
DRAINAGE AREAS.

A BRIEF WIND GUST AROUND 25 MPH MAY ALSO OCCUR.

LAT...LON 3886 7626 3879 7620 3891 7620 3928 7543
      3920 7512 3919 7512 3921 7519 3915 7541
      3883 7520 3912 7489 3906 7475 3856 7569
      3869 7577 3868 7594 3857 7604 3876 7622
      3871 7628 3877 7632 3867 7634 3876 7638
TIME...MOT...LOC 0300Z 241DEG 41KT 3882 7627 3872 7555

ROBERTSON

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