Special Marine Warning 109, NWS Philadelphia/Mount Holly

Area Forecast Discussion
National Weather Service Mount Holly NJ
1234 AM EDT THU AUG 18 2016

.SYNOPSIS...
A cold front will continue to weaken tonight into Thursday as it
continues to sag to our south. A couple of weak surface troughs
are expected to affect the area Thursday and Friday. High pressure
builds across northern New England Saturday, while trying to nose
down the east coast. A cold front from the west is expected to
move across the area Sunday night into Monday morning. High
pressure will then return for Tuesday into Wednesday.

&&

.NEAR TERM /UNTIL 6 AM THIS MORNING/...
The last of the severe thunderstorms was passing over the coastal
waters of Delaware and off the southern coast of New Jersey around
12:30 AM. The convection will continue to push out to sea. A
trailing area of stratiform rain will linger for a few hours over
northeastern Maryland, Delaware, southern New Jersey and
southeastern Pennsylvania. Meanwhile, scattered showers will pass
across our northern counties from west to east.

The potential for additional severe weather and heavy rain is low
as conditions have stabilized over our region.

The sky will remain cloudy overnight and the wind should be light
and variable. Low temperatures will favor the upper 60s in the
north and the lower and middle 70s elsewhere.

&&

.SHORT TERM /6 AM THIS MORNING THROUGH 6 AM FRIDAY/...
Expect showers to move off the coast by early to mid morning as
the shortwave trough progresses downstream. This will allow for a
period of clearing, especially west of I-95 toward midday and
farther east during the afternoon hours. Given enough heating
occurs to destabilize the boundary layer, diurnally driven showers
or storms may develop across the area during the afternoon. The
favored convective areas will be across the Delmarva/far southern
NJ and across the higher terrain in northeastern PA and northwest
NJ.

There will be no more excessive heat concerns on Thursday. Highs
will generally be in the mid 80s while dewpoints are in the 65-70
degree range.

&&

.LONG TERM /FRIDAY THROUGH THURSDAY/...
On Friday a weak surface trough may across the area during the
day. However, there is not much moisture or any strong short
wave/vorticity impulses aloft expected, so we will keep the
weather dry for now. Although it wouldn't be surprising to see a
very isolated shower develop.

High pressure builds across northern New England Friday night
into Saturday. It will try to nose its way down the east coast
during the day Saturday. This will lead to a southeast-south flow
across much of the area. With an increase in moisture and possible
short wave/vorticity impulses, shower/thunderstorm chances develop
during the day Saturday. The old frontal boundary to our south may
begin lifting back toward our area as a warm front Saturday night
into Sunday. With additional short wave/vorticity impulses, there
will remain a chance of showers and thunderstorms overnight
Saturday into Sunday.

Warm and humid conditions will continue Friday, Saturday, and
Sunday. However, conditions are currently not expected to reach
the excessive levels they did this past weekend.

A cold front is expected to approach the area later in the day
Sunday and move into the area Sunday night, and progress eastward
through Monday morning. Rain chances being increasing late Sunday,
with the highest probabilities everywhere Sunday night. Even
though the front is expected to come through Sunday night, there
could still remain some instability, so thunderstorms will remain
a possibility with heavy rain and gusty winds possible.

The front will be offshore by Monday, and high pressure will
begin moving in Tuesday into Wednesday. Monday will be several
degrees cooler than the weekend, and Tuesday and Wednesday are
expected to be even cooler. Dewpoints will be markedly lower than
the weekend, especially Tuesday and Wednesday, so we will get a
break from the oppressive heat and humidity.

&&

.AVIATION /06Z THURSDAY THROUGH MONDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.

Conditions may lower into the MVFR category in rain during the
overnight hours. MVFR CIGS may continue to linger after the
showers end during the morning. Clouds should being to scatter
out from west to east with ceiling heights rising VFR levels. W to
NW flow around 10 kt are expected during the day Thursday.

OUTLOOK...
Thursday night...Generally VFR. A chance of showers or
thunderstorms in the early evening.

Friday-Friday night...VFR.

Saturday-Sunday...Generally VFR. Chance of showers and
thunderstorms, especially during the day, possibly leading to
lower conditions.

Sunday night...Showers and thunderstorms overnight with a cold
frontal passage. Lower conditions possible, especially with any
heavier rain.

Monday...Generally VFR. Rain expected to end during the morning
hours. Gusty NW winds 15-20 KT.

&&

.MARINE...
Winds and seas below SCA levels tonight and Thursday. A few
thunderstorms will remain over our southern coastal waters
overnight. Locally gusty winds and higher seas are expected.

Rip Currents....The risk for the formation of dangerous rip
currents will be low through Thursday.

OUTLOOK...
Thursday night-Monday...Sub-Small Craft Advisory conditions
expected across the waters through the period. Winds may
periodically gust 15- 20 knots, especially Monday behind a cold
frontal passage.

&&

.EQUIPMENT...
Due to equipment failure (A/C unit), KDIX WSR-88D radar is out of
service. Return to service is unknown at this time but technicians
are troubleshooting the issue. KDOX and TPHL radars will help fill
in the radar coverage gaps across southeast PA, southern NJ and
Delmarva. Luckily, these southern zones are where potentially
active weather is more likely to occur vs the northern third of
the CWA where the current radar outages result in less than ideal
surveillance coverage.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...None.

&&

Synopsis...Robertson
Near Term...Iovino
Short Term...Klein
Long Term...Robertson
Aviation...Klein/Robertson
Marine...Klein/Robertson
Equipment...Staff

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
235 PM EDT WED AUG 17 2016

NJZ001-007>010-012>015-018>020-026-027-PAZ054-055-060>062-071-
103>106-181845-
SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH-
EASTERN MONMOUTH-MERCER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-
COASTAL OCEAN-SOUTHEASTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-
NORTHAMPTON-PHILADELPHIA-WESTERN MONTGOMERY-EASTERN MONTGOMERY-
UPPER BUCKS-LOWER BUCKS-
235 PM EDT WED AUG 17 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW JERSEY...NORTHERN
NEW JERSEY...NORTHWEST NEW JERSEY...SOUTHERN NEW JERSEY...EAST
CENTRAL PENNSYLVANIA...NORTHEAST PENNSYLVANIA AND SOUTHEAST
PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

DEZ002>004-MDZ012-015-019-020-181845-
KENT-INLAND SUSSEX-DELAWARE BEACHES-KENT MD-QUEEN ANNES-TALBOT-
CAROLINE-
235 PM EDT WED AUG 17 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...SOUTHERN
DELAWARE AND NORTHEAST MARYLAND.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SHOWERS AND THUNDERSTORMS ARE EXPECTED TO MOVE INTO THE AREA
TOWARD SUNSET. A FEW OF THESE STORMS THIS EVENING MAY PRODUCE
LOCALLY DAMAGING WIND GUSTS. THESE STORMS WILL ALSO CONTAIN
TORRENTIAL DOWNPOURS. IF MULTIPLE THUNDERSTORMS TRACK OVER THE
SAME LOCATION, POOR DRAINAGE OR EVEN LOCALIZED FLASH FLOODING
COULD OCCUR LATE THIS EVENING AND OVERNIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING.

ANZ430-431-450>455-181845-
DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE-
DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE-
COASTAL WATERS FROM SANDY HOOK TO MANASQUAN INLET NJ OUT 20 NM-
COASTAL WATERS FROM MANASQUAN INLET TO LITTLE EGG INLET NJ OUT 20 NM-
COASTAL WATERS FROM LITTLE EGG INLET TO GREAT EGG INLET NJ OUT 20 NM-
COASTAL WATERS FROM GREAT EGG INLET TO CAPE MAY NJ OUT 20 NM-
COASTAL WATERS FROM CAPE MAY NJ TO CAPE HENLOPEN DE OUT 20 NM-
COASTAL WATERS FROM CAPE HENLOPEN TO FENWICK ISLAND DE OUT 20 NM-
235 PM EDT WED AUG 17 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND
DELAWARE BAY WATERS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

DEZ001-MDZ008-NJZ016-017-021>025-PAZ070-101-102-181845-
NEW CASTLE-CECIL-SALEM-GLOUCESTER-CUMBERLAND-ATLANTIC-CAPE MAY-
ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-DELAWARE-WESTERN CHESTER-
EASTERN CHESTER-
235 PM EDT WED AUG 17 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN DELAWARE...NORTHEAST
MARYLAND...SOUTHERN NEW JERSEY AND SOUTHEAST PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

NUMEROUS SHOWERS AND EMBEDDED THUNDERSTORMS ARE EXPECTED TO MOVE
INTO THE AREA AFTER SUNSET. SOME OF THESE STORMS WILL CONTAIN
TORRENTIAL DOWNPOURS. IF MULTIPLE THUNDERSTORMS TRACK OVER THE
SAME LOCATION, POOR DRAINAGE OR EVEN LOCALIZED FLASH FLOODING
COULD OCCUR LATE THIS EVENING AND OVERNIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

JRK

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1116 PM EDT WED AUG 17 2016

DEZ001-002-NJZ016>018-021>023-180400-
KENT-NEW CASTLE-SALEM-CAPE MAY-ATLANTIC-CUMBERLAND-GLOUCESTER-CAMDEN-
1116 PM EDT WED AUG 17 2016

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHWESTERN NEW
CASTLE...NORTHEASTERN KENT...SOUTH CENTRAL CAMDEN...SOUTHEASTERN
GLOUCESTER...NORTHWESTERN CAPE MAY...SOUTHWESTERN ATLANTIC...SALEM
AND CUMBERLAND COUNTIES...

AT 1116 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM NEAR HOPE CREEK TO NEAR VIOLA...AND MOVING NORTHEAST
AT 50 MPH.

WIND GUSTS UP TO 40 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THESE
STORMS.

LOCATIONS IMPACTED INCLUDE...
VINELAND...DOVER...MILLVILLE...BRIDGETON...MIDDLETOWN...CUMBERLAND...
GLASSBORO...SMYRNA...CLAYTON...SALEM...BUENA...LAUREL LAKE...
ALLOWAY...QUINTON...WOODBINE...ESTELL MANOR...NEWFIELD...ELMER...
CHESWOLD AND GREENWICH.

LAT...LON 3956 7557 3946 7559 3935 7549 3940 7543
      3948 7554 3951 7556 3949 7553 3954 7554
      3957 7551 3974 7490 3922 7470 3918 7494
      3921 7507 3918 7515 3924 7517 3930 7528
      3921 7540 3911 7540 3909 7551 3951 7573
TIME...MOT...LOC 0316Z 246DEG 43KT 3948 7550 3899 7550

MWG

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1146 PM EDT WED AUG 17 2016

DEZ002>004-NJZ023-024-180445-
DELAWARE BEACHES-KENT-INLAND SUSSEX-CAPE MAY-ATLANTIC COASTAL CAPE
MAY-
1146 PM EDT WED AUG 17 2016

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN KENT...
CENTRAL SUSSEX AND SOUTHWESTERN CAPE MAY COUNTIES...

AT 1146 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM NEAR MILFORD TO DAGSBORO...AND MOVING EAST AT 40 MPH.

WIND GUSTS UP TO 40 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THESE
STORMS.

LOCATIONS IMPACTED INCLUDE...
GEORGETOWN...CAPE MAY...MILFORD...NORTH WILDWOOD...MILLSBORO...
WILDWOOD CREST...LEWES...MILTON...AVALON...WEST CAPE MAY...
STONE HARBOR...DAGSBORO...MILLVILLE...ELLENDALE...BOWERS...
WOODSIDE...VIOLA...HENLOPEN ACRES...
CAPE MAY COURT HOUSE AND SCOTCH BONNET.

LAT...LON 3848 7540 3907 7559 3910 7540 3891 7531
      3878 7512 3917 7490 3918 7491 3921 7469
      3899 7479 3879 7508 3867 7507 3869 7508
      3864 7513 3866 7507 3861 7506 3859 7521
      3860 7506 3847 7505
TIME...MOT...LOC 0346Z 263DEG 35KT 3895 7547 3852 7526

MWG

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1200 AM EDT THU AUG 18 2016

NJZ016>018-020>023-025>027-180445-
OCEAN-SALEM-CAPE MAY-ATLANTIC-CUMBERLAND-COASTAL OCEAN-COASTAL
ATLANTIC-GLOUCESTER-CAMDEN-SOUTHEASTERN BURLINGTON-
1200 AM EDT THU AUG 18 2016

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN CAMDEN...
SOUTHEASTERN GLOUCESTER...NORTHWESTERN CAPE MAY...ATLANTIC...EAST
CENTRAL SALEM...SOUTH CENTRAL OCEAN...EASTERN CUMBERLAND AND
SOUTHEASTERN BURLINGTON COUNTIES...

AT 1200 AM EDT...A STRONG THUNDERSTORM WAS OVER CUMBERLAND...OR 7
MILES SOUTHEAST OF MILLVILLE...MOVING NORTHEAST AT 45 MPH.

WIND GUSTS UP TO 40 MPH ARE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
VINELAND...ATLANTIC CITY...MILLVILLE...CUMBERLAND...PLEASANTVILLE...
HAMMONTON...SOMERS POINT...BRIGANTINE...NORTHFIELD...ABSECON...
BUENA...EGG HARBOR CITY...LAUREL LAKE...TUCKERTON...WEYMOUTH...
ESTELL MANOR...NEWFIELD...PORT REPUBLIC...CORBIN CITY AND MALAGA.

LAT...LON 3941 7440 3948 7431 3946 7431 3939 7437
      3936 7449 3939 7452 3934 7453 3933 7467
      3933 7468 3931 7466 3922 7495 3955 7523
      3979 7447 3961 7430 3956 7433 3957 7428
      3952 7428 3953 7427 3955 7426 3954 7425
TIME...MOT...LOC 0400Z 246DEG 39KT 3935 7492

MWG