Special Weather Statement, NWS Philadelphia/Mount Holly

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
355 PM EDT THU MAR 17 2016

.SYNOPSIS...
AN AREA OF LOW PRESSURE WILL STRENGTHEN NEAR THE MAINE AND
CANADIAN BORDER TONIGHT AND MOVE INTO THE CANADIAN MARITIMES
FRIDAY. THIS LOW WILL PULL A COLD FRONT ACROSS OUR AREA FRIDAY
AFTERNOON INTO FRIDAY NIGHT. HIGH PRESSURE WILL MOVE TO OUR NORTH
THIS WEEKEND AS A COASTAL LOW DEVELOPS TO OUR SOUTH AND
STRENGTHENS OFF THE EAST COAST. THIS LOW WILL MOVE NORTHWARD JUST
OFFSHORE OF THE EAST COAST THROUGH SUNDAY, BRINGING WINTRY WEATHER
TO OUR AREA SATURDAY NIGHT THROUGH SUNDAY NIGHT. STRONG NORTHWEST
FLOW WILL BE IN PLACE MONDAY, BEFORE HIGH PRESSURE BUILDS ACROSS
THE EAST COAST TUESDAY. A WARM FRONT IS EXPECTED TO LIFT NORTH OF
THE AREA TUESDAY NIGHT.

&&

.NEAR TERM /UNTIL 6 AM FRIDAY MORNING/...
TEMPERATURES ARE RANGING FROM THE LOW 50S ACROSS THE POCONOS AND
NORTHWEST NEW JERSEY TO THE MID 60S ACROSS THE I95 CORRIDOR AND THE
UPPER 60S ACROSS SOUTHERN DELAWARE. AFTER THE INVERSION BROKE LATE
THIS MORNING, WINDS BEGAN TO MIX TO THE SURFACE. LAST HOUR, THE
REGION WAS SEEING GUSTS TO ABOUT 20-25 MPH, BUT IN THE SHOWERS,
WINDS WERE GUSTING TO AROUND 35 MPH.

THE SHOWERS WILL PERSIST INTO THE EARLY EVENING HOURS. THERE IS A
DIURNAL COMPONENT TO THE SHOWERS, SO AS THE SUN BEGINS TO SET, THEY
ARE EXPECTED TO DISSIPATE IN COVERAGE. THE HRRR DOES CARRY THE
REMAINING SHOWERS OFF THE COAST. WE KEPT A VERY LOW POP
REFERENCE THROUGH ABOUT 02Z.

FOR THE OVERNIGHT, SKIES WILL CLEAR AND TEMPS WILL DROP INTO THE MID
30S ACROSS THE POCONOS. UPPER 30S CAN BE EXPECTED ACROSS BERKS, THE
LEHIGH VALLEY, PARTS OF NORTHWEST NJ, AND THE PINES OF SOUTHERN
NEW JERSEY. ELSEWHERE, LOW 40S ARE EXPECTED.

WINDS WILL SUBSIDE WHEN THE SUN SETS. WEST WINDS LESS THAN 10 MPH
ARE EXPECTED.

&&

.SHORT TERM /6 AM FRIDAY MORNING THROUGH 6 PM FRIDAY/...
A COLD FRONT, COMING IN FROM THE NORTH, WILL TRACK THROUGH ABOUT
2/3RDS OF CWA THROUGH TOMORROW AFTERNOON. THE SOUTHERN MOST COUNTIES
WILL SEE THE FRONTAL PASSAGE EARLY TOMORROW EVENING.

IT APPEARS THE FRONT WILL BE ON THE DRY SIDE. THAT SAID, I DON'T
HAVE POPS ACROSS FAR SOUTHERN NEW JERSEY AND SOUTHERN PORTIONS OF
THE EASTERN SHORE.

WE COULD SEE ABOUT A 20 DEGREE SPREAD IN TEMPERATURES TOMORROW. I'VE
PAINTED HIGH IN THE MID 40S ACROSS THE POCONOS AND THE MID 60S
ACROSS SOUTHERN DELAWARE.

WINDS, LIKE TODAY, ARE GOING TO BE NOTICEABLE ONCE THE INVERSION
BREAKS. WEST TO NORTHWEST GUSTS IN THE 25 TO 35 MPH RANGE LOOKS LIKE
A GOOD BET.

WE ARE NOT EXPECTING A REPEAT OF THIS MORNING WITH THE FOG.

&&

.LONG TERM /FRIDAY NIGHT THROUGH THURSDAY/...
THE MAIN CONCERN WITH THE LONG TERM FORECAST IS THE COASTAL STORM
EXPECTED THIS WEEKEND. THERE IS CONSIDERABLE UNCERTAINTY WITH THE
TIMING OF THE STORM WITH SEVERAL SOLUTIONS. THE GFS IS THE
FASTEST, WHILE THE ECMWF IS THE SLOWEST. THE NAM AND CANADIAN ARE
GENERALLY IN BETWEEN THE OTHER TWO. THE GFS IS INDICATING THE
PRECIPITATION COULD BEGIN AS EARLY AS SATURDAY AFTERNOON, WHILE
THE ECMWF DOESN'T BRING MUCH IN UNTIL AFTER MIDNIGHT. THE CANADIAN
AND NAM GENERALLY BRING PRECIPITATION IN DURING THE
EVENING/OVERNIGHT. SO FOR NOW, WE'VE INCREASE POPS SATURDAY NIGHT,
WITH HIGHEST PROBABILITIES ACROSS THE SOUTH. SUNDAY HAS THE
HIGHEST POPS EVERYWHERE AS THIS WILL THE MOST LIKELY PERIOD FOR
PRECIPITATION BASED ON CONSENSUS WITH ALL OF THE GUIDANCE. AS WE
PROGRESS INTO SUNDAY NIGHT, THE ECMWF IS THE SLOWEST CLEARING THE
PRECIPITATION, ALTHOUGH ALL GUIDANCE DOES INDICATE SOME POTENTIAL
FOR AT LEAST THE EVENING HOURS, SO WE'LL SLOWLY LOWER POPS THROUGH
THE NIGHT SUNDAY.

THE NEXT QUESTION BECOMES WHAT THE P-TYPES WILL BE. AS ALWAYS,
BUT EVEN MORE SO IN THIS TRANSITION PERIOD BETWEEN SEASONS, THE
THERMAL PROFILE WILL HAVE A SIGNIFICANT EFFECT ON WHERE
PRECIPITATION FALLS AS SNOW OR RAIN, OR A WINTRY MIX OF
RAIN/SLEET/SNOW. PRETTY MUCH ALL GUIDANCE INDICATES AREAS
BASICALLY RIGHT ALONG, AND NORTH AND WEST OF THE I-95 CORRIDOR
WILL LIKELY REMAIN ALL SNOW DURING THE ENTIRE EVENT. HOWEVER, WITH
WARM GROUND AND MARGINAL TEMPERATURES, SNOW AMOUNTS COULD POSSIBLY
LIMITED. THIS DOES NOT MEAN WE WON'T GET AN ACCUMULATION. AREAS
SOUTH OF THE I-95 CORRIDOR COULD BEGIN AS SNOW, THEN MIX WITH OR
CHANGE OVER TO RAIN AT TIMES, THEN POSSIBLY CHANGE BACK TO SNOW
BEFORE IT ENDS. FOR AREAS WHERE THE PRECIPITATION REMAINS ALL
SNOW, WE COULD SEE AT LEAST 2-4 INCHES OF SNOW, WHILE AREAS THAT
CHANGE OVER TO RAIN MAY NOT SEE MUCH AT ALL. AREAS IN BETWEEN
COULD SEE MAYBE 1-2 INCHES, WITH LESS FOR THOSE WHO MIX. AS
USUAL, THIS WILL LIKELY CHANGE OVER THE NEXT FEW FORECAST CYCLES,
SO CONTINUE TO MONITOR THE FORECAST FOR FUTURE UPDATES.

THE LOW WILL BE LIFTING INTO EASTERN CANADA MONDAY, WHICH WILL
KEEP OUR AREA UNDER STRONG NORTHWEST FLOW. IT IS POSSIBLE THAT
SOME SHOWERS COULD AFFECT OUR AREA WITHIN THE NORTHWEST FLOW,
ESPECIALLY AS WE'LL BE UNDER THE COOL POOL OF THE TROUGH ALOFT.
TEMPERATURES ACROSS THE NORTH COULD REMAIN COLD ENOUGH FOR SOME
SNOW SHOWERS TO OCCUR DURING THE DAY AS WELL. WINDS MONDAY COULD
GUST 25 TO 35 MPH AT TIMES ACROSS THE AREA.

HIGH PRESSURE WILL BUILD ACROSS THE EAST COAST MONDAY NIGHT INTO
TUESDAY, WHICH WILL KEEP FAIR WEATHER DURING THIS PERIOD.

A WARM FRONT IS EXPECTED TO LIFT NORTHWARD ACROSS THE AREA
TUESDAY NIGHT AS AN AREA OF LOW PRESSURE MOVES EASTWARD NORTH OF
OUR AREA AND INTO NEW ENGLAND. THE FRONT MAY POSSIBLY STALL OUT
TO THE NORTH OF OUR AREA AS A COUPLE OF WAVES OF LOW PRESSURE
DEVELOP ALONG THE BOUNDARY DRAPED BACK THROUGH THE MIDWEST.
MEANWHILE, NEARLY ZONAL FLOW ALOFT IS FORECAST TO REMAIN IN PLACE
THROUGH THURSDAY. SEVERAL SHORT WAVES/VORTICITY IMPULSES MAY
TRAVERSE THE AREA WITHIN THE ZONAL FLOW, WHICH COULD HELP TRIGGER
SCATTERED SHOWERS ACROSS MAINLY THE NORTHERN PORTIONS OF THE
AREA.

&&

.AVIATION /20Z THURSDAY THROUGH TUESDAY/...
THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY AND SURROUNDING AREAS.

TONIGHT...VFR, EXCEPT MVFR IN HEAVIER SHOWERS/THUNDERSTORMS EARLY
THIS EVENING. WEST WINDS GUSTING IN THE 25 TO 35 KT RANGE WILL
SETTLE DOWN TO LESS THAN 10 KT OVERNIGHT.

FRIDAY...SIMILAR TO THURSDAY, BUT WITHOUT THE MORNING FOG. VFR,
EXCEPT MVFR IN SHOWERS. A COLD FRONT WILL BE MOVING ACROSS THE
TERMINALS IN THE AFTERNOON. GUSTY WEST TO NORTHWEST WINDS TOPPING
OUT IN THE 25 TO 35 KT RANGE.

OUTLOOK...

FRIDAY NIGHT...GENERALLY VFR, PATCHY FOG POSSIBLE.

SATURDAY...VFR, THOUGH CLOUDS LOWERING THROUGH THE DAY. LOWERING
CONDITIONS LIKELY NOT UNTIL SATURDAY NIGHT.

SATURDAY NIGHT-SUNDAY NIGHT...MVFR EARLY, LIKELY LOWERING TO IFR
WITH SNOW AND RAIN MOVING INTO THE AREA. WINDS COULD BE GUSTY
20-25 KNOTS.

MONDAY...GENERALLY VFR, ISOLATED SHOWERS POSSIBLE WHICH MAY
BRIEFLY LOWER CONDITIONS. STRONG WIND GUSTS 25-35 KNOTS POSSIBLE.

MONDAY NIGHT-TUESDAY...VFR.

&&

.MARINE...
REST OF THIS AFTERNOON...THE SMALL CRAFT ADVISORY HAS BEEN
CANCELLED. WINDS ARE SIMPLY NOT MIXING DOWN OUTSIDE OF THE
ISOLATED PRECIPITATION. THAT SAID, EXPECT WINDS MAINLY IN THE 10
TO 15 KT RANGE. IN THE ISOLATED SHOWERS, WINDS COULD GUST FOR A
BRIEF TIME UP TO 30 KT. SINCE ANY WIND GUST IN EXCESS OF 25 KT
WILL BE CONVECTIVELY DRIVEN, WE'LL COVER WITH THE MWW OR MWS.

TONIGHT...THE WEST WINDS WILL SUBSIDE. NO HEADLINES EXPECTED.

FRIDAY...LOOKS SIMILAR TO TODAY. WE'LL SEE ANOTHER DAY WITH WINDS IN
THE 25 TO 40 KT JUST OFF THE SURFACE, BUT WITH THE INVERSION IN
PLACE, WE'RE NOT EXPECTING THE WINDS TO MIX DOWN ENTIRELY. OUR VERY
NEAR SHORE WATERS AND BAYS WERE THE CONCERN TODAY, THE LAND/WATER
INTERFACE. THE SAME GOES FOR TOMORROW.

OUTLOOK...

FRIDAY NIGHT-SATURDAY...SUB-SMALL CRAFT ADVISORY LEVELS EXPECTED.
INCREASING WINDS AHEAD OF COASTAL STORM.

SATURDAY NIGHT-MONDAY...COASTAL STORM EXPECTED TO BE AFFECTING
THE AREA. CONDITIONS WILL REACH AT LEAST SMALL CRAFT ADVISORY
LEVELS, AND COULD POSSIBLY REACH GALE FORCE, ESPECIALLY SATURDAY
NIGHT/SUNDAY MORNING AHEAD OF THE STORM, AND MONDAY BEHIND THE
STORM.

MONDAY NIGHT-TUESDAY...CONDITIONS LOWERING TO SMALL CRAFT
ADVISORY LEVELS.

&&

.FIRE WEATHER...
FRIDAY AFTERNOON IS EXPECTED TO BE VERY GUSTY ALONG WITH THE
POTENTIAL LOW RH VALUES. WINDS ARE EXPECTED TO GUST 25-35 MPH BOTH
AFTERNOONS, AND RH VALUES COULD LOWER INTO THE UPPER 20S FOR SOME
AREAS. AFTER DISCUSSING WITH STATE PARTNERS, IT WAS DETERMINED THAT
THE FUELS HAVE NOT DRIED TO CRITICAL LEVELS. SO WE WILL NOT ISSUE
ANY ENHANCED STATEMENTS AT THIS TIME, BUT WILL CONTINUE TO
COORDINATE OVER THE NEXT COUPLE OF DAYS IF THERE ARE ANY CHANGES.

&&

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

&&

SYNOPSIS...ROBERTSON
NEAR TERM...KRUZDLO
SHORT TERM...KRUZDLO
LONG TERM...ROBERTSON
AVIATION...KRUZDLO/ROBERTSON
MARINE...KRUZDLO/ROBERTSON
FIRE WEATHER...

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
415 PM EDT THU MAR 17 2016

DEZ001-MDZ008-012-NJZ001-007>010-012>020-026-PAZ054-055-060>062-070-
071-101>106-182015-
NEW CASTLE-CECIL-KENT MD-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-
MIDDLESEX-WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-
CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-COASTAL OCEAN-CARBON-MONROE-
BERKS-LEHIGH-NORTHAMPTON-DELAWARE-PHILADELPHIA-WESTERN CHESTER-
EASTERN CHESTER-WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-
LOWER BUCKS-
415 PM EDT THU MAR 17 2016

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

.DAY ONE...TONIGHT.

ISOLATED THUNDERSTORMS THIS AFTERNOON AND EARLY EVENING MAY
PRODUCESMALL HAIL AND WIND GUSTS TO NEAR 45 MPH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

A STRONG COASTAL STORM COULD BRING SNOW ACCUMULATIONS TO THE
AREA SATURDAY NIGHT INTO SUNDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

DEZ002>004-MDZ015-019-020-NJZ021>025-027-182015-
KENT-INLAND SUSSEX-DELAWARE BEACHES-QUEEN ANNES-TALBOT-CAROLINE-
CUMBERLAND-ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY-
COASTAL ATLANTIC-SOUTHEASTERN BURLINGTON-
415 PM EDT THU MAR 17 2016

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

.DAY ONE...TONIGHT.

ISOLATED THUNDERSTORMS COULD PRODUCE SMALL HAIL AND A WIND GUST
TONEAR 45 MPH THIS AFTERNOON AND EARLY EVENING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

A STRONG COASTAL STORM COULD BRING A MIX OF RAIN AND SNOW SATURDAY
NIGHT INTO SUNDAY NIGHT. A LIGHT ACCUMULATION IS POSSBILE FOR
SOME AREAS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

ANZ430-431-450>455-182015-
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-
415 PM EDT THU MAR 17 2016

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

.DAY ONE...TONIGHT.

THERE IS A CHANCE FOR A STRONG THUNDERSTORM THIS AFTERNOON AND
EARLY EVENING THAT COULD PRODUCE SMALL HAIL AND WESTERLY WIND GUST
TO 35 KT. THE PRIMARY THREAT REGION APPEARS TO BE THE NEW JERSEY
COAST.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

A STRONG COASTAL STORM COULD BRING GALES SATURDAY NIGHT INTO
MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
409 PM EDT THU MAR 17 2016

NJZ018>020-022-025>027-172045-
OCEAN-ATLANTIC-COASTAL OCEAN-COASTAL ATLANTIC-CAMDEN-SOUTHEASTERN
BURLINGTON-NORTHWESTERN BURLINGTON-
409 PM EDT THU MAR 17 2016

...AN AREA OF SHOWERS WITH STRONG GUSTY WINDS WILL AFFECT EAST
CENTRAL CAMDEN...CENTRAL ATLANTIC...CENTRAL OCEAN AND SOUTHEASTERN
BURLINGTON COUNTIES...

AT 406 PM EDT...AN AREA OF SHOWERS WITH STRONG GUSTY WINDS WAS NEAR
CHATSWORTH...OR 24 MILES SOUTHWEST OF TOMS RIVER...MOVING EAST AT 45
MPH.

WIND GUSTS UP TO 50 MPH ARE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
TOMS RIVER...BARNEGAT...HAMMONTON...BEACHWOOD...BRIGANTINE...ABSECON...
TABERNACLE...SHAMONG...EGG HARBOR CITY...TUCKERTON...PRESIDENTIAL LAKES
ESTATES...WEYMOUTH...PEMBERTON...SURF CITY...PORT REPUBLIC...HOLIDAY CITY
SOUTH...CHATSWORTH...NEW GRETNA...PENN STATE FOREST AND WADING RIVER.

EXPECT A QUICK INCREASE IN WINDS AS THESE SHOWERS MOVE THROUGH THE
REGION.

LAT...LON 3980 7418 3974 7420 3976 7411 3964 7417
      3966 7422 3962 7419 3963 7426 3959 7423
      3961 7420 3958 7422 3958 7434 3955 7427
      3940 7436 3946 7443 3942 7445 3949 7486
      3997 7472 3999 7411 3981 7417 3978 7410
TIME...MOT...LOC 2006Z 287DEG 40KT 3980 7461

SZATKOWSKI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
418 PM EDT THU MAR 17 2016

NJZ009-010-012-015-019-PAZ103>106-172115-
SOMERSET-HUNTERDON-MERCER-MIDDLESEX-NORTHWESTERN BURLINGTON-WESTERN
MONTGOMERY-EASTERN MONTGOMERY-LOWER BUCKS-UPPER BUCKS-
418 PM EDT THU MAR 17 2016

...A SHOWER WITH STRONG GUSTY WINDS WILL AFFECT MERCER...SOUTH
CENTRAL HUNTERDON... SOUTHWESTERN SOMERSET...SOUTHWESTERN
MIDDLESEX...NORTH CENTRAL BURLINGTON...BUCKS AND CENTRAL MONTGOMERY
COUNTIES...

AT 416 PM EDT...A SHOWER WITH STRONG GUSTY WINDS WAS OVER
SOUDERTON...OR 20 MILES SOUTH OF ALLENTOWN...MOVING EAST AT 45 MPH.

WIND GUSTS UP TO 45 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS
SHOWER.

LOCATIONS IMPACTED INCLUDE...
TRENTON...EWING...LANSDALE...PRINCETON...FLORENCE...BRISTOL...QUAKERTOWN...
PERKASIE...DOYLESTOWN...BYRAM...HATBORO...SOUDERTON...BEDMINSTER...
CHALFONT...HATFIELD...PENNINGTON...NEW HOPE...YARDLEY...NEWTOWN AND
DUBLIN.

THIS SHOWER WITH STRONG GUSTY WINDS MAY INTENSIFY...SO BE CERTAIN TO
MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV
OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE
NATIONAL WEATHER SERVICE.

LAT...LON 4024 7548 4047 7537 4035 7454 4010 7481
TIME...MOT...LOC 2016Z 286DEG 39KT 4031 7534

SZATKOWSKI