Alert archive / Pennsylvania / Winter Storm Watches in 2015

Winter Storm Watch 5, NWS Philadelphia/Mount Holly

February 20, 201510 counties in Pennsylvania; 6 counties in New Jersey

NWS Philadelphia/Mount Holly issued this winter storm watch at Feb 20, 2015, 3:30 PM EST for 10 counties in Pennsylvania; 6 counties in New Jersey. It took effect at Feb 21, 2015, 12:00 PM EST. It was in force for .

The area

The counties it named.

The facts

Issued
Feb 20, 2015, 3:30 PM EST (20:30 UTC)
In effect from
Feb 21, 2015, 12:00 PM EST
Expired
Feb 21, 2015, 4:37 AM EST
In force
Issued by
NWS Philadelphia/Mount Holly

Counties Hunterdon County, NJ, Mercer County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 93 km from the middle of the area, began a volume at 20:36 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.5 hours before the alert went out and 200 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2015-02-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2015-02-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1076 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

188 
WWUS41 KPHI 202030
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
330 PM EST FRI FEB 20 2015

...A QUICK MOVING WINTER STORM TO AFFECT THE AREA SATURDAY INTO
SUNDAY...

NJZ001-PAZ054-055-211000-
/O.CAN.KPHI.WC.Y.0009.000000T0000Z-150221T1200Z/
/O.NEW.KPHI.WS.A.0005.150221T1700Z-150222T1100Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
330 PM EST FRI FEB 20 2015

...WINTER STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...
...WIND CHILL ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
STORM WATCH, WHICH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT. THE WIND CHILL ADVISORY HAS BEEN CANCELLED.

* HAZARD TYPES...SNOW, WITH SOME SLEET AND FREEZING RAIN.

* SNOW ACCUMULATIONS...5 TO 7 INCHES POSSIBLE.

* ICE ACCUMULATIONS...AROUND A TENTH OF AN INCH POSSIBLE.

* TIMING...SNOW SHOULD OVERSPREAD THE AREA BY MIDDAY FROM
  SOUTHWEST TO NORTHEAST, AND IT COULD BECOME HEAVY AT TIMES. AS
  SOME WARMER AIR MOVES IN, THE SNOW SHOULD MIX WITH SLEET AND
  FREEZING RAIN BEFORE TAPERING OFF DURING SUNDAY.

* IMPACTS..HAZARDOUS TRAVEL POSSIBLE SATURDAY AFTERNOON INTO
  SUNDAY.

* VISIBILITIES...AS LOW AS ONE QUARTER MILE AT TIMES.

* TEMPERATURES...RISING INTO THE LOWER TO MID 20S SATURDAY, THEN
  RISING TO NEAR FREEZING SATURDAY NIGHT INTO SUNDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW, SLEET OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE
TO MONITOR THE LATEST FORECASTS.

&&

$$

DEZ001-MDZ008-012-NJZ012>014-016>020-026-027-211000-
/O.NEW.KPHI.WW.Y.0015.150221T1700Z-150222T0600Z/
NEW CASTLE-CECIL-KENT MD-MIDDLESEX-WESTERN MONMOUTH-
EASTERN MONMOUTH-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-
OCEAN-COASTAL OCEAN-SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF...WILMINGTON...ELKTON...CHESTERTOWN...
NEW BRUNSWICK...FREEHOLD...SANDY HOOK...PENNSVILLE...GLASSBORO...
CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON...
LONG BEACH ISLAND...WHARTON STATE FOREST
330 PM EST FRI FEB 20 2015

...WINTER WEATHER ADVISORY IN EFFECT FROM NOON SATURDAY TO 1 AM
EST SUNDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
WEATHER ADVISORY, WHICH IS IN EFFECT FROM NOON SATURDAY TO 1 AM
EST SUNDAY.

* HAZARD TYPES...SNOW, CHANGING TO SOME SLEET AND FREEZING RAIN
  THEN TO RAIN.

* SNOW ACCUMULATIONS...2 TO 4 INCHES.

* ICE ACCUMULATIONS...LESS THAN A TENTH OF AN INCH.

* TIMING...SNOW WILL OVERSPREAD THE AREA EARLY SATURDAY AFTERNOON
  FROM SOUTHWEST TO NORTHEAST, AND IT COULD BECOME HEAVY FOR A
  TIME. AS SOME WARMER AIR MOVES IN, THE SNOW SHOULD MIX WITH
  SLEET AND FREEZING RAIN THEN CHANGE TO RAIN SATURDAY NIGHT
  BEFORE TAPERING OFF DURING SUNDAY.

* IMPACTS..HAZARDOUS TRAVEL SATURDAY AFTERNOON INTO EARLY SUNDAY.

* VISIBILITIES...AS LOW AS ONE QUARTER MILE AT TIMES.

* TEMPERATURES...RISING INTO THE UPPER 20S SATURDAY AFTERNOON,
  THEN RISING THROUGH THE 30S SATURDAY NIGHT INTO SUNDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW, SLEET OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES, AND USE CAUTION WHILE
DRIVING.

&&

$$

DEZ002-MDZ015-019-020-NJZ021>023-211000-
/O.NEW.KPHI.WW.Y.0015.150221T1700Z-150222T0300Z/
KENT-QUEEN ANNES-TALBOT-CAROLINE-CUMBERLAND-ATLANTIC-CAPE MAY-
INCLUDING THE CITIES OF...DOVER...CENTREVILLE...EASTON...DENTON...
MILLVILLE...HAMMONTON...CAPE MAY COURT HOUSE
330 PM EST FRI FEB 20 2015

...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TO 10 PM EST
SATURDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
WEATHER ADVISORY, WHICH IS IN EFFECT FROM NOON TO 10 PM EST
SATURDAY.

* HAZARD TYPES...SNOW CHANGING TO SOME SLEET OR FREEZING RAIN THEN
  TO RAIN.

* SNOW ACCUMULATIONS...1 TO 2 INCHES.

* ICE ACCUMULATIONS...A LIGHT GLAZE.

* TIMING...SNOW WILL OVERSPREAD THE AREA EARLY SATURDAY AFTERNOON
  FROM SOUTHWEST TO NORTHEAST, AND IT COULD BECOME HEAVY FOR A
  BRIEF TIME. AS SOME WARMER AIR MOVES IN, THE SNOW SHOULD MIX
  WITH SLEET AND FREEZING RAIN THEN CHANGE TO RAIN SATURDAY
  EVENING BEFORE TAPERING OFF DURING SUNDAY.

* IMPACTS..HAZARDOUS TRAVEL SATURDAY AFTERNOON INTO EARLY SUNDAY.

* VISIBILITIES...AS LOW AS ONE QUARTER MILE AT TIMES.

* TEMPERATURES...RISING TO NEAR 30 SATURDAY AFTERNOON, THEN
  RISING THROUGH THE 30S SATURDAY NIGHT INTO SUNDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW, SLEET OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES, AND USE CAUTION WHILE
DRIVING.

&&

$$

NJZ007-PAZ060>062-211000-
/O.NEW.KPHI.WS.A.0005.150221T1700Z-150222T1100Z/
WARREN-BERKS-LEHIGH-NORTHAMPTON-
INCLUDING THE CITIES OF...WASHINGTON...READING...ALLENTOWN...
BETHLEHEM...EASTON
330 PM EST FRI FEB 20 2015

...WINTER STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
STORM WATCH, WHICH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT.

* HAZARD TYPES...SNOW, WITH SOME SLEET AND FREEZING RAIN.

* SNOW ACCUMULATIONS...4 TO 7 INCHES POSSIBLE.

* ICE ACCUMULATIONS...AROUND A TENTH OF AN INCH POSSIBLE.

* TIMING...SNOW SHOULD OVERSPREAD THE AREA BY MIDDAY FROM
  SOUTHWEST TO NORTHEAST, AND IT COULD BECOME HEAVY AT TIMES. AS
  SOME WARMER AIR MOVES IN, THE SNOW SHOULD MIX WITH SLEET AND
  FREEZING RAIN BEFORE TAPERING OFF DURING SUNDAY.

* IMPACTS..HAZARDOUS TRAVEL POSSIBLE SATURDAY AFTERNOON INTO
  SUNDAY.

* VISIBILITIES...AS LOW AS ONE QUARTER MILE AT TIMES.

* TEMPERATURES...RISING INTO THE LOWER TO MID 20S SATURDAY, THEN
  RISING TO AROUND FREEZING SATURDAY NIGHT INTO SUNDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW, SLEET OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE
TO MONITOR THE LATEST FORECASTS.

&&

$$

NJZ008>010-015-PAZ070-071-101>106-211000-
/O.NEW.KPHI.WS.A.0005.150221T1700Z-150222T1100Z/
MORRIS-HUNTERDON-SOMERSET-MERCER-DELAWARE-PHILADELPHIA-
WESTERN CHESTER-EASTERN CHESTER-WESTERN MONTGOMERY-
EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS-
INCLUDING THE CITIES OF...MORRISTOWN...FLEMINGTON...SOMERVILLE...
TRENTON...MEDIA...PHILADELPHIA...HONEY BROOK...OXFORD...
WEST CHESTER...KENNETT SQUARE...COLLEGEVILLE...POTTSTOWN...
NORRISTOWN...LANSDALE...CHALFONT...PERKASIE...MORRISVILLE...
DOYLESTOWN
330 PM EST FRI FEB 20 2015

...WINTER STORM WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
STORM WATCH, WHICH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT.

* HAZARD TYPES...SNOW, WITH SOME SLEET AND FREEZING RAIN.

* SNOW ACCUMULATIONS...4 TO 6 INCHES POSSIBLE.

* ICE ACCUMULATIONS...UP TO A TENTH OF AN INCH POSSIBLE.

* TIMING...SNOW SHOULD OVERSPREAD THE AREA BY MIDDAY FROM
  SOUTHWEST TO NORTHEAST, AND IT COULD BECOME HEAVY AT TIMES. AS
  SOME WARMER AIR MOVES IN, THE SNOW SHOULD MIX WITH SLEET AND
  FREEZING RAIN SATURDAY EVENING THEN CHANGE TO SOME RAIN BEFORE
  TAPERING OFF DURING SUNDAY.

* IMPACTS..HAZARDOUS TRAVEL POSSIBLE SATURDAY AFTERNOON INTO
  SUNDAY.

* VISIBILITIES...AS LOW AS ONE QUARTER MILE AT TIMES.

* TEMPERATURES...RISING INTO THE MID TO UPPER 20S SATURDAY, THEN
  RISING INTO THE LOWER TO MID 30S SATURDAY NIGHT INTO SUNDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW, SLEET OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE
TO MONITOR THE LATEST FORECASTS.

&&

$$

GORSE
2 follow-up statements
126 
WWUS41 KPHI 210216
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
916 PM EST FRI FEB 20 2015

...A QUICK MOVING WINTER STORM TO AFFECT THE AREA SATURDAY INTO
SUNDAY...

DEZ001-MDZ008-012-NJZ012>014-016>020-026-027-211230-
/O.CON.KPHI.WW.Y.0015.150221T1700Z-150222T0600Z/
NEW CASTLE-CECIL-KENT MD-MIDDLESEX-WESTERN MONMOUTH-
EASTERN MONMOUTH-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-
OCEAN-COASTAL OCEAN-SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF...WILMINGTON...ELKTON...CHESTERTOWN...
NEW BRUNSWICK...FREEHOLD...SANDY HOOK...PENNSVILLE...GLASSBORO...
CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON...
LONG BEACH ISLAND...WHARTON STATE FOREST
916 PM EST FRI FEB 20 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON SATURDAY
TO 1 AM EST SUNDAY...

* HAZARD TYPES...SNOW, CHANGING TO SOME SLEET AND FREEZING RAIN
  THEN TO RAIN.

* SNOW ACCUMULATIONS...2 TO 4 INCHES.

* ICE ACCUMULATIONS...LESS THAN A TENTH OF AN INCH.

* TIMING...SNOW WILL OVERSPREAD THE AREA EARLY SATURDAY AFTERNOON
  FROM SOUTHWEST TO NORTHEAST, AND IT COULD BECOME HEAVY FOR A
  TIME. AS SOME WARMER AIR MOVES IN, THE SNOW SHOULD MIX WITH
  SLEET AND FREEZING RAIN THEN CHANGE TO RAIN SATURDAY NIGHT
  BEFORE TAPERING OFF DURING SUNDAY.

* IMPACTS...HAZARDOUS TRAVEL SATURDAY AFTERNOON INTO EARLY
  SUNDAY.

* VISIBILITIES...AS LOW AS ONE QUARTER MILE AT TIMES.

* TEMPERATURES...RISING INTO THE UPPER 20S SATURDAY AFTERNOON, THEN
  GRADUALLY RISING THROUGH THE 30S SATURDAY NIGHT INTO SUNDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW, SLEET OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES, AND USE CAUTION WHILE
DRIVING.

&&

$$

DEZ002-MDZ015-019-020-NJZ021>023-211230-
/O.CON.KPHI.WW.Y.0015.150221T1700Z-150222T0300Z/
KENT-QUEEN ANNES-TALBOT-CAROLINE-CUMBERLAND-ATLANTIC-CAPE MAY-
INCLUDING THE CITIES OF...DOVER...CENTREVILLE...EASTON...DENTON...
MILLVILLE...HAMMONTON...CAPE MAY COURT HOUSE
916 PM EST FRI FEB 20 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TO 10 PM
EST SATURDAY...

* HAZARD TYPES...SNOW CHANGING TO SOME SLEET OR FREEZING RAIN 
  THEN TO RAIN.

* SNOW ACCUMULATIONS...1 TO 2 INCHES.

* ICE ACCUMULATIONS...A LIGHT GLAZE.

* TIMING...SNOW WILL OVERSPREAD THE AREA EARLY SATURDAY AFTERNOON
  FROM SOUTHWEST TO NORTHEAST, AND IT COULD BECOME HEAVY FOR A
  BRIEF TIME. AS SOME WARMER AIR MOVES IN, THE SNOW SHOULD MIX
  WITH SLEET AND FREEZING RAIN BRIEFLY THEN CHANGE TO RAIN
  SATURDAY EVENING BEFORE TAPERING OFF DURING SUNDAY.

* IMPACTS...HAZARDOUS TRAVEL SATURDAY AFTERNOON INTO EARLY
  SUNDAY.

* VISIBILITIES...AS LOW AS ONE QUARTER MILE AT TIMES.

* TEMPERATURES...RISING TO NEAR 30 SATURDAY AFTERNOON, THEN
  RISING THROUGH THE 30S SATURDAY NIGHT INTO SUNDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW, SLEET OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES, AND USE CAUTION WHILE
DRIVING.

&&

$$

NJZ001-007-PAZ054-055-060>062-211230-
/O.CON.KPHI.WS.A.0005.150221T1700Z-150222T1100Z/
SUSSEX-WARREN-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
INCLUDING THE CITIES OF...NEWTON...WASHINGTON...JIM THORPE...
STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON
916 PM EST FRI FEB 20 2015

...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH LATE SATURDAY NIGHT...

* HAZARD TYPES...SNOW, WITH SOME SLEET AND FREEZING RAIN.

* SNOW ACCUMULATIONS...4 TO 7 INCHES POSSIBLE.

* ICE ACCUMULATIONS...AROUND A TENTH OF AN INCH POSSIBLE.

* TIMING...SNOW SHOULD OVERSPREAD THE AREA BY MIDDAY FROM
  SOUTHWEST TO NORTHEAST, AND IT COULD BECOME HEAVY AT TIMES. AS
  SOME WARMER AIR MOVES IN, THE SNOW SHOULD MIX WITH SLEET AND
  FREEZING RAIN BEFORE TAPERING OFF DURING SUNDAY.

* IMPACTS...HAZARDOUS TRAVEL POSSIBLE SATURDAY AFTERNOON INTO
  SUNDAY.

* VISIBILITIES...AS LOW AS ONE QUARTER MILE AT TIMES.

* TEMPERATURES...RISING INTO THE LOWER TO MID 20S SATURDAY, THEN
  RISING TO AROUND FREEZING LATER SATURDAY NIGHT INTO SUNDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW, SLEET OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE
TO MONITOR THE LATEST FORECASTS.

&&

$$

NJZ008>010-015-PAZ070-071-101>106-211230-
/O.CON.KPHI.WS.A.0005.150221T1700Z-150222T1100Z/
MORRIS-HUNTERDON-SOMERSET-MERCER-DELAWARE-PHILADELPHIA-
WESTERN CHESTER-EASTERN CHESTER-WESTERN MONTGOMERY-
EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS-
INCLUDING THE CITIES OF...MORRISTOWN...FLEMINGTON...SOMERVILLE...
TRENTON...MEDIA...PHILADELPHIA...HONEY BROOK...OXFORD...
WEST CHESTER...KENNETT SQUARE...COLLEGEVILLE...POTTSTOWN...
NORRISTOWN...LANSDALE...CHALFONT...PERKASIE...MORRISVILLE...
DOYLESTOWN
916 PM EST FRI FEB 20 2015

...WINTER STORM WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON
THROUGH LATE SATURDAY NIGHT...

* HAZARD TYPES...SNOW, WITH SOME SLEET AND FREEZING RAIN.

* SNOW ACCUMULATIONS...4 TO 6 INCHES POSSIBLE, WITH THE HIGHEST
  AMOUNTS LOOKING TO BE TO THE NORTH AND WEST OF PHILADELPHIA.

* ICE ACCUMULATIONS...UP TO A TENTH OF AN INCH POSSIBLE.

* TIMING...SNOW SHOULD OVERSPREAD THE AREA BY MIDDAY FROM
  SOUTHWEST TO NORTHEAST, AND IT COULD BECOME HEAVY AT TIMES. AS
  SOME WARMER AIR MOVES IN, THE SNOW SHOULD MIX WITH SLEET AND
  FREEZING RAIN SATURDAY EVENING THEN CHANGE TO SOME RAIN BEFORE
  TAPERING OFF DURING SUNDAY.

* IMPACTS...HAZARDOUS TRAVEL POSSIBLE SATURDAY AFTERNOON INTO
  SUNDAY.

* VISIBILITIES...AS LOW AS ONE QUARTER MILE AT TIMES.

* TEMPERATURES...RISING INTO THE MID TO UPPER 20S SATURDAY, THEN
  GRADUALLY RISING INTO THE LOWER TO MID 30S SATURDAY NIGHT INTO
  SUNDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW, SLEET OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE
TO MONITOR THE LATEST FORECASTS.

&&

$$

GORSE
657 
WWUS41 KPHI 210937
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
437 AM EST SAT FEB 21 2015

...A BURST OF HEAVY SNOW IS EXPECTED OVER PORTIONS OF THE
NORTHERN MID ATLANTIC THIS AFTERNOON AND EVENING...

MDZ008-211745-
/O.UPG.KPHI.WW.Y.0015.150221T1700Z-150222T0600Z/
/O.NEW.KPHI.WS.W.0005.150221T1700Z-150222T1100Z/
CECIL-
INCLUDING THE CITY OF...ELKTON
437 AM EST SAT FEB 21 2015

...WINTER STORM WARNING IN EFFECT FROM NOON TODAY TO 6 AM EST
SUNDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 6 AM EST
SUNDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT.

* LOCATIONS...NORTHEAST MARYLAND.

* HAZARD TYPES...SNOW, WITH SOME SLEET AND FREEZING RAIN.

* SNOW ACCUMULATIONS...4 TO 6 INCHES.

* ICE ACCUMULATIONS...UP TO A TENTH OF AN INCH.

* TIMING...SNOW WILL OVERSPREAD THE AREA EARLY THIS AFTERNOON. THE
  SNOW WILL QUICKLY BECOME HEAVY THROUGH THE REMAINDER OF THE
  AFTERNOON WITH SNOWFALL RATES OF 1 TO 2 INCHES PER HOUR
  POSSIBLE. WARMER AIR WILL MOVE IN, ALLOWING THE SNOW TO MIX
  WITH SLEET AND FREEZING RAIN IN THE EVENING BEFORE CHANGING TO
  RAIN LATER IN THE EVENING AND OVERNIGHT.

* IMPACTS...ROADS WILL QUICKLY BECOME SNOW COVERED AND TRAVEL WILL
  BE VERY HAZARDOUS ESPECIALLY IN THE AFTERNOON AND EVENING. POOR
  VISIBILITIES AROUND ONE-QUARTER MILE ARE POSSIBLE AT TIMES.

* WINDS...SOUTH 5 TO 10 MPH.

* TEMPERATURES...MID 20S EARLY THIS AFTERNOON, THEN GRADUALLY
  RISING INTO THE MID 30S LATE TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. THIS WILL MAKE TRAVEL
VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

NJZ007-009-PAZ060>062-101>103-105-211745-
/O.UPG.KPHI.WS.A.0005.150221T1700Z-150222T1100Z/
/O.NEW.KPHI.WS.W.0005.150221T1700Z-150222T1100Z/
WARREN-HUNTERDON-BERKS-LEHIGH-NORTHAMPTON-WESTERN CHESTER-
EASTERN CHESTER-WESTERN MONTGOMERY-UPPER BUCKS-
INCLUDING THE CITIES OF...WASHINGTON...FLEMINGTON...READING...
ALLENTOWN...BETHLEHEM...EASTON...HONEY BROOK...OXFORD...
WEST CHESTER...KENNETT SQUARE...COLLEGEVILLE...POTTSTOWN...
CHALFONT...PERKASIE
437 AM EST SAT FEB 21 2015

...WINTER STORM WARNING IN EFFECT FROM NOON TODAY TO 6 AM EST
SUNDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 6 AM EST
SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT.

* LOCATIONS...PORTIONS OF EASTERN PENNSYLVANIA AND NORTHWEST NEW
  JERSEY.

* HAZARD TYPES...SNOW, WITH SOME SLEET AND FREEZING RAIN.

* SNOW ACCUMULATIONS...4 TO 7 INCHES.

* ICE ACCUMULATIONS...UP TO A TENTH OF AN INCH.

* TIMING...SNOW WILL OVERSPREAD THE AREA FROM SOUTHWEST TO
  NORTHEAST BETWEEN DURING THE EARLY AND MID AFTERNOON. THE SNOW
  WILL QUICKLY BECOME HEAVY WITH SNOWFALL RATES OF 1 TO 2 INCHES
  PER HOUR POSSIBLE AT TIMES THIS AFTERNOON AND EVENING. WARMER
  AIR WILL MOVE IN, ALLOWING THE SNOW TO MIX WITH SLEET AND
  FREEZING RAIN FROM SOUTHEAST TO NORTHWEST LATE THIS EVENING.
  PRECIPITATION MAY EVENTUALLY CHANGE TO RAIN, ESPECIALLY SOUTH OF
  I-80 OVERNIGHT BEFORE ENDING EARLY SUNDAY MORNING.

* IMPACTS...ROADS WILL QUICKLY BECOME SNOW COVERED AND TRAVEL WILL
  BE VERY HAZARDOUS ESPECIALLY IN THE AFTERNOON AND EVENING. POOR
  VISIBILITIES AROUND ONE-QUARTER MILE ARE POSSIBLE AT TIMES.

* WINDS...SOUTH 5 TO 10 MPH.

* TEMPERATURES...LOW 20S EARLY THIS AFTERNOON, THEN GRADUALLY
  RISING TO NEAR FREEZING OR JUST ABOVE FREEZING LATE TONIGHT AND
  SUNDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. THIS WILL MAKE TRAVEL
VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

NJZ001-008-PAZ054-055-211745-
/O.UPG.KPHI.WS.A.0005.150221T1700Z-150222T1100Z/
/O.EXB.KPHI.WW.Y.0015.150221T1700Z-150222T1100Z/
SUSSEX-MORRIS-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...MORRISTOWN...JIM THORPE...
STROUDSBURG
437 AM EST SAT FEB 21 2015

...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO 6 AM EST
SUNDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
WEATHER ADVISORY...WHICH IS IN EFFECT FROM NOON TODAY TO 6 AM EST
SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT.

* LOCATIONS...THE POCONOS AND PORTIONS OF NORTHWEST NEW JERSEY.

* HAZARD TYPES...SNOW, WITH SOME SLEET AND FREEZING RAIN.

* SNOW ACCUMULATIONS...4 TO 6 INCHES.

* ICE ACCUMULATIONS...LESS THAN ONE-TENTH OF AN INCH.

* TIMING...SNOW WILL OVERSPREAD THE AREA FROM SOUTHWEST TO
  NORTHEAST DURING THE EARLY AND MID AFTERNOON. THE SNOW WILL
  QUICKLY BECOME HEAVY WITH SNOWFALL RATES UP TO 1 INCH PER HOUR
  POSSIBLE AT TIMES LATE THIS AFTERNOON AND EVENING. WARMER AIR
  WILL MOVE IN, ALLOWING THE SNOW TO MIX WITH SLEET AND FREEZING
  RAIN IN SOME SPOTS LATE TONIGHT. THE WINTRY MIX ENDS EARLY
  SUNDAY MORNING.

* IMPACTS...ROADS WILL QUICKLY BECOME SNOW COVERED AND TRAVEL WILL
  BE HAZARDOUS ESPECIALLY IN THE LATE AFTERNOON AND EVENING. POOR
  VISIBILITIES UNDER ONE-HALF MILE ARE POSSIBLE AT TIMES.

* WINDS...SOUTH 5 TO 10 MPH.

* TEMPERATURES...LOW 20S THIS AFTERNOON, THEN GRADUALLY RISING TO
  THE UPPER 20S LATE TONIGHT AND SUNDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

NJZ010-015-PAZ070-071-104-106-211745-
/O.UPG.KPHI.WS.A.0005.150221T1700Z-150222T1100Z/
/O.EXA.KPHI.WW.Y.0015.150221T1700Z-150222T0600Z/
SOMERSET-MERCER-DELAWARE-PHILADELPHIA-EASTERN MONTGOMERY-
LOWER BUCKS-
INCLUDING THE CITIES OF...SOMERVILLE...TRENTON...MEDIA...
PHILADELPHIA...NORRISTOWN...LANSDALE...MORRISVILLE...DOYLESTOWN
437 AM EST SAT FEB 21 2015

...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO 1 AM EST
SUNDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
WEATHER ADVISORY...WHICH IS IN EFFECT FROM NOON TODAY TO 1 AM EST
SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT.

* LOCATIONS...INTERSTATE-95 CORRIDOR IN SOUTHEAST PENNSYLVANIA AND
  CENTRAL NEW JERSEY.

* HAZARD TYPES...SNOW, WITH SOME SLEET AND FREEZING RAIN.

* SNOW ACCUMULATIONS...2 TO 5 INCHES.

* ICE ACCUMULATIONS...UP TO A TENTH OF AN INCH.

* TIMING...SNOW WILL OVERSPREAD THE AREA DURING THE EARLY AND MID
  AFTERNOON. THE SNOW WILL QUICKLY BECOME HEAVY AT TIMES THIS
  AFTERNOON WITH SNOWFALL RATES OF 1 INCH PER HOUR POSSIBLE.
  WARMER AIR WILL MOVE IN, ALLOWING THE SNOW TO MIX WITH SLEET AND
  FREEZING RAIN IN THE EARLY EVENING BEFORE CHANGING TO RAIN LATE
  IN THE EVENING AND OVERNIGHT.

* IMPACTS...ROADS WILL QUICKLY BECOME SNOW COVERED AND TRAVEL WILL
  BE HAZARDOUS ESPECIALLY IN THE AFTERNOON AND EVENING. POOR
  VISIBILITIES UNDER ONE-HALF MILE ARE POSSIBLE AT TIMES.

* WINDS...SOUTH 5 TO 10 MPH.

* TEMPERATURES...MID 20S EARLY THIS AFTERNOON, THEN GRADUALLY
  RISING INTO THE MID 30S DURING THE EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

DEZ001-MDZ012-NJZ012>014-016>020-026-027-211745-
/O.CON.KPHI.WW.Y.0015.150221T1700Z-150222T0600Z/
NEW CASTLE-KENT MD-MIDDLESEX-WESTERN MONMOUTH-EASTERN MONMOUTH-
SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-
COASTAL OCEAN-SOUTHEASTERN BURLINGTON-
INCLUDING THE CITIES OF...WILMINGTON...CHESTERTOWN...
NEW BRUNSWICK...FREEHOLD...SANDY HOOK...PENNSVILLE...GLASSBORO...
CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON...
LONG BEACH ISLAND...WHARTON STATE FOREST
437 AM EST SAT FEB 21 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO
1 AM EST SUNDAY...

* HAZARD TYPES...SNOW, BRIEFLY CHANGING TO SOME SLEET AND
  FREEZING RAIN.

* SNOW ACCUMULATIONS...1 TO 3 INCHES.

* ICE ACCUMULATIONS...LESS THAN ONE-TENTH INCH.

* TIMING...SNOW WILL OVERSPREAD THE AREA DURING THE EARLY AND MID
  AFTERNOON. THE SNOW MAY BECOME HEAVY AT TIMES THIS AFTERNOON
  WITH SNOWFALL RATES OF 1 INCH PER HOUR POSSIBLE IN SOME SPOTS.
  WARMER AIR WILL MOVE IN, ALLOWING THE SNOW TO BRIEFLY MIX WITH
  SLEET AND FREEZING RAIN IN THE EARLY EVENING BEFORE QUICKLY
  CHANGING OVER TO RAIN.

* IMPACTS...ROADS WILL QUICKLY BECOME SNOW COVERED AND TRAVEL WILL
  BE HAZARDOUS ESPECIALLY IN THE AFTERNOON AND EARLY EVENING.
  POOR VISIBILITIES UNDER ONE-HALF MILE ARE POSSIBLE AT TIMES.

* WINDS...SOUTH 5 TO 10 MPH.

* TEMPERATURES...MID TO UPPER 20S THIS AFTERNOON, THEN GRADUALLY
  RISING INTO THE MID AND UPPER 30S THIS EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW... SLEET OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE
DRIVING.

&&

$$

DEZ002-MDZ015-019-020-NJZ021>023-211745-
/O.CON.KPHI.WW.Y.0015.150221T1700Z-150222T0300Z/
KENT-QUEEN ANNES-TALBOT-CAROLINE-CUMBERLAND-ATLANTIC-CAPE MAY-
INCLUDING THE CITIES OF...DOVER...CENTREVILLE...EASTON...DENTON...
MILLVILLE...HAMMONTON...CAPE MAY COURT HOUSE
437 AM EST SAT FEB 21 2015

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO
10 PM EST THIS EVENING...

* HAZARD TYPES...SNOW, CHANGING TO SOME SLEET AND FREEZING RAIN
  THEN TO RAIN.

* SNOW ACCUMULATIONS...AROUND AN INCH.

* ICE ACCUMULATIONS...A LIGHT GLAZE.

* TIMING...SNOW WILL OVERSPREAD THE AREA DURING THE EARLY AND MID
  AFTERNOON. WARMER AIR WILL QUICKLY MOVE IN, ALLOWING THE SNOW TO
  BRIEFLY MIX WITH SLEET AND FREEZING RAIN BY LATE AFTERNOON BEFORE
  QUICKLY CHANGING OVER TO RAIN IN THE EVENING.

* IMPACTS...ROADS MAY BECOME SNOW COVERED AND TRAVEL WILL BE
  HAZARDOUS ESPECIALLY IN THE AFTERNOON.

* WINDS...SOUTH 5 TO 10 MPH.

* TEMPERATURES...UPPER 20S EARLY THIS AFTERNOON, THEN GRADUALLY
  RISING INTO THE UPPER 30S THIS EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW... SLEET OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE
DRIVING.

&&

$$

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 20, 3:30 PM ESTWinter Weather AdvisoryPHIBucks, Carbon, Delaware, Monroe, Montgomery, Philadelphia39 hr
Feb 20, 10:08 AM ESTSmall Craft AdvisoryPHI9 hr
Feb 20, 10:08 AM ESTHeavy Freezing Spray AdvisoryPHI9 hr

Nearby

Winter Storm Watches in Pennsylvania, 2015Winter Storm Watches in New Jersey, 2015Every winter storm watch in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.