Alert archive / Pennsylvania / Winter Storm Watches in 2015

Winter Storm Watch 3, NWS Philadelphia/Mount Holly

February 7, 2015Carbon County, Monroe County, Pennsylvania; Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this winter storm watch at Feb 7, 2015, 3:47 AM EST for Carbon County, Monroe County, Pennsylvania; Sussex County, New Jersey. It took effect at Feb 8, 2015, 6:00 PM EST. It was in force for .

The area

The counties it named.

The facts

Issued
Feb 7, 2015, 3:47 AM EST (08:47 UTC)
In effect from
Feb 8, 2015, 6:00 PM EST
Expired
Feb 8, 2015, 4:42 AM EST
In force
Issued by
NWS Philadelphia/Mount Holly

Counties Sussex County, NJ, Carbon County, PA, Monroe County, PA

The radar

The Philadelphia radar (KDIX), 140 km from the middle of the area, began a volume at 08:45 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 00:00Z, 8.8 hours before the alert went out and 201 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 00:00Z on 2015-02-07Temperature 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 00:00Z on 2015-02-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
1371 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
195 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.

346 
WWUS41 KPHI 070847
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
347 AM EST SAT FEB 7 2015

...SIGNIFICANT WINTER WEATHER POSSIBLE SUNDAY NIGHT INTO MONDAY
NIGHT...

.A LOW PRESSURE SYSTEM WILL TRACK ALONG A FRONTAL BOUNDARY LATE
SUNDAY AND MONDAY. AS THE FRONT SETTLES SOUTHWARD, COLDER AIR WILL
MOVE IN FROM THE NORTHEAST. INITIALLY THOUGH WARMER AIR WILL ALLOW
FOR MIXED PRECIPITATION, WHICH SHOULD THEN CHANGE TO SNOW THROUGH
MONDAY. A TIGHT GRADIENT IN THE SNOW AMOUNTS MAY OCCUR NEAR AND
NORTH OF THE POCONOS, THEREFORE LESS CERTAINTY EXISTS WITH THE
ACTUAL AMOUNTS. SNOW AND ICE ARE ANTICIPATED AND THE COMBINATION
OF THESE COULD BE SIGNIFICANT, THEREFORE A WINTER STORM WATCH HAS
BEEN ISSUED.

NJZ001-PAZ054-055-072100-
/O.NEW.KPHI.WS.A.0003.150208T2300Z-150210T0600Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
347 AM EST SAT FEB 7 2015

...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH LATE
MONDAY NIGHT...

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

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

* ACCUMULATIONS...4 TO 6 INCHES OF SNOW AND SLEET, WITH UP TO ONE
  QUARTER INCH OF ICE POSSIBLE. A TIGHT GRADIENT IN SNOWFALL
  HOWEVER MAY OCCUR NEARBY AND ANY SHIFT IN THE STORM TRACK WILL
  AFFECT THE AMOUNTS IN THE WATCH AREA.

* TIMING...RAIN, FREEZING RAIN AND SLEET SHOULD TRANSITION TO SNOW
  AND SLEET SUNDAY NIGHT INTO MONDAY MORNING. IT APPEARS THAT
  MOSTLY SNOW WILL THEN OCCUR DURING MONDAY BEFORE TAPERING OFF
  MONDAY NIGHT.

* IMPACTS...HAZARDOUS CONDITIONS ARE POSSIBLE DUE TO SNOW AND ICE.
  THIS WILL HAVE AN IMPACT ON THE MONDAY MORNING AND EVENING
  COMMUTES.

* TEMPERATURES...IN THE LOWER 30S SUNDAY EVENING, THEN DROPPING
  INTO THE 20S MONDAY AND MONDAY NIGHT.

* VISIBILITIES...AS LOW AS ONE HALF MILE AT TIMES POSSIBLE.

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
3 follow-up statements
757 
WWUS41 KPHI 072052
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
352 PM EST SAT FEB 7 2015

...SIGNIFICANT WINTER WEATHER POSSIBLE SUNDAY NIGHT INTO MONDAY
NIGHT...

.A LOW PRESSURE SYSTEM WILL TRACK ALONG A FRONTAL BOUNDARY SUNDAY
NIGHT AND MONDAY. WARMER AIR INITIALLY WILL YIELD A WINTRY MIX OF
PRECIPITATION SUNDAY NIGHT. THERE IS STILL SOME UNCERTAINTY
REGARDING WHEN THE TRANSITION FROM A WINTRY MIX TO ALL SNOW
OCCURS. A QUICKER SOUTHWARD PROGRESSION OF THE COLD AIR WILL
YIELD HIGHER SNOWFALL AMOUNTS AND LESS ICING WITH A CHANGEOVER TO
SNOW OCCURRING EARLY ON MONDAY. CONVERSELY, A LATER ARRIVAL OF THE
COLD AIR LATE WILL YIELD LESS SNOWFALL AND MORE ICING WITH A
CHANGEOVER TO SNOW LATE IN THE DAY MONDAY. REGARDLESS, THE IMPACT
FROM A COMBINATION OF SNOW AND ICE COULD POTENTIALLY BE SIGNIFICANT.

NJZ001-PAZ054-055-080500-
/O.CON.KPHI.WS.A.0003.150208T2300Z-150210T0600Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
352 PM EST SAT FEB 7 2015

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY EVENING
THROUGH LATE MONDAY NIGHT...

* HAZARD TYPES...SNOW... SLEET AND FREEZING RAIN.

* SNOW ACCUMULATIONS...4 TO 6 INCHES OF SNOW AND SLEET IS POSSIBLE.

* ICE ACCUMULATIONS...UP TO ONE-QUARTER INCH OF ICE POSSIBLE. 

* TIMING...RAIN... FREEZING RAIN AND SLEET SHOULD TRANSITION TO
  SNOW AND SLEET EITHER SUNDAY NIGHT OR MONDAY MORNING. THERE IS
  STILL SOME UNCERTAINTY REGARDING WHEN THE TRANSITION FROM A
  WINTRY MIX TO ALL SNOW OCCURS, BUT IT WILL MOST LIKELY OCCUR
  SOMETIME ON MONDAY. THE SNOW IS EXPECTED TO TAPER OFF MONDAY
  NIGHT.

* IMPACTS...A POTENTIAL FOR HAZARDOUS TRAVEL DUE TO SNOW AND ICE
  THAT INCLUDES PORTIONS I-80. THIS WILL HAVE AN IMPACT ON THE
  MONDAY MORNING AND EVENING COMMUTES.

* TEMPERATURES...IN THE LOWER 30S SUNDAY EVENING...THEN DROPPING
  INTO THE 20S MONDAY AND MONDAY NIGHT.

* VISIBILITIES...AS LOW AS ONE HALF MILE AT TIMES POSSIBLE.

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.

&&

$$
JRK
266 
WWUS41 KPHI 080305
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1005 PM EST SAT FEB 7 2015

...SIGNIFICANT WINTER WEATHER POSSIBLE SUNDAY NIGHT INTO MONDAY
NIGHT...

.A LOW PRESSURE SYSTEM WILL TRACK ALONG A FRONTAL BOUNDARY SUNDAY
NIGHT AND MONDAY. WARMER AIR INITIALLY WILL YIELD A WINTRY MIX OF
PRECIPITATION SUNDAY NIGHT. THERE IS STILL SOME UNCERTAINTY
REGARDING WHEN THE TRANSITION FROM A WINTRY MIX TO ALL SNOW
OCCURS. A QUICKER SOUTHWARD PROGRESSION OF THE COLD AIR WILL
YIELD HIGHER SNOWFALL AMOUNTS AND LESS ICING WITH A CHANGEOVER TO
SNOW OCCURRING EARLY ON MONDAY. CONVERSELY... A LATER ARRIVAL OF
THE COLD AIR LATE WILL YIELD LESS SNOWFALL AND MORE ICING WITH A
CHANGEOVER TO SNOW LATE IN THE DAY MONDAY. REGARDLESS... THE
IMPACT FROM A COMBINATION OF SNOW AND ICE COULD POTENTIALLY BE
SIGNIFICANT.

NJZ001-PAZ054-055-081115-
/O.CON.KPHI.WS.A.0003.150208T2300Z-150210T0600Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
1005 PM EST SAT FEB 7 2015

...WINTER STORM WATCH REMAINS IN EFFECT FROM SUNDAY EVENING
THROUGH LATE MONDAY NIGHT...

* HAZARD TYPES...SNOW... SLEET AND FREEZING RAIN.

* SNOW ACCUMULATIONS...4 TO 6 INCHES OF SNOW AND SLEET IS 
  POSSIBLE.

* ICE ACCUMULATIONS...UP TO ONE-QUARTER INCH OF ICE POSSIBLE.

* TIMING...RAIN...FREEZING RAIN AND SLEET SHOULD TRANSITION TO
  SNOW AND SLEET EITHER SUNDAY NIGHT OR MONDAY MORNING. THERE IS
  STILL SOME UNCERTAINTY REGARDING WHEN THE TRANSITION FROM A
  WINTRY MIX TO ALL SNOW OCCURS...BUT IT WILL MOST LIKELY OCCUR
  SOMETIME ON MONDAY. THE SNOW IS EXPECTED TO TAPER OFF MONDAY
  NIGHT.

* IMPACTS...A POTENTIAL FOR HAZARDOUS TRAVEL DUE TO SNOW AND ICE 
  THAT INCLUDES PORTIONS I-80. THIS WILL HAVE AN IMPACT ON THE 
  MONDAY MORNING AND EVENING COMMUTES.

* TEMPERATURES...IN THE LOWER 30S SUNDAY EVENING...THEN DROPPING 
  INTO THE 20S MONDAY AND MONDAY NIGHT.

* VISIBILITIES...AS LOW AS ONE HALF MILE AT TIMES POSSIBLE.

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.

&&

$$
753 
WWUS41 KPHI 080942
WSWPHI

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
442 AM EST SUN FEB 8 2015

...A WINTRY MIX OF PRECIPITATION IS EXPECTED FOR TONIGHT INTO
MONDAY NIGHT...

.LOW PRESSURE CENTERED NEAR CHICAGO EARLY THIS MORNING WILL MOVE
EAST SOUTHEASTWARD AND IT SHOULD PASS OFF THE MIDDLE ATLANTIC
COAST ON MONDAY NIGHT. THE SYSTEM WILL BRING A WINTRY MIX OF
PRECIPITATION TO OUR REGION FOR TONIGHT, MONDAY AND MONDAY NIGHT.

NJZ001-PAZ054-055-082100-
/O.UPG.KPHI.WS.A.0003.150208T2300Z-150210T0600Z/
/O.NEW.KPHI.WW.Y.0012.150208T2300Z-150210T1100Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
442 AM EST SUN FEB 8 2015

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6
AM EST TUESDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
WEATHER ADVISORY FOR FREEZING RAIN, SLEET AND SNOW. IT IS IN
EFFECT FROM 600 PM THIS EVENING UNTIL 600 AM ON TUESDAY. THE
WINTER STORM WATCH IS NO LONGER IN EFFECT.

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

* SNOW ACCUMULATIONS...THERE IS THE POTENTIAL FOR 3 TO 7 INCHES.

* ICE ACCUMULATIONS...THERE IS THE POTENTIAL FOR ONE TENTH TO ONE
  QUARTER INCH.

* TIMING...FREEZING RAIN IS FORECAST TO MOVE INTO THE REGION THIS
  EVENING. THE PRECIPITATION IS EXPECTED TO TRANSITION THROUGH
  SLEET FROM LATE TONIGHT INTO MONDAY MORNING BEFORE CHANGING TO
  ALL SNOW FOR MONDAY INTO MONDAY NIGHT.

* IMPACTS...THE ICE AND SNOW WILL MAKE TRAVEL DIFFICULT IN THE
  REGION FROM SUNDAY NIGHT THROUGH MONDAY NIGHT.

* TEMPERATURES...MAINLY IN THE 20S FROM SUNDAY NIGHT INTO MONDAY
  NIGHT.

* VISIBILITY...LESS THAN A QUARTER MILE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW, SLEET
AND FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITY AND USE EXTRA CAUTION IF
DRIVING.

&&

$$

NJZ007-008-PAZ062-082100-
/O.NEW.KPHI.WW.Y.0012.150208T2300Z-150210T1100Z/
WARREN-MORRIS-NORTHAMPTON-
INCLUDING THE CITIES OF...WASHINGTON...MORRISTOWN...BETHLEHEM...
EASTON
442 AM EST SUN FEB 8 2015

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
6 AM EST TUESDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
WEATHER ADVISORY FOR FREEZING RAIN, SLEET AND SNOW. IT IS IN
EFFECT FROM 600 PM THIS EVENING UNTIL 600 AM TUESDAY.

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

* SNOW ACCUMULATIONS...THERE IS THE POTENTIAL FOR 2 TO 5 INCHES.

* ICE ACCUMULATIONS...THERE IS THE POTENTIAL FOR ONE TENTH TO ONE
  QUARTER INCH.

* TIMING...RAIN AND FREEZING RAIN IS FORECAST TO MOVE INTO THE
  REGION THIS EVENING. THE PRECIPITATION IS EXPECTED TO TRANSITION
  TO FREEZING RAIN, SLEET AND SNOW FOR LATE TONIGHT INTO MONDAY
  BEFORE CHANGING TO ALL SNOW ON MONDAY NIGHT.

* IMPACTS...THE ICE AND SNOW WILL MAKE TRAVEL DIFFICULT IN THE
  REGION FROM SUNDAY NIGHT THROUGH MONDAY NIGHT.

* TEMPERATURES...MAINLY IN THE LOWER 30S TONIGHT, AROUND 30 ON
  MONDAY AND DROPPING INTO THE 20S ON MONDAY NIGHT.

* VISIBILITY...LESS THAN A QUARTER MILE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW, SLEET
AND FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITY AND USE EXTRA CAUTION IF
DRIVING.

&&

$$

NJZ009-010-PAZ061-105-082100-
/O.NEW.KPHI.WW.Y.0012.150209T0500Z-150210T1100Z/
HUNTERDON-SOMERSET-LEHIGH-UPPER BUCKS-
INCLUDING THE CITIES OF...FLEMINGTON...SOMERVILLE...ALLENTOWN...
CHALFONT...PERKASIE
442 AM EST SUN FEB 8 2015

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
6 AM EST TUESDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
WEATHER ADVISORY FOR FREEZING RAIN, SLEET AND SNOW. IT IS IN
EFFECT FROM MIDNIGHT TONIGHT UNTIL 600 AM TUESDAY.

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

* SNOW ACCUMULATIONS...THERE IS THE POTENTIAL FOR 1 TO 3 INCHES.

* ICE ACCUMULATIONS...THERE IS THE POTENTIAL FOR UP TO ONE TENTH
  OF AN INCH.

* TIMING...RAIN IS FORECAST TO MOVE INTO THE REGION THIS EVENING.
  THE RAIN IS EXPECTED TO CHANGE TO FREEZING RAIN AND SLEET LATE
  TONIGHT. THE PRECIPITATION IS ANTICIPATED TO MIX WITH SNOW ON
  MONDAY BEFORE CHANGING TO ALL SNOW ON MONDAY NIGHT.

* IMPACTS...THE ICE AND SNOW WILL MAKE TRAVEL DIFFICULT IN THE
  REGION FROM LATE TONIGHT THROUGH MONDAY NIGHT.

* TEMPERATURES...MAINLY IN THE LOWER 30S LATE TONIGHT AND MONDAY,
  FALLING INTO THE 20S ON MONDAY NIGHT.

* VISIBILITY...LESS THAN A HALF MILE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW, SLEET
AND FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITY AND USE EXTRA CAUTION IF
DRIVING.

&&

$$

NJZ012-015-PAZ060-101>104-106-082100-
/O.NEW.KPHI.WW.Y.0012.150209T1100Z-150210T1100Z/
MIDDLESEX-MERCER-BERKS-WESTERN CHESTER-EASTERN CHESTER-
WESTERN MONTGOMERY-EASTERN MONTGOMERY-LOWER BUCKS-
INCLUDING THE CITIES OF...NEW BRUNSWICK...TRENTON...READING...
HONEY BROOK...OXFORD...WEST CHESTER...KENNETT SQUARE...
COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...MORRISVILLE...
DOYLESTOWN
442 AM EST SUN FEB 8 2015

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM MONDAY TO 6 AM EST
TUESDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A WINTER
WEATHER ADVISORY FOR FREEZING RAIN, SLEET AND SNOW. IT IS IN
EFFECT FROM 600 AM MONDAY UNTIL 600 AM TUESDAY.

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

* SNOW ACCUMULATIONS...THERE IS THE POTENTIAL FOR UP TO AN INCH
  OR TWO.

* ICE ACCUMULATIONS...THERE IS THE POTENTIAL FOR UP TO ONE TENTH
  OF AN INCH.

* TIMING...RAIN IS FORECAST TO MOVE INTO THE REGION TONIGHT. THE
  RAIN IS EXPECTED TO MIX WITH FREEZING RAIN, SLEET AND SNOW ON
  MONDAY BEFORE CHANGING TO SNOW AND SLEET ON MONDAY NIGHT.

* IMPACTS...THE ICE AND SNOW WILL MAKE TRAVEL DIFFICULT IN THE
  REGION FROM MONDAY THROUGH MONDAY NIGHT.

* TEMPERATURES...MAINLY IN THE LOWER AND MIDDLE 30S ON MONDAY,
  FALLING INTO THE 20S ON MONDAY NIGHT.

* VISIBILITY...LESS THAN A HALF MILE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW, SLEET
AND FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITY AND USE EXTRA CAUTION IF
DRIVING.

&&

$$

IOVINO

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.