Alert archive / Pennsylvania / Frost Advisories in 2013

Frost Advisory 6, NWS Philadelphia/Mount Holly

May 12, 20135 counties in Pennsylvania; Sussex County, Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this frost advisory at May 12, 2013, 4:17 AM EDT for 5 counties in Pennsylvania; Sussex County, Warren County, New Jersey. It took effect at May 13, 2013, 3:00 AM EDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
May 12, 2013, 4:17 AM EDT (08:17 UTC)
In effect from
May 13, 2013, 3:00 AM EDT
Expired
May 13, 2013, 7:58 AM EDT
In force
5 hr
Issued by
NWS Philadelphia/Mount Holly

Counties Sussex County, NJ, Warren County, NJ, Berks County, PA, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 127 km from the middle of the area, began a volume at 08:16 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, 8.3 hours before the alert went out and 210 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 2013-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 34 joules per kilogram.LCLLFCEL10008507005003002001001 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 2013-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.1939587897117Sfc1 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
34 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
589 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
92 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.

934 
WWUS71 KPHI 120817
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
417 AM EDT SUN MAY 12 2013

NJZ001-007-PAZ054-055-060>062-122100-
/O.NEW.KPHI.FR.Y.0006.130513T0700Z-130513T1200Z/
SUSSEX-WARREN-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
INCLUDING THE CITIES OF...NEWTON...WASHINGTON...JIM THORPE...
STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...EASTON
417 AM EDT SUN MAY 12 2013

...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM EDT MONDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FROST
ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 8 AM EDT MONDAY.

* TEMPERATURES...33 TO 36 DEGREES.

* TIMING...PRE-DAWN THROUGH EARLY MORNING MORNING.

* IMPACTS...POTENTIAL DAMAGE TO SENSITIVE OUTDOOR PLANTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$
4 follow-up statements
730 
WWUS71 KPHI 121926
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
326 PM EDT SUN MAY 12 2013

NJZ001-PAZ054-055-130900-
/O.NEW.KPHI.FZ.A.0001.130514T0500Z-130514T1100Z/
/O.CON.KPHI.FR.Y.0006.130513T0700Z-130513T1200Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
326 PM EDT SUN MAY 12 2013

...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM EDT
MONDAY...
...FREEZE WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY
MORNING...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZE
WATCH...WHICH IS IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY
MORNING.

* LOCATIONS...THE POCONOS AND SUSSEX COUNTY OF EXTREME NORTHWEST
  NEW JERSEY.

* LOW TEMPERATURES LATE TONIGHT...31 TO 36 DEGREES. THERE MAY BE A
  BIT TOO MUCH WIND TONIGHT FOR FROST. LOW TEMPERATURES LATE
  MONDAY NIGHT 28 TO 33.

* TIMING...MOST VULNERABLE PERIOD FOR FROST OR FREEZING
  TEMPERATURES IS 3 AM TO SUNRISE.

* IMPACTS...POTENTIAL DAMAGE TO SENSITIVE OUTDOOR PLANTS...
  ESPECIALLY LATE MONDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE LATE TONIGHT.
SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED.

A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE.
THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION.

&&

$$

NJZ007-PAZ060>062-130900-
/O.CON.KPHI.FR.Y.0006.130513T0700Z-130513T1200Z/
WARREN-BERKS-LEHIGH-NORTHAMPTON-
INCLUDING THE CITIES OF...WASHINGTON...READING...ALLENTOWN...
BETHLEHEM...EASTON
326 PM EDT SUN MAY 12 2013

...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM EDT
MONDAY...

* LOCATIONS...THE LEHIGH VALLEY AND OTHER PORTIONS OF EAST CENTRAL
  PENNSYLVANIA. 

* TEMPERATURES...33 TO 36 DEGREES. THERE MAY BE A BIT TOO MUCH
  WIND TONIGHT FOR FROST.

* TIMING...MOST VULNERABLE PERIOD 3 AM TO SUNRISE. 

* IMPACTS...POTENTIAL DAMAGE TO SENSITIVE OUTDOOR PLANTS.

* OUTLOOK LATE MONDAY NIGHT...THERE IS A MUCH LARGER CHANCE OF
  MORE EXTENSIVE FROST OR TEMPERATURES VERY BRIEFLY REACHING 32
  LATE MONDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$


DRAG
532 
WWUS71 KPHI 121956 CCA
NPWPHI

URGENT - WEATHER MESSAGE...CORRECTED
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
355 PM EDT SUN MAY 12 2013

NJZ001-PAZ054-055-130945-
/O.NEW.KPHI.FZ.A.0001.130514T0500Z-130514T1100Z/
/O.CON.KPHI.FR.Y.0006.130513T0700Z-130513T1200Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
355 PM EDT SUN MAY 12 2013

...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM EDT
MONDAY...
...FREEZE WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY
MORNING...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZE
WATCH...WHICH IS IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY
MORNING.

* LOCATIONS...THE POCONOS AND SUSSEX COUNTY OF EXTREME NORTHWEST
  NEW JERSEY.

* LOW TEMPERATURES LATE TONIGHT...31 TO 36 DEGREES. THERE MAY BE A
  BIT TOO MUCH WIND TONIGHT FOR FROST. LOW TEMPERATURES LATE
  MONDAY NIGHT 28 TO 33.

* TIMING...MOST VULNERABLE PERIOD FOR FROST OR FREEZING
  TEMPERATURES IS 3 AM TO SUNRISE.

* IMPACTS...POTENTIAL DAMAGE TO SENSITIVE OUTDOOR PLANTS...
  ESPECIALLY LATE MONDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE LATE TONIGHT.
SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED.

A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE.
THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION.

&&

$$

NJZ007-PAZ060>062-130945-
/O.COR.KPHI.FR.Y.0006.130513T0700Z-130513T1200Z/
WARREN-BERKS-LEHIGH-NORTHAMPTON-
INCLUDING THE CITIES OF...WASHINGTON...READING...ALLENTOWN...
BETHLEHEM...EASTON
355 PM EDT SUN MAY 12 2013

...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM EDT
MONDAY...

* LOCATIONS...THE LEHIGH VALLEY AND OTHER PORTIONS OF EAST CENTRAL
  PENNSYLVANIA AS WELL AS WARREN COUNTY IN ADJACENT NORTHWEST NEW
  JERSEY.

* TEMPERATURES...33 TO 36 DEGREES. THERE MAY BE A BIT TOO MUCH
  WIND TONIGHT FOR FROST.

* TIMING...MOST VULNERABLE PERIOD 3 AM TO SUNRISE. 

* IMPACTS...POTENTIAL DAMAGE TO SENSITIVE OUTDOOR PLANTS.

* OUTLOOK LATE MONDAY NIGHT...THERE IS A MUCH LARGER CHANCE OF
  MORE EXTENSIVE FROST OR TEMPERATURES VERY BRIEFLY REACHING 32
  LATE MONDAY NIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$


DRAG  ..CORRECTION TO ADD WARREN COUNTY IN PART TWO LOCATIONS..
933 
WWUS71 KPHI 130806
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
406 AM EDT MON MAY 13 2013

NJZ001-PAZ054-055-131400-
/O.UPG.KPHI.FZ.A.0001.130514T0500Z-130514T1100Z/
/O.NEW.KPHI.FZ.W.0001.130514T0600Z-130514T1200Z/
/O.CON.KPHI.FR.Y.0006.000000T0000Z-130513T1200Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
406 AM EDT MON MAY 13 2013

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING...
...FREEZE WARNING IN EFFECT FROM 2 AM TO 8 AM EDT TUESDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZE
WARNING...WHICH IS IN EFFECT FROM 2 AM TO 8 AM EDT TUESDAY. THE
FREEZE WATCH IS NO LONGER IN EFFECT.

* LOCATIONS...THE POCONOS AND SUSSEX COUNTY OF EXTREME NORTHWEST 
  NEW JERSEY.

* LOW TEMPERATURES EARLY THIS MORNING...32 TO 36 DEGREES. THERE
  MAY BE A BIT TOO MUCH WIND DURING THE EARLY MORNING FOR FROST.
  LOW TEMPERATURES LATE TONIGHT 28 TO 33.

* TIMING...MOST VULNERABLE PERIOD FOR FROST OR FREEZING
  TEMPERATURES IS 2 AM TO SUNRISE.

* IMPACTS...POTENTIAL DAMAGE TO SENSITIVE OUTDOOR PLANTS...
  ESPECIALLY LATE TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE LATE TONIGHT.
SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED.

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION.

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

NJZ007-PAZ060>062-131200-
/O.CON.KPHI.FR.Y.0006.000000T0000Z-130513T1200Z/
WARREN-BERKS-LEHIGH-NORTHAMPTON-
INCLUDING THE CITIES OF...WASHINGTON...READING...ALLENTOWN...
BETHLEHEM...EASTON
406 AM EDT MON MAY 13 2013

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING...

* LOCATIONS...THE LEHIGH VALLEY AND OTHER PORTIONS OF EAST 
  CENTRAL PENNSYLVANIA AS WELL AS WARREN COUNTY IN ADJACENT 
  NORTHWEST NEW JERSEY.

* TEMPERATURES...33 TO 36 DEGREES. THERE MAY BE A BIT TOO MUCH
  WIND DURING THE EARLY MORNING FOR FROST.

* TIMING...MOST VULNERABLE PERIOD 3 AM TO SUNRISE.

* IMPACTS...POTENTIAL DAMAGE TO SENSITIVE OUTDOOR PLANTS.

* OUTLOOK LATE TONIGHT...THERE IS A MUCH LARGER CHANCE OF MORE
  EXTENSIVE FROST OR TEMPERATURES BRIEFLY REACHING FREEZING LATE
  TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$
084 
WWUS71 KPHI 131158
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
758 AM EDT MON MAY 13 2013

NJZ001-PAZ054-055-132000-
/O.CAN.KPHI.FR.Y.0006.000000T0000Z-130513T1200Z/
/O.CON.KPHI.FZ.W.0001.130514T0600Z-130514T1200Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
758 AM EDT MON MAY 13 2013

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 8 AM EDT
TUESDAY...
...FROST ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE
FROST ADVISORY.

* LOCATIONS...THE POCONOS AND SUSSEX COUNTY OF EXTREME NORTHWEST 
  NEW JERSEY.

* LOW TEMPERATURES LATE TONIGHT INTO TUESDAY MORNING...28 TO 33.

* TIMING...MOST VULNERABLE PERIOD FOR FROST OR FREEZING 
  TEMPERATURES IS 2 AM TO SUNRISE.

* IMPACTS...POTENTIAL DAMAGE TO SENSITIVE OUTDOOR PLANTS... 
  ESPECIALLY LATE TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION.

&&

$$

NJZ007-PAZ060>062-131300-
/O.CAN.KPHI.FR.Y.0006.000000T0000Z-130513T1200Z/
WARREN-BERKS-LEHIGH-NORTHAMPTON-
INCLUDING THE CITIES OF...WASHINGTON...READING...ALLENTOWN...
BETHLEHEM...EASTON
758 AM EDT MON MAY 13 2013

...FROST ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE
FROST ADVISORY.

TEMPERATUERS HAVE RISEN INTO THE 40S ACROSS THE AREA THIS MORNING.
TEMPERATURES WILL GET COLD AGAIN TONIGHT INTO TUESDAY MORNING, AND
A FROST ADVISORY WILL LIKELY BE ISSUED AGAIN LATER TODAY.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 12, 3:26 PM EDTFreeze WatchPHICarbon, Monroe13 hr

Nearby

Frost Advisories in Pennsylvania, 2013Frost Advisories in New Jersey, 2013Every frost advisory in 2013

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.