Alert archive / New Jersey / Frost Advisories in 2015

Frost Advisory 3, NWS Philadelphia/Mount Holly

April 25, 20155 counties in New Jersey; Bucks County, Lehigh County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this frost advisory at Apr 25, 2015, 3:34 PM EDT for 5 counties in New Jersey; Bucks County, Lehigh County, Northampton County, Pennsylvania. It took effect at Apr 26, 2015, 3:00 AM EDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Apr 25, 2015, 3:34 PM EDT (19:34 UTC)
In effect from
Apr 26, 2015, 3:00 AM EDT
Expired
Apr 26, 2015, 8:00 AM EDT
In force
5 hr
Issued by
NWS Philadelphia/Mount Holly

Counties Hunterdon County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Bucks County, PA, Lehigh County, PA, Northampton County, PA

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.6 hours before the alert went out and 178 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 2015-04-25Temperature 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 2015-04-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 square meters per square second.1939587897117136156175194Sfc1 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
1303 m above ground
0-6 km bulk shear
91 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
145 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.

357 
WWUS71 KPHI 251934
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
334 PM EDT SAT APR 25 2015

NJZ001-007>010-PAZ061-062-105-261200-
/O.NEW.KPHI.FR.Y.0003.150426T0700Z-150426T1200Z/
SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-LEHIGH-NORTHAMPTON-
UPPER BUCKS-
INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN...
FLEMINGTON...SOMERVILLE...ALLENTOWN...BETHLEHEM...EASTON...
CHALFONT...PERKASIE
334 PM EDT SAT APR 25 2015

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

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FROST
ADVISORY. IT IS IN EFFECT FROM 300 AM UNTIL 800 AM SUNDAY.

* TEMPERATURES...FALLING INTO THE MIDDLE 30S LATE TONIGHT.

* TIMING...PATCHY FROST IS EXPECTED TO DEVELOP FOR LATE TONIGHT
  AND EARLY SUNDAY MORNING.

* IMPACTS...THE FROST MAY DAMAGE OR KILL SENSITIVE PLANTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS FROST ADVISORY MEANS THAT PATCHY FROST IS EXPECTED.
SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

IOVINO
2 follow-up statements
890 
WWUS71 KPHI 260141
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
941 PM EDT SAT APR 25 2015

NJZ001-007>010-PAZ061-062-105-261200-
/O.CON.KPHI.FR.Y.0003.150426T0700Z-150426T1200Z/
SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-LEHIGH-NORTHAMPTON-
UPPER BUCKS-
INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN...
FLEMINGTON...SOMERVILLE...ALLENTOWN...BETHLEHEM...EASTON...
CHALFONT...PERKASIE
941 PM EDT SAT APR 25 2015

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

* TEMPERATURES...DROPPING INTO THE MID 30S EARLY SUNDAY MORNING.

* IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS THAT ARE 
  UNPROTECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS EXPECTED. SENSITIVE OUTDOOR
PLANTS SHOULD BE PROTECTED.

&&

$$
526 
WWUS71 KPHI 260739
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
339 AM EDT SUN APR 26 2015

NJZ001-007>010-PAZ061-062-105-261200-
/O.CON.KPHI.FR.Y.0003.000000T0000Z-150426T1200Z/
SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-LEHIGH-NORTHAMPTON-
UPPER BUCKS-
INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN...
FLEMINGTON...SOMERVILLE...ALLENTOWN...BETHLEHEM...EASTON...
CHALFONT...PERKASIE
339 AM EDT SUN APR 26 2015

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

* TEMPERATURES...IN THE UPPER 30S.

* IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS THAT ARE 
  UNPROTECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS EXPECTED. SENSITIVE OUTDOOR
PLANTS SHOULD BE PROTECTED.

&&

$$

Nearby

Frost Advisories in New Jersey, 2015Frost Advisories in Pennsylvania, 2015Every frost advisory 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.