Alert archive / Pennsylvania / Frost Advisories in 2018

Frost Advisory 2, NWS Philadelphia/Mount Holly

October 13, 2018Carbon County, Monroe County, Pennsylvania; Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this frost advisory at Oct 13, 2018, 3:30 AM EDT for Carbon County, Monroe County, Pennsylvania; Sussex County, New Jersey. It took effect at Oct 14, 2018, 2:00 AM EDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Oct 13, 2018, 3:30 AM EDT (07:30 UTC)
In effect from
Oct 14, 2018, 2:00 AM EDT
Expired
Oct 14, 2018, 8:54 AM EDT
In force
7 hr
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 07:34 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, 7.5 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 2018-10-13Temperature 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 2018-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -93 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1354 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
-93 m²/s²
0-3 km storm-relative helicity
31 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

428 
WWUS71 KPHI 130730
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
330 AM EDT Sat Oct 13 2018

NJZ001-PAZ054-055-132100-
/O.NEW.KPHI.FR.Y.0002.181014T0600Z-181014T1300Z/
Sussex-Carbon-Monroe-
Including the cities of Newton, Jim Thorpe, and Stroudsburg
330 AM EDT Sat Oct 13 2018

...FROST ADVISORY IN EFFECT FROM 2 AM TO 9 AM EDT SUNDAY...

The National Weather Service in Mount Holly has issued a Frost
Advisory, which is in effect from 2 AM to 9 AM EDT Sunday.

* TEMPERATURES...As low as 34.

* TIMING...Late tonight into Sunday morning.

* IMPACTS...Frost and freeze conditions may damage sensitive 
  vegetation. Take steps now to protect tender plants from the 
  cold.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$
3 follow-up statements
337 
WWUS71 KPHI 131951
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
351 PM EDT Sat Oct 13 2018


NJZ001-PAZ054-055-141300-
/O.CON.KPHI.FR.Y.0002.181014T0600Z-181014T1300Z/
Sussex-Carbon-Monroe-
Including the cities of Newton, Jim Thorpe, and Stroudsburg
351 PM EDT Sat Oct 13 2018

...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 9 AM EDT
SUNDAY...

* TEMPERATURES...As low as 34.

* TIMING...Late tonight into Sunday morning.

* IMPACTS...Frost and freeze conditions may damage sensitive 
  vegetation. Take steps now to protect tender plants from the 
  cold.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$
662 
WWUS71 KPHI 140808
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
408 AM EDT Sun Oct 14 2018

NJZ001-PAZ054-055-141300-
/O.CON.KPHI.FR.Y.0002.000000T0000Z-181014T1300Z/
Sussex-Carbon-Monroe-
Including the cities of Newton, Jim Thorpe, and Stroudsburg
408 AM EDT Sun Oct 14 2018

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING...

* TEMPERATURES...As low as 34.

* TIMING...Through this morning.

* IMPACTS...Frost and freeze conditions may damage sensitive 
  vegetation. Take steps now to protect tender plants from the 
  cold.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed if left uncovered.

&&

$$
192 
WWUS71 KPHI 141254
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
854 AM EDT Sun Oct 14 2018

NJZ001-PAZ054-055-141400-
/O.CAN.KPHI.FR.Y.0002.000000T0000Z-181014T1300Z/
Sussex-Carbon-Monroe-
Including the cities of Newton, Jim Thorpe, and Stroudsburg
854 AM EDT Sun Oct 14 2018

...FROST ADVISORY IS CANCELLED...

The National Weather Service in Mount Holly has cancelled the
Frost Advisory.

Temperatures continue to warm through the 40s.

$$

MPS

Nearby

Frost Advisories in Pennsylvania, 2018Frost Advisories in New Jersey, 2018Every frost advisory in 2018

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.