Alert archive / Pennsylvania / Freeze Warnings in 2017

Freeze Warning 1, NWS Philadelphia/Mount Holly

May 7, 2017Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this freeze warning at May 7, 2017, 3:43 PM EDT for Carbon County, Monroe County, Pennsylvania. It took effect at May 8, 2017, 4:00 AM EDT. It was in force for . No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 7, 2017, 3:43 PM EDT (19:43 UTC)
In effect from
May 8, 2017, 4:00 AM EDT
Expired
May 8, 2017, 3:46 AM EDT
In force
Issued by
NWS Philadelphia/Mount Holly

Counties Carbon County, PA, Monroe County, PA

The radar

The Binghamton radar (KBGM), 140 km from the middle of the area, began a volume at 19:43 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, 7.7 hours before the alert went out and 224 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 2017-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 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 12:00Z on 2017-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.1939587897Sfc1 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
2 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
752 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
40 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

502 
WWUS71 KPHI 071943
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
343 PM EDT Sun May 7 2017

PAZ054-055-081200-
/O.NEW.KPHI.FZ.W.0001.170508T0800Z-170508T1200Z/
Carbon-Monroe-
Including the cities of Jim Thorpe and Stroudsburg
343 PM EDT Sun May 7 2017

...FREEZE WARNING IN EFFECT FROM 4 AM TO 8 AM EDT MONDAY...

The National Weather Service in Mount Holly has issued a Freeze
Warning, which is in effect from 4 AM to 8 AM EDT Monday.

* TEMPERATURES...Dropping to around freezing.

* TIMING...Temperatures are expected to drop to around freezing 
  early Monday morning.

* IMPACTS...Freezing conditions could damage sensitive outdoor 
  vegetation.

* Outlook...Freezing conditions are likely again Monday night 
  into Tuesday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$
1 follow-up statement
791 
WWUS71 KPHI 080746
NPWPHI

URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
346 AM EDT Mon May 8 2017

PAZ054-055-080900-
/O.CAN.KPHI.FZ.W.0001.170508T0800Z-170508T1200Z/
Carbon-Monroe-
Including the cities of Jim Thorpe and Stroudsburg
346 AM EDT Mon May 8 2017

...FREEZE WARNING IS CANCELLED...

The National Weather Service in Mount Holly has cancelled the
Freeze Warning.

Temperatures are anticipated to remain above freezing early this 
morning, therefore the freeze warning has been cancelled.

$$

Nearby

Freeze Warnings in Pennsylvania, 2017Every freeze warning in 2017

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.