Alert archive / New Jersey / Frost Advisories in 2010

Frost Advisory 9, NWS Philadelphia/Mount Holly

October 29, 20104 states

NWS Philadelphia/Mount Holly issued this frost advisory at Oct 29, 2010, 3:24 PM EDT for 4 states. It took effect at Oct 30, 2010, 2:00 AM EDT. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Oct 29, 2010, 3:24 PM EDT (19:24 UTC)
In effect from
Oct 30, 2010, 2:00 AM EDT
Expired
Oct 30, 2010, 4:00 AM EDT
In force
2 hr
Issued by
NWS Philadelphia/Mount Holly

Counties New Castle County, DE, Cecil County, MD, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ, Delaware County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 77 km from the middle of the area, began a volume at 19:27 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.4 hours before the alert went out and 78 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, Phillips Aaf/Abe, MD at 12:00Z on 2010-10-29Temperature 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 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2010-10-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -21 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1156 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
-21 m²/s²
0-3 km storm-relative helicity
158 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.

353 
WWUS71 KPHI 291924
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
324 PM EDT FRI OCT 29 2010


DEZ001-MDZ008-NJZ016>019-021-023-PAZ070-071-301200-
/O.NEW.KPHI.FR.Y.0009.101030T0600Z-101030T1200Z/
NEW CASTLE-CECIL-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-
CUMBERLAND-CAPE MAY-DELAWARE-PHILADELPHIA-
INCLUDING THE CITIES OF...WILMINGTON...ELKTON...PENNSVILLE...
GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...
MILLVILLE...CAPE MAY COURT HOUSE...MEDIA...PHILADELPHIA
324 PM EDT FRI OCT 29 2010

...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT SATURDAY...

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FROST
ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 8 AM EDT SATURDAY. 

SKIES WILL CLEAR THIS EVENING AND GUSTY NORTHWEST WINDS WILL
BECOME LIGHT TONIGHT. THIS COMBINED WITH TEMPERATURES DROPPING
INTO THE THE LOW TO MID 30S ACROSS THE AREA WILL ALLOW FOR THE
FORMATION OF FROST IN THE MORE RURAL AND LOW LYING AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MEOLA
2 follow-up statements
490 
WWUS71 KPHI 300353
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1153 PM EDT FRI OCT 29 2010

DEZ001-MDZ008-NJZ016>019-021-023-PAZ070-071-301200-
/O.CON.KPHI.FR.Y.0009.101030T0600Z-101030T1200Z/
NEW CASTLE-CECIL-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-
CUMBERLAND-CAPE MAY-DELAWARE-PHILADELPHIA-
INCLUDING THE CITIES OF...WILMINGTON...ELKTON...PENNSVILLE...
GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...
MILLVILLE...CAPE MAY COURT HOUSE...MEDIA...PHILADELPHIA
1153 PM EDT FRI OCT 29 2010

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT SATURDAY...

A FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT SATURDAY. 

CLEAR SKIES ALONG WITH DIMINISHING WINDS AND A DRIER AIR MASS
WILL ALLOW TEMPERATURES TO DROP INTO THE THE LOW TO MID 30S
THIS MORNING. THIS WILL ALLOW FOR THE FORMATION OF FROST IN THE
MORE RURAL AND LOW LYING AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED OR NOT BROUGHT INDOORS.

&&

$$
926 
WWUS71 KPHI 300800
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
400 AM EDT SAT OCT 30 2010
 
DEZ001-MDZ008-NJZ016>019-021-023-PAZ070-071-300900-
/O.CAN.KPHI.FR.Y.0009.000000T0000Z-101030T1200Z/
NEW CASTLE-CECIL-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-
CUMBERLAND-CAPE MAY-DELAWARE-PHILADELPHIA-
INCLUDING THE CITIES OF...WILMINGTON...ELKTON...PENNSVILLE...
GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...
MILLVILLE...CAPE MAY COURT HOUSE...MEDIA...PHILADELPHIA
400 AM EDT SAT OCT 30 2010

...FROST ADVISORY IS CANCELLED...

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

WHILE THERE WILL BE SOME PATCHY FROST IN SHELTERED LOW LYING AREAS
THIS MORNING, WINDS HAVE PERSISTED TOO DEEP INTO THE EARLY MORNING TO
PERMIT WIDESPREAD FROST FROM OCCURRING. 

$$

TFG

Nearby

Frost Advisories in New Jersey, 2010Frost Advisories in Pennsylvania, 2010Frost Advisories in Maryland, 2010Every frost advisory in 2010

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.