Alert archive / Pennsylvania / Frost Advisories in 2006

Frost Advisory 6, NWS Philadelphia/Mount Holly

September 29, 2006Carbon County, Monroe County, Pennsylvania; Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this frost advisory at Sep 29, 2006, 4:01 AM EDT for Carbon County, Monroe County, Pennsylvania; Sussex County, New Jersey. It took effect at Sep 30, 2006, 3:00 AM EDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Sep 29, 2006, 4:01 AM EDT (08:01 UTC)
In effect from
Sep 30, 2006, 3:00 AM EDT
Expired
Sep 30, 2006, 8:00 AM EDT
In force
5 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 08:03 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, 8.0 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 2006-09-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 19 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 2006-09-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 221 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
19 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
777 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
221 m²/s²
0-3 km storm-relative helicity
267 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.

000 
WWUS71 KPHI 290801
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
401 AM EDT FRI SEP 29 2006


NJZ001-PAZ054-055-292100-
/O.NEW.KPHI.FR.Y.0006.060930T0700Z-060930T1200Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
401 AM EDT FRI SEP 29 2006

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

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

THE COMBINATION OF THE CHILLIEST AIR MASS OF THE FALL SEASON SO 
FAR...LIGHT WINDS AND GENERALLY CLEAR SKIES WILL HELP FROST TO FORM 
AFTER MIDNIGHT TONIGHT. THIS IS ESPECIALLY TRUE IN SHELTERED VALLEYS.
LOW TEMPERATURES TONIGHT ARE EXPECTED TO BOTTOM IN THE MIDDLE TO 
UPPER 30S. 

IT WOULD BE A GOOD IDEA TO BRING INDOORS TROPICAL PLANTS FOR THE 
SEASON. PLEASE TAKE OTHER PRECAUTIONARY MEASURES SUCH AS SPRINKLING 
WITH WATER OR COVERING YOUR PLANTS AND VEGETABLES TO PROLONG THE 
GROWING SEASON. THE NEXT CHANCE FOR FROST OR FREEZING TEMPERATURES 
IS NOT EXPECTED TO OCCUR AGAIN UNTIL THE END OF NEXT WEEK.
 
A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

$$

TFG
2 follow-up statements
000 
WWUS71 KPHI 292007
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
407 PM EDT FRI SEP 29 2006

NJZ001-PAZ054-055-301200-
/O.CON.KPHI.FR.Y.0006.060930T0700Z-060930T1200Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
407 PM EDT FRI SEP 29 2006

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

THE COMBINATION OF THE COLDEST AIR MASS OF THE FALL SEASON SO
FAR...LIGHT WINDS AND GENERALLY CLEAR SKIES WILL CREATE IDEAL
CONDITIONS FOR THE FORMATION OF FROST AFTER MIDNIGHT TONIGHT. THE
MOST FAVORABLE AREAS FOR FROST WILL BE IN IN SHELTERED VALLEYS.
LOW TEMPERATURES TONIGHT ARE EXPECTED TO BE IN THE MIDDLE TO
UPPER 30S.

PLEASE REMEMBER TO BRING SENSITIVE PLANTS INDOORS. TAKE OTHER
PRECAUTIONARY MEASURES SUCH AS SPRINKLING WITH WATER OR COVERING
VEGETABLES TO PROLONG THE GROWING SEASON. 

$$
000 
WWUS71 KPHI 301156
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
755 AM EDT SAT SEP 30 2006

NJZ001-PAZ054-055-301300-
/O.EXP.KPHI.FR.Y.0006.000000T0000Z-060930T1200Z/
SUSSEX-CARBON-MONROE-
INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG
755 AM EDT SAT SEP 30 2006

...FROST ADVISORY WILL EXPIRE AT 8 AM EDT THIS MORNING...

TEMPERATURES EARLY THIS MORNING DROPPED INTO THE MID AND UPPER 30S
ACROSS A GOOD PART OF THE REGION. THESE TEMPERATURES ALONG WITH
NEARLY CALM WINDS SHOULD HAVE BEEN ENOUGH TO RESULT IN SOME
FROST. TEMPERATURES WILL CONTINUE TO WARM THIS MORNING NOW THAT
THE SUN HAS RISEN. THEREFORE, THE FROST ADVISORY WILL BE ALLOWED
TO EXPIRE AT 8 AM.

$$

GORSE

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 28, 11:30 PM EDTSpecial Marine WarningPHI90 min
Sep 29, 12:12 AM EDTSpecial Marine WarningPHI93 min

Nearby

Frost Advisories in Pennsylvania, 2006Frost Advisories in New Jersey, 2006Every frost advisory in 2006

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.