Alert archive / Pennsylvania / Frost Advisories in 2006

Frost Advisory 1, NWS Philadelphia/Mount Holly

April 28, 20065 counties in Pennsylvania; Hunterdon County, Sussex County, Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this frost advisory at Apr 28, 2006, 3:30 PM EDT for 5 counties in Pennsylvania; Hunterdon County, Sussex County, Warren County, New Jersey. It took effect at Apr 29, 2006, 2:00 AM EDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Apr 28, 2006, 3:30 PM EDT (19:30 UTC)
In effect from
Apr 29, 2006, 2:00 AM EDT
Expired
Apr 29, 2006, 8:00 AM EDT
In force
6 hr
Issued by
NWS Philadelphia/Mount Holly

Counties Hunterdon County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 121 km from the middle of the area, began a volume at 19:36 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, 7.5 hours before the alert went out and 206 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 2006-04-28Temperature 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 2006-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 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
1446 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
174 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 281930
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
330 PM EDT FRI APR 28 2006

NJZ001-007-009-PAZ054-055-060>062-067>069-291000-
/O.NEW.KPHI.FR.Y.0001.060429T0600Z-060429T1200Z/
SUSSEX-WARREN-HUNTERDON-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
CHESTER-MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...NEWTON...WASHINGTON...FLEMINGTON...
JIM THORPE...STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...
EASTON...WEST CHESTER...NORRISTOWN...DOYLESTOWN
330 PM EDT FRI APR 28 2006

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

UNDER A CLEAR SKY WITH A LIGHT WIND...TEMPERATURES ARE EXPECTED
TO DROP INTO THE LOWER AND MIDDLE 30S LATE TONIGHT IN MUCH OF
EASTERN PENNSYLVANIA AND NORTHWESTERN NEW JERSEY...AND AREAS OF
FROST WILL LIKELY DEVELOP. AS A RESULT...THE NATIONAL WEATHER
SERVICE HAS ISSUED A FROST ADVISORY FOR LATE TONIGHT AND EARLY
SATURDAY MORNING.

BE SURE TO PROTECT SENSITIVE VEGETATION AND BRING ANY POTTED PLANTS 
INDOORS.

$$

IOVINO
1 follow-up statement
000 
WWUS71 KPHI 290654
NPWPHI

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
254 AM EDT SAT APR 29 2006

NJZ001-007-009-PAZ054-055-060>062-067>069-291200-
/O.CON.KPHI.FR.Y.0001.000000T0000Z-060429T1200Z/
SUSSEX-WARREN-HUNTERDON-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
CHESTER-MONTGOMERY-BUCKS-
INCLUDING THE CITIES OF...NEWTON...WASHINGTON...FLEMINGTON...
JIM THORPE...STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...
EASTON...WEST CHESTER...NORRISTOWN...DOYLESTOWN
254 AM EDT SAT APR 29 2006

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

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

TEMPERATURES DROPPED INTO THE 30S OVERNIGHT. THESE COLD
TEMPERATURES COMBINED WITH LIGHT WINDS, ALLOWED SCATTERED FROST
TO FORM, ESPECIALLY IN OUTLYING AND RURAL AREAS.

BE SURE TO PROTECT SENSITIVE VEGETATION AND BRING ANY POTTED
PLANTS INDOORS.

$$

STAUBER

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.