Alert archive / New Jersey / Frost Advisories in 2009
Frost Advisory 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this frost advisory at Apr 16, 2009, 3:01 PM EDT for 4 states. It took effect at Apr 17, 2009, 2:00 AM EDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Apr 16, 2009, 3:01 PM EDT (19:01 UTC)
- In effect from
- Apr 17, 2009, 2:00 AM EDT
- Expired
- Apr 17, 2009, 8:00 AM EDT
- In force
- 6 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Ocean County, NJ, Salem County, NJ, Delaware County, PA
The radar
The Dover AFB radar (KDOX), 62 km from the middle of the area, began a volume at 18:58 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, 7.0 hours before the alert went out and 65 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1911 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS71 KPHI 161901 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 301 PM EDT THU APR 16 2009 DEZ001>003-MDZ008-012-015-019-020-NJZ016>023-027-PAZ070-171200- /O.NEW.KPHI.FR.Y.0001.090417T0600Z-090417T1200Z/ NEW CASTLE-KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT- CAROLINE-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN- CUMBERLAND-ATLANTIC-CAPE MAY-SOUTHEASTERN BURLINGTON-DELAWARE- INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN... ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...DENTON... PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN... MOUNT HOLLY...JACKSON...MILLVILLE...HAMMONTON... CAPE MAY COURT HOUSE...WHARTON STATE FOREST...MEDIA 301 PM EDT THU APR 16 2009 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT FRIDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 8 AM EDT FRIDAY. THE GROWING SEASON IS UNDERWAY IN SOUTHERN NEW JERSEY, THE DELMARVA AND DELAWARE COUNTY PA. THE COMBINATION OF CLEAR SKIES AND LIGHT WINDS TONIGHT WILL CAUSE FROST TO DEVELOP ACROSS THE REGION. THE ADVISORY WILL BE IN AFFECT FOR THE AREAS WHERE THE GROWING SEASON HAS STARTED. AREAS CLOSE TO THE SHORE AND DELAWARE MAY BAY MAY REMAIN JUST WARM ENOUGH TO KEEP FROST FROM FORMING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
4 follow-up statements
000 WWUS71 KPHI 162219 CCA NPWPHI URGENT - WEATHER MESSAGE...CORRECTED NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 616 PM EDT THU APR 16 2009 DEZ001>003-MDZ008-012-015-019-020-NJZ016>023-027-PAZ070-171200- /O.COR.KPHI.FR.Y.0001.090417T0600Z-090417T1200Z/ NEW CASTLE-KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT- CAROLINE-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN- CUMBERLAND-ATLANTIC-CAPE MAY-SOUTHEASTERN BURLINGTON-DELAWARE- INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN... ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...DENTON... PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN... MOUNT HOLLY...JACKSON...MILLVILLE...HAMMONTON... CAPE MAY COURT HOUSE...WHARTON STATE FOREST...MEDIA 616 PM EDT THU APR 16 2009 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT FRIDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 8 AM EDT FRIDAY. THE GROWING SEASON IS UNDERWAY IN SOUTHERN NEW JERSEY, THE DELMARVA AND DELAWARE COUNTY, PA. THE COMBINATION OF CLEAR SKIES AND LIGHT WINDS TONIGHT WILL CAUSE FROST TO DEVELOP ACROSS THE REGION. THE ADVISORY WILL BE IN EFFECT FOR THE AREAS WHERE THE GROWING SEASON HAS STARTED. AREAS CLOSE TO THE SHORE AND DELAWARE BAY MAY REMAIN JUST WARM ENOUGH TO KEEP FROST FROM FORMING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
000 WWUS71 KPHI 170155 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 955 PM EDT THU APR 16 2009 DEZ001>003-MDZ008-012-015-019-020-NJZ016>023-027-PAZ070-171200- /O.CON.KPHI.FR.Y.0001.090417T0600Z-090417T1200Z/ NEW CASTLE-KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT- CAROLINE-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN- CUMBERLAND-ATLANTIC-CAPE MAY-SOUTHEASTERN BURLINGTON-DELAWARE- INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN... ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...DENTON... PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN... MOUNT HOLLY...JACKSON...MILLVILLE...HAMMONTON... CAPE MAY COURT HOUSE...WHARTON STATE FOREST...MEDIA 955 PM EDT THU APR 16 2009 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM EDT FRIDAY... THE GROWING SEASON IS UNDERWAY IN SOUTHERN NEW JERSEY, THE DELMARVA AND DELAWARE COUNTY, PA. THE COMBINATION OF CLEAR SKIES AND LIGHT WINDS TONIGHT WILL CAUSE FROST TO DEVELOP ACROSS THE REGION. THE FROST ADVISORY IS IN EFFECT FOR THE AREAS WHERE THE GROWING SEASON HAS STARTED. AREAS CLOSE TO THE SHORE AND DELAWARE BAY SHOULD REMAIN JUST WARM ENOUGH TO KEEP FROST FROM FORMING, WHILE A PERIOD OF FREEZING TEMPERATURES IS POSSIBLE MAINLY IN THE MOST SHELTERED PORTIONS OF THE PINE BARRENS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS EXPECTED. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
000 WWUS71 KPHI 170840 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 440 AM EDT FRI APR 17 2009 DEZ001>003-MDZ008-012-015-019-020-NJZ016>023-027-PAZ070-171200- /O.CON.KPHI.FR.Y.0001.000000T0000Z-090417T1200Z/ NEW CASTLE-KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT- CAROLINE-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN- CUMBERLAND-ATLANTIC-CAPE MAY-SOUTHEASTERN BURLINGTON-DELAWARE- INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN... ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...DENTON... PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN... MOUNT HOLLY...JACKSON...MILLVILLE...HAMMONTON... CAPE MAY COURT HOUSE...WHARTON STATE FOREST...MEDIA 440 AM EDT FRI APR 17 2009 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... A FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING. THE FROST ADVISORY IS IN EFFECT FOR THE AREAS WHERE THE GROWING SEASON HAS STARTED. AREAS CLOSE TO THE SHORE AND DELAWARE BAY SHOULD REMAIN JUST WARM ENOUGH TO KEEP FROST FROM FORMING... WHILE A PERIOD OF FREEZING TEMPERATURES IS POSSIBLE MAINLY IN THE MOST SHELTERED PORTIONS OF THE PINE BARRENS. LOW TEMPERATURES THIS MORNING WERE GENERALLY EXPECTED TO BE IN THE LOWER TO MIDDLE 30S. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS EXPECTED. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
000 WWUS71 KPHI 171131 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 731 AM EDT FRI APR 17 2009 DEZ001>003-MDZ008-012-015-019-020-NJZ016>023-027-PAZ070-171245- /O.EXP.KPHI.FR.Y.0001.000000T0000Z-090417T1200Z/ NEW CASTLE-KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT- CAROLINE-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN- CUMBERLAND-ATLANTIC-CAPE MAY-SOUTHEASTERN BURLINGTON-DELAWARE- INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN... ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...DENTON... PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN... MOUNT HOLLY...JACKSON...MILLVILLE...HAMMONTON... CAPE MAY COURT HOUSE...WHARTON STATE FOREST...MEDIA 731 AM EDT FRI APR 17 2009 ...FROST ADVISORY WILL EXPIRE AT 8 AM EDT THIS MORNING... THE FROST ADVISORY WILL EXPIRE AT 8 AM EDT THIS MORNING. $$
Nearby
Frost Advisories in New Jersey, 2009Frost Advisories in Maryland, 2009Frost Advisories in Delaware, 2009Every frost advisory in 2009
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.