Alert archive / New Jersey / Frost Advisories in 2013
Frost Advisory 2, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this frost advisory at Apr 20, 2013, 6:09 PM EDT for 4 states. It took effect at Apr 21, 2013, 2:00 AM EDT. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Apr 20, 2013, 6:09 PM EDT (22:09 UTC)
- In effect from
- Apr 21, 2013, 2:00 AM EDT
- Expired
- Apr 21, 2013, 6:13 AM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
All 24 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, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Salem County, NJ, Berks County, PA, Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 81 km from the middle of the area, began a volume at 22:12 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
Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.2 hours before the alert went out and 191 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
- 932 m above ground
- 0-6 km bulk shear
- 99 kt
- 0-1 km storm-relative helicity
- -282 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
248 WWUS71 KPHI 202209 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 609 PM EDT SAT APR 20 2013 DEZ001>003-MDZ008-012-015-019-020-NJZ012-013-015>023-027-PAZ060- 070-101>106-211200- /O.NEW.KPHI.FR.Y.0002.130421T0600Z-130421T1200Z/ NEW CASTLE-KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT- CAROLINE-MIDDLESEX-WESTERN MONMOUTH-MERCER-SALEM-GLOUCESTER- CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY- SOUTHEASTERN BURLINGTON-BERKS-DELAWARE-WESTERN CHESTER- EASTERN CHESTER-WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS- LOWER BUCKS- INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN... ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...DENTON... NEW BRUNSWICK...FREEHOLD...TRENTON...PENNSVILLE...GLASSBORO... CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...JACKSON... MILLVILLE...HAMMONTON...CAPE MAY COURT HOUSE... WHARTON STATE FOREST...READING...MEDIA...HONEY BROOK...OXFORD... WEST CHESTER...KENNET SQUARE...COLLEGEVILLE...POTTSTOWN... NORRISTOWN...LANSDALE...CHALFONT...PERKASIE...MORRISVILLE... DOYLESTOWN 609 PM EDT SAT APR 20 2013 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT SUNDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 8 AM EDT SUNDAY. * TEMPERATURES...DROPPING INTO THE LOWER TO MID 30S ON SUNDAY MORNING. * IMPACTS...TEMPERATURE SENSITIVE OUTDOOR VEGETATION WILL LIKELY BE DAMAGED IF PROTECTIVE MEASURES ARE NOT TAKEN OVERNIGHT. FROST IS MOST LIKELY TO OCCUR IN THE MORE SHELTERED AND LOW LYING AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. IF POSSIBLE, BRING SENSITIVE VEGETATION INDOORS OR COVER PLANTS THAT CAN NOT BE BROUGHT INDOORS. SPRINKLING VEGETATION WITH WATER MIGHT PREVENT FROST FORMATION. && $$
2 follow-up statements
093 WWUS71 KPHI 210752 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 352 AM EDT SUN APR 21 2013 DEZ001>003-MDZ008-012-015-019-020-NJZ016-021-023-210900- /O.CAN.KPHI.FR.Y.0002.000000T0000Z-130421T1200Z/ NEW CASTLE-KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT- CAROLINE-SALEM-CUMBERLAND-CAPE MAY- INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN... ELKTON...CHESTERTOWN...CENTREVILLE...EASTON...DENTON... PENNSVILLE...MILLVILLE...CAPE MAY COURT HOUSE 352 AM EDT SUN APR 21 2013 ...FROST ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE FROST ADVISORY. TEMPERATURES ARE IN THE LOW TO MID 40S WITH WIND SPEEDS IN THE 10 TO 15 MPH RANGE. FROST IS UNLIKELY TO FORM AND AS A RESULT WE HAVE CANCELLED THE FROST ADVISORY. $$ NJZ012-013-015-017>020-022-027-PAZ060-070-101>106-211200- /O.CON.KPHI.FR.Y.0002.000000T0000Z-130421T1200Z/ MIDDLESEX-WESTERN MONMOUTH-MERCER-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-ATLANTIC-SOUTHEASTERN BURLINGTON- BERKS-DELAWARE-WESTERN CHESTER-EASTERN CHESTER-WESTERN MONTGOMERY- EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS- INCLUDING THE CITIES OF...NEW BRUNSWICK...FREEHOLD...TRENTON... GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY... JACKSON...HAMMONTON...WHARTON STATE FOREST...READING...MEDIA... HONEY BROOK...OXFORD...WEST CHESTER...KENNET SQUARE... COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...CHALFONT... PERKASIE...MORRISVILLE...DOYLESTOWN 352 AM EDT SUN APR 21 2013 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * TEMPERATURES...IN THE MID 30S. * IMPACTS...TEMPERATURE SENSITIVE OUTDOOR VEGETATION WILL LIKELY BE DAMAGED IF PROTECTIVE MEASURES ARE NOT TAKEN. FROST IS MOST LIKELY TO OCCUR IN THE MORE SHELTERED AND LOW LYING AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. IF POSSIBLE... BRING SENSITIVE VEGETATION INDOORS OR COVER PLANTS THAT CAN NOT BE BROUGHT INDOORS. SPRINKLING VEGETATION WITH WATER MIGHT PREVENT FROST FORMATION. && $$
842 WWUS71 KPHI 211013 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 613 AM EDT SUN APR 21 2013 NJZ012-013-015-017>020-022-027-PAZ060-070-101>106-211115- /O.CAN.KPHI.FR.Y.0002.000000T0000Z-130421T1200Z/ MIDDLESEX-WESTERN MONMOUTH-MERCER-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-ATLANTIC-SOUTHEASTERN BURLINGTON- BERKS-DELAWARE-WESTERN CHESTER-EASTERN CHESTER-WESTERN MONTGOMERY- EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS- INCLUDING THE CITIES OF...NEW BRUNSWICK...FREEHOLD...TRENTON... GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY... JACKSON...HAMMONTON...WHARTON STATE FOREST...READING...MEDIA... HONEY BROOK...OXFORD...WEST CHESTER...KENNET SQUARE... COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...CHALFONT... PERKASIE...MORRISVILLE...DOYLESTOWN 613 AM EDT SUN APR 21 2013 ...FROST ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE FROST ADVISORY. WHILE TEMPERATURES HAVE FALLEN INTO THE MID 30S THIS MORNING, THE AIR MASS IS VERY DRY AND WIDESPREAD FROST IS NOT EXPECTED TO DEVELOP. THEREFORE, THE FROST ADVISORY HAS BEEN CANCELLED. $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 8:08 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 52 min |
| Apr 19, 8:20 PM EDT | Special Marine Warning | PHI | 85 min | |
| Apr 19, 8:23 PM EDT | Special Weather Statement | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more | 3 hr |
| Apr 19, 8:48 PM EDT | Special Weather Statement | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 3 more | 3 hr |
| Apr 19, 10:25 PM EDT | Special Marine Warning | PHI | 110 min | |
| Apr 20, 12:20 AM EDT | Small Craft Advisory | PHI | 30 hr |
Nearby
Frost Advisories in New Jersey, 2013Frost Advisories in Maryland, 2013Frost Advisories in Pennsylvania, 2013Every frost advisory in 2013
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.