Alert archive / Maryland / Frost Advisories in 2015
Frost Advisory 2, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this frost advisory at Apr 24, 2015, 3:28 PM EDT for 4 states. It took effect at Apr 25, 2015, 2:00 AM EDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Apr 24, 2015, 3:28 PM EDT (19:28 UTC)
- In effect from
- Apr 25, 2015, 2:00 AM EDT
- Expired
- Apr 25, 2015, 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, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Atlantic County, NJ, Cape May County, NJ, Monmouth County, NJ, Ocean County, NJ, Delaware County, PA, Philadelphia County, PA
The radar
The Dover AFB radar (KDOX), 62 km from the middle of the area, began a volume at 19:28 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, 7.5 hours before the alert went out and 161 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
- 1458 m above ground
- 0-6 km bulk shear
- 97 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
887 WWUS71 KPHI 241928 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 328 PM EDT FRI APR 24 2015 MDZ008-NJZ001-007>010-012-013-015>022-027-PAZ060>062-101>106- 250900- /O.UPG.KPHI.FZ.A.0002.150425T0600Z-150425T1200Z/ /O.NEW.KPHI.FZ.W.0002.150425T0600Z-150425T1200Z/ CECIL-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX- WESTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC- SOUTHEASTERN BURLINGTON-BERKS-LEHIGH-NORTHAMPTON-WESTERN CHESTER- EASTERN CHESTER-WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS- LOWER BUCKS- INCLUDING THE CITIES OF...ELKTON...NEWTON...WASHINGTON... MORRISTOWN...FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...FREEHOLD... TRENTON...PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL... MOORESTOWN...MOUNT HOLLY...JACKSON...MILLVILLE...HAMMONTON... WHARTON STATE FOREST...READING...ALLENTOWN...BETHLEHEM...EASTON... HONEY BROOK...OXFORD...WEST CHESTER...KENNETT SQUARE... COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...CHALFONT... PERKASIE...MORRISVILLE...DOYLESTOWN 328 PM EDT FRI APR 24 2015 ...FREEZE WARNING IN EFFECT FROM 2 AM TO 8 AM EDT SATURDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM 2 AM TO 8 AM EDT SATURDAY. THE FREEZE WATCH IS NO LONGER IN EFFECT. * TIMING...TEMPERATURES BELOW FREEZING ARE POSSIBLE THROUGH THE EARLY MORNING HOURS ON SATURDAY. * LOW TEMPERATURES...UPPER 20S TO LOW 30S * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS THAT ARE UNPROTECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ DEZ001>004-MDZ012-015-019-020-NJZ014-023>026-PAZ070-071-250900- /O.NEW.KPHI.FR.Y.0002.150425T0600Z-150425T1200Z/ NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-KENT MD- QUEEN ANNES-TALBOT-CAROLINE-EASTERN MONMOUTH-CAPE MAY- ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-DELAWARE- PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN... REHOBOTH BEACH...CHESTERTOWN...CENTREVILLE...EASTON...DENTON... SANDY HOOK...CAPE MAY COURT HOUSE...OCEAN CITY...ATLANTIC CITY... LONG BEACH ISLAND...MEDIA...PHILADELPHIA 328 PM EDT FRI APR 24 2015 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT SATURDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 8 AM EDT SATURDAY. * LOW TEMPERATURES...IN THE MID 30S. * TIMING...FROST IS POSSIBLE THROUGH THE EARLY MORNING HOURS ON SATURDAY. * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS THAT ARE UNPROTECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT WIDESPREAD FROST IS EXPECTED. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
3 follow-up statements
044 WWUS71 KPHI 250154 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 954 PM EDT FRI APR 24 2015 MDZ008-NJZ001-007>010-012-013-015>022-027-PAZ060>062-101>106- 251000- /O.CON.KPHI.FZ.W.0002.150425T0600Z-150425T1200Z/ CECIL-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX- WESTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC- SOUTHEASTERN BURLINGTON-BERKS-LEHIGH-NORTHAMPTON-WESTERN CHESTER- EASTERN CHESTER-WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS- LOWER BUCKS- INCLUDING THE CITIES OF...ELKTON...NEWTON...WASHINGTON... MORRISTOWN...FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...FREEHOLD... TRENTON...PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL... MOORESTOWN...MOUNT HOLLY...JACKSON...MILLVILLE...HAMMONTON... WHARTON STATE FOREST...READING...ALLENTOWN...BETHLEHEM...EASTON... HONEY BROOK...OXFORD...WEST CHESTER...KENNETT SQUARE... COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...CHALFONT... PERKASIE...MORRISVILLE...DOYLESTOWN 954 PM EDT FRI APR 24 2015 ...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 8 AM EDT SATURDAY... * TIMING...FREEZING TEMPERATURES ARE POSSIBLE LATE TONIGHT AND EARLY SATURDAY MORNING. * LOW TEMPERATURES...UPPER 20S TO LOW 30S. * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS THAT ARE UNPROTECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ DEZ001>004-MDZ012-015-019-020-NJZ014-023>026-PAZ070-071-251000- /O.CON.KPHI.FR.Y.0002.150425T0600Z-150425T1200Z/ NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-KENT MD- QUEEN ANNES-TALBOT-CAROLINE-EASTERN MONMOUTH-CAPE MAY- ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-DELAWARE- PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN... REHOBOTH BEACH...CHESTERTOWN...CENTREVILLE...EASTON...DENTON... SANDY HOOK...CAPE MAY COURT HOUSE...OCEAN CITY...ATLANTIC CITY... LONG BEACH ISLAND...MEDIA...PHILADELPHIA 954 PM EDT FRI APR 24 2015 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM EDT SATURDAY... * LOW TEMPERATURES...MID 30S. * TIMING...FROST MAY DEVELOP IN SHELTERED AREAS EARLY MORNING SATURDAY. * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS THAT ARE UNPROTECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT WIDESPREAD FROST IS EXPECTED. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
911 WWUS71 KPHI 250751 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 351 AM EDT SAT APR 25 2015 MDZ008-NJZ001-007>010-012-013-015>022-027-PAZ060>062-101>106- 251200- /O.CON.KPHI.FZ.W.0002.000000T0000Z-150425T1200Z/ CECIL-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX- WESTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC- SOUTHEASTERN BURLINGTON-BERKS-LEHIGH-NORTHAMPTON-WESTERN CHESTER- EASTERN CHESTER-WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS- LOWER BUCKS- INCLUDING THE CITIES OF...ELKTON...NEWTON...WASHINGTON... MORRISTOWN...FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...FREEHOLD... TRENTON...PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL... MOORESTOWN...MOUNT HOLLY...JACKSON...MILLVILLE...HAMMONTON... WHARTON STATE FOREST...READING...ALLENTOWN...BETHLEHEM...EASTON... HONEY BROOK...OXFORD...WEST CHESTER...KENNETT SQUARE... COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...CHALFONT... PERKASIE...MORRISVILLE...DOYLESTOWN 351 AM EDT SAT APR 25 2015 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * TIMING...FREEZING TEMPERATURES ARE OCCURRING OR HAVE OCCURRED OVER MUCH OF THE COUNTRYSIDE OF EASTERN PENNSYLVANIA AND NEW JERSEY THIS MORNING. TEMPERATURES WERE NEAR FREEZING IN CECIL COUNTY OF NORTHEAST MARYLAND. * LOW TEMPERATURES...MIDDLE 20S TO LOWER 30S. * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS THAT ARE UNPROTECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ DEZ001>004-MDZ012-015-019-020-NJZ014-023>026-PAZ070-071-251200- /O.CON.KPHI.FR.Y.0002.000000T0000Z-150425T1200Z/ NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-KENT MD- QUEEN ANNES-TALBOT-CAROLINE-EASTERN MONMOUTH-CAPE MAY- ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-DELAWARE- PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN... REHOBOTH BEACH...CHESTERTOWN...CENTREVILLE...EASTON...DENTON... SANDY HOOK...CAPE MAY COURT HOUSE...OCEAN CITY...ATLANTIC CITY... LONG BEACH ISLAND...MEDIA...PHILADELPHIA 351 AM EDT SAT APR 25 2015 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * LOW TEMPERATURES...MID 30S. * TIMING...FROST MAY DEVELOP IN SOME OF THE SHELTERED AREAS EARLY TODAY. * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS THAT ARE UNPROTECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT WIDESPREAD FROST IS EXPECTED. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ DRAG
083 WWUS71 KPHI 251200 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 800 AM EDT SAT APR 25 2015 MDZ008-NJZ001-007>010-012-013-015>022-027-PAZ060>062-101>106- 251300- /O.CAN.KPHI.FZ.W.0002.000000T0000Z-150425T1200Z/ CECIL-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX- WESTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC- SOUTHEASTERN BURLINGTON-BERKS-LEHIGH-NORTHAMPTON-WESTERN CHESTER- EASTERN CHESTER-WESTERN MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS- LOWER BUCKS- INCLUDING THE CITIES OF...ELKTON...NEWTON...WASHINGTON... MORRISTOWN...FLEMINGTON...SOMERVILLE...NEW BRUNSWICK...FREEHOLD... TRENTON...PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL... MOORESTOWN...MOUNT HOLLY...JACKSON...MILLVILLE...HAMMONTON... WHARTON STATE FOREST...READING...ALLENTOWN...BETHLEHEM...EASTON... HONEY BROOK...OXFORD...WEST CHESTER...KENNETT SQUARE... COLLEGEVILLE...POTTSTOWN...NORRISTOWN...LANSDALE...CHALFONT... PERKASIE...MORRISVILLE...DOYLESTOWN 800 AM EDT SAT APR 25 2015 ...FREEZE WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE FREEZE WARNING. THE TEMPERATURES WILL CONTINUE TO RISE THIS MORNING. THEREFORE, THE FREEZE WARNING WILL BE DISCONTINUED. $$ DEZ001>004-MDZ012-015-019-020-NJZ014-023>026-PAZ070-071-251300- /O.CAN.KPHI.FR.Y.0002.000000T0000Z-150425T1200Z/ NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-KENT MD- QUEEN ANNES-TALBOT-CAROLINE-EASTERN MONMOUTH-CAPE MAY- ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN-DELAWARE- PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...DOVER...GEORGETOWN... REHOBOTH BEACH...CHESTERTOWN...CENTREVILLE...EASTON...DENTON... SANDY HOOK...CAPE MAY COURT HOUSE...OCEAN CITY...ATLANTIC CITY... LONG BEACH ISLAND...MEDIA...PHILADELPHIA 800 AM EDT SAT APR 25 2015 ...FROST ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE FROST ADVISORY. THE TEMPERATURES WILL CONTINUE TO RISE THIS MORNING. THEREFORE, THE FROST ADVISORY WILL BE DISCONTINUED. $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 3:28 PM EDT | Freeze Warning | PHI | Cecil | 17 hr |
| Apr 24, 8:22 AM EDT | Gale Warning | PHI | 4 hr |
Nearby
Frost Advisories in Maryland, 2015Frost Advisories in New Jersey, 2015Frost Advisories in Delaware, 2015Every frost advisory in 2015
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.