Alert archive / Pennsylvania / Freeze Warnings in 2015
Freeze Warning 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this freeze warning at Apr 23, 2015, 4:04 AM EDT for 6 counties in Pennsylvania; 5 counties in New Jersey. It took effect at Apr 24, 2015, 2:00 AM EDT. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 23, 2015, 4:04 AM EDT (08:04 UTC)
- In effect from
- Apr 24, 2015, 2:00 AM EDT
- Expired
- Apr 24, 2015, 6:51 AM EDT
- In force
- 5 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Hunterdon County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Chester County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 94 km from the middle of the area, began a volume at 08:04 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, 8.1 hours before the alert went out and 197 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
- 862 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
372 WWUS71 KPHI 230804 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 404 AM EDT THU APR 23 2015 NJZ001-007>010-PAZ061-062-105-232115- /O.NEW.KPHI.FZ.W.0001.150424T0600Z-150424T1300Z/ /O.NEW.KPHI.FZ.A.0002.150425T0600Z-150425T1200Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-LEHIGH-NORTHAMPTON- UPPER BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...ALLENTOWN...BETHLEHEM...EASTON... CHALFONT...PERKASIE 404 AM EDT THU APR 23 2015 ...FREEZE WARNING IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY... ...FREEZE WATCH IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY MORNING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY. A FREEZE WATCH HAS ALSO BEEN ISSUED. THIS FREEZE WATCH IS IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY MORNING. * TEMPERATURES...IN THE LOWER UPPER 20S TO LOW 30S. * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ NJZ012-013-015>022-027-PAZ060-101>104-106-232115- /O.NEW.KPHI.FZ.A.0001.150424T0600Z-150424T1300Z/ /O.NEW.KPHI.FZ.A.0002.150425T0600Z-150425T1200Z/ MIDDLESEX-WESTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC- SOUTHEASTERN BURLINGTON-BERKS-WESTERN CHESTER-EASTERN CHESTER- WESTERN MONTGOMERY-EASTERN MONTGOMERY-LOWER BUCKS- INCLUDING THE CITIES OF...NEW BRUNSWICK...FREEHOLD...TRENTON... PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN... MOUNT HOLLY...JACKSON...MILLVILLE...HAMMONTON... WHARTON STATE FOREST...READING...HONEY BROOK...OXFORD... WEST CHESTER...KENNETT SQUARE...COLLEGEVILLE...POTTSTOWN... NORRISTOWN...LANSDALE...MORRISVILLE...DOYLESTOWN 404 AM EDT THU APR 23 2015 ...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY MORNING... ...FREEZE WATCH IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY MORNING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZE WATCH...WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY MORNING. A FREEZE WATCH HAS ALSO BEEN ISSUED FROM LATE FRIDAY NIGHT THROUGH SATURDAY MORNING. * TEMPERATURES...AROUND FREEZING. * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$
4 follow-up statements
901 WWUS71 KPHI 231945 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 345 PM EDT THU APR 23 2015 NJZ012-013-015>022-027-PAZ102-104-106-240400- /O.CAN.KPHI.FZ.A.0001.150424T0600Z-150424T1300Z/ /O.CON.KPHI.FZ.A.0002.150425T0600Z-150425T1200Z/ MIDDLESEX-WESTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC- SOUTHEASTERN BURLINGTON-EASTERN CHESTER-EASTERN MONTGOMERY- LOWER BUCKS- INCLUDING THE CITIES OF...NEW BRUNSWICK...FREEHOLD...TRENTON... PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN... MOUNT HOLLY...JACKSON...MILLVILLE...HAMMONTON... WHARTON STATE FOREST...WEST CHESTER...KENNETT SQUARE... NORRISTOWN...LANSDALE...MORRISVILLE...DOYLESTOWN 345 PM EDT THU APR 23 2015 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY MORNING... ...FREEZE WATCH IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE FREEZE WATCH FOR TONIGHT BUT CONTINUES THE FREEZE WATCH FOR FRIDAY NIGHT THROUGH SATURDAY MORNING. * TEMPERATURES...AROUND FREEZING. * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ PAZ060-101-103-240400- /O.UPG.KPHI.FZ.A.0001.150424T0600Z-150424T1300Z/ /O.EXA.KPHI.FZ.W.0001.150424T0600Z-150424T1300Z/ /O.CON.KPHI.FZ.A.0002.150425T0600Z-150425T1200Z/ BERKS-WESTERN CHESTER-WESTERN MONTGOMERY- INCLUDING THE CITIES OF...READING...HONEY BROOK...OXFORD... COLLEGEVILLE...POTTSTOWN 345 PM EDT THU APR 23 2015 ...FREEZE WARNING IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY MORNING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY. THE FREEZE WATCH IS NO LONGER IN EFFECT. * TEMPERATURES...AROUND FREEZING. * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ NJZ001-007>010-PAZ061-062-105-240400- /O.CON.KPHI.FZ.W.0001.150424T0600Z-150424T1300Z/ /O.CON.KPHI.FZ.A.0002.150425T0600Z-150425T1200Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-LEHIGH-NORTHAMPTON- UPPER BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...ALLENTOWN...BETHLEHEM...EASTON... CHALFONT...PERKASIE 345 PM EDT THU APR 23 2015 ...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY MORNING... * TEMPERATURES...IN THE LOWER UPPER 20S TO LOW 30S. * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$
811 WWUS71 KPHI 240202 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1002 PM EDT THU APR 23 2015 NJZ001-007>010-PAZ060>062-101-103-105-241015- /O.CON.KPHI.FZ.W.0001.150424T0600Z-150424T1300Z/ /O.CON.KPHI.FZ.A.0002.150425T0600Z-150425T1200Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-BERKS-LEHIGH-NORTHAMPTON- WESTERN CHESTER-WESTERN MONTGOMERY-UPPER BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...READING...ALLENTOWN...BETHLEHEM... EASTON...HONEY BROOK...OXFORD...COLLEGEVILLE...POTTSTOWN... CHALFONT...PERKASIE 1002 PM EDT THU APR 23 2015 ...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY MORNING... * LOW TEMPERATURES...UPPER 20S IN THE RIDGES, LOWER 30S IN THE VALLEY. * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS THAT ARE UNPROTECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ NJZ012-013-015>022-027-PAZ102-104-106-241015- /O.CON.KPHI.FZ.A.0002.150425T0600Z-150425T1200Z/ MIDDLESEX-WESTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC- SOUTHEASTERN BURLINGTON-EASTERN CHESTER-EASTERN MONTGOMERY- LOWER BUCKS- INCLUDING THE CITIES OF...NEW BRUNSWICK...FREEHOLD...TRENTON... PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN... MOUNT HOLLY...JACKSON...MILLVILLE...HAMMONTON... WHARTON STATE FOREST...WEST CHESTER...KENNETT SQUARE... NORRISTOWN...LANSDALE...MORRISVILLE...DOYLESTOWN 1002 PM EDT THU APR 23 2015 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE FRIDAY NIGHT THROUGH SATURDAY MORNING... * LOW TEMPERATURES...POTENTIAL FOR AROUND FREEZING EARLY SATURDAY MORNING. * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS THAT ARE UNPROTECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$
985 WWUS71 KPHI 240731 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 331 AM EDT FRI APR 24 2015 NJZ001-007>010-PAZ060>062-101-103-105-242115- /O.CON.KPHI.FZ.W.0001.000000T0000Z-150424T1300Z/ /O.CON.KPHI.FZ.A.0002.150425T0600Z-150425T1200Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-BERKS-LEHIGH-NORTHAMPTON- WESTERN CHESTER-WESTERN MONTGOMERY-UPPER BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...READING...ALLENTOWN...BETHLEHEM... EASTON...HONEY BROOK...OXFORD...COLLEGEVILLE...POTTSTOWN... CHALFONT...PERKASIE 331 AM EDT FRI APR 24 2015 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY MORNING... * LOW TEMPERATURES...UPPER 20S TO LOW 30S * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS THAT ARE UNPROTECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ MDZ008-242115- /O.EXA.KPHI.FZ.A.0002.150425T0600Z-150425T1200Z/ CECIL- INCLUDING THE CITY OF...ELKTON 331 AM EDT FRI APR 24 2015 ...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY MORNING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FREEZE WATCH...WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY MORNING. * LOW TEMPERATURES...LOW 30S. * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS THAT ARE UNPROTECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ NJZ012-013-015>022-027-PAZ102-104-106-242115- /O.CON.KPHI.FZ.A.0002.150425T0600Z-150425T1200Z/ MIDDLESEX-WESTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC- SOUTHEASTERN BURLINGTON-EASTERN CHESTER-EASTERN MONTGOMERY- LOWER BUCKS- INCLUDING THE CITIES OF...NEW BRUNSWICK...FREEHOLD...TRENTON... PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN... MOUNT HOLLY...JACKSON...MILLVILLE...HAMMONTON... WHARTON STATE FOREST...WEST CHESTER...KENNETT SQUARE... NORRISTOWN...LANSDALE...MORRISVILLE...DOYLESTOWN 331 AM EDT FRI APR 24 2015 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY MORNING... * LOW TEMPERATURES...LOW 30S. * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS THAT ARE UNPROTECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$
555 WWUS71 KPHI 241051 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 651 AM EDT FRI APR 24 2015 NJZ001-007>010-PAZ060>062-101-103-105-241900- /O.CAN.KPHI.FZ.W.0001.000000T0000Z-150424T1300Z/ /O.CON.KPHI.FZ.A.0002.150425T0600Z-150425T1200Z/ SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-BERKS-LEHIGH-NORTHAMPTON- WESTERN CHESTER-WESTERN MONTGOMERY-UPPER BUCKS- INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN... FLEMINGTON...SOMERVILLE...READING...ALLENTOWN...BETHLEHEM... EASTON...HONEY BROOK...OXFORD...COLLEGEVILLE...POTTSTOWN... CHALFONT...PERKASIE 651 AM EDT FRI APR 24 2015 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY MORNING... ...FREEZE WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE FREEZE WARNING. * LOW TEMPERATURES...UPPER 20S TO LOW 30S * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS THAT ARE UNPROTECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ MDZ008-NJZ012-013-015>022-027-PAZ102-104-106-241900- /O.CON.KPHI.FZ.A.0002.150425T0600Z-150425T1200Z/ CECIL-MIDDLESEX-WESTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC- SOUTHEASTERN BURLINGTON-EASTERN CHESTER-EASTERN MONTGOMERY- LOWER BUCKS- INCLUDING THE CITIES OF...ELKTON...NEW BRUNSWICK...FREEHOLD... TRENTON...PENNSVILLE...GLASSBORO...CAMDEN...CHERRY HILL... MOORESTOWN...MOUNT HOLLY...JACKSON...MILLVILLE...HAMMONTON... WHARTON STATE FOREST...WEST CHESTER...KENNETT SQUARE... NORRISTOWN...LANSDALE...MORRISVILLE...DOYLESTOWN 651 AM EDT FRI APR 24 2015 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY MORNING... * LOW TEMPERATURES...LOW 30S. * IMPACTS...POSSIBLE DAMAGE TO EARLY SEASON PLANTS THAT ARE UNPROTECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 4:04 AM EDT | Freeze Watch | PHI | Berks, Bucks, Chester, Montgomery | 12 hr |
| Apr 23, 4:04 AM EDT | Freeze Watch | PHI | Berks, Bucks, Chester, Lehigh, Montgomery, Northampton | 35 hr |
Nearby
Freeze Warnings in Pennsylvania, 2015Freeze Warnings in New Jersey, 2015Every freeze warning 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.