Alert archive / New Jersey / Excessive Heat Warnings in 2011
Excessive Heat Warning 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this excessive heat warning at May 31, 2011, 1:27 PM EDT for 4 states. It was in force for 31 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
- May 31, 2011, 1:27 PM EDT (17:27 UTC)
- Expired
- Jun 1, 2011, 8:00 PM EDT
- In force
- 31 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties New Castle County, DE, Cecil County, MD, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Mercer County, NJ, Delaware County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 68 km from the middle of the area, began a volume at 17:32 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, 5.5 hours before the alert went out and 88 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
- 963 J/kg
- Mixed-layer CIN
- -312 J/kg
- Mixed-layer LCL
- 1511 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
105 WWUS71 KPHI 311727 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 127 PM EDT TUE MAY 31 2011 DEZ001-MDZ008-NJZ015-017>019-PAZ067>071-011130- /O.NEW.KPHI.EH.W.0001.110531T1727Z-110602T0000Z/ NEW CASTLE-CECIL-MERCER-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...ELKTON...TRENTON... GLASSBORO...CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY... WEST CHESTER...NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 127 PM EDT TUE MAY 31 2011 ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM EDT WEDNESDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED AN EXCESSIVE HEAT WARNING...WHICH IS IN EFFECT UNTIL 8 PM EDT WEDNESDAY. * LOCATIONS...MUCH OF SOUTHEASTERN PENNSYLVANIA...NORTHERN DELAWARE AND WEST CENTRAL NEW JERSEY FROM TRENTON TO PHILADELPHIA...CAMDEN NEW JERSEY AND WILMINGTON DELAWARE. * HAZARDS...EARLY SEASON HEATWAVE...WITH THE MOST DANGEROUS CONDITIONS EACH AFTERNOON. * HEAT INDEX VALUES...IN THE UPPER 90S. * IMPACTS...THE ELDERLY...CHILDREN AND PETS ARE AT GREATEST RISK... ESPECIALLY WHERE THERE ISN'T ANY AIR CONDITIONING. THIS AFFECTS OUTDOOR ACTIVITIES...ESPECIALLY DURING THE AFTERNOON HOURS AND SLEEPING CAN BE DISRUPTED WHERE AIR CONDITIONING IS NOT AVAILABLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF DANGEROUSLY HOT TEMPERATURES WILL OCCUR. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE LIKELY. DRINK PLENTY OF FLUIDS...STAY IN AN AIR-CONDITIONED ROOM...STAY OUT OF THE SUN... AND CHECK UP ON RELATIVES AND NEIGHBORS. && $$ HEAVENER
4 follow-up statements
924 WWUS71 KPHI 311737 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 137 PM EDT TUE MAY 31 2011 MDZ008-311845- /O.CAN.KPHI.EH.W.0001.000000T0000Z-110602T0000Z/ CECIL- INCLUDING THE CITY OF...ELKTON 137 PM EDT TUE MAY 31 2011 ...EXCESSIVE HEAT WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS CANCELLED THE EXCESSIVE HEAT WARNING. DUE TO A SOFTWARE PROCESSING ERROR CECIL COUNTY WAS INCLUDED IN THE EXCESSIVE HEAT WARNING AND IT SHOULD NOT HAVE BEEN. WE APOLOGIZE FOR THE CONFUSION. $$ DEZ001-NJZ015-017>019-PAZ067>071-011145- /O.CON.KPHI.EH.W.0001.000000T0000Z-110602T0000Z/ NEW CASTLE-MERCER-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...TRENTON...GLASSBORO... CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...WEST CHESTER... NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 137 PM EDT TUE MAY 31 2011 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... AN EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY. * LOCATIONS...MUCH OF SOUTHEASTERN PENNSYLVANIA...NORTHERN DELAWARE AND WEST CENTRAL NEW JERSEY FROM TRENTON TO PHILADELPHIA...CAMDEN NEW JERSEY AND WILMINGTON DELAWARE. * HAZARDS...EARLY SEASON HEATWAVE...WITH THE MOST DANGEROUS CONDITIONS EACH AFTERNOON. * HEAT INDEX VALUES...IN THE MID 90S. * IMPACTS...THE ELDERLY...CHILDREN AND PETS ARE AT GREATEST RISK... ESPECIALLY WHERE THERE ISN'T ANY AIR CONDITIONING. THIS AFFECTS OUTDOOR ACTIVITIES...ESPECIALLY DURING THE AFTERNOON HOURS AND SLEEPING CAN BE DISRUPTED WHERE AIR CONDITIONING IS NOT AVAILABLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF DANGEROUSLY HOT TEMPERATURES WILL OCCUR. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE LIKELY. DRINK PLENTY OF FLUIDS...STAY IN AN AIR-CONDITIONED ROOM...STAY OUT OF THE SUN... AND CHECK UP ON RELATIVES AND NEIGHBORS. && $$ HEAVENER
841 WWUS71 KPHI 312303 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 703 PM EDT TUE MAY 31 2011 DEZ001-NJZ015-017>019-PAZ067>071-011200- /O.CON.KPHI.EH.W.0001.000000T0000Z-110602T0000Z/ NEW CASTLE-MERCER-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...TRENTON...GLASSBORO... CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...WEST CHESTER... NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 703 PM EDT TUE MAY 31 2011 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY... AN EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY. * LOCATIONS...MUCH OF SOUTHEASTERN PENNSYLVANIA...NORTHERN DELAWARE AND WEST CENTRAL NEW JERSEY INCLUDING TRENTON... PHILADELPHIA...CAMDEN AND WILMINGTON. * HAZARDS...EARLY SEASON HEATWAVE...WITH THE MOST DANGEROUS CONDITIONS DURING THE AFTERNOON. * HEAT INDEX VALUES...IN THE MID 90S. * IMPACTS...THE ELDERLY...THE INFIRM...CHILDREN AND PETS ARE AT GREATEST RISK...ESPECIALLY WHERE THERE ISN'T ANY AIR CONDITIONING. THIS AFFECTS OUTDOOR ACTIVITIES...ESPECIALLY DURING THE AFTERNOON HOURS...AND SLEEPING CAN BE DISRUPTED WHERE AIR CONDITIONING IS NOT AVAILABLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF DANGEROUSLY HOT TEMPERATURES WILL OCCUR. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE LIKELY. DRINK PLENTY OF FLUIDS...STAY IN AN AIR-CONDITIONED ROOM...STAY OUT OF THE SUN... AND CHECK UP ON RELATIVES AND NEIGHBORS. PLEASE DO NOT LEAVE ANYONE UNATTENDED IN A VEHICLE FOR ANY LENGTH OF TIME DURING THE DAY. THE RESULTS CAN BE FATAL. PLEASE MAKE SURE THAT YOUR PETS...AT A MINIMUM...HAVE ACCESS TO A WELL VENTILATED AND SHADED AREA AND PLENTY OF COOL WATER. THE MOST HUMANE THING TO DO IS TO BRING THEM INTO AN AIR-CONDITIONED ENVIRONMENT. && $$ HEAVENER/MPD
423 WWUS71 KPHI 010728 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 328 AM EDT WED JUN 1 2011 DEZ001-NJZ015-017>019-PAZ067>071-012000- /O.CON.KPHI.EH.W.0001.000000T0000Z-110602T0000Z/ NEW CASTLE-MERCER-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...TRENTON...GLASSBORO... CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...WEST CHESTER... NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 328 AM EDT WED JUN 1 2011 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... AN EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING. * LOCATIONS...MUCH OF SOUTHEASTERN PENNSYLVANIA...NORTHERN DELAWARE AND WEST CENTRAL NEW JERSEY INCLUDING TRENTON... PHILADELPHIA...CAMDEN AND WILMINGTON. * HAZARDS...EARLY SEASON HEATWAVE...WITH THE MOST DANGEROUS CONDITIONS DURING LATE THIS MORNING AND THIS AFTERNOON. * HEAT INDEX VALUES...IN THE MID 90S. * IMPACTS...THE ELDERLY...THE INFIRM...CHILDREN AND PETS ARE AT GREATEST RISK...ESPECIALLY WHERE THERE IS NO AIR CONDITIONING. THIS AFFECTS OUTDOOR ACTIVITIES...ESPECIALLY DURING THE AFTERNOON HOURS. SLEEPING CAN BE DISRUPTED WHERE AIR CONDITIONING IS NOT AVAILABLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF DANGEROUSLY HOT TEMPERATURES WILL OCCUR. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE LIKELY. DRINK PLENTY OF FLUIDS...STAY IN AN AIR-CONDITIONED ROOM...STAY OUT OF THE SUN... AND CHECK UP ON RELATIVES AND NEIGHBORS. PLEASE DO NOT LEAVE ANYONE UNATTENDED IN A VEHICLE FOR ANY LENGTH OF TIME DURING THE DAY. THE RESULTS CAN BE FATAL. PLEASE MAKE SURE THAT YOUR PETS...AT A MINIMUM...HAVE ACCESS TO A WELL VENTILATED AND SHADED AREA AND PLENTY OF COOL WATER. THE MOST HUMANE THING TO DO IS TO BRING THEM INTO AN AIR-CONDITIONED ENVIRONMENT. && $$
753 WWUS71 KPHI 011854 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 254 PM EDT WED JUN 1 2011 DEZ001-NJZ015-017>019-PAZ067>071-020000- /O.CON.KPHI.EH.W.0001.000000T0000Z-110602T0000Z/ NEW CASTLE-MERCER-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- INCLUDING THE CITIES OF...WILMINGTON...TRENTON...GLASSBORO... CAMDEN...CHERRY HILL...MOORESTOWN...MOUNT HOLLY...WEST CHESTER... NORRISTOWN...DOYLESTOWN...MEDIA...PHILADELPHIA 254 PM EDT WED JUN 1 2011 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... AN EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING. * LOCATIONS...MUCH OF SOUTHEASTERN PENNSYLVANIA...NORTHERN DELAWARE AND WEST CENTRAL NEW JERSEY INCLUDING TRENTON... PHILADELPHIA...CAMDEN AND WILMINGTON. * HAZARDS...EARLY SEASON HEATWAVE...WITH THE MOST DANGEROUS CONDITIONS INTO THE EARLY EVENING. * HEAT INDEX VALUES...IN THE MID 90S. * IMPACTS...THE ELDERLY...THE INFIRM...CHILDREN AND PETS ARE AT GREATEST RISK...ESPECIALLY WHERE THERE IS NO AIR CONDITIONING. THIS AFFECTS OUTDOOR ACTIVITIES...ESPECIALLY DURING THE AFTERNOON HOURS. SLEEPING CAN BE DISRUPTED WHERE AIR CONDITIONING IS NOT AVAILABLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... AN EXCESSIVE HEAT WARNING MEANS THAT A PROLONGED PERIOD OF DANGEROUSLY HOT TEMPERATURES WILL OCCUR. THE COMBINATION OF HOT TEMPERATURES AND HIGH HUMIDITY WILL COMBINE TO CREATE A DANGEROUS SITUATION IN WHICH HEAT ILLNESSES ARE LIKELY. DRINK PLENTY OF FLUIDS...STAY IN AN AIR-CONDITIONED ROOM...STAY OUT OF THE SUN... AND CHECK UP ON RELATIVES AND NEIGHBORS. PLEASE DO NOT LEAVE ANYONE UNATTENDED IN A VEHICLE FOR ANY LENGTH OF TIME DURING THE DAY. THE RESULTS CAN BE FATAL. PLEASE MAKE SURE THAT YOUR PETS...AT A MINIMUM...HAVE ACCESS TO A WELL VENTILATED AND SHADED AREA AND PLENTY OF COOL WATER. THE MOST HUMANE THING TO DO IS TO BRING THEM INTO AN AIR-CONDITIONED ENVIRONMENT. && $$
Nearby
Excessive Heat Warnings in New Jersey, 2011Excessive Heat Warnings in Pennsylvania, 2011Excessive Heat Warnings in Maryland, 2011Every excessive heat warning in 2011
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.