Alert archive / New Jersey / Excessive Heat Warnings in 2024
Excessive Heat Warning 2, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this excessive heat warning at Jul 6, 2024, 3:05 AM EDT for 4 states. It was in force for 17 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
- Jul 6, 2024, 3:05 AM EDT (07:05 UTC)
- Expired
- Jul 6, 2024, 8:00 PM EDT
- In force
- 17 hr
- Issued by
- NWS Philadelphia/Mount Holly
All 23 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, 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, Somerset County, NJ, Bucks County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 71 km from the middle of the area, began a volume at 07:08 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 00:00Z, 7.1 hours before the alert went out and 193 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
- 1491 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 1055 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
246 WWUS71 KPHI 060705 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 305 AM EDT Sat Jul 6 2024 DEZ001-NJZ015>019-PAZ070-071-104-106-061915- /O.UPG.KPHI.HT.Y.0004.000000T0000Z-240707T0000Z/ /O.NEW.KPHI.EH.W.0002.240706T0705Z-240707T0000Z/ New Castle-Mercer-Salem-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Montgomery-Lower Bucks- Including the cities of Philadelphia, Glassboro, Mount Holly, Doylestown, Morrisville, Cherry Hill, Media, Camden, Lansdale, Pennsville, Norristown, Moorestown, Wilmington, and Trenton 305 AM EDT Sat Jul 6 2024 ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Dangerously hot conditions with heat index values up to 108. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, Northwestern Burlington, and Salem Counties. In Pennsylvania, Delaware, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ DEZ002-003-MDZ012-015-019-020-NJZ021>023-061915- /O.UPG.KPHI.HT.Y.0004.000000T0000Z-240707T0000Z/ /O.NEW.KPHI.EH.W.0002.240706T0705Z-240707T0000Z/ Kent-Inland Sussex-Kent MD-Queen Annes-Talbot-Caroline-Cumberland- Atlantic-Cape May- Including the cities of Georgetown, Centreville, Millville, Cape May Court House, Denton, Easton, Dover, Hammonton, and Chestertown 305 AM EDT Sat Jul 6 2024 ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Dangerously hot conditions with heat index values up to 110. * WHERE...In Delaware, Kent and Inland Sussex Counties. In Maryland, Caroline, Kent MD, Queen Annes, and Talbot Counties. In New Jersey, Atlantic, Cape May, and Cumberland Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ NJZ010-012-061915- /O.UPG.KPHI.HT.Y.0005.000000T0000Z-240707T0000Z/ /O.NEW.KPHI.EH.W.0002.240706T0705Z-240707T0000Z/ Somerset-Middlesex- Including the cities of New Brunswick and Somerville 305 AM EDT Sat Jul 6 2024 ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Dangerously hot conditions with heat index values up to 109. * WHERE...Middlesex and Somerset Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ NJZ013-020-027-061915- /O.UPG.KPHI.HT.Y.0004.000000T0000Z-240707T0000Z/ /O.NEW.KPHI.EH.W.0002.240706T0705Z-240707T0000Z/ Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Wharton State Forest, Jackson, and Freehold 305 AM EDT Sat Jul 6 2024 ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Dangerously hot conditions with heat index values up to 110. * WHERE...Western Monmouth, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ NJZ001-007-009-PAZ060>062-101-103-105-061915- /O.CON.KPHI.HT.Y.0004.000000T0000Z-240707T0000Z/ Sussex-Warren-Hunterdon-Berks-Lehigh-Northampton-Western Chester- Western Montgomery-Upper Bucks- Including the cities of Chalfont, Collegeville, Flemington, Allentown, Washington, Bethlehem, Newton, Oxford, Easton, Pottstown, Perkasie, Honey Brook, and Reading 305 AM EDT Sat Jul 6 2024 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 103. * WHERE...In New Jersey, Sussex, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ NJZ008-061915- /O.CON.KPHI.HT.Y.0004.000000T0000Z-240707T0000Z/ Morris- Including the cities of Morristown 305 AM EDT Sat Jul 6 2024 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 104. * WHERE...Morris County. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. Monitor the latest forecasts and warnings for updates. && $$ PAZ102-061915- /O.CON.KPHI.HT.Y.0004.000000T0000Z-240707T0000Z/ Eastern Chester- Including the cities of West Chester and Kennett Square 305 AM EDT Sat Jul 6 2024 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 103. * WHERE...Eastern Chester County. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. Monitor the latest forecasts and warnings for updates. && $$ SFJ
2 follow-up statements
106 WWUS71 KPHI 061855 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 255 PM EDT Sat Jul 6 2024 DEZ001-NJZ010-012-015>019-PAZ070-071-104-106-070000- /O.CON.KPHI.EH.W.0002.000000T0000Z-240707T0000Z/ New Castle-Somerset-Middlesex-Mercer-Salem-Gloucester-Camden- Northwestern Burlington-Delaware-Philadelphia-Eastern Montgomery- Lower Bucks- Including the cities of Pennsville, Doylestown, Norristown, New Brunswick, Camden, Mount Holly, Morrisville, Lansdale, Philadelphia, Wilmington, Glassboro, Moorestown, Trenton, Cherry Hill, Media, and Somerville 255 PM EDT Sat Jul 6 2024 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Dangerously hot conditions with heat index values up to 106. * WHERE...Portions of northern Delaware, central, northern, and southern New Jersey, and southeast Pennsylvania. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ DEZ002-003-MDZ012-015-019-020-NJZ021>023-070000- /O.CON.KPHI.EH.W.0002.000000T0000Z-240707T0000Z/ Kent-Inland Sussex-Kent MD-Queen Annes-Talbot-Caroline-Cumberland- Atlantic-Cape May- Including the cities of Cape May Court House, Dover, Denton, Hammonton, Georgetown, Chestertown, Millville, Easton, and Centreville 255 PM EDT Sat Jul 6 2024 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Dangerously hot conditions with heat index values up to 106. * WHERE...In Delaware, Kent and Inland Sussex Counties. In Maryland, Caroline, Kent MD, Queen Annes, and Talbot Counties. In New Jersey, Atlantic, Cape May, and Cumberland Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ NJZ013-020-027-070000- /O.CON.KPHI.EH.W.0002.000000T0000Z-240707T0000Z/ Western Monmouth-Ocean-Southeastern Burlington- Including the cities of Freehold, Jackson, and Wharton State Forest 255 PM EDT Sat Jul 6 2024 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Dangerously hot conditions with heat index values up to 106. * WHERE...Western Monmouth, Ocean, and Southeastern Burlington Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ NJZ001-007-009-PAZ060>062-101-103-105-070000- /O.CON.KPHI.HT.Y.0004.000000T0000Z-240707T0000Z/ Sussex-Warren-Hunterdon-Berks-Lehigh-Northampton-Western Chester- Western Montgomery-Upper Bucks- Including the cities of Bethlehem, Washington, Chalfont, Perkasie, Reading, Newton, Oxford, Easton, Honey Brook, Allentown, Flemington, Pottstown, and Collegeville 255 PM EDT Sat Jul 6 2024 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 100. * WHERE...In New Jersey, Sussex, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ NJZ008-070000- /O.CON.KPHI.HT.Y.0004.000000T0000Z-240707T0000Z/ Morris- Including the cities of Morristown 255 PM EDT Sat Jul 6 2024 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 100. * WHERE...Morris County. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. Monitor the latest forecasts and warnings for updates. && $$ PAZ102-070000- /O.CON.KPHI.HT.Y.0004.000000T0000Z-240707T0000Z/ Eastern Chester- Including the cities of Kennett Square and West Chester 255 PM EDT Sat Jul 6 2024 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 101. * WHERE...Eastern Chester County. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. Monitor the latest forecasts and warnings for updates. && $$ DeSilva
515 WWUS71 KPHI 070012 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 812 PM EDT Sat Jul 6 2024 DEZ001>003-MDZ012-015-019-020-NJZ010-012-013-015>023-027-PAZ070-071- 104-106-070115- /O.EXP.KPHI.EH.W.0002.000000T0000Z-240707T0000Z/ New Castle-Kent-Inland Sussex-Kent MD-Queen Annes-Talbot-Caroline- Somerset-Middlesex-Western Monmouth-Mercer-Salem-Gloucester- Camden-Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May- Southeastern Burlington-Delaware-Philadelphia-Eastern Montgomery- Lower Bucks- Including the cities of Media, Jackson, Lansdale, Dover, Easton, Wilmington, Trenton, Denton, Hammonton, Somerville, New Brunswick, Mount Holly, Cape May Court House, Wharton State Forest, Norristown, Doylestown, Centreville, Chestertown, Georgetown, Freehold, Philadelphia, Morrisville, Cherry Hill, Camden, Millville, Moorestown, Glassboro, and Pennsville 812 PM EDT Sat Jul 6 2024 ...EXCESSIVE HEAT WARNING HAS EXPIRED... The threat has ended. $$ NJZ001-007>009-PAZ060>062-101>103-105-070115- /O.EXP.KPHI.HT.Y.0004.000000T0000Z-240707T0000Z/ Sussex-Warren-Morris-Hunterdon-Berks-Lehigh-Northampton-Western Chester-Eastern Chester-Western Montgomery-Upper Bucks- Including the cities of Bethlehem, Pottstown, Perkasie, Honey Brook, Flemington, Oxford, Reading, West Chester, Chalfont, Allentown, Easton, Newton, Morristown, Collegeville, Washington, and Kennett Square 812 PM EDT Sat Jul 6 2024 ...HEAT ADVISORY HAS EXPIRED... The threat has ended. $$ Wunderlin
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 4:04 AM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex | 14 min |
| Jul 6, 9:05 AM EDT | Marine Dense Fog Advisory | PHI | 3 hr | |
| Jul 6, 2:58 PM EDT | Special Marine Warning | PHI | 41 min | |
| Jul 6, 4:13 PM EDT | Special Marine Warning | PHI | 49 min |
Nearby
Excessive Heat Warnings in New Jersey, 2024Excessive Heat Warnings in Pennsylvania, 2024Excessive Heat Warnings in Maryland, 2024Every excessive heat warning in 2024
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.