Alert archive / New Jersey / Heat Advisories in 2018
Heat Advisory 5, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this heat advisory at Aug 7, 2018, 3:31 PM EDT for 5 counties in Pennsylvania; 10 counties in New Jersey; New Castle County, Delaware. It took effect at Aug 8, 2018, 12:00 PM EDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Aug 7, 2018, 3:31 PM EDT (19:31 UTC)
- In effect from
- Aug 8, 2018, 12:00 PM EDT
- Expired
- Aug 8, 2018, 6:00 PM EDT
- In force
- 6 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties New Castle County, DE, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Somerset County, NJ, Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 49 km from the middle of the area, began a volume at 19:31 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 12:00Z, 7.5 hours before the alert went out and 192 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
- 1115 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 982 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
747 WWUS71 KPHI 071931 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 331 PM EDT Tue Aug 7 2018 DEZ001-NJZ008>010-012-013-015-017>020-027-PAZ070-071-101>106- 080815- /O.NEW.KPHI.HT.Y.0005.180808T1600Z-180808T2200Z/ /O.CON.KPHI.HT.Y.0004.000000T0000Z-180807T2300Z/ New Castle-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth- Mercer-Gloucester-Camden-Northwestern Burlington-Ocean- Southeastern Burlington-Delaware-Philadelphia-Western Chester- Eastern Chester-Western Montgomery-Eastern Montgomery-Upper Bucks- Lower Bucks- Including the cities of Wilmington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Wharton State Forest, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 331 PM EDT Tue Aug 7 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING... ...HEAT ADVISORY IN EFFECT FROM NOON TO 6 PM EDT WEDNESDAY... The National Weather Service in Mount Holly has issued a Heat Advisory, which is in effect from noon to 6 PM EDT Wednesday. * HEAT INDEX VALUES...Around 100 degrees, due to temperatures in the lower 90s and dewpoints in the mid 70s. * TIMING...The heat index values will drop late this afternoon and this evening, then peak again Wednesday afternoon. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. 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...if you work or spend time outside. When possible...reschedule strenuous activities to mornings or evenings. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work...the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency...call 9 1 1. $$ NJZ001-007-PAZ060>062-072300- /O.CON.KPHI.HT.Y.0004.000000T0000Z-180807T2300Z/ Sussex-Warren-Berks-Lehigh-Northampton- Including the cities of Newton, Washington, Reading, Allentown, Bethlehem, and Easton 331 PM EDT Tue Aug 7 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING... * HEAT INDEX VALUES...Around 100 degrees, due to temperatures in the lower 90s and dewpoints in the lower 70s. * TIMING...The heat index values will drop into early this evening. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids...stay in an air-conditioned room...stay out of the sun...and check up on relatives and neighbors. Take extra precautions...if you work or spend time outside. When possible...reschedule strenuous activities to the evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work...the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency...call 9 1 1. && $$ Gorse
5 follow-up statements
163 WWUS71 KPHI 072230 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 630 PM EDT Tue Aug 7 2018 DEZ001-NJZ008>010-012-013-015-017>020-027-PAZ070-071-101>106- 081015- /O.CAN.KPHI.HT.Y.0004.000000T0000Z-180807T2300Z/ /O.CON.KPHI.HT.Y.0005.180808T1600Z-180808T2200Z/ New Castle-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth- Mercer-Gloucester-Camden-Northwestern Burlington-Ocean- Southeastern Burlington-Delaware-Philadelphia-Western Chester- Eastern Chester-Western Montgomery-Eastern Montgomery-Upper Bucks- Lower Bucks- Including the cities of Wilmington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Wharton State Forest, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 630 PM EDT Tue Aug 7 2018 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TO 6 PM EDT WEDNESDAY... ...HEAT ADVISORY FOR TODAY IS CANCELLED... The National Weather Service in Mount Holly has cancelled the Heat Advisory for today. A heat Advisory will be in effect for Wednesday afternoon. * HEAT INDEX VALUES...Around 100 due to temperatures in the lower 90s, and dewpoints in the mid 70s. * TIMING...Wednesday afternoon. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. 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...if you work or spend time outside. When possible...reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work...the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency...call 9 1 1. && $$ NJZ001-007-PAZ060>062-072330- /O.CAN.KPHI.HT.Y.0004.000000T0000Z-180807T2300Z/ Sussex-Warren-Berks-Lehigh-Northampton- Including the cities of Newton, Washington, Reading, Allentown, Bethlehem, and Easton 630 PM EDT Tue Aug 7 2018 ...HEAT ADVISORY IS CANCELLED... The National Weather Service in Mount Holly has cancelled the Heat Advisory. $$
499 WWUS71 KPHI 080728 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 328 AM EDT Wed Aug 8 2018 DEZ001-NJZ008>010-012-013-015-017>020-027-PAZ070-071-101>106- 082000- /O.CON.KPHI.HT.Y.0005.180808T1600Z-180808T2200Z/ New Castle-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth- Mercer-Gloucester-Camden-Northwestern Burlington-Ocean- Southeastern Burlington-Delaware-Philadelphia-Western Chester- Eastern Chester-Western Montgomery-Eastern Montgomery-Upper Bucks- Lower Bucks- Including the cities of Wilmington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Wharton State Forest, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 328 AM EDT Wed Aug 8 2018 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 6 PM EDT THIS EVENING... * HEAT INDEX VALUES...Near 100 due to temperatures in the lower 90s, and dewpoints in the lower 70s. * TIMING...the highest heat index values are expected this afternoon. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. 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...if you work or spend time outside. When possible...reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work...the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency...call 9 1 1. && $$
441 WWUS71 KPHI 081335 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 935 AM EDT Wed Aug 8 2018 DEZ001-NJZ008>010-012-013-015-017>020-027-PAZ070-071-101>106- 082200- /O.CON.KPHI.HT.Y.0005.180808T1600Z-180808T2200Z/ New Castle-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth- Mercer-Gloucester-Camden-Northwestern Burlington-Ocean- Southeastern Burlington-Delaware-Philadelphia-Western Chester- Eastern Chester-Western Montgomery-Eastern Montgomery-Upper Bucks- Lower Bucks- Including the cities of Wilmington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Wharton State Forest, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 935 AM EDT Wed Aug 8 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 6 PM EDT THIS EVENING... * HEAT INDEX VALUES...Around 100 degrees, due to temperatures in the lower 90s and dewpoints in the lower to mid 70s. * TIMING...Heat indices will peak around mid-afternoon. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. 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...if you work or spend time outside. When possible...reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work...the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency...call 9 1 1. && $$
711 WWUS71 KPHI 081942 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 342 PM EDT Wed Aug 8 2018 DEZ001-NJZ008>010-012-013-015-017>020-027-PAZ070-071-101>106- 082200- /O.CON.KPHI.HT.Y.0005.000000T0000Z-180808T2200Z/ New Castle-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth- Mercer-Gloucester-Camden-Northwestern Burlington-Ocean- Southeastern Burlington-Delaware-Philadelphia-Western Chester- Eastern Chester-Western Montgomery-Eastern Montgomery-Upper Bucks- Lower Bucks- Including the cities of Wilmington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Wharton State Forest, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 342 PM EDT Wed Aug 8 2018 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 6 PM EDT THIS EVENING... * HEAT INDEX VALUES...Near 100 degrees, due to temperatures in the lower 90s and dewpoints in the lower 70s. * TIMING...Heat indices have mostly peaked and will therefore drop through this evening. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. 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...if you work or spend time outside. When possible...reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work...the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency...call 9 1 1. && $$
571 WWUS71 KPHI 082157 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 557 PM EDT Wed Aug 8 2018 DEZ001-NJZ008>010-012-013-015-017>020-027-PAZ070-071-101>106- 082300- /O.EXP.KPHI.HT.Y.0005.000000T0000Z-180808T2200Z/ New Castle-Morris-Hunterdon-Somerset-Middlesex-Western Monmouth- Mercer-Gloucester-Camden-Northwestern Burlington-Ocean- Southeastern Burlington-Delaware-Philadelphia-Western Chester- Eastern Chester-Western Montgomery-Eastern Montgomery-Upper Bucks- Lower Bucks- Including the cities of Wilmington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Wharton State Forest, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 557 PM EDT Wed Aug 8 2018 ...HEAT ADVISORY WILL EXPIRE AT 6 PM EDT THIS EVENING... Temperatures are dropping off following daytime highs with heat index values falling below advisory levels. $$ Fitzsimmons
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 12:19 PM EDT | Heat Advisory | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more | 6 hr |
| Aug 7, 4:07 PM EDT | Special Weather Statement | PHI | Monroe | 38 min |
| Aug 7, 4:44 PM EDT | Special Weather Statement | PHI | Monroe | 61 min |
| Aug 7, 4:48 PM EDT | Special Weather Statement | PHI | Lehigh | 57 min |
| Aug 7, 5:32 PM EDT | Special Weather Statement | PHI | Berks | 58 min |
| Aug 7, 5:41 PM EDT | Special Weather Statement | PHI | Lehigh | 49 min |
| Aug 7, 6:21 PM EDT | Special Weather Statement | PHI | Lehigh | 54 min |
| Aug 7, 6:25 PM EDT | Special Weather Statement | PHI | Berks | 65 min |
| Aug 7, 2:24 PM EDT | Areal Flood Advisory | PHI | Sussex | 78 min |
| Aug 7, 4:27 PM EDT | Special Weather Statement | PHI | Sussex | 48 min |
| Aug 7, 5:07 PM EDT | Special Weather Statement | PHI | Sussex | 53 min |
| Aug 7, 5:46 PM EDT | Special Weather Statement | PHI | Morris, Sussex | 59 min |
| Aug 7, 2:13 PM EDT | Special Weather Statement | PHI | Sussex | 47 min |
Nearby
Heat Advisories in New Jersey, 2018Heat Advisories in Pennsylvania, 2018Heat Advisories in Delaware, 2018Every heat advisory in 2018
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.