Alert archive / New Jersey / Heat Advisories in 2017
Heat Advisory 5, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this heat advisory at Aug 21, 2017, 3:14 PM EDT for 5 counties in Pennsylvania; 6 counties in New Jersey; New Castle County, Delaware. It took effect at Aug 22, 2017, 1:00 PM EDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Aug 21, 2017, 3:14 PM EDT (19:14 UTC)
- In effect from
- Aug 22, 2017, 1:00 PM EDT
- Expired
- Aug 22, 2017, 7:52 PM EDT
- In force
- 7 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties New Castle County, DE, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Mercer County, NJ, Middlesex 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), 58 km from the middle of the area, began a volume at 19:16 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, 7.2 hours before the alert went out and 207 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
- 5 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 1373 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
502 WWUS71 KPHI 211914 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 314 PM EDT Mon Aug 21 2017 ...INCREASING HEAT AND HUMIDITY TUESDAY... DEZ001-NJZ010-012-015-017>019-PAZ070-071-102-104-106-220715- /O.NEW.KPHI.HT.Y.0005.170822T1700Z-170823T0000Z/ New Castle-Somerset-Middlesex-Mercer-Gloucester-Camden- Northwestern Burlington-Delaware-Philadelphia-Eastern Chester- Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Somerville, New Brunswick, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 314 PM EDT Mon Aug 21 2017 ...HEAT ADVISORY IN EFFECT FROM 1 PM TO 8 PM EDT TUESDAY... The National Weather Service in Mount Holly has issued a Heat Advisory, which is in effect from 1 PM to 8 PM EDT Tuesday. * HEAT INDEX VALUES...Up to 100 due to temperatures around 90, and dewpoints in the lower 70s. * TIMING...Around 1 pm to 8 pm Tuesday. * 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. && $$
4 follow-up statements
579 WWUS71 KPHI 212358 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 758 PM EDT Mon Aug 21 2017 ...INCREASING HEAT AND HUMIDITY TUESDAY... DEZ001-NJZ010-012-015-017>019-PAZ070-071-102-104-106-221200- /O.CON.KPHI.HT.Y.0005.170822T1700Z-170823T0000Z/ New Castle-Somerset-Middlesex-Mercer-Gloucester-Camden- Northwestern Burlington-Delaware-Philadelphia-Eastern Chester- Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Somerville, New Brunswick, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 758 PM EDT Mon Aug 21 2017 ...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM TO 8 PM EDT TUESDAY... * HEAT INDEX VALUES...Around 100 degrees due to temperatures in the lower 90s, and dewpoints in the lower 70s. * Timing...Peaking during Tuesday afternoon. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of very hot and humid conditions is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids...stay in an air- conditioned room...stay out of the sun...and check up on relatives and neighbors. Take extra precautions...if you work or spend time outside. When possible...reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work...the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency...call 9 1 1. && $$
595 WWUS71 KPHI 220743 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 343 AM EDT Tue Aug 22 2017 ...INCREASING HEAT AND HUMIDITY today... DEZ001-NJZ010-012-015-017>019-PAZ070-071-102-104-106-222100- /O.CON.KPHI.HT.Y.0005.170822T1700Z-170823T0000Z/ New Castle-Somerset-Middlesex-Mercer-Gloucester-Camden- Northwestern Burlington-Delaware-Philadelphia-Eastern Chester- Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Somerville, New Brunswick, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 343 AM EDT Tue Aug 22 2017 ...HEAT ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM EDT THIS EVENING... * HEAT INDEX VALUES...From 98 to 103 due to temperatures in the upper 80s to middle 90s, and dewpoints in the lower to middle 70s. * Timing...This afternoon and early 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 very hot and humid conditions 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 late 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. && $$ CMS
520 WWUS71 KPHI 221904 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 304 PM EDT Tue Aug 22 2017 ...HOT AND HUMID CONDITIONS TODAY... DEZ001-NJZ010-012-015-017>019-PAZ070-071-102-104-106-230000- /O.CON.KPHI.HT.Y.0005.000000T0000Z-170823T0000Z/ New Castle-Somerset-Middlesex-Mercer-Gloucester-Camden- Northwestern Burlington-Delaware-Philadelphia-Eastern Chester- Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Somerville, New Brunswick, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 304 PM EDT Tue Aug 22 2017 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * HEAT INDEX VALUES...Up to 102 due to temperatures in the upper 80s, and dewpoints in the mid 70s. * Timing...Through early evening. * IMPACTS...The heat and humidity may cause heat stress during outdoor exertion or extended exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Heat Advisory means that a period of very hot and humid conditions is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Drink plenty of fluids...stay in an air- conditioned room...stay out of the sun...and check up on relatives and neighbors. Take extra precautions...if you work or spend time outside. When possible...reschedule strenuous activities to early morning or late evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work...the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency...call 9 1 1. && $$
606 WWUS71 KPHI 222352 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 752 PM EDT Tue Aug 22 2017 DEZ001-NJZ010-012-015-017>019-PAZ070-071-102-104-106-230100- /O.CAN.KPHI.HT.Y.0005.000000T0000Z-170823T0000Z/ New Castle-Somerset-Middlesex-Mercer-Gloucester-Camden- Northwestern Burlington-Delaware-Philadelphia-Eastern Chester- Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Somerville, New Brunswick, Trenton, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 752 PM EDT Tue Aug 22 2017 ...HEAT ADVISORY IS CANCELLED... The National Weather Service in Mount Holly has cancelled the Heat Advisory. $$ Iovino
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 5:44 PM EDT | Areal Flood Advisory | PHI | Berks | 4 hr |
| Aug 21, 6:20 PM EDT | Special Weather Statement | PHI | Lehigh | 55 min |
| Aug 21, 6:24 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 33 min |
| Aug 21, 3:35 AM EDT | Small Craft Advisory | PHI | 50 hr |
Nearby
Heat Advisories in New Jersey, 2017Heat Advisories in Pennsylvania, 2017Heat Advisories in Delaware, 2017Every heat advisory in 2017
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.