Alert archive / Maryland / Heat Advisories in 2021
Heat Advisory 6, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this heat advisory at Jul 11, 2021, 6:18 PM EDT for 4 states. It took effect at Jul 12, 2021, 11:00 AM EDT. It was in force for 33 hr.
The area
The counties it named.
The facts
- Issued
- Jul 11, 2021, 6:18 PM EDT (22:18 UTC)
- In effect from
- Jul 12, 2021, 11:00 AM EDT
- Expired
- Jul 13, 2021, 8:00 PM EDT
- In force
- 33 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties New Castle County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Ocean County, NJ, Bucks County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 89 km from the middle of the area, began a volume at 22:22 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 12:00Z, 10.3 hours before the alert went out and 189 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
- 44 J/kg
- Mixed-layer CIN
- -139 J/kg
- Mixed-layer LCL
- 1150 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
405 WWUS71 KPHI 112218 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 618 PM EDT Sun Jul 11 2021 DEZ001-NJZ017>019-PAZ070-071-104-106-121130- /O.NEW.KPHI.HT.Y.0006.210712T1500Z-210713T0000Z/ New Castle-Gloucester-Camden-Northwestern Burlington-Delaware- Philadelphia-Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, Norristown, Lansdale, Morrisville, and Doylestown 618 PM EDT Sun Jul 11 2021 ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT MONDAY... * WHAT...Heat index values up to 101 expected. * WHERE...In New Jersey, Gloucester, Camden and Northwestern Burlington. In Pennsylvania, Delaware, Philadelphia, Eastern Montgomery and Lower Bucks. In Delaware, New Castle. * WHEN...From 11 AM to 8 PM EDT Monday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. 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. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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. && $$ Staarmann
6 follow-up statements
782 WWUS71 KPHI 120716 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 316 AM EDT Mon Jul 12 2021 DEZ001-NJZ017>019-PAZ070-071-104-106-122200- /O.EXT.KPHI.HT.Y.0006.210712T1500Z-210714T0000Z/ New Castle-Gloucester-Camden-Northwestern Burlington-Delaware- Philadelphia-Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, Norristown, Lansdale, Morrisville, and Doylestown 316 AM EDT Mon Jul 12 2021 ...HEAT ADVISORY NOW IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT TUESDAY... * WHAT...Heat index values up to 102 expected. * WHERE...In New Jersey, Gloucester, Northwestern Burlington and Camden. In Pennsylvania, Delaware, Philadelphia, Eastern Montgomery and Lower Bucks. In Delaware, New Castle. * WHEN...From 11 AM this morning to 8 PM EDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MPS
691 WWUS71 KPHI 121402 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 1002 AM EDT Mon Jul 12 2021 NJZ020-027-130000- /O.EXB.KPHI.HT.Y.0006.210712T1500Z-210713T0000Z/ Ocean-Southeastern Burlington- Including the cities of Jackson and Wharton State Forest 1002 AM EDT Mon Jul 12 2021 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values between 100 to 105 expected. * WHERE...Ocean and Southeastern Burlington. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. 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. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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. && $$ MDZ012-015-019-020-130315- /O.EXA.KPHI.HT.Y.0006.210712T1500Z-210714T0000Z/ Kent MD-Queen Annes-Talbot-Caroline- Including the cities of Chestertown, Centreville, Easton, and Denton 1002 AM EDT Mon Jul 12 2021 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT TUESDAY... * WHAT...Heat index values between 105 to 110 expected. * WHERE...Kent MD, Queen Annes, Talbot and Caroline. * WHEN...From 11 AM this morning to 8 PM EDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ DEZ001-NJZ017>019-PAZ070-071-104-106-130315- /O.CON.KPHI.HT.Y.0006.210712T1500Z-210714T0000Z/ New Castle-Gloucester-Camden-Northwestern Burlington-Delaware- Philadelphia-Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, Norristown, Lansdale, Morrisville, and Doylestown 1002 AM EDT Mon Jul 12 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY... * WHAT...Heat index values between 100 to 105 expected. * WHERE...In New Jersey, Gloucester, Northwestern Burlington and Camden. In Pennsylvania, Delaware, Philadelphia, Eastern Montgomery and Lower Bucks. In Delaware, New Castle. * WHEN...From 11 AM this morning to 8 PM EDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. 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. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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. && $$
040 WWUS71 KPHI 122358 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 758 PM EDT Mon Jul 12 2021 NJZ020-027-130100- /O.EXP.KPHI.HT.Y.0006.000000T0000Z-210713T0000Z/ Ocean-Southeastern Burlington- Including the cities of Jackson and Wharton State Forest 758 PM EDT Mon Jul 12 2021 ...HEAT ADVISORY WILL EXPIRE AT 8 PM EDT THIS EVENING... Temperatures are dropping with the loss of daytime heating and conditions are not expected to reach Heat Advisory levels on Tuesday. Therefore, the Heat Advisory will be allowed to expire.. $$ DEZ001-NJZ017>019-PAZ070-071-104-106-131300- /O.CON.KPHI.HT.Y.0006.000000T0000Z-210714T0000Z/ New Castle-Gloucester-Camden-Northwestern Burlington-Delaware- Philadelphia-Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, Norristown, Lansdale, Morrisville, and Doylestown 758 PM EDT Mon Jul 12 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY... * WHAT...Heat index values between 100 to 105 expected. * WHERE...In New Jersey, Gloucester, Northwestern Burlington and Camden. In Pennsylvania, Delaware, Philadelphia, Eastern Montgomery and Lower Bucks. In Delaware, New Castle. * WHEN...Until 8 PM EDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. 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. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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. && $$ MDZ012-015-019-020-131300- /O.CON.KPHI.HT.Y.0006.000000T0000Z-210714T0000Z/ Kent MD-Queen Annes-Talbot-Caroline- Including the cities of Chestertown, Centreville, Easton, and Denton 758 PM EDT Mon Jul 12 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT TUESDAY... * WHAT...Heat index values between 105 to 110 expected. * WHERE...Talbot, Kent MD, Queen Annes and Caroline. * WHEN...Until 8 PM EDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
702 WWUS71 KPHI 130745 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 345 AM EDT Tue Jul 13 2021 DEZ001-NJZ017>019-PAZ070-071-104-106-132045- /O.CON.KPHI.HT.Y.0006.000000T0000Z-210714T0000Z/ New Castle-Gloucester-Camden-Northwestern Burlington-Delaware- Philadelphia-Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, Norristown, Lansdale, Morrisville, and Doylestown 345 AM EDT Tue Jul 13 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 102. * WHERE...In New Jersey, Gloucester, Northwestern Burlington and Camden. In Pennsylvania, Delaware, Philadelphia, Eastern Montgomery and Lower Bucks. In Delaware, New Castle. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. 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. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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. && $$ MDZ012-015-019-020-132045- /O.CON.KPHI.HT.Y.0006.000000T0000Z-210714T0000Z/ Kent MD-Queen Annes-Talbot-Caroline- Including the cities of Chestertown, Centreville, Easton, and Denton 345 AM EDT Tue Jul 13 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 106. * WHERE...Talbot, Kent MD, Queen Annes and Caroline. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ Davis
366 WWUS71 KPHI 131944 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 344 PM EDT Tue Jul 13 2021 NJZ019-PAZ106-140015- /O.NEW.KPHI.FG.Y.0004.210714T0600Z-210714T1300Z/ /O.CON.KPHI.HT.Y.0006.000000T0000Z-210714T0000Z/ Northwestern Burlington-Lower Bucks- Including the cities of Moorestown, Mount Holly, Morrisville, and Doylestown 344 PM EDT Tue Jul 13 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...DENSE FOG ADVISORY IN EFFECT FROM 2 AM TO 9 AM EDT WEDNESDAY... * WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Heat Advisory, heat index values up to 100. * WHERE...In New Jersey, Northwestern Burlington. In Pennsylvania, Lower Bucks. * WHEN...For the Dense Fog Advisory, from 2 AM to 9 AM EDT Wednesday. For the Heat Advisory, until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. Hazardous driving conditions due to low visibility. 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. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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. If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ NJZ001-007>010-012>015-020-026-027-PAZ055-062-105-140015- /O.NEW.KPHI.FG.Y.0004.210714T0600Z-210714T1300Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Ocean-Coastal Ocean- Southeastern Burlington-Monroe-Northampton-Upper Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Jackson, Long Beach Island, Wharton State Forest, Stroudsburg, Bethlehem, Easton, Chalfont, and Perkasie 344 PM EDT Tue Jul 13 2021 ...DENSE FOG ADVISORY IN EFFECT FROM 2 AM TO 9 AM EDT WEDNESDAY... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of central, northern, northwest and southern New Jersey and east central, northeast and southeast Pennsylvania. * WHEN...From 2 AM to 9 AM EDT Wednesday. * IMPACTS...Hazardous driving conditions due to low visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ DEZ001-NJZ017-018-PAZ070-071-104-140000- /O.CON.KPHI.HT.Y.0006.000000T0000Z-210714T0000Z/ New Castle-Gloucester-Camden-Delaware-Philadelphia- Eastern Montgomery- Including the cities of Wilmington, Glassboro, Camden, Cherry Hill, Media, Philadelphia, Norristown, and Lansdale 344 PM EDT Tue Jul 13 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 103. * WHERE...In Pennsylvania, Delaware, Philadelphia and Eastern Montgomery. In New Jersey, Gloucester and Camden. In Delaware, New Castle. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. 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. Young children and pets should never be left unattended in vehicles under any circumstances. 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 lightweight and loose fitting clothing when possible. 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. && $$ MDZ012-015-019-020-140000- /O.CON.KPHI.HT.Y.0006.000000T0000Z-210714T0000Z/ Kent MD-Queen Annes-Talbot-Caroline- Including the cities of Chestertown, Centreville, Easton, and Denton 344 PM EDT Tue Jul 13 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 108. * WHERE...Caroline, Talbot, Kent MD and Queen Annes. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ Robertson/Staarmann
046 WWUS71 KPHI 132353 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 753 PM EDT Tue Jul 13 2021 NJZ019-PAZ106-141300- /O.EXP.KPHI.HT.Y.0006.000000T0000Z-210714T0000Z/ /O.CON.KPHI.FG.Y.0004.210714T0600Z-210714T1300Z/ Northwestern Burlington-Lower Bucks- Including the cities of Moorestown, Mount Holly, Morrisville, and Doylestown 753 PM EDT Tue Jul 13 2021 ...DENSE FOG ADVISORY REMAINS IN EFFECT FROM 2 AM TO 9 AM EDT WEDNESDAY... ...HEAT ADVISORY WILL EXPIRE AT 8 PM EDT THIS EVENING... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Pennsylvania, lower Bucks County. In New Jersey, northwestern Burlington County. * WHEN...From 2 AM to 9 AM EDT Wednesday. * IMPACTS...Hazardous driving conditions due to low visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ DEZ001-NJZ017-018-PAZ070-071-104-140100- /O.EXP.KPHI.HT.Y.0006.000000T0000Z-210714T0000Z/ New Castle-Gloucester-Camden-Delaware-Philadelphia- Eastern Montgomery- Including the cities of Wilmington, Glassboro, Camden, Cherry Hill, Media, Philadelphia, Norristown, and Lansdale 753 PM EDT Tue Jul 13 2021 ...HEAT ADVISORY WILL EXPIRE AT 8 PM EDT THIS EVENING... Heat indices are now below advisory criteria. Therefore, the advisory will be allowed to expire. $$ MDZ012-015-019-020-140100- /O.EXP.KPHI.HT.Y.0006.000000T0000Z-210714T0000Z/ Kent MD-Queen Annes-Talbot-Caroline- Including the cities of Chestertown, Centreville, Easton, and Denton 753 PM EDT Tue Jul 13 2021 ...HEAT ADVISORY WILL EXPIRE AT 8 PM EDT THIS EVENING... Heat indices are now below advisory criteria. Therefore, the advisory will be allowed to expire. $$ NJZ001-007>010-012>015-020-026-027-PAZ055-062-105-141300- /O.CON.KPHI.FG.Y.0004.210714T0600Z-210714T1300Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Ocean-Coastal Ocean- Southeastern Burlington-Monroe-Northampton-Upper Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Jackson, Long Beach Island, Wharton State Forest, Stroudsburg, Bethlehem, Easton, Chalfont, and Perkasie 753 PM EDT Tue Jul 13 2021 ...DENSE FOG ADVISORY REMAINS IN EFFECT FROM 2 AM TO 9 AM EDT WEDNESDAY... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of central, northern, northwest, and southern New Jersey and east central, northeast, and southeast Pennsylvania. * WHEN...From 2 AM to 9 AM EDT Wednesday. * IMPACTS...Hazardous driving conditions due to low visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. && $$ CMS
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 3:45 PM EDT | Flash Flood Watch | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 5 more | 36 hr |
Nearby
Heat Advisories in Maryland, 2021Heat Advisories in New Jersey, 2021Heat Advisories in Pennsylvania, 2021Every heat advisory in 2021
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.