191 WWUS71 KPHI 292117 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 517 PM EDT Mon Jun 29 2026 DEZ001-NJZ015>019-PAZ070-071-102-104-106-301000- /O.CON.KPHI.XH.A.0001.260701T1600Z-260705T0000Z/ New Castle-Mercer-Salem-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Lansdale, Glassboro, Cherry Hill, Mount Holly, Kennett Square, Norristown, Morrisville, Pennsville, Media, Doylestown, Philadelphia, Camden, West Chester, Moorestown, Trenton, and Wilmington 517 PM EDT Mon Jun 29 2026 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH SATURDAY EVENING... * WHAT...Dangerously hot conditions with heat index values up to 110 degrees possible. * WHERE...Portions of northern Delaware, central and southern New Jersey, and southeast Pennsylvania. * WHEN...From Wednesday afternoon through Saturday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Very warm low temperatures in the mid 70s to low 80s at night will not offer any relief from the heat. This combined with multiple days of near record breaking temperatures will exacerbate the impacts from the heat and humidity. 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. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. If you do not have air conditioning in your home or lack shelter, you can call 211 or visit your county or state health department website for assistance locating appropriate shelter from the heat. && $$ NJZ001-007>009-PAZ060>062-101-103-105-301000- /O.CON.KPHI.XH.A.0001.260701T1600Z-260705T0000Z/ Sussex-Warren-Morris-Hunterdon-Berks-Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Reading, Morristown, Easton, Washington, Bethlehem, Honey Brook, Chalfont, Newton, Perkasie, Pottstown, Allentown, Flemington, Collegeville, and Oxford 517 PM EDT Mon Jun 29 2026 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH SATURDAY EVENING... * WHAT...Dangerously hot conditions with heat index values up to 105 degrees possible. * WHERE...In New Jersey, Morris, Sussex, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...From Wednesday afternoon through Saturday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Very warm low temperatures in the low to mid 70s at night will not offer any relief from the heat. This combined with multiple days of near record breaking temperatures will exacerbate the impacts from the heat and humidity. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. && $$ NJZ010-012>014-020-027-301000- /O.CON.KPHI.XH.A.0001.260701T1600Z-260705T0000Z/ Somerset-Middlesex-Western Monmouth-Eastern Monmouth-Ocean- Southeastern Burlington- Including the cities of Somerville, Jackson, Wharton State Forest, Freehold, New Brunswick, and Sandy Hook 517 PM EDT Mon Jun 29 2026 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH SATURDAY EVENING... * WHAT...Dangerously hot conditions with heat index values up to 110 degrees possible. * WHERE...Eastern Monmouth, Western Monmouth, Middlesex, Somerset, Ocean, and Southeastern Burlington Counties. * WHEN...From Wednesday afternoon through Saturday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Very warm low temperatures in the mid 70s to low 80s at night will not offer any relief from the heat. This combined with multiple days of near record breaking temperatures will exacerbate the impacts from the heat and humidity. 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. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. && $$ PAZ054-055-301000- /O.CON.KPHI.XH.A.0001.260701T1600Z-260705T0000Z/ Carbon-Monroe- Including the cities of Jim Thorpe and Stroudsburg 517 PM EDT Mon Jun 29 2026 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH SATURDAY EVENING... * WHAT...Dangerously hot conditions with heat index values up to 105 degrees possible. * WHERE...Carbon and Monroe Counties. * WHEN...From Wednesday afternoon through Saturday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Very warm low temperatures in the low to mid 70s at night will not offer much relief from the heat. This combined with multiple days of near record breaking temperatures will exacerbate the impacts from the heat and humidity. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. && $$ DEZ002>004-MDZ012-015-019-020-301000- /O.CON.KPHI.XH.A.0001.260702T1600Z-260705T0000Z/ Kent-Inland Sussex-Delaware Beaches-Kent MD-Queen Annes-Talbot- Caroline- Including the cities of Easton, Rehoboth Beach, Centreville, Georgetown, Chestertown, Dover, and Denton 517 PM EDT Mon Jun 29 2026 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON THROUGH SATURDAY EVENING... * WHAT...Dangerously hot conditions with heat index values up to 110 degrees possible. * WHERE...In Delaware, Kent, Delaware Beaches, and Inland Sussex Counties. In Maryland, Caroline, Kent MD, Queen Annes, and Talbot Counties. * WHEN...From Thursday afternoon through Saturday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Very warm low temperatures in the 70s at night will not offer much relief from the heat. This combined with multiple days of near record breaking temperatures will exacerbate the impacts from the heat and humidity. 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. && $$ NJZ021>023-301000- /O.CON.KPHI.XH.A.0001.260702T1600Z-260705T0000Z/ Cumberland-Atlantic-Cape May- Including the cities of Cape May Court House, Hammonton, and Millville 517 PM EDT Mon Jun 29 2026 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON THROUGH SATURDAY EVENING... * WHAT...Dangerously hot conditions with heat index values up to 110 degrees possible. * WHERE...Atlantic, Cape May, and Cumberland Counties. * WHEN...From Thursday afternoon through Saturday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Very warm low temperatures in the mid 70s to low 80s at night will not offer any relief from the heat. This combined with multiple days of near record breaking temperatures will exacerbate the impacts from the heat and humidity. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. && $$ NJZ024>026-301000- /O.CON.KPHI.XH.A.0001.260702T1600Z-260705T0000Z/ Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Including the cities of Long Beach Island, Ocean City, and Atlantic City 517 PM EDT Mon Jun 29 2026 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON THROUGH SATURDAY EVENING... * WHAT...Dangerously hot conditions with heat index values up to 108 degrees possible. * WHERE...Atlantic Coastal Cape May, Coastal Atlantic, and Coastal Ocean Counties. * WHEN...From Thursday afternoon through Saturday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Very warm low temperatures in the low to mid 70s at night will not offer any relief from the heat. This combined with multiple days of near record breaking temperatures will exacerbate the impacts from the heat and humidity. 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. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. && $$ RCM/Gorse