Extreme Heat Warning
URGENT - WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
812 PM EDT Sun Jun 22 2025
DCZ001-MDZ005-006-008-011-013-014-016>018-504>508-VAZ053>057-502-526-
527-230815-
/O.CON.KLWX.XH.W.0001.250623T1500Z-250624T0100Z/
/O.CON.KLWX.XH.A.0002.250624T1500Z-250625T0100Z/
District of Columbia-Carroll-Northern Baltimore-Cecil-Southern
Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-
Central and Southeast Montgomery-Northwest Howard-Central and
Southeast Howard-Northwest Harford-Southeast Harford-Fairfax-
Arlington/Falls Church/Alexandria-Stafford-Spotsylvania-King
George-Southern Fauquier-Northwest Prince William-Central and
Southeast Prince William/Manassas/Manassas Park-
812 PM EDT Sun Jun 22 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 9 PM EDT
MONDAY...
...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY EVENING...
* WHAT...For the Extreme Heat Warning, dangerously hot conditions
with heat index values up to 110 expected. For the Extreme Heat
Watch, dangerously hot conditions with heat index values up to 110
possible.
* WHERE...Portions of DC, central, north central, northeast,
northern, and southern Maryland, and central and northern Virginia.
* WHEN...For the Extreme Heat Warning, from 11 AM to 9 PM EDT
Monday. For the Extreme Heat Watch, from Tuesday morning through
Tuesday 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.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
812 PM EDT Sun Jun 22 2025
MDZ004-503-VAZ505-506-230815-
/O.EXP.KLWX.HT.Y.0001.000000T0000Z-250623T0000Z/
/O.CON.KLWX.XH.W.0001.250623T1500Z-250624T0100Z/
/O.CON.KLWX.XH.A.0002.250624T1500Z-250625T0100Z/
Frederick MD-Northwest Montgomery-Western Loudoun-Eastern Loudoun-
812 PM EDT Sun Jun 22 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 9 PM EDT
MONDAY...
...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY EVENING...
...HEAT ADVISORY HAS EXPIRED...
* WHAT...For the Extreme Heat Warning, dangerously hot conditions
with heat index values up to 110 expected. For the Extreme Heat
Watch, dangerously hot conditions with heat index values up to 110
possible.
* WHERE...In Maryland, Northwest Montgomery and Frederick MD
Counties. In Virginia, Eastern Loudoun and Western Loudoun
Counties.
* WHEN...For the Extreme Heat Warning, from 11 AM to 9 PM EDT
Monday. For the Extreme Heat Watch, from Tuesday morning through
Tuesday evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
812 PM EDT Sun Jun 22 2025
MDZ003-VAZ027>031-WVZ052-053-230815-
/O.EXP.KLWX.HT.Y.0001.000000T0000Z-250623T0000Z/
/O.CON.KLWX.XH.W.0001.250623T1500Z-250624T0100Z/
/O.CON.KLWX.XH.A.0002.250624T1500Z-250625T0100Z/
Washington-Shenandoah-Frederick VA-Page-Warren-Clarke-Berkeley-
Jefferson-
812 PM EDT Sun Jun 22 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 9 PM EDT
MONDAY...
...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY EVENING...
...HEAT ADVISORY HAS EXPIRED...
* WHAT...For the Extreme Heat Warning, dangerously hot conditions
with heat index values up to 107 expected. For the Extreme Heat
Watch, dangerously hot conditions with heat index values up to 107
possible.
* WHERE...In Maryland, Washington County. In Virginia, Clarke,
Frederick VA, Page, Shenandoah, and Warren Counties. In West
Virginia, Berkeley and Jefferson Counties.
* WHEN...For the Extreme Heat Warning, from 11 AM to 9 PM EDT
Monday. For the Extreme Heat Watch, from Tuesday morning through
Tuesday 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.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Pittsburgh PA
333 AM EDT Mon Jun 23 2025
PAZ014-020-021-029-073-075-231545-
/O.CON.KPBZ.XH.W.0001.000000T0000Z-250626T0000Z/
Butler-Beaver-Allegheny-Washington-Westmoreland-Fayette-
Including the cities of Canonsburg, Washington, New Kensington,
Monaca, Murrysville, Beaver Falls, Latrobe, Aliquippa,
Greensburg, Lower Burrell, Uniontown, Monessen, Butler,
Pittsburgh Metro Area, and Ambridge
333 AM EDT Mon Jun 23 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY...
* WHAT...Dangerously hot conditions with heat index values around
105.
* WHERE...Beaver, Fayette, Washington, Allegheny, Butler, and
Westmoreland Counties.
* WHEN...Until 8 PM EDT Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Stay cool, stay hydrated, stay informed.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
320 AM EDT Mon Jun 23 2025
PAZ060>062-070-071-101>106-232045-
/O.CON.KPHI.XH.W.0001.000000T0000Z-250626T0000Z/
Berks-Lehigh-Northampton-Delaware-Philadelphia-Western Chester-
Eastern Chester-Western Montgomery-Eastern Montgomery-Upper Bucks-
Lower Bucks-
Including the cities of Perkasie, Morrisville, Philadelphia,
Pottstown, West Chester, Kennett Square, Chalfont, Norristown,
Media, Honey Brook, Collegeville, Lansdale, Bethlehem,
Doylestown, Reading, Easton, Allentown, and Oxford
320 AM EDT Mon Jun 23 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY...
* WHAT...Dangerously hot conditions with heat index values up to 110.
* WHERE...Portions of east central and southeast Pennsylvania.
* WHEN...Until 8 PM EDT Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
* ADDITIONAL DETAILS...The hottest temperatures and heat indices
will occur Monday and Tuesday. Low temperatures near 75 to 80
degrees and high humidity will not offer much relief from the heat
at night.
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 for assistance locating appropriate shelter from
the heat.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Mount Holly NJ
320 AM EDT Mon Jun 23 2025
DEZ001-NJZ017>019-232045-
/O.CON.KPHI.XH.W.0001.000000T0000Z-250626T0000Z/
New Castle-Gloucester-Camden-Northwestern Burlington-
Including the cities of Wilmington, Moorestown, Mount Holly,
Camden, Cherry Hill, and Glassboro
320 AM EDT Mon Jun 23 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY...
* WHAT...Dangerously hot conditions with heat index values up to 108.
* WHERE...In Delaware, New Castle County. In New Jersey, Camden,
Gloucester, and Northwestern Burlington Counties.
* WHEN...Until 8 PM EDT Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
* ADDITIONAL DETAILS...The hottest temperatures and heat indices
will occur Monday and Tuesday. Low temperatures near 75 to 80
degrees and high humidity will not offer much relief from the heat
at night.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
If you do not have air conditioning in your home or lack shelter,
you can call 211 for assistance locating appropriate shelter from
the heat.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Wakefield VA
216 AM EDT Mon Jun 23 2025
VAZ062-064-068-069-075>078-080>086-089-090-093-510>524-231430-
/O.CON.KAKQ.XH.W.0001.250623T1400Z-250626T0000Z/
Goochland-Caroline-Amelia-Powhatan-Westmoreland-Richmond-
Northumberland-Lancaster-Dinwiddie-Prince George (including
Hopewell and Petersburg)-Charles City-New Kent-Gloucester-
Middlesex-Mathews-Surry-James City-Isle of Wight-Eastern Louisa-
Western Hanover-Eastern Hanover-Western Chesterfield-Eastern
Chesterfield (Including Col. Heights)-Western Henrico (Including
the City of Richmond)-Eastern Henrico-Western King William-
Eastern King William-Western King and Queen-Eastern King and
Queen-Western Essex-Eastern Essex-York-Newport News-
216 AM EDT Mon Jun 23 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
8 PM EDT WEDNESDAY...
* WHAT...Dangerously hot conditions with heat index values of 110 or
greater expected.
* WHERE...Portions of central, east central, eastern, north central,
south central, and southeast Virginia.
* WHEN...From 10 AM this morning to 8 PM EDT Wednesday.
* 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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service State College PA
328 PM EDT Sun Jun 22 2025
PAZ036-056-057-059-063>066-231930-
/O.CON.KCTP.XH.W.0001.000000T0000Z-250626T0000Z/
Franklin-Perry-Dauphin-Lebanon-Cumberland-Adams-York-Lancaster-
Including the cities of Harrisburg, Newport, Lebanon,
Chambersburg, Lancaster, Hershey, Carlisle, Gettysburg, and York
328 PM EDT Sun Jun 22 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT WEDNESDAY
FOR THE LOWER SUSQUEHANNA VALLEY...
* WHAT...Dangerously hot conditions with heat index values up to 108
for the Lower Susquehanna Valley.
* WHERE...Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon,
Perry, and York Counties.
* WHEN...Until 8 PM EDT Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
* ADDITIONAL DETAILS...Heat index values will be highest on Monday
and Tuesday. The highest heat index will occur in the urban valley
locations. Temperatures in the 70s overnight will provide little
if any relief.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay out of the sun, and stay in an
air-conditioned room.
Check up on relatives and neighbors, and provide pets with adequate
water and shelter from the sun.
Extreme Heat can be life-threatening among at-risk populations, such
as children, the elderly, and those with pre-existing health
conditions.
&&
$$
