Watches, Warnings & Advisories



3 products issued by NWS for: Washington DC

Extreme Heat Watch

URGENT - WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
853 PM EDT Mon Jun 23 2025

DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ053>057-502-505-
506-526-527-240900-
/O.EXP.KLWX.XH.W.0001.000000T0000Z-250624T0100Z/
/O.NEW.KLWX.XH.A.0003.250625T1500Z-250626T0100Z/
/O.CON.KLWX.XH.W.0002.250624T1500Z-250625T0100Z/
District of Columbia-Frederick MD-Carroll-Northern Baltimore-
Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St.
Marys-Calvert-Northwest Montgomery-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-Western Loudoun-Eastern Loudoun-Northwest Prince William-
Central and Southeast Prince William/Manassas/Manassas Park-
853 PM EDT Mon Jun 23 2025

...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 9 PM EDT
TUESDAY...
...EXTREME HEAT WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...
...EXTREME HEAT WARNING WILL EXPIRE AT 9 PM EDT THIS EVENING...

* WHAT...For the Extreme Heat Warning, dangerously hot conditions
  with heat index values up to 111 expected. For the Extreme Heat
  Watch, dangerously hot conditions with heat index values up to 110
  possible.

* WHERE...DC and portions of 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
  Tuesday. For the Extreme Heat Watch, from Wednesday morning
  through Wednesday 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.

&&

$$



Extreme Heat Warning

URGENT - WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
853 PM EDT Mon Jun 23 2025

DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ053>057-502-505-
506-526-527-240900-
/O.EXP.KLWX.XH.W.0001.000000T0000Z-250624T0100Z/
/O.NEW.KLWX.XH.A.0003.250625T1500Z-250626T0100Z/
/O.CON.KLWX.XH.W.0002.250624T1500Z-250625T0100Z/
District of Columbia-Frederick MD-Carroll-Northern Baltimore-
Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St.
Marys-Calvert-Northwest Montgomery-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-Western Loudoun-Eastern Loudoun-Northwest Prince William-
Central and Southeast Prince William/Manassas/Manassas Park-
853 PM EDT Mon Jun 23 2025

...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 9 PM EDT
TUESDAY...
...EXTREME HEAT WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...
...EXTREME HEAT WARNING WILL EXPIRE AT 9 PM EDT THIS EVENING...

* WHAT...For the Extreme Heat Warning, dangerously hot conditions
  with heat index values up to 111 expected. For the Extreme Heat
  Watch, dangerously hot conditions with heat index values up to 110
  possible.

* WHERE...DC and portions of 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
  Tuesday. For the Extreme Heat Watch, from Wednesday morning
  through Wednesday 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.

&&

$$



Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Baltimore MD/Washington DC
939 AM EDT Mon Jun 23 2025

ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508-
VAZ053>057-527-241345-
Chesapeake Bay north of Pooles Island MD-
Chesapeake Bay from Pooles Island to Sandy Point MD-
Chesapeake Bay from Sandy Point to North Beach MD-
Chesapeake Bay from North Beach to Drum Point MD-
Chesapeake Bay from Drum Point MD to Smith Point VA-
Tidal Potomac from Key Bridge to Indian Head MD-
Tidal Potomac from Indian Head to Cobb Island MD-
Tidal Potomac from Cobb Island MD to Smith Point VA-
Patapsco River including Baltimore Harbor-
Chester River to Queenstown MD-Eastern Bay-
Choptank River to Cambridge MD and the Little Choptank River-
Patuxent River to Broomes Island MD-
Tangier Sound and the inland waters surrounding Bloodsworth
Island-District of Columbia-Cecil-Southern Baltimore-
Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-
Central and Southeast Montgomery-Central and Southeast Howard-
Southeast Harford-Fairfax-Arlington/Falls Church/Alexandria-
Stafford-Spotsylvania-King George-
Central and Southeast Prince William/Manassas/Manassas Park-
939 AM EDT Mon Jun 23 2025

This Hazardous Weather Outlook is for the Maryland portion of the
Chesapeake Bay, Tidal Potomac River, and I-95 corridor through
central Maryland, northern Virginia, and District of Columbia.

.DAY ONE...Today and Tonight

An Extreme Heat Warning is in effect for the entire outlook area
from 11 AM until 9 PM today.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

An Extreme Heat Warning is in effect for the entire outlook area
from late Tuesday morning through Tuesday evening.

The extended period of excessively hot and humid conditions
continues through at least Wednesday. Daily heat indices in the
afternoon and evening of 100 to 110 are expected, and up to 115
degrees is possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$