3 products issued by NWS for:
Hazardous Weather Outlook
Hazardous Weather Outlook National Weather Service Baltimore MD/Washington DC 533 PM EDT Wed Jul 16 2025 ANZ530>543-DCZ001-MDZ008-011-013-014-016>018-504-506-508- VAZ053>057-527-172145- 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- 533 PM EDT Wed Jul 16 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...Tonight A Flood Watch for potential flash flooding is in effect for much of the area excluding southern Maryland and the Fredericksburg area through midnight tonight. A few severe storms with damaging wind gusts are possible this evening. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday A Heat Advisory is in effect from 11 AM until 8 PM Thursday for much of the area. .SPOTTER INFORMATION STATEMENT... Please relay any flood or severe thunderstorm reports to the National Weather Service. $$
Flood Watch
Flood Watch
National Weather Service Baltimore MD/Washington DC
519 PM EDT Wed Jul 16 2025
DCZ001-MDZ004>006-008-011-013-014-503>508-VAZ036>040-051-053-054-501-
502-505-506-526-527-170400-
/O.CON.KLWX.FA.A.0028.000000T0000Z-250717T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
District of Columbia-Frederick MD-Carroll-Northern Baltimore-
Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Northwest
Montgomery-Central and Southeast Montgomery-Northwest Howard-
Central and Southeast Howard-Northwest Harford-Southeast Harford-
Nelson-Albemarle-Greene-Madison-Rappahannock-Culpeper-Fairfax-
Arlington/Falls Church/Alexandria-Northern Fauquier-Southern
Fauquier-Western Loudoun-Eastern Loudoun-Northwest Prince William-
Central and Southeast Prince William/Manassas/Manassas Park-
519 PM EDT Wed Jul 16 2025
...FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Washington DC, and portions of Maryland, including the
following areas, Anne Arundel, Carroll, Cecil, Central and
Southeast Howard, Central and Southeast Montgomery, Frederick MD,
Northern Baltimore, Northwest Harford, Northwest Howard, Northwest
Montgomery, Prince Georges, Southeast Harford and Southern
Baltimore, and Virginia, including the following areas, Albemarle,
Arlington/Falls Church/Alexandria, Central and Southeast Prince
William/Manassas/Manassas Park, Culpeper, Eastern Loudoun,
Fairfax, Greene, Madison, Nelson, Northern Fauquier, Northwest
Prince William, Rappahannock, Southern Fauquier and Western
Loudoun.
* WHEN...Until midnight EDT tonight.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas.
* ADDITIONAL DETAILS...
- Showers and thunderstorms will move across the area this
evening. Storms will be capable of producing very heavy
rainfall, with 1 to 3 inches possible in an hour where
stationary cells or multiple rounds occur.
Localized maximum rainfall of 2 to 4 inches is possible.
- Please visit www.weather.gov/safety/flood for flood safety
and preparedness information.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
ADS
Heat Advisory
URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 439 PM EDT Wed Jul 16 2025 DCZ001-MDZ008-011-013-014-016>018-508-VAZ053>055-057-527-170445- /O.NEW.KLWX.HT.Y.0007.250717T1500Z-250718T0000Z/ District of Columbia-Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys-Calvert-Southeast Harford-Fairfax- Arlington/Falls Church/Alexandria-Stafford-King George-Central and Southeast Prince William/Manassas/Manassas Park- 439 PM EDT Wed Jul 16 2025 ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT THURSDAY... * WHAT...Heat index values around 105 expected. * WHERE...Washington DC, and portions of central, northern, and southern Maryland, and central and northern Virginia. * WHEN...From 11 AM to 8 PM EDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$ ADS