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Home Return to list Severe Thunderstorm Warning 0401 Issued by the Baltimore / Washington Forecast Office
Action: New Issued At: 2026-08-10 16:34:27
134
WUUS51 KLWX 102129
SVRLWX
MDC009-017-033-037-102215-
/O.NEW.KLWX.SV.W.0401.260810T2129Z-260810T2215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Baltimore MD/Washington DC
529 PM EDT Mon Aug 10 2026
The National Weather Service in Sterling Virginia has issued a
* Severe Thunderstorm Warning for...
Northwestern St. Marys County in southern Maryland...
Calvert County in southern Maryland...
Southern Prince Georges County in central Maryland...
Northeastern Charles County in southern Maryland...
* Until 615 PM EDT.
* At 529 PM EDT, a severe thunderstorm was located over Waldorf,
moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damaging winds will cause some trees and large branches
to fall. This could injure those outdoors, as well as
damage homes and vehicles. Roadways may become blocked by
downed trees. Localized power outages are possible.
Unsecured light objects may become projectiles.
* Locations impacted include...
Waldorf, Chesapeake Ranch Estates, La Plata, Chesapeake Beach,
Prince Frederick, Sheridan Point, Calvert Cliffs, Hallowing Point,
Saint Leonard Creek, Breezy Point, Flag Harbor, Golden Beach,
Lusby, Saint Charles, Saint Leonard, Accokeek, Brandywine,
Huntingtown, Hughesville, and Baden.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3842 7685 3853 7706 3870 7699 3867 7651
3852 7649 3846 7644 3837 7637
TIME...MOT...LOC 2129Z 280DEG 41KT 3860 7687
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DHOF
Action: Continued Issued At: 2026-08-10 16:39:27
277
WWUS51 KLWX 102138
SVSLWX
Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
538 PM EDT Mon Aug 10 2026
MDC009-017-033-037-102215-
/O.CON.KLWX.SV.W.0401.000000T0000Z-260810T2215Z/
St. Marys MD-Calvert MD-Prince Georges MD-Charles MD-
538 PM EDT Mon Aug 10 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTHWESTERN ST. MARYS...CALVERT...SOUTHEASTERN PRINCE GEORGES
AND NORTHEASTERN CHARLES COUNTIES...
At 537 PM EDT, a severe thunderstorm was located near Hallowing
Point, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damaging winds will cause some trees and large branches to
fall. This could injure those outdoors, as well as damage
homes and vehicles. Roadways may become blocked by downed
trees. Localized power outages are possible. Unsecured
light objects may become projectiles.
Locations impacted include...
Waldorf, Chesapeake Ranch Estates, La Plata, Chesapeake Beach, Prince
Frederick, Sheridan Point, Calvert Cliffs, Hallowing Point, Saint
Leonard Creek, Breezy Point, Flag Harbor, Golden Beach, Lusby, Saint
Charles, Saint Leonard, Accokeek, Brandywine, Huntingtown,
Hughesville, and Baden.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3842 7685 3853 7706 3869 7692 3867 7651
3852 7649 3837 7637
TIME...MOT...LOC 2137Z 270DEG 41KT 3859 7674
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DHOF
Action: Continued Issued At: 2026-08-10 16:42:27
333
WWUS51 KLWX 102142
SVSLWX
Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
542 PM EDT Mon Aug 10 2026
MDC009-017-033-037-102215-
/O.CON.KLWX.SV.W.0401.000000T0000Z-260810T2215Z/
St. Marys MD-Calvert MD-Prince Georges MD-Charles MD-
542 PM EDT Mon Aug 10 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTHWESTERN ST. MARYS...CALVERT...SOUTHEASTERN PRINCE GEORGES
AND NORTHEASTERN CHARLES COUNTIES...
At 542 PM EDT, a severe thunderstorm was located near Hallowing
Point, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damaging winds will cause some trees and large branches to
fall. This could injure those outdoors, as well as damage
homes and vehicles. Roadways may become blocked by downed
trees. Localized power outages are possible. Unsecured
light objects may become projectiles.
Locations impacted include...
Waldorf, Chesapeake Ranch Estates, La Plata, Chesapeake Beach, Prince
Frederick, Sheridan Point, Calvert Cliffs, Hallowing Point, Saint
Leonard Creek, Breezy Point, Flag Harbor, Golden Beach, Lusby, Saint
Charles, Saint Leonard, Accokeek, Brandywine, Huntingtown,
Hughesville, and Baden.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3842 7685 3853 7706 3869 7692 3867 7651
3852 7649 3837 7637
TIME...MOT...LOC 2142Z 270DEG 41KT 3859 7668
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DHOF
Action: Continued Issued At: 2026-08-10 16:44:57
544
WWUS51 KLWX 102144
SVSLWX
Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
544 PM EDT Mon Aug 10 2026
MDC009-017-033-037-102215-
/O.CON.KLWX.SV.W.0401.000000T0000Z-260810T2215Z/
St. Marys MD-Calvert MD-Prince Georges MD-Charles MD-
544 PM EDT Mon Aug 10 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTHWESTERN ST. MARYS...CALVERT...SOUTHEASTERN PRINCE GEORGES
AND NORTHEASTERN CHARLES COUNTIES...
At 544 PM EDT, a severe thunderstorm was located near Prince
Frederick, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damaging winds will cause some trees and large branches to
fall. This could injure those outdoors, as well as damage
homes and vehicles. Roadways may become blocked by downed
trees. Localized power outages are possible. Unsecured
light objects may become projectiles.
Locations impacted include...
Waldorf, Chesapeake Ranch Estates, La Plata, Chesapeake Beach, Prince
Frederick, Sheridan Point, Calvert Cliffs, Hallowing Point, Saint
Leonard Creek, Breezy Point, Flag Harbor, Golden Beach, Lusby, Saint
Leonard, Saint Charles, Huntingtown, Hughesville, Baden, Long Beach,
and Mechanicsville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3842 7685 3850 7700 3868 7680 3867 7651
3852 7649 3837 7637
TIME...MOT...LOC 2144Z 280DEG 41KT 3859 7665
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DHOF
Action: Continued Issued At: 2026-08-10 16:51:28
735
WWUS51 KLWX 102151
SVSLWX
Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
551 PM EDT Mon Aug 10 2026
MDC017-033-102200-
/O.CAN.KLWX.SV.W.0401.000000T0000Z-260810T2215Z/
Prince Georges MD-Charles MD-
551 PM EDT Mon Aug 10 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PRINCE GEORGES
AND NORTHEASTERN CHARLES COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
southern Maryland.
&&
LAT...LON 3839 7653 3842 7683 3851 7677 3851 7673
3850 7670 3850 7668 3853 7667 3862 7667
3868 7664 3867 7651 3852 7649 3837 7637
TIME...MOT...LOC 2150Z 280DEG 41KT 3858 7655
$$
MDC009-037-102215-
/O.CON.KLWX.SV.W.0401.000000T0000Z-260810T2215Z/
St. Marys MD-Calvert MD-
551 PM EDT Mon Aug 10 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTHWESTERN ST. MARYS AND CALVERT COUNTIES...
At 550 PM EDT, a severe thunderstorm was located over Prince
Frederick, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damaging winds will cause some trees and large branches to
fall. This could injure those outdoors, as well as damage
homes and vehicles. Roadways may become blocked by downed
trees. Localized power outages are possible. Unsecured
light objects may become projectiles.
Locations impacted include...
Chesapeake Ranch Estates, Chesapeake Beach, Prince Frederick,
Hallowing Point, Saint Leonard Creek, Breezy Point, Sheridan Point,
Calvert Cliffs, Flag Harbor, Golden Beach, Lusby, Saint Leonard,
Huntingtown, Long Beach, Mechanicsville, Charlotte Hall, Calvert
Beach, Benedict, Barstow, and Port Republic.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3839 7653 3842 7683 3851 7677 3851 7673
3850 7670 3850 7668 3853 7667 3862 7667
3868 7664 3867 7651 3852 7649 3837 7637
TIME...MOT...LOC 2150Z 280DEG 41KT 3858 7655
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DHOF
Action: Cancelled Issued At: 2026-08-10 16:51:28
735
WWUS51 KLWX 102151
SVSLWX
Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
551 PM EDT Mon Aug 10 2026
MDC017-033-102200-
/O.CAN.KLWX.SV.W.0401.000000T0000Z-260810T2215Z/
Prince Georges MD-Charles MD-
551 PM EDT Mon Aug 10 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PRINCE GEORGES
AND NORTHEASTERN CHARLES COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
southern Maryland.
&&
LAT...LON 3839 7653 3842 7683 3851 7677 3851 7673
3850 7670 3850 7668 3853 7667 3862 7667
3868 7664 3867 7651 3852 7649 3837 7637
TIME...MOT...LOC 2150Z 280DEG 41KT 3858 7655
$$
MDC009-037-102215-
/O.CON.KLWX.SV.W.0401.000000T0000Z-260810T2215Z/
St. Marys MD-Calvert MD-
551 PM EDT Mon Aug 10 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTHWESTERN ST. MARYS AND CALVERT COUNTIES...
At 550 PM EDT, a severe thunderstorm was located over Prince
Frederick, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damaging winds will cause some trees and large branches to
fall. This could injure those outdoors, as well as damage
homes and vehicles. Roadways may become blocked by downed
trees. Localized power outages are possible. Unsecured
light objects may become projectiles.
Locations impacted include...
Chesapeake Ranch Estates, Chesapeake Beach, Prince Frederick,
Hallowing Point, Saint Leonard Creek, Breezy Point, Sheridan Point,
Calvert Cliffs, Flag Harbor, Golden Beach, Lusby, Saint Leonard,
Huntingtown, Long Beach, Mechanicsville, Charlotte Hall, Calvert
Beach, Benedict, Barstow, and Port Republic.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3839 7653 3842 7683 3851 7677 3851 7673
3850 7670 3850 7668 3853 7667 3862 7667
3868 7664 3867 7651 3852 7649 3837 7637
TIME...MOT...LOC 2150Z 280DEG 41KT 3858 7655
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DHOF
Action: Continued Issued At: 2026-08-10 17:09:28
310
WWUS51 KLWX 102209
SVSLWX
Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
609 PM EDT Mon Aug 10 2026
MDC009-037-102215-
/O.CON.KLWX.SV.W.0401.000000T0000Z-260810T2215Z/
St. Marys MD-Calvert MD-
609 PM EDT Mon Aug 10 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTHERN ST. MARYS AND SOUTHEASTERN CALVERT COUNTIES...
At 609 PM EDT, a severe thunderstorm was located near Taylors Island,
moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damaging winds will cause some trees and large branches to
fall. This could injure those outdoors, as well as damage
homes and vehicles. Roadways may become blocked by downed
trees. Localized power outages are possible. Unsecured
light objects may become projectiles.
Locations impacted include...
Chesapeake Ranch Estates, Saint Leonard Creek, Calvert Cliffs, Flag
Harbor, Lusby, Saint Leonard, Long Beach, Calvert Beach, and Port
Republic.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3837 7637 3839 7653 3840 7660 3850 7654
3854 7650 3852 7649
TIME...MOT...LOC 2209Z 280DEG 41KT 3854 7628
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DHOF
Action: Expired Issued At: 2026-08-10 17:16:28
687
WWUS51 KLWX 102216
SVSLWX
Severe Weather Statement
National Weather Service Baltimore MD/Washington DC
616 PM EDT Mon Aug 10 2026
MDC009-037-102225-
/O.EXP.KLWX.SV.W.0401.000000T0000Z-260810T2215Z/
St. Marys MD-Calvert MD-
616 PM EDT Mon Aug 10 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ST. MARYS AND
SOUTHEASTERN CALVERT COUNTIES HAS EXPIRED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been allowed to expire.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
southern Maryland.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Sterling Virginia.
&&
LAT...LON 3837 7637 3839 7653 3840 7660 3850 7654
3854 7650 3852 7649
TIME...MOT...LOC 2215Z 280DEG 41KT 3853 7620
$$
DHOF
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