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Elev 33 ft, 38.26 °N, 76.85 °W

Cobb Island, MD Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: Cobb Island, MD
Elevation: 33ft
Nearby Weather Stations

Active Weather Alerts

Gale Warning
Issued: 4:12 AM Sep. 23, 2026 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT EARLY
THIS MORNING...
...GALE WARNING REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 6 AM
EDT THURSDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM THURSDAY TO 6 AM EDT
FRIDAY...

* WHAT...For the first Small Craft Advisory, northeast winds 15 to
25 kt with gusts up to 30 kt and waves 2 to 4 ft. For the Gale
Warning, northeast winds 15 to 25 kt with gusts up to 35 kt and
waves 2 to 4 ft expected. For the second Small Craft Advisory,
northeast winds 15 to 25 kt with gusts up to 30 kt and waves 2
to 4 ft expected.

* WHERE...Chesapeake Bay from North Beach MD to Smith Point VA,
Tidal Potomac from Cobb Island MD to Smith Point VA, Choptank
River to Cambridge MD and the Little Choptank River, Patuxent
River to Broomes Island MD, and Tangier Sound and the inland
waters surrounding Bloodsworth Island.

* WHEN...For the first Small Craft Advisory, until 6 AM EDT
early this morning. For the Gale Warning, from 6 AM this
morning to 6 AM EDT Thursday. For the second Small Craft
Advisory, from 6 AM Thursday to 6 AM EDT Friday.

* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

Small Craft Advisory
Issued: 4:12 AM Sep. 23, 2026 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT EARLY
THIS MORNING...
...GALE WARNING REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 6 AM
EDT THURSDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM THURSDAY TO 6 AM EDT
FRIDAY...

* WHAT...For the first Small Craft Advisory, northeast winds 15 to
25 kt with gusts up to 30 kt and waves 2 to 4 ft. For the Gale
Warning, northeast winds 15 to 25 kt with gusts up to 35 kt and
waves 2 to 4 ft expected. For the second Small Craft Advisory,
northeast winds 15 to 25 kt with gusts up to 30 kt and waves 2
to 4 ft expected.

* WHERE...Chesapeake Bay from North Beach MD to Smith Point VA,
Tidal Potomac from Cobb Island MD to Smith Point VA, Choptank
River to Cambridge MD and the Little Choptank River, Patuxent
River to Broomes Island MD, and Tangier Sound and the inland
waters surrounding Bloodsworth Island.

* WHEN...For the first Small Craft Advisory, until 6 AM EDT
early this morning. For the Gale Warning, from 6 AM this
morning to 6 AM EDT Thursday. For the second Small Craft
Advisory, from 6 AM Thursday to 6 AM EDT Friday.

* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

Small Craft Advisory
Issued: 4:12 AM Sep. 23, 2026 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT EARLY
THIS MORNING...
...GALE WARNING REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 6 AM
EDT THURSDAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM THURSDAY TO 6 AM EDT
FRIDAY...

* WHAT...For the first Small Craft Advisory, northeast winds 15 to
25 kt with gusts up to 30 kt and waves 2 to 4 ft. For the Gale
Warning, northeast winds 15 to 25 kt with gusts up to 35 kt and
waves 2 to 4 ft expected. For the second Small Craft Advisory,
northeast winds 15 to 25 kt with gusts up to 30 kt and waves 2
to 4 ft expected.

* WHERE...Chesapeake Bay from North Beach MD to Smith Point VA,
Tidal Potomac from Cobb Island MD to Smith Point VA, Choptank
River to Cambridge MD and the Little Choptank River, Patuxent
River to Broomes Island MD, and Tangier Sound and the inland
waters surrounding Bloodsworth Island.

* WHEN...For the first Small Craft Advisory, until 6 AM EDT
early this morning. For the Gale Warning, from 6 AM this
morning to 6 AM EDT Thursday. For the second Small Craft
Advisory, from 6 AM Thursday to 6 AM EDT Friday.

* IMPACTS...Strong winds will cause hazardous waves which could
capsize or damage vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

Coastal Flood Advisory
Issued: 2:10 AM Sep. 23, 2026 – National Weather Service
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT
FRIDAY...

* WHAT...Two to three feet of inundation above ground level in
low lying areas due to tidal flooding.

* WHERE...Shoreline in Charles and King George Counties.

* WHEN...Until 2 AM EDT Friday, especially around the time of
high tide.

* IMPACTS...At 3.5 feet, water reaches yards near Cobb Island
and docks near Dahlgren.

* ADDITIONAL DETAILS...Tides two and a half to three feet above
normal. The next high tide at Indian Head is at 6:06 AM and 6:35
PM. The next high tide at Goose Bay is at 2:12 AM and 2:41 PM.
The next high tide at Dahlgren is at 12:57 AM and 1:19 PM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

&&

Time of high total tides are approximate to the nearest hour.

Upper Machodoc Creek at Dahlgren
MLLW Categories - Minor 3.5 ft, Moderate 5.0 ft, Major 7.0 ft
MHHW Categories - Minor 1.6 ft, Moderate 3.1 ft, Major 5.1 ft

Total      Total    Departure
Day/Time    Tide       Tide     from Norm   Waves    Flood
ft MLLW    ft MHHW       ft       ft      Impact
--------  ---------  ---------  ---------  -------  --------
23/12 AM     3.8        1.9        1.9       1.0     Minor
23/01 PM     3.7        1.8        1.8       0.5     Minor
24/01 AM     4.2        2.3        2.2       1.0     Minor
24/02 PM     4.5        2.6        2.5       0.5     Minor
25/02 AM     4.7        2.8        2.6       0.5     Minor
25/03 PM     4.9        3.0        2.8       0.5     Minor

&&

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