Station Name: Potomac, MD
Station Type: Buoy
Data Source: National Data Buoy Center

Elevation Above Sea Level: 0 feet / 0 meters

Nearest Address:
Offshore
Scotland, MD 20687
Saint Mary's County

GPS Coordinates: 38.033, -76.335

Nearby Water Temperatures

Coastal Flood Advisory issued October 19 at 2:01AM EDT until October 20 at 4:00AM EDT by NWS Wakefield VA

Effective: Sun October 19, 2025, 2:01 AM
Expires: Sun October 19, 2025, 10:15 AM

* WHAT...Up to one foot of inundation above ground level in low- lying areas near shorelines and tidal waterways. * WHERE...Westmoreland and Northumberland Counties. * WHEN...Until 4 AM EDT Monday. * IMPACTS...Shallow flooding is expected in the most vulnerable locations near the waterfront and shoreline resulting in a low threat of property damage. Expect up to one foot of water above ground level in low lying, vulnerable areas. Some roads and low lying property including parking lots, parks and lawns near the waterfront will experience shallow flooding.

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.

Coastal Flood Advisory issued October 18 at 10:51PM EDT until October 19 at 4:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Sat October 18, 2025, 10:51 PM
Expires: Sun October 19, 2025, 7:00 AM

* WHAT...Up to one half foot of inundation above ground level expected in low lying areas due to tidal flooding. * WHERE...Shoreline in St. Marys County. * WHEN...Until 4 PM EDT Sunday, especially around the time of high tide. * IMPACTS...At 3.5 feet, water covers roads on Saint George Island, is in yards, and is approaching structures. To the east, inundation is occurring at multiple marinas off St. Mary's River, Smith Creek, and Jutland Creek. * ADDITIONAL DETAILS...Tides one and a half to two feet above normal. The next high tides at Piney Point are 1:26 AM and 1:50 PM. The next high tides at Point Lookout are 12:22 AM and 12:56 PM. The next high tides at Coltons Point are 2:02 AM and 2:26 PM.

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.

Coastal Flood Advisory issued October 18 at 6:40PM EDT until October 20 at 5:00AM EDT by NWS Baltimore MD/Washington DC

Effective: Sat October 18, 2025, 6:40 PM
Expires: Sun October 19, 2025, 2:45 AM

* WHAT...Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE...Shoreline in Calvert County. * WHEN...Until 5 AM EDT Monday, especially around the time of high tide. * IMPACTS...At 3.0 feet, water is expected to reach backyards near 9th Street in North Beach, and could approach 9th Street. At 3.0 feet, parking lots near Charles Street in Solomons begin to flood, with several inches of water covering low- lying portions of Charles Street and Williams Street. * ADDITIONAL DETAILS...Tides one and a half to two feet above normal. The next high tides at Chesapeake Beach are 3:03 AM and 3:37 PM. The next high tides at Solomons Island are 1:21 AM and 1:44 PM.

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.

Coastal Flood Advisory issued October 18 at 10:51PM EDT until October 20 at 5:00AM EDT by NWS Baltimore MD/Washington DC

Effective: Sat October 18, 2025, 10:51 PM
Expires: Sun October 19, 2025, 7:00 AM

* WHAT...Up to one half foot of inundation above ground level in low lying areas due to tidal flooding. * WHERE...Shoreline in Calvert County. * WHEN...Until 5 AM EDT Monday, especially around the time of high tide. * IMPACTS...At 3.0 feet, water is expected to reach backyards near 9th Street in North Beach, and could approach 9th Street. At 3.0 feet, parking lots near Charles Street in Solomons begin to flood, with several inches of water covering low- lying portions of Charles Street and Williams Street. * ADDITIONAL DETAILS...Tides one and a half to two feet above normal. The next high tides at Chesapeake Beach are 3:03 AM and 3:37 PM. The next high tides at Solomons Island are 1:21 AM and 1:44 PM.

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.

Coastal Flood Advisory issued October 19 at 2:01AM EDT until October 20 at 4:00AM EDT by NWS Wakefield VA

Effective: Sun October 19, 2025, 2:01 AM
Expires: Sun October 19, 2025, 10:15 AM

* WHAT...Up to one foot of inundation above ground level in low- lying areas near shorelines and tidal waterways. * WHERE...Richmond, Lancaster, Western Essex and Eastern Essex Counties. * WHEN...Until 4 AM EDT Monday. * IMPACTS...Shallow flooding is expected in the most vulnerable locations near the waterfront and shoreline resulting in a low threat of property damage. Expect up to one foot of water above ground level in low lying, vulnerable areas. Some roads and low lying property including parking lots, parks and lawns near the waterfront will experience shallow flooding.

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.

Coastal Flood Advisory issued October 19 at 2:01AM EDT until October 19 at 8:00PM EDT by NWS Wakefield VA

Effective: Sun October 19, 2025, 2:01 AM
Expires: Sun October 19, 2025, 10:15 AM

* WHAT...For the Coastal Flood Advisory, up to one foot of inundation above ground level in low-lying areas near shorelines and tidal waterways. For the Coastal Flood Warning, one to two feet of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. * WHERE...Somerset County. * WHEN...For the Coastal Flood Advisory, until 8 PM EDT this evening. For the Coastal Flood Warning, from 8 PM this evening to 4 AM EDT Monday. * IMPACTS...Widespread flooding of vulnerable areas will result in an elevated threat of property damage to homes and businesses near the waterfront and shoreline. Water will be 1 to 2 feet above ground level in some areas resulting in a sufficient depth to close numerous roads and threaten homes and businesses. Flooding will extend inland from the waterfront along tidal rivers and bays resulting in some road closures and flooding of vehicles.

Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth.

Coastal Flood Warning issued October 19 at 2:01AM EDT until October 20 at 4:00AM EDT by NWS Wakefield VA

Effective: Sun October 19, 2025, 2:01 AM
Expires: Sun October 19, 2025, 10:15 AM

* WHAT...For the Coastal Flood Advisory, up to one foot of inundation above ground level in low-lying areas near shorelines and tidal waterways. For the Coastal Flood Warning, one to two feet of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. * WHERE...Somerset County. * WHEN...For the Coastal Flood Advisory, until 8 PM EDT this evening. For the Coastal Flood Warning, from 8 PM this evening to 4 AM EDT Monday. * IMPACTS...Widespread flooding of vulnerable areas will result in an elevated threat of property damage to homes and businesses near the waterfront and shoreline. Water will be 1 to 2 feet above ground level in some areas resulting in a sufficient depth to close numerous roads and threaten homes and businesses. Flooding will extend inland from the waterfront along tidal rivers and bays resulting in some road closures and flooding of vehicles.

Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth.

Coastal Flood Advisory issued October 19 at 2:01AM EDT until October 19 at 10:00AM EDT by NWS Wakefield VA

Effective: Sun October 19, 2025, 2:01 AM
Expires: Sun October 19, 2025, 10:15 AM

* WHAT...For the Coastal Flood Advisory, up to one foot of inundation above ground level in low-lying areas near shorelines and tidal waterways. For the Coastal Flood Warning, one to two feet of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. * WHERE...Dorchester and Wicomico Counties. * WHEN...For the Coastal Flood Advisory, until 10 AM EDT this morning. For the Coastal Flood Warning, from 10 AM this morning to 5 AM EDT Monday. * IMPACTS...Widespread flooding of vulnerable areas will result in an elevated threat of property damage to homes and businesses near the waterfront and shoreline. Water will be 1 to 2 feet above ground level in some areas resulting in a sufficient depth to close numerous roads and threaten homes and businesses. Flooding will extend inland from the waterfront along tidal rivers and bays resulting in some road closures and flooding of vehicles.

Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth.

Coastal Flood Warning issued October 19 at 2:01AM EDT until October 20 at 5:00AM EDT by NWS Wakefield VA

Effective: Sun October 19, 2025, 2:01 AM
Expires: Sun October 19, 2025, 10:15 AM

* WHAT...For the Coastal Flood Advisory, up to one foot of inundation above ground level in low-lying areas near shorelines and tidal waterways. For the Coastal Flood Warning, one to two feet of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. * WHERE...Dorchester and Wicomico Counties. * WHEN...For the Coastal Flood Advisory, until 10 AM EDT this morning. For the Coastal Flood Warning, from 10 AM this morning to 5 AM EDT Monday. * IMPACTS...Widespread flooding of vulnerable areas will result in an elevated threat of property damage to homes and businesses near the waterfront and shoreline. Water will be 1 to 2 feet above ground level in some areas resulting in a sufficient depth to close numerous roads and threaten homes and businesses. Flooding will extend inland from the waterfront along tidal rivers and bays resulting in some road closures and flooding of vehicles.

Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth.

Coastal Flood Advisory issued October 18 at 6:40PM EDT until October 20 at 4:00AM EDT by NWS Baltimore MD/Washington DC

Effective: Sat October 18, 2025, 6:40 PM
Expires: Sun October 19, 2025, 2:45 AM

* WHAT...Up to one half foot of inundation above ground level expected in low lying areas due to tidal flooding. * WHERE...Shoreline in Charles and King George Counties. * WHEN...From 1 AM Sunday to 4 AM EDT Monday, 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 one and a half to two feet above normal. The next high tides at Goose Bay are 3:12 AM and 3:36 PM. The next high tides at Dahlgren are 2:06 AM and 2:28 PM.

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.

Coastal Flood Advisory issued October 18 at 10:51PM EDT until October 20 at 4:00AM EDT by NWS Baltimore MD/Washington DC

Effective: Sat October 18, 2025, 10:51 PM
Expires: Sun October 19, 2025, 7:00 AM

* WHAT...Up to one half foot of inundation above ground level expected in low lying areas due to tidal flooding. * WHERE...Shoreline in Charles and King George Counties. * WHEN...Until 4 AM EDT Monday, 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 one and a half to two feet above normal. The next high tides at Goose Bay are 3:12 AM and 3:36 PM. The next high tides at Dahlgren are 2:06 AM and 2:28 PM.

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.

Coastal Flood Advisory issued October 19 at 2:01AM EDT until October 20 at 4:00AM EDT by NWS Wakefield VA

Effective: Sun October 19, 2025, 2:01 AM
Expires: Sun October 19, 2025, 10:15 AM

* WHAT...Up to one foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. * WHERE...In Maryland, Inland Worcester County along the Pocomoke River. In Virginia, the bay side of Accomack County. * WHEN...From 8 PM this evening to 4 AM EDT Monday. * IMPACTS...Shallow flooding is expected in the most vulnerable locations near the waterfront and shoreline resulting in a low threat of property damage. Expect up to one foot of water above ground level in low lying, vulnerable areas. Some roads and low lying property including parking lots, parks and lawns near the waterfront will experience shallow flooding.

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.