Station Name: FOSTER BRANCH NEAR JOPPATOWNE, MD
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 39 feet

Nearest Address:
504 Foster Knoll Dr
Joppatowne, MD 21085
Harford County

GPS Coordinates: 39.40852778, -76.34263889

Nearby Water Temperatures

Marine Weather Statement issued July 18 at 3:21AM EDT by NWS Baltimore MD/Washington DC

Effective: Sat July 18, 2026, 3:21 AM
Expires: Sat July 18, 2026, 4:45 AM

The areas affected include... Chesapeake Bay from Pooles Island to Sandy Point MD... Chesapeake Bay from Sandy Point to North Beach MD... Chesapeake Bay north of Pooles Island MD... Chester River to Queenstown MD... Eastern Bay... Patapsco River including Baltimore Harbor... At 320 AM EDT, Doppler radar indicated strong thunderstorms, capable of producing winds to around 30 knots and small hail. These thunderstorms were located along a line extending from 11 nm west of Fort Smallwood State Park to near Mayo, moving east at 20 knots. Locations impacted include... North Point State Park, Magothy River, Chester River, Dobbins Island, Pooles Island, Greenbury Point, Gunpowder River, Sandy Point State Park, Highland Beach, Severn River, Thomas Point Light, Parsons Island, Fort Smallwood State Park, Pinehurst, Hart Miller Island, Gibson Island, Bodkin Point, Tolchester Beach, Worton Point, and Love Point.

These strong thunderstorms will likely produce localized winds up to 30 knots, and could pose a serious hazard for boaters. A special marine warning may eventually be required if these storms continue to strengthen. Boaters should consider heading for shore before these strong thunderstorms arrives.

Small Craft Advisory issued July 18 at 2:30AM EDT until July 18 at 11:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Sat July 18, 2026, 2:30 AM
Expires: Sat July 18, 2026, 10:30 AM

* WHAT...Southwest winds 10 to 15 kt with gusts up to 20 kt expected. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD, and Chesapeake Bay and adjoining estuaries north of Drum Point MD. * WHEN...From 11 AM this morning to 11 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

Small Craft Advisory issued July 18 at 7:48AM EDT until July 18 at 11:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Sat July 18, 2026, 7:48 AM
Expires: Sat July 18, 2026, 11:00 PM

* WHAT...Southwest winds 10 to 15 kt with gusts up to 20 kt. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD, and Chesapeake Bay and adjoining estuaries north of Drum Point MD. * WHEN...From 11 AM this morning to 11 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.