Tidal Potomac from Indian Head to Cobb Island MD Marine Forecast
| Rest Of Tonight...W Winds 5 Kt. Waves Less Than 1 Ft. |
| Tue...W Winds 5 Kt. Waves Less Than 1 Ft. A Chance Of Showers And Tstms. |
| Tue Night...W Winds 5 Kt. Waves Less Than 1 Ft. A Chance Of Showers And Tstms. |
| Wed...Nw Winds Around 5 Kt. Waves 1 Ft. A Chance Of Showers. |
| Wed Night...S Winds Around 5 Kt. Waves 1 Ft. A Chance Of Showers. |
| Thu...W Winds Around 5 Kt. Waves 1 Ft. |
| Thu Night...Nw Winds Around 5 Kt. Waves 1 Ft. |
| Fri...N Winds Around 5 Kt. Waves 1 Ft. A Chance Of Showers And Tstms Through The Night. |
| Sat...E Winds Around 5 Kt. Waves 1 Ft. Winds And Waves Higher And Visibilities Lower In And Near Tstms. |
| Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 922pm EDT Monday August 10 2026 .WHAT HAS CHANGED... Severe thunderstorms have moved out of the area with the threat for severe weather diminishing for the overnight. All watches and warnings across the forecast area have been cancelled. .KEY MESSAGES... - 1) Severe thunderstorms are possible Tuesday amongst hot and humid conditions. - 2) Showers and thunderstorms remain possible at times through the end of the week, with a cooling trend expected toward the weekend. KEY MESSAGE 1...Severe thunderstorms are possible Tuesday amongst hot and humid conditions. Some guidance shows additional showers and perhaps a thunderstorm moving through the area overnight or into Tuesday morning, though this will be dependent on what develops upstream. It's unlikely any of this activity would be severe. Prospects for thunderstorm continue Tuesday but confidence in the details is lower. There is some signal in the models that instability will be lower over much of the forecast area since the atmosphere might be a bit overturned and there could be debris cloudiness around. Severe weather probabilities are highest across southwestern portions of the CWA, which may be in closer proximity to the MCS (Mesoscale Convective System, a complex of thunderstorms which becomes organized on a scale larger than the individual thunderstorms) track coming out of the Ohio Valley. Some models do still show thunderstorms farther north in the area as well, though. Damaging winds will again be the primary threat. The risk for isolated flash flooding could occur anywhere on either day if a merging or backbuilding storm were to occur over a susceptible area. Accumulatively, however, the risk of flooding is greatest near and west of the Appalachians where several rounds of heavy thunderstorms may occur through mid week. Today might be the hottest day of the week as heat index values are locally peaking over 100. While the humidity sticks around Tuesday, temperatures may be slightly lower. KEY MESSAGE 2...Showers and thunderstorms remain possible at times through the end of the week, with a cooling trend expected toward the weekend. Daily storm chances look to continue through at least Friday as a cold front gradually drifts south. Ahead of that front will be several fast moving shortwave disturbances which will help aid in shower and thunderstorm development during the diurnal periods. The southward progress of the cold front is uncertain however, and could be modulated by various convective complexes and a potential wave of low pressure tracking along it Thursday or Friday. Both physics-based and AI guidance show lower severe weather chances Wednesday through Friday with declining instability. Showers and thunderstorms could remain possible though with the front nearby. Thursday may be relatively the hottest day as heigheights briefly rise. For Saturday in particular, there may be a better chance of drying out as high pressure builds to the north. This will also bring a corresponding cool down in temperatures (potentially a bit below normal) along with lower humidity. The front won't be too far to the south however, and will likely attempt to lift north later this weekend or early next week as a low pressure system moves into the Great Lakes. Thus, some low end Probability of Precipitation remain in the forecast each day through the end of the forecast period. Marine A brief period of southerly channeling may return to the middle and open waters of the Chesapeake Bay this afternoon/evening, but the duration may be brief or disrupted by approaching thunderstorms. Overall sub-SCA (Small Craft Advisory) level winds are expected through much of the week, though wind direction is a bit uncertain as a cold front slowly approaches and various disturbances/thunderstorm clusters pass through. There could be an enhanced northwesterly surge once the front does push through Friday or Saturday. Outside of the background winds, expect daily shower and thunderstorm chances each afternoon and evening through upcoming Friday (though can't rule out storms overnight and in the mornings as well). Special Marine Warnings may be needed to encompass any stronger thunderstorms that may form especially today (especially as an organized line approaches) and Wednesday. Strong to severe wind gusts and frequent lightning will be the main threats. NOAA Baltimore MD/Washington DC Office: Watches - Warnings - Advisories DC...None. MD...None. VA...None. WV...None. Marine None. |
Baltimore/Washington Radar
Northeast Radar
East Coast Satellite