Chesapeake Bay north of Pooles Island MD Marine Forecast
| Rest Of This Afternoon...Nw Winds 5 Kt. Waves Less Than 1 Ft. |
| Tonight...Nw Winds Around 5 Kt. Waves 1 Ft Or Less. |
| Wed...Sw Winds Around 5 Kt. Waves 1 Ft Or Less. |
| Wed Night...S Winds 5 To 10 Kt. Waves 1 Ft. |
| Thu...Sw Winds 5 Kt. Waves Less Than 1 Ft. |
| Thu Night...S Winds 5 To 10 Kt. Waves 1 Ft. |
| Fri...Sw Winds 5 To 10 Kt...Becoming N 10 To 15 Kt After Midnight. Waves 1 Ft. |
| Sat...N Winds 10 To 15 Kt...Becoming E 5 To 10 Kt. Waves 1 Ft. A Chance Of Showers After Midnight. |
| Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 248pm EDT Tuesday September 29 2026 .WHAT HAS CHANGED... Increased precipitation chances this afternoon to accommodate light rain/drizzle moving across portions of the forecast area. Additionally, Coastal Flood Advisories were issued for Annapolis and Havre de Grace. .KEY MESSAGES... - 1) Tranquil weather is expected through Thursday with climbing temperatures. - 2) A stalling cold front and wave of low pressure may affect the area this weekend. - 3) High pressure likely returns early next week. KEY MESSAGE 1...Tranquil weather is expected through Thursday with climbing temperatures. Moisture associated with the departing Nor'Easter remains over the Mid-Atlantic through this afternoon, yielding increased cloud cover and perhaps some light drizzle/rain showers. Upper level ridging slowly builds overhead beginning tonight with surface high pressure remaining overhead through Thursday. With upper level ridging and surface high pressure overhead, dry conditions and warming temperatures are expected through the end of the week. High temperatures today will rise into the 60s and 70s with highs by Thursday rising in the 90s for portions of the area. On Friday, surface high pressure shifts offshore as a cold front approaches from the northwest. Dry conditions and warming temperatures continue for most with the exception of afternoon rain showers in the western portions of the Alleghenies. KEY MESSAGE 2...A stalling cold front and wave of low pressure may affect the area this weekend. Upper troughing shears out toward the Great Lakes, eventually becoming absorbed in a larger cyclonic gyre near Hudson Bay this weekend. At the surface, this pattern sends a cold front southward into Virginia. There is some lingering uncertainty as to where the front stalls, with a sharp temperature gradient across the frontal zone (60s on the north/cool side, 80s on the south/warm side). The temperature forecast for Saturday may be subject to large changes of 10 or more degrees as a result, with the current forecast splitting the difference and calling for widespread 60s and 70s given at least some broad consensus that the front ends up to the south placing the Mid-Atlantic on its cooler and cloudier side. Shower activity may accompany the stalling front, with uncertainty in coverage (though anything severe or particularly heavy seems unlikely at this point). A wave of low pressure, infused with tropical moisture from the remnants of multiple East Pacific systems, treks toward the OH/TN Valleys Saturday into Saturday night. The track of the low beyond this point will depend on (1) where exactly the stalled front is, and (2) the strength of a transient blocking high pressure to the north. Rain or showers become increasingly likely for much of the region Saturday night into Sunday, with a soaking rain possible if the wave of low pressure is a bit more organized/closer to the area. KEY MESSAGE 3...High pressure likely returns early next week. Following the weekend system, a large area of high pressure will likely build from the Upper Midwest and Great Lakes to the Northeast and Mid-Atlantic early next week. This sets the stage for much drier weather and below normal temperatures for the first half of next week. Daytime highs on Monday and Tuesday likely stay in the 60s (50s in the mountains), with overnight lows in the 40s to near 50 (30s in the mountains and sheltered valleys west of the Blue Ridge with perhaps some frost potential in the coldest spots). Marine Light winds remain out of the north/northwest this afternoon before becoming light and variable overnight. Winds shift to southerly Wednesday and remain out of the south on Thursday. With southerly channeling, winds increase over the waters although are expected to remain below SCA (Small Craft Advisory) criteria. That being said, a brief period of near SCA (Small Craft Advisory) criteria winds are possible on Thursday afternoon and can likely be covered with an MWS. North to northeast winds may gust to around 20 knots in the wake of a stalling front Saturday, though the wind forecast is a bit uncertain and depends on exactly where the front stalls. A wave of low pressure passes by on Sunday, which depending on its exact track and strength could result in additional gustiness and SCAs. Rain showers are most likely Saturday night into Sunday; thunder potential seems very low, but not zero during this time. Tides / Coastal Flooding Some uncertainty exists for the remainder of the week as tide levels remain elevated. Coastal Flood Advisories have been issued for Annapolis and Havre de Grace with tidal anomalies forecast to reach minor flood stage. Any subtle shifts upward could result in additional minor flooding, particularly at Dahlgren, Alexandria, and Baltimore where high tide will near minor flood stage. Minor flooding will occur as soon as this evening's high tide. Evening tides would be favored going forward as well since they are astronomically higher. NOAA Baltimore MD/Washington DC Office: Watches - Warnings - Advisories DC...None. MD...None. VA...None. WV...None. Marine None. |
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