Chesapeake Bay north of Pooles Island MD Marine Forecast
| Overnight...Sw Winds 5 Kt. Waves Flat. Isolated Showers. |
| Wed...Sw Winds 5 To 10 Kt. Gusts Up To 20 Kt In The Afternoon. Waves 1 Ft. |
| Wed Night...Sw Winds 5 To 10 Kt. Gusts Up To 20 Kt In The Evening. Waves 1 Ft Or Less. |
| Thu...Sw Winds 5 To 10 Kt. Gusts Up To 20 Kt In The Afternoon. Waves 1 Ft Or Less. |
| Thu Night...Sw Winds 5 To 10 Kt. Gusts Up To 20 Kt In The Evening. Waves 1 Ft Or Less. |
| Fri...W Winds 5 To 10 Kt. Waves 1 Ft. A Chance Of Showers. |
| Fri Night...N Winds 5 To 10 Kt. Waves 1 Ft Or Less. |
| Sat...Se Winds 5 To 10 Kt. Waves 1 Ft Or Less. A Chance Of Showers Through The Night. |
| Sun...Sw Winds 10 To 15 Kt...Becoming Nw. Waves 1 To 2 Ft. A Chance Of Showers In The Morning, Then Showers Likely Through The Night. A Chance Of Showers After Midnight. |
| Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 355am EDT Wednesday April 15 2026 .WHAT HAS CHANGED... Small Craft Advisory issued for the main channel of the Chesapeake Bay this afternoon. .KEY MESSAGES... - 1) Near-record April heat through Thursday as elevated fire weather conditions persist through Saturday. KEY MESSAGE 1...Near-record April heat through Thursday as elevated fire weather conditions persist through Saturday. Near-record April heat and mostly dry conditions are forecast today and Thursday. Highs will reach the upper 80s to low 90s across the area both days. Humidity will be on the low side, so heat indices are going to be the same (or lower) than air temperatures. Still, those who are sensitive to heat should take steps to avoid heat-related illnesses. There will be showers and thunderstorms in PA this afternoon as another front approaches, but all of the guidance keeps convection north of our area today. The next front arrives Thursday night into Friday, but it won't bring any relief from the heat as temps will still be in the 80s Friday. Scattered showers and a few thunderstorms are possible early Friday, but rain amounts will be meager at less than 0.05" for any given area. Saturday looks to be the last day of well above normal temps before a stronger cold front arrives. A deep upper-level trough centered over the northern Great Plains will form later this week, and will begin to make its way towards the East Coast by late this weekend. The 15/00Z model runs are currently well aligned on a Saturday night timeframe for a strong cold front stemming from this trough to track through the Mid- Atlantic. After several days of near-record temperatures in the 80s and 90s, expect a sharp drop in daily highs once this system moves through, with early model runs suggesting a 10-20 degree overall drop in temperatures between Saturday and Monday. Widespread light rainfall is likely to accompany this front with any thunderstorm or severe weather occurring during the Saturday night timeframe as the front should have pushed east of the area by 12Z Sunday. High pressure moves into the area afterwards, allowing for cooler temperatures to persist for a bit once this system moves offshore. Marine New SCA (Small Craft Advisory) has been issued for the main Chesapeake Bay channel from 18Z to 00Z tonight. SCA (Small Craft Advisory) conditions are possible each afternoon through Saturday as southerly channeling produces a few hours of wind gusts around 20 knots. Outside of that, winds remain generally at or below 10 knots. Some thunderstorms will be possible Thursday night into Friday, then again over the weekend as cold fronts track through the area. Fire Weather Winds and Min_Rh look too marginal for an SPS this afternoon. Thursday...Guidance show enough ingredients for a Red Flag Warning day with deep mixing, record breaking temperatures, and sufficiently low Rh's in the mid 20s. Potential for dewpoint bomb day given the deep mixing. Lastly, low MaxRh recoveries tonight/early Thu will drive Energy Release Component (ERC) very high making any wildfires to burn hotter and make containment and/or supression efforts more difficult. Previous Fire Wx discussion... Elevated fire weather conditions are likely to continue across most of the area through Saturday. Each afternoon will bring well above normal temperatures in the 80s to low 90s, southwest winds gusting around 20-25 mph, and minimum RH values around 25-35 percent. Fire weather SPSs will likely be needed Thursday, with coordination from local fire partners and surrounding NWS offices to hone in on areas that are most sensitive. The ongoing lack of rain is going to continue to dry fine fuels, with fuel moistures decreasing a bit each successive day. Local showers and thunderstorms which have occurred across portions of northern Maryland and eastern West Virginia may provide a bit of reprieve in those areas. Thursday looks to be the most fire sensitive day due to a combination of RH values around 20-30 percent and wind gust around 20-25 mph in the afternoon. There is the potential for very dry air to mix down to the surface, this could possibly drop RH values below 20 percent in some areas. If these low RH values come to fruition, it is possible we could be close to Red Flag conditions. Scattered showers and thunderstorms are possible Thursday night into Friday, but coverage will be too low for any beneficial wetting rain. A strong cold front is set to cross the area Sunday, with cooler temperatures into next week. However, there is uncertainty regarding whether most of the area sees a wetting rain, it could be limited rainfall from this front. Climate Many daily records are likely to be broken this week, for both high temperatures and warm low temperatures. Some stations could tie or set their all-time high temperature and warm low temperature records for the month of April. April 14 Location RECORD HIGH RECORD WARM LOW Washington-National (DCA) 91F (1960) 65F (2014) Washington-Dulles (IAD) 87F (1960) 63F (2014) Baltimore (BWI) 91F (1941) 65F (2018) Baltimore Inner Harbor (DMH) 90F (1960) 67F (2018) Martinsburg (MRB) 87F (1960) 62F (2014) Charlottesville (CHO) 90F (1945) 67F (1899) Annapolis(NAK) 90F (1941) 65F (1977) Hagerstown (HGR) 86F (2024) 64F (2014) April 15 Location RECORD HIGH RECORD WARM LOW Washington-National (DCA) 89F (1941) 65F (2023) Washington-Dulles (IAD) 87F (1967) 62F (2023) Baltimore (BWI) 88F (1941) 65F (1941) Baltimore Inner Harbor (DMH) 92F (2024) 67F (1960) Martinsburg (MRB) 90F (1941) 63F (1967) Charlottesville (CHO) 92F (2024) 68F (1941) Annapolis(NAK) 91F (1941) 68F (1994) Hagerstown (HGR) 85F (1960) 61F (2023) April 16 Location RECORD HIGH RECORD WARM LOW Washington-National (DCA) 92F (2002) 65F (2017) Washington-Dulles (IAD) 91F (2002) 63F (2017) Baltimore (BWI) 90F (2012) 66F (1941) Baltimore Inner Harbor (DMH) 91F (2012) 65F (2012) Martinsburg (MRB) 90F (2002) 63F (2017) Charlottesville (CHO) 92F (1976) 67F (1941) Annapolis(NAK) 89F (2017) 70F (1994) Hagerstown (HGR) 88F (2002) 62F (2002) April 17 Location RECORD HIGH RECORD WARM LOW Washington-National (DCA) 95F (2002) 65F (2002) Washington-Dulles (IAD) 93F (2002) 59F (2024) Baltimore (BWI) 93F (2002) 66F (1896) Baltimore Inner Harbor (DMH) 95F (2002) 66F (1976) Martinsburg (MRB) 93F (2002) 60F (1941) Charlottesville (CHO) 94F (1976) 65F (1976) Annapolis(NAK) 90F (1976) 68F (1994) Hagerstown (HGR) 90F (2002) 64F (2002) All-Time April Record Highs: Washington-National (DCA) 95F 4/17/2002, 4/18/1976, 4/23/1960 4/27/1915 Washington-Dulles (IAD) 93F 4/6/2010, 4/17/2002, 4/25/1960 Baltimore (BWI) 94F 4/25/1960, 4/23/1960, 4/20/1941, 4/18/1896 Baltimore Inner Harbor (DMH) 98F 4/26/1990, 4/22/1985 Martinsburg (MRB) 96F 4/21/1941 Charlottesville (CHO) 98F 4/24-25/1925 Annapolis(NAK) 95F 4/20/1941 Hagerstown (HGR) 94F 4/6/2010, 4/18/1976, 4/26/1915 All-Time April Record Warm-Lows: Washington-National (DCA) 70F 4/29/2017 Washington-Dulles (IAD) 68F 4/27/2011 Baltimore (BWI) 70F 4/19/1896 Baltimore Inner Harbor (DMH) 76F 4/26/1990 Martinsburg (MRB) 69F 4/19/2025 Charlottesville (CHO) 72F 4/26/1915 Annapolis(NAK) 70F 4/28/1994, 4/16/1994, 4/18/1896 Hagerstown (HGR) 69F 4/27/2009 NOAA Baltimore MD/Washington DC Office: Watches - Warnings - Advisories DC...None. MD...Small Craft Advisory from 2pm this afternoon to 8pm EDT this evening for MDZ008. VA...None. WV...None. Marine Small Craft Advisory from 2pm this afternoon to 8pm EDT this evening for ANZ530>534-539>541-543. |
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