Chesapeake Bay From Sandy Point to North Beach MD Marine Forecast
| This Afternoon...Nw Winds 5 To 10 Kt. Waves 1 Ft. |
| Tonight...Sw Winds 5 To 10 Kt. Waves 1 Ft. |
| Thu...Nw Winds 15 To 20 Kt With Gusts To 25 Kt. Waves 2 To 3 Ft. |
| Thu Night...Nw Winds 15 To 20 Kt With Gusts To 25 Kt...Becoming N 10 Kt After Midnight. Waves 2 To 3 Ft. |
| Fri...E Winds 5 To 10 Kt. Waves 1 Ft. Snow Likely. |
| Fri Night...N Winds 5 Kt. Waves Less Than 1 Ft. A Chance Of Rain And Snow. |
| Sat...Nw Winds 5 Kt. Waves Less Than 1 Ft. |
| Sun...N Winds 10 To 15 Kt. Waves 1 To 2 Ft. |
| Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 900am EST Wednesday Dec 3 2025 Synopsis A cold, dry airmass will settle over the area through Thursday morning with high pressure nearby. A reinforcing cold front will cross the Mid-Atlantic Thursday afternoon and evening. A reinforcing cold front will cross the Mid- Atlantic Thursday afternoon and evening. A pair of clipper- like systems may affect the area heading into early next week. Near Term - Through Tonight Stratocu remain persistent over western MD and eastern WV roughly west of the Blue Ridge/Catoctins and north of US-50. These clouds should gradually dissipate through midday as drier air moves into the region. A broad area of cold, high pressure will build eastward today. Mainly sunny skies are expected areawide this afternoon. NW winds will remain light through the day as surface ridging builds in, eventually becoming west to south by nightfall. Highs will be well below average with 20s in the mtns and upper 30s to low 40s elsewhere. Cold tonight under the high as the winds go calm. Lows generally in the mid 20s, though teens possible in the colder locales and higher elevations. Short Term - Thursday Through Friday Night A moisture starved, reinforcing cold front will pass through the area Thursday. This frontal passage is likely dry for most outside the Alleghenies where snow showers are possible. Model output Quantitative Precipitation Forecast is generally 0.05-0.1", but given the SLRs of ~15:1, this could result in a fluffy coating to inch or two of snow. Given the timing is likely just after sunrise, the morning commute could be impacted. To the east, it will become blustery with increasing clouds and perhaps a couple of flurries into the I-81 corridor. Thursday night is the forecast to be the coldest temps of the early winter season thus far. Lows will drop into the teens for most, with lower 20s near and east of I-95, and in the lee of the Blue Ridge in central Virginia. The highest elevations of the Alleghenies may dip into the single digits. Wind will be light, 5 mph or less out of the north except perhaps up to 10 mph at times atop the highest peaks. Therefore, wind chills will not be much of a factor except at the highest elevations where wind chills in the single digits below zero are likely. Decent model agreement of a low amplitude shortwave moving across the southern Mid-Atlantic Friday as high pressure retreats offshore. Uncertainties arise in how far north the precipitation will make it. Almost all ensemble and deterministic guidance has enough cold air in place to favor all snow in our FA should moisture make it this far north. There are a few outliers that have rain across the far S of the FA. FWIW, snow and ice has trended up slightly over the past couple of runs. While amounts are forecast to generally be light (an inch or two, perhaps three should a higher end solution verify), the northward shift is notable. Looking at clusters featuring the greatest variance (EOF) regarding amplitude does suggest additional northward expansion is possible. Just something to keep in mind. Long Term - Saturday Through Tuesday Broad upper level troughing pivots over the eastern CONUS throughout the long term, leading to daily precipitation chances and below normal temperatures. Saturday will be the driest day throughout the long term period, with precipitation chances isolated to the Alleghenies and southern Maryland. The rest of the area will remain dry as surface high pressure builds nearby. High temperatures will be in the 30s and 40s with overnight lows dropping into the 20s for most. A slight chance of snow showers persist Sunday through Tuesday as troughing pivots overhead and multiple fronts track across the region. With precipitation chances remaining low, primarily dry conditions are expected. High temperatures will be in the 30s and 40s each day with highest elevations staying in the 20s. Overnight low temperatures will be in the teens to 20s. Marine High pressure moving overhead will cause winds to become lighter and shift to out of the southwest this afternoon. A reinforcing cold front will cross the region Thursday into Thursday night resulting in an uptick in winds and subsequent SCA (Small Craft Advisory) potential. Sub-SCA (Small Craft Advisory) level winds are expected on Friday with southerly winds. Northwest winds on Saturday shift to northerly on Sunday. Winds are expected to remain below SCA (Small Craft Advisory) criteria both days. NOAA Baltimore MD/Washington DC Office: Watches - Warnings - Advisories DC...None. MD...None. VA...None. WV...None. Marine Small Craft Advisory until 10am EST this morning for ANZ533- 534-537-543. |