Marine Weather and Tide Forecast for Fort Washington, MD
October 4, 2023 9:52 PM EDT (01:52 UTC)
Sunrise 7:05AM Sunset 6:48PM Moonrise 9:10PM Moonset 12:06PM
ANZ535 Tidal Potomac From Key Bridge To Indian Head- 732 Pm Edt Wed Oct 4 2023
Tonight..SE winds around 5 kt. Waves 1 ft or less.
Thu..SE winds around 5 kt. Waves 1 ft.
Thu night..SE winds around 5 kt. Waves 1 ft.
Fri..S winds around 5 kt. Waves 1 ft.
Fri night..S winds around 5 kt. Waves 1 ft. A chance of showers.
Sat..W winds 5 to 10 kt...becoming nw 15 kt in the afternoon. Gusts up to 25 kt. Waves 1 ft. A chance of showers.
Sat night..NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
Sun..W winds 10 to 15 kt. Waves 1 ft.
Mon..SW winds 5 to 10 kt. Waves 1 ft.
Tonight..SE winds around 5 kt. Waves 1 ft or less.
Thu..SE winds around 5 kt. Waves 1 ft.
Thu night..SE winds around 5 kt. Waves 1 ft.
Fri..S winds around 5 kt. Waves 1 ft.
Fri night..S winds around 5 kt. Waves 1 ft. A chance of showers.
Sat..W winds 5 to 10 kt...becoming nw 15 kt in the afternoon. Gusts up to 25 kt. Waves 1 ft. A chance of showers.
Sat night..NW winds 10 to 15 kt with gusts to 25 kt. Waves 1 ft.
Sun..W winds 10 to 15 kt. Waves 1 ft.
Mon..SW winds 5 to 10 kt. Waves 1 ft.
ANZ500 732 Pm Edt Wed Oct 4 2023
Synopsis for the tidal potomac and md portion of the chesapeake bay..
high pressure will gradually move offshore through Thursday. A strong cold front will cross the waters late Friday into Saturday with gusty showers and perhaps a Thunderstorm. High pressure builds from the southwest Sunday while low pressure stalls to the north. Additional weak disturbances pass by early next week. Small craft advisories may be needed Friday night, and will likely be needed behind the front on Saturday and Sunday.
Synopsis for the tidal potomac and md portion of the chesapeake bay..
high pressure will gradually move offshore through Thursday. A strong cold front will cross the waters late Friday into Saturday with gusty showers and perhaps a Thunderstorm. High pressure builds from the southwest Sunday while low pressure stalls to the north. Additional weak disturbances pass by early next week. Small craft advisories may be needed Friday night, and will likely be needed behind the front on Saturday and Sunday.
Area Discussion for - Baltimore, MD/Washington
(on/off) HelpNOTE: mouseover dotted underlined text for definition
FXUS61 KLWX 050059 AFDLWX
Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 859 PM EDT Wed Oct 4 2023
SYNOPSIS
High pressure will gradually move offshore through Thursday. A strong cold front will cross the area Friday night into Saturday. An upper-level trough will remain overhead through the middle portion of next week while high pressure builds to the south, causing noticeably cooler conditions.
NEAR TERM /THROUGH THURSDAY/
Some cirrus has started to move into the region from the west, though skies should remain mostly clear for a good part of tonight. Winds have veered south to southeasterly this evening, remaining light at/less than 5mph. This will lead to increasing marine stratocu offshore of VA that eventually move onshore late tonight into tomorrow morning. Low temperatures will be in the 50s for most areas.
Areas of fog in the river valleys, sheltered valleys, and rural areas are expected again tonight. There may be more in the way of low clouds toward morning, especially near and east of Interstate 95.
SHORT TERM /THURSDAY NIGHT THROUGH FRIDAY NIGHT/
The surface ridge axis will remain nearby Thursday while a cold front moves into the Great Lakes and Midwest. High pressure will shift off the New England Coast and a cutoff low will remain well off the southeast Coast. This will all come together to bring a light southeast wind to our area. There should still be enough subsidence overhead (between the cold front to the west and cutoff upper-level low to the east) for more dry and warm conditions. There may be some more in the way of a cu deck (sct-bkn) since moisture will be a little more abundant compared to recent days.
The cold front will move into the eastern Great Lakes and Ohio Valley Thursday night, and a slight southeast flow will continue in the low-levels of the atmosphere. With added moisture, low clouds are more likely to develop and become more widespread Thursday night along with areas of fog. Some fog may be dense.
Some drizzle or even a shower cannot be ruled out late Thursday night, but left it out of the forecast for now given the low confidence.
The cold front will gradually approach our western areas Friday before moving into the area Friday night. The upper-level trough associated with the cold front is most likely to dig and shift from a positive tilt toward a neutral and negative tilt during this time. However, the potent upper-level dynamics associated with the trough will most likely lag behind the actual cold front, meaning that there will not be that much in the way of forcing when moisture content and instability will be highest ahead of and with the frontal passage late Friday and Friday night. Therefore, a few showers are possible, but coverage should be isolated to scattered for most places. The best chance for showers will be around the Allegheny Highlands, closer to the approaching cold front Friday afternoon/evening, and then across the rest of the area Friday night.
LONG TERM /SATURDAY THROUGH WEDNESDAY/
On Saturday, as a surface cold front moves to the east of the region, an upper level trough will swing through the Lower Great Lakes into the Northeast U.S. Some weak instability and modest wind shear could spawn a few showers. The potential for gusty winds associated with the showers will depend on the amount of instability during the midday and afternoon hours.
A strong west to northwest flow will usher in a colder air mass behind the cold front. Later Saturday and early Sunday will likely be blustery, with winds 15- 20 kts and gusts 25-30kt and higher along the ridge tops. Winds could approach wind advisory criteria along the ridge tops. Temperatures will top out around midday in the 60s to lower 70s Saturday before falling into the 50s to lower 60s Sunday. Lows are expected to fall into the 30s and 40s Sunday night, possibly down to freezing in the higher elevations. Temperatures then gradually warm up Monday into Tuesday with high pressure building in from the Southeast.
AVIATION /01Z THURSDAY THROUGH MONDAY/
Calm winds across the area tonight with mostly clear skies should allow patchy fog to develop near all terminals late tonight, except for DCA. The best chance for fog will be around KMRB and KCHO. There will be some low clouds moving in from the southeast late, which could result in a brief period of MVFR CIGs at BWI, MTN, and possibly DCA. Confidence is low that these clouds will result in sub-VFR conditions before sunrise.
A bkn cu deck will likely develop, especially near and east of I-95 (KDCA, KBWI, and KMTN) where a period of MVFR cigs are possible Thursday morning/midday, but the cigs should lift allowing for VFR conditions Thursday afternoon into Thursday evening. More widespread low clouds and/or fog are expected later Thursday night into Friday morning with subVFR conditions likely and IFR/subIFR conditions possible. A few showers are possible Friday afternoon and Friday night as a cold front moves into the area. However, coverage should be isolated to scattered for most areas. More low clouds/and or fog are possible Friday night, especially if the timing of the fropa is slower.
VFR conditions most likely Saturday through Sunday night. There could be a brief period of MVFR conditions in any heavier showers through midday Saturday. Winds west to northwest 15 to 20 knots with gusts 25 to 30 knots are most likely Saturday.
Gusty northwest winds will likely continue through Sunday as well before diminishing Sunday night.
MARINE
A southeast to south wind is expected through Thursday night, with wind speeds remaining below SCA criteria. However, a brief period of 18-20KT gusts is possible late Thursday afternoon into early evening.
A cold front will approach Friday before moving into the area Friday night. A few showers are possible.
Low clouds and fog are possible late tonight into early Thursday morning, and low clouds/fog are likely later Thursday night and Friday morning. Some fog may be dense. More low clouds/fog are possible ahead of the cold front Friday night.
Small craft advisories likely Saturday and Saturday night due to gusty west to northwest winds behind the cold front. Winds may even approach gale-force levels, but confidence is low at this time. Another concern is for a few gusty showers that may warrant Special Marine Warnings since the wind field aloft will be strengthening and there will be some instability subsidence inversion. Gusty northwest will likely continue Sunday into Sunday night.
TIDES/COASTAL FLOODING
Water levels will be close to minor flood with the high tide cycle this evening, though confidence is high that Straits Point, Annapolis, and Washington DC peak just below minor flood.
Elevated water levels continue through Friday, with caution stages likely and minor tidal flooding possible. The best chance for minor tidal flooding will be during the late afternoon/evening high tide cycle (the preferred astronomical tide). Anomalies should fall Saturday with stronger offshore winds.
LWX WATCHES/WARNINGS/ADVISORIES
DC...None.
MD...None.
VA...None.
WV...None.
MARINE...None.
Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 859 PM EDT Wed Oct 4 2023
SYNOPSIS
High pressure will gradually move offshore through Thursday. A strong cold front will cross the area Friday night into Saturday. An upper-level trough will remain overhead through the middle portion of next week while high pressure builds to the south, causing noticeably cooler conditions.
NEAR TERM /THROUGH THURSDAY/
Some cirrus has started to move into the region from the west, though skies should remain mostly clear for a good part of tonight. Winds have veered south to southeasterly this evening, remaining light at/less than 5mph. This will lead to increasing marine stratocu offshore of VA that eventually move onshore late tonight into tomorrow morning. Low temperatures will be in the 50s for most areas.
Areas of fog in the river valleys, sheltered valleys, and rural areas are expected again tonight. There may be more in the way of low clouds toward morning, especially near and east of Interstate 95.
SHORT TERM /THURSDAY NIGHT THROUGH FRIDAY NIGHT/
The surface ridge axis will remain nearby Thursday while a cold front moves into the Great Lakes and Midwest. High pressure will shift off the New England Coast and a cutoff low will remain well off the southeast Coast. This will all come together to bring a light southeast wind to our area. There should still be enough subsidence overhead (between the cold front to the west and cutoff upper-level low to the east) for more dry and warm conditions. There may be some more in the way of a cu deck (sct-bkn) since moisture will be a little more abundant compared to recent days.
The cold front will move into the eastern Great Lakes and Ohio Valley Thursday night, and a slight southeast flow will continue in the low-levels of the atmosphere. With added moisture, low clouds are more likely to develop and become more widespread Thursday night along with areas of fog. Some fog may be dense.
Some drizzle or even a shower cannot be ruled out late Thursday night, but left it out of the forecast for now given the low confidence.
The cold front will gradually approach our western areas Friday before moving into the area Friday night. The upper-level trough associated with the cold front is most likely to dig and shift from a positive tilt toward a neutral and negative tilt during this time. However, the potent upper-level dynamics associated with the trough will most likely lag behind the actual cold front, meaning that there will not be that much in the way of forcing when moisture content and instability will be highest ahead of and with the frontal passage late Friday and Friday night. Therefore, a few showers are possible, but coverage should be isolated to scattered for most places. The best chance for showers will be around the Allegheny Highlands, closer to the approaching cold front Friday afternoon/evening, and then across the rest of the area Friday night.
LONG TERM /SATURDAY THROUGH WEDNESDAY/
On Saturday, as a surface cold front moves to the east of the region, an upper level trough will swing through the Lower Great Lakes into the Northeast U.S. Some weak instability and modest wind shear could spawn a few showers. The potential for gusty winds associated with the showers will depend on the amount of instability during the midday and afternoon hours.
A strong west to northwest flow will usher in a colder air mass behind the cold front. Later Saturday and early Sunday will likely be blustery, with winds 15- 20 kts and gusts 25-30kt and higher along the ridge tops. Winds could approach wind advisory criteria along the ridge tops. Temperatures will top out around midday in the 60s to lower 70s Saturday before falling into the 50s to lower 60s Sunday. Lows are expected to fall into the 30s and 40s Sunday night, possibly down to freezing in the higher elevations. Temperatures then gradually warm up Monday into Tuesday with high pressure building in from the Southeast.
AVIATION /01Z THURSDAY THROUGH MONDAY/
Calm winds across the area tonight with mostly clear skies should allow patchy fog to develop near all terminals late tonight, except for DCA. The best chance for fog will be around KMRB and KCHO. There will be some low clouds moving in from the southeast late, which could result in a brief period of MVFR CIGs at BWI, MTN, and possibly DCA. Confidence is low that these clouds will result in sub-VFR conditions before sunrise.
A bkn cu deck will likely develop, especially near and east of I-95 (KDCA, KBWI, and KMTN) where a period of MVFR cigs are possible Thursday morning/midday, but the cigs should lift allowing for VFR conditions Thursday afternoon into Thursday evening. More widespread low clouds and/or fog are expected later Thursday night into Friday morning with subVFR conditions likely and IFR/subIFR conditions possible. A few showers are possible Friday afternoon and Friday night as a cold front moves into the area. However, coverage should be isolated to scattered for most areas. More low clouds/and or fog are possible Friday night, especially if the timing of the fropa is slower.
VFR conditions most likely Saturday through Sunday night. There could be a brief period of MVFR conditions in any heavier showers through midday Saturday. Winds west to northwest 15 to 20 knots with gusts 25 to 30 knots are most likely Saturday.
Gusty northwest winds will likely continue through Sunday as well before diminishing Sunday night.
MARINE
A southeast to south wind is expected through Thursday night, with wind speeds remaining below SCA criteria. However, a brief period of 18-20KT gusts is possible late Thursday afternoon into early evening.
A cold front will approach Friday before moving into the area Friday night. A few showers are possible.
Low clouds and fog are possible late tonight into early Thursday morning, and low clouds/fog are likely later Thursday night and Friday morning. Some fog may be dense. More low clouds/fog are possible ahead of the cold front Friday night.
Small craft advisories likely Saturday and Saturday night due to gusty west to northwest winds behind the cold front. Winds may even approach gale-force levels, but confidence is low at this time. Another concern is for a few gusty showers that may warrant Special Marine Warnings since the wind field aloft will be strengthening and there will be some instability subsidence inversion. Gusty northwest will likely continue Sunday into Sunday night.
TIDES/COASTAL FLOODING
Water levels will be close to minor flood with the high tide cycle this evening, though confidence is high that Straits Point, Annapolis, and Washington DC peak just below minor flood.
Elevated water levels continue through Friday, with caution stages likely and minor tidal flooding possible. The best chance for minor tidal flooding will be during the late afternoon/evening high tide cycle (the preferred astronomical tide). Anomalies should fall Saturday with stronger offshore winds.
LWX WATCHES/WARNINGS/ADVISORIES
DC...None.
MD...None.
VA...None.
WV...None.
MARINE...None.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| WASD2 - 8594900 - Washington, DC | 11 mi | 53 min | SSE 4.1G | 71°F | 70°F | 30.19 | ||
| BSLM2 - Chesapeake Bay, MD | 18 mi | 83 min | 0 | 63°F | 30.18 | 60°F | ||
| NCDV2 | 28 mi | 53 min | SW 1G | 67°F | 75°F | |||
| APAM2 - 8575512 - Annapolis, MD | 34 mi | 53 min | ESE 1G | 71°F | 76°F | 30.19 | ||
| TPLM2 - Thomas Point, MD | 34 mi | 53 min | SSE 13G | 73°F | 30.22 | |||
| 44062 - Gooses Reef, MD | 35 mi | 41 min | S 12G | 68°F | 72°F | 1 ft | 30.22 | |
| 44063 - Annapolis | 35 mi | 41 min | S 9.7G | 71°F | 73°F | 30.19 | ||
| CPVM2 | 39 mi | 53 min | 73°F | 64°F | ||||
| COVM2 - 8577018 - Cove Point LNG Pier, MD | 41 mi | 53 min | ESE 4.1G | 69°F | 30.22 | |||
| SLIM2 - 8577330 - Solomons Island, MD | 41 mi | 53 min | S 4.1G | 69°F | 73°F | 30.19 | ||
| FSKM2 - 8574728 - Francis Scott Key Bridge, MD | 44 mi | 53 min | S 5.1G | 71°F | ||||
| FSNM2 | 44 mi | 173 min | S 4.1G | 30.17 | ||||
| 44043 - Patapsco, MD | 45 mi | 41 min | SSE 7.8G | 70°F | 72°F | 0 ft | 30.20 | |
| BLTM2 - 8574680 - Baltimore, MD | 45 mi | 53 min | SSE 1G | 74°F | ||||
| PPTM2 - 8578240 - Piney Point, MD | 48 mi | 53 min | S 7G |
toggle option: (graph/table)
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| KDAA DAVISON AAF,VA | 8 sm | 57 min | calm | 10 sm | Clear | 61°F | 61°F | 100% | 30.18 | |
| KDCA RONALD REAGAN WASHINGTON NATIONAL,VA | 9 sm | 60 min | S 07 | 10 sm | A Few Clouds | 70°F | 59°F | 69% | 30.20 | |
| KADW JOINT BASE ANDREWS,MD | 11 sm | 57 min | S 04 | 10 sm | Clear | 63°F | 52°F | 68% | 30.18 | |
| KCGS COLLEGE PARK,MD | 19 sm | 27 min | calm | 10 sm | Clear | 63°F | 59°F | 88% | 30.21 | |
| KNYG QUANTICO MCAF /TURNER FIELD,VA | 21 sm | 56 min | S 05 | 10 sm | Clear | 70°F | 55°F | 60% | 30.20 |
Wind History from DAA
(wind in knots)Fort Washington
Click for Map
Wed -- 06:52 AM EDT 0.23 feet Low Tide
Wed -- 07:06 AM EDT Sunrise
Wed -- 12:28 PM EDT 2.55 feet High Tide
Wed -- 01:06 PM EDT Moonset
Wed -- 06:39 PM EDT 0.30 feet Low Tide
Wed -- 06:46 PM EDT Sunset
Wed -- 10:09 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 06:52 AM EDT 0.23 feet Low Tide
Wed -- 07:06 AM EDT Sunrise
Wed -- 12:28 PM EDT 2.55 feet High Tide
Wed -- 01:06 PM EDT Moonset
Wed -- 06:39 PM EDT 0.30 feet Low Tide
Wed -- 06:46 PM EDT Sunset
Wed -- 10:09 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Fort Washington, Maryland, Tide feet
| 12 am |
| 3.1 |
| 1 am |
| 2.8 |
| 2 am |
| 2.3 |
| 3 am |
| 1.7 |
| 4 am |
| 1.2 |
| 5 am |
| 0.7 |
| 6 am |
| 0.4 |
| 7 am |
| 0.2 |
| 8 am |
| 0.5 |
| 9 am |
| 1.1 |
| 10 am |
| 1.7 |
| 11 am |
| 2.3 |
| 12 pm |
| 2.5 |
| 1 pm |
| 2.5 |
| 2 pm |
| 2.1 |
| 3 pm |
| 1.6 |
| 4 pm |
| 1 |
| 5 pm |
| 0.6 |
| 6 pm |
| 0.4 |
| 7 pm |
| 0.3 |
| 8 pm |
| 0.6 |
| 9 pm |
| 1.2 |
| 10 pm |
| 1.9 |
| 11 pm |
| 2.5 |
Alexandria
Click for Map
Wed -- 12:05 AM EDT 3.49 feet High Tide
Wed -- 07:06 AM EDT Sunrise
Wed -- 07:07 AM EDT 0.26 feet Low Tide
Wed -- 12:43 PM EDT 2.90 feet High Tide
Wed -- 01:06 PM EDT Moonset
Wed -- 06:46 PM EDT Sunset
Wed -- 06:54 PM EDT 0.34 feet Low Tide
Wed -- 10:09 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 12:05 AM EDT 3.49 feet High Tide
Wed -- 07:06 AM EDT Sunrise
Wed -- 07:07 AM EDT 0.26 feet Low Tide
Wed -- 12:43 PM EDT 2.90 feet High Tide
Wed -- 01:06 PM EDT Moonset
Wed -- 06:46 PM EDT Sunset
Wed -- 06:54 PM EDT 0.34 feet Low Tide
Wed -- 10:09 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Alexandria, Virginia, Tide feet
| 12 am |
| 3.5 |
| 1 am |
| 3.3 |
| 2 am |
| 2.8 |
| 3 am |
| 2.1 |
| 4 am |
| 1.5 |
| 5 am |
| 1 |
| 6 am |
| 0.5 |
| 7 am |
| 0.3 |
| 8 am |
| 0.4 |
| 9 am |
| 1 |
| 10 am |
| 1.8 |
| 11 am |
| 2.4 |
| 12 pm |
| 2.8 |
| 1 pm |
| 2.9 |
| 2 pm |
| 2.5 |
| 3 pm |
| 2 |
| 4 pm |
| 1.3 |
| 5 pm |
| 0.8 |
| 6 pm |
| 0.5 |
| 7 pm |
| 0.3 |
| 8 pm |
| 0.5 |
| 9 pm |
| 1.1 |
| 10 pm |
| 2 |
| 11 pm |
| 2.7 |
Sterling, VA,
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