Marine Weather and Tide Forecast for Brookmont, MD
 | Sunrise 5:42 AM Sunset 8:33 PM Moonrise 1:09 AM Moonset 2:36 PM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
ANZ535 Tidal Potomac From Key Bridge To Indian Head- 119 Pm Edt Wed Jun 10 2026
.small craft advisory in effect until 8 pm edt this evening - .
This afternoon - SW winds 10 kt with gusts to 20 kt. Waves 1 ft. Showers and scattered tstms.
Tonight - SW winds 5 to 10 kt. Gusts up to 20 kt early in the evening. Waves 1 ft. Showers with a chance of tstms. Patchy fog. Vsby 1 nm or less.
Thu - SW winds around 5 kt. Waves 1 ft.
Thu night - W winds around 5 kt. Waves 1 ft. A chance of showers and tstms.
Fri - W winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms.
Fri night - NW winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Sat - NW winds around 5 kt. Waves 1 ft or less.
Sun - SW winds 5 to 10 kt. Waves 1 ft. A chance of showers through the night.
winds and waves higher and visibilities lower in and near tstms.
winds and waves higher and visibilities lower in and near tstms.
ANZ500 119 Pm Edt Wed Jun 10 2026
Synopsis for the tidal potomac and md portion of the chesapeake bay -
a surface trough will linger west of the waters near the blue ridge mountains this afternoon before drifting southeastward across the waters tonight into Thursday. This trough may ignite multiple rounds of showers and Thunderstorms. A cold front brings potential for more widespread strong Thunderstorms Friday into Friday night. Small craft advisories may be needed in the wake of the front Friday night into Saturday morning. High pressure looks to return for at least the first half of this weekend resulting in lower rain chances before another frontal system approaches early next week. Small craft advisories may be needed in southerly channeling Sunday, though there is uncertainty in the timing of the arrival of the next front.
a surface trough will linger west of the waters near the blue ridge mountains this afternoon before drifting southeastward across the waters tonight into Thursday. This trough may ignite multiple rounds of showers and Thunderstorms. A cold front brings potential for more widespread strong Thunderstorms Friday into Friday night. Small craft advisories may be needed in the wake of the front Friday night into Saturday morning. High pressure looks to return for at least the first half of this weekend resulting in lower rain chances before another frontal system approaches early next week. Small craft advisories may be needed in southerly channeling Sunday, though there is uncertainty in the timing of the arrival of the next front.
7 Day Forecast for Marine Location Near Brookmont, MD
NEW! Add second zone forecast
| Washington Click for Map Wed -- 02:08 AM EDT Moonrise Wed -- 03:50 AM EDT 3.27 feet High Tide Wed -- 05:42 AM EDT Sunrise Wed -- 11:00 AM EDT 0.71 feet Low Tide Wed -- 03:35 PM EDT Moonset Wed -- 04:24 PM EDT 2.92 feet High Tide Wed -- 08:32 PM EDT Sunset Wed -- 10:49 PM EDT 0.51 feet Low Tide Tide / Current data from XTide NOT FOR NAVIGATION |
Washington, Potomac River, DC, Tide feet
| 12 am |
| 1.1 |
| 1 am |
| 1.9 |
| 2 am |
| 2.7 |
| 3 am |
| 3.1 |
| 4 am |
| 3.3 |
| 5 am |
| 3.1 |
| 6 am |
| 2.6 |
| 7 am |
| 2.1 |
| 8 am |
| 1.5 |
| 9 am |
| 1.1 |
| 10 am |
| 0.8 |
| 11 am |
| 0.7 |
| 12 pm |
| 0.8 |
| 1 pm |
| 1.3 |
| 2 pm |
| 2 |
| 3 pm |
| 2.6 |
| 4 pm |
| 2.9 |
| 5 pm |
| 2.9 |
| 6 pm |
| 2.5 |
| 7 pm |
| 2 |
| 8 pm |
| 1.4 |
| 9 pm |
| 0.9 |
| 10 pm |
| 0.6 |
| 11 pm |
| 0.5 |
| Hains Point Click for Map Flood direction 359 true Ebb direction 176 true Wed -- 02:07 AM EDT 0.75 knots Max Flood Wed -- 02:08 AM EDT Moonrise Wed -- 05:18 AM EDT -0.00 knots Slack Wed -- 05:42 AM EDT Sunrise Wed -- 08:00 AM EDT -0.28 knots Max Ebb Wed -- 12:11 PM EDT 0.00 knots Slack Wed -- 02:35 PM EDT 0.26 knots Max Flood Wed -- 03:35 PM EDT Moonset Wed -- 04:21 PM EDT -0.00 knots Slack Wed -- 07:22 PM EDT -0.26 knots Max Ebb Wed -- 08:32 PM EDT Sunset Wed -- 10:52 PM EDT 0.00 knots Slack Tide / Current data from XTide NOT FOR NAVIGATION |
Hains Point, Potomac River, DC Current, knots
| 12 am |
| 0.5 |
| 1 am |
| 0.7 |
| 2 am |
| 0.8 |
| 3 am |
| 0.7 |
| 4 am |
| 0.4 |
| 5 am |
| 0.1 |
| 6 am |
| -0.1 |
| 7 am |
| -0.2 |
| 8 am |
| -0.3 |
| 9 am |
| -0.3 |
| 10 am |
| -0.2 |
| 11 am |
| -0.1 |
| 12 pm |
| -0 |
| 1 pm |
| 0.1 |
| 2 pm |
| 0.2 |
| 3 pm |
| 0.2 |
| 4 pm |
| 0.1 |
| 5 pm |
| -0.1 |
| 6 pm |
| -0.2 |
| 7 pm |
| -0.3 |
| 8 pm |
| -0.2 |
| 9 pm |
| -0.2 |
| 10 pm |
| -0.1 |
| 11 pm |
| 0 |
Area Discussion for Baltimore, MD/Washington
Hide HelpNOTE: mouseover dotted underlined text for definition
FXUS61 KLWX 101439 AFDLWX
Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 1039 AM EDT Wed Jun 10 2026
WHAT HAS CHANGED
The next round of heavy showers and embedded strong to severe thunderstorms will be arriving between 11am and 2pm for areas west of the Blue Ridge and from 2pm to 6pm east of the Blue Ridge to the Chesapeake Bay.
KEY MESSAGES
- 1) Hot and humid conditions return through Friday with a daily threat for strong to severe thunderstorms.
- 2) Drier conditions expected to start this weekend, before chances for showers and storms return by early next week.
DISCUSSION
KEY MESSAGE 1...Hot and humid conditions return through Friday with a daily threat for strong to severe thunderstorms.
A subtle shortwave will approach during the afternoon. Current CAPE values are in the 1500 J/kg realm east of the Alleghenies to the Shenandoah Valley with 20-30 knots of wind shear. The next area of heavy showers and strong thunderstorms will be crossing the Alleghenies in the next hour or so and result in an active afternoon for most from west to east. Damaging winds and hail could occur with strong to severe thunderstorms. Heavy downpours also may be imminent as precipitable water is in the 1.7 to 2 inch range west of the metros.
Low-level southwesterly flow will continue to advect a hot and humid airmass into the area for Thursday and Friday, with temperatures climbing into the 90s and dewpoints reaching into the upper 60s and lower 70s. This will result in heat indices climbing into the upper 90s to low 100s on both Thursday and Friday afternoon, likely nearing Heat Advisory criteria in some locations. Westerly downsloping winds may tend to lower dew points during peak heating, however.
Upper-level ridging will be centered over the Ohio/Tennessee Valleys Thursday, with several models also showing a shortwave disturbance passing through the top of the ridge. How this disturbance evolves will have a large impact on our forecast locally. If the timing/placement of any such disturbance is offset from peak heating, large scale subsidence could limit convective initiation. However, if it were to approach at/near peak heating, we could have a much greater coverage of thunderstorms. Upstream convection will likely have a large impact on how that disturbance evolves, so confidence in the forecast details on Thursday is lower than normal. Westerly downslope flow could inhibit convection as well, with the best initiation point closer to a surface trough or the bay breeze (I-95 corridor). What models are in good agreement about is that the background environment will be highly unstable. There will also be enough dry air in the mid levels to support strong downdrafts (high DCAPE), and just enough shear (around 20 kt)
to give storms some weak organization. Such an environmental setup is common in many of our more impactful summer pulse/multicell severe thunderstorm events. As a result, there appears to be a conditional threat for severe thunderstorms on Thursday, some of which could produce very strong winds if they do indeed develop and tap into the background environment.
That threat for severe thunderstorms likely continues on Friday as a shortwave disturbance passes to our northwest through the Great Lakes causing the upper ridge to break down and a surface cold front to approach from the northwest. With greater synoptic scale forcing, confidence in the occurrence of storms is higher on Friday, but instability might be slightly less (but still moderately strong). More widespread and potentially organized strong to severe thunderstorms appear possible as a result.
Machine learning guidance is very bullish on the severe thunderstorm threat for both Thursday and Friday. We will continue to monitor this potential threat over the upcoming days. Stay tuned to later forecast updates.
KEY MESSAGE 2...Drier conditions expected to start this weekend, before chances for showers and storms return by early next week.
Drier air moves into the region on Saturday in the wake of a cold front bringing down heat risk overall as dewpoints drop back down to the upper 50s and low 60s. Temperatures will still remain elevated overall with highs in the upper 80s and lower 90s likely.
Upper-level zonal flow temporarily takes over through the weekend, although a few afternoon showers or thunderstorms can't be ruled out Sunday as a cold front approaches from the west. There is uncertainty in exactly when this front gets here.
Starting early next week, a deep upper-level trough starts to track through the Great Lakes region and towards the East Coast, bringing back elevated humidity as a strong cold front moves through the region. Surface low pressure will likely move through the Mid-Atlantic by Tuesday/Wednesday, bringing more chances for widespread showers and possibly thunderstorms.
AVIATION /14Z WEDNESDAY THROUGH SUNDAY/
A disturbance will bring another round of scattered showers and thunderstorms during the afternoon. Otherwise, SW flow is expected through the day, generally 10 kt or less.
Some patchy fog may develop tonight in areas that receive more appreciable rain and see some clearing/lighter winds.
Prevailing VFR conditions are expected on both Thursday and Friday. Thunderstorm initiation/coverage is very uncertain Thursday afternoon and evening, but any storm could contain hail and strong wind gusts. There is a higher chance of strong to severe thunderstorms Friday afternoon and evening as a cold front approaches. Winds will be fairly light out of the west or southwest both days.
VFR conditions are predominantly expected through the weekend, with some reduced conditions possible on Sunday evening associated with a low chance of showers and thunderstorms.
Winds flow out of the NW before shifting S Sunday.
MARINE
Southerly flow remains in place through this evening. Small Craft Advisories may need to be extended/reissued in somewhat marginal but stubborn southerly channeling through tonight. The next round of showers and intense thunderstorms will move into the waters later in the mid to later afternoon. Activity should clear the waters early this evening. SMWs may be needed, mainly this afternoon.
Sub-SCA level winds are expected on both Thursday and Friday. A surface pressure trough lingering near the waters may cause some variability between south and west. Special Marine Warnings may be needed on both Thursday and Friday afternoon/evening as thunderstorms move over the waters. There is a higher chance of more widespread storms Friday, but the overall environment is favorable for very gusty storms either day.
SCA conditions are possible in the wake of a cold front Friday night into Saturday morning. Otherwise, sub-SCA conditions are expected through most of the weekend. Marginal SCAs may occur late Sunday in southerly flow as a cold front approaches.
Northwest winds may become variable for a time before ultimately shifting southeast by Monday morning.
CLIMATE
Temperatures are expected to soar to as much as 15 to 20 degrees above average Thursday and Friday. This approaches or exceeds daily record values at some sites.
Below is a list of record daily high and warm low temperatures for June 11th and 12th (Thursday and Friday).
================================================================= June 11th Record Daily Highs and Warm Lows ================================================================= Site Record High Record Warm Low DCA 101 F (set in 1911) 74 F (set in 2020 +6 others)
IAD 95 F (set in 2016) 72 F (set in 2005)
BWI 99 F (set in 1911) 75 F (set in 1914)
DMH 100 F (set in 1984) 79 F (set in 1984)
NAK 96 F (set in 2000) 79 F (set in 1973)
HGR 97 F (set in 1911) 73 F (set in 2005)
MRB 101 F (set in 1911) 71 F (set in 1927 and 1922)
CHO 99 F (set in 1911) 76 F (set in 2020)
================================================================= June 12th Record Daily Highs and Warm Lows ================================================================= Site Record High Record Warm Low DCA 95 F (set in 2017 +6 others) 77 F (set in 2015)
IAD 96 F (set in 1986) 72 F (set in 1986)
BWI 96 F (set in 1986 and 1914) 77 F (set in 1947)
DMH 96 F (set in 2025 +2 others) 77 F (set in 2017 and 2015)
NAK 98 F (set in 1914) 77 F (set in 2000 and 1973)
HGR 92 F (set in 2017 +5 others) 71 F (set in 2010 +5 others)
MRB 97 F (set in 1938 and 1933) 73 F (set in 1914)
CHO 98 F (set in 1914) 72 F (set in 1947 +2 others)
LWX WATCHES/WARNINGS/ADVISORIES
DC...None.
MD...Small Craft Advisory until 8 PM EDT this evening for MDZ008.
VA...None.
WV...None.
MARINE...Small Craft Advisory until 8 PM EDT this evening for ANZ530>543.
Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 1039 AM EDT Wed Jun 10 2026
WHAT HAS CHANGED
The next round of heavy showers and embedded strong to severe thunderstorms will be arriving between 11am and 2pm for areas west of the Blue Ridge and from 2pm to 6pm east of the Blue Ridge to the Chesapeake Bay.
KEY MESSAGES
- 1) Hot and humid conditions return through Friday with a daily threat for strong to severe thunderstorms.
- 2) Drier conditions expected to start this weekend, before chances for showers and storms return by early next week.
DISCUSSION
KEY MESSAGE 1...Hot and humid conditions return through Friday with a daily threat for strong to severe thunderstorms.
A subtle shortwave will approach during the afternoon. Current CAPE values are in the 1500 J/kg realm east of the Alleghenies to the Shenandoah Valley with 20-30 knots of wind shear. The next area of heavy showers and strong thunderstorms will be crossing the Alleghenies in the next hour or so and result in an active afternoon for most from west to east. Damaging winds and hail could occur with strong to severe thunderstorms. Heavy downpours also may be imminent as precipitable water is in the 1.7 to 2 inch range west of the metros.
Low-level southwesterly flow will continue to advect a hot and humid airmass into the area for Thursday and Friday, with temperatures climbing into the 90s and dewpoints reaching into the upper 60s and lower 70s. This will result in heat indices climbing into the upper 90s to low 100s on both Thursday and Friday afternoon, likely nearing Heat Advisory criteria in some locations. Westerly downsloping winds may tend to lower dew points during peak heating, however.
Upper-level ridging will be centered over the Ohio/Tennessee Valleys Thursday, with several models also showing a shortwave disturbance passing through the top of the ridge. How this disturbance evolves will have a large impact on our forecast locally. If the timing/placement of any such disturbance is offset from peak heating, large scale subsidence could limit convective initiation. However, if it were to approach at/near peak heating, we could have a much greater coverage of thunderstorms. Upstream convection will likely have a large impact on how that disturbance evolves, so confidence in the forecast details on Thursday is lower than normal. Westerly downslope flow could inhibit convection as well, with the best initiation point closer to a surface trough or the bay breeze (I-95 corridor). What models are in good agreement about is that the background environment will be highly unstable. There will also be enough dry air in the mid levels to support strong downdrafts (high DCAPE), and just enough shear (around 20 kt)
to give storms some weak organization. Such an environmental setup is common in many of our more impactful summer pulse/multicell severe thunderstorm events. As a result, there appears to be a conditional threat for severe thunderstorms on Thursday, some of which could produce very strong winds if they do indeed develop and tap into the background environment.
That threat for severe thunderstorms likely continues on Friday as a shortwave disturbance passes to our northwest through the Great Lakes causing the upper ridge to break down and a surface cold front to approach from the northwest. With greater synoptic scale forcing, confidence in the occurrence of storms is higher on Friday, but instability might be slightly less (but still moderately strong). More widespread and potentially organized strong to severe thunderstorms appear possible as a result.
Machine learning guidance is very bullish on the severe thunderstorm threat for both Thursday and Friday. We will continue to monitor this potential threat over the upcoming days. Stay tuned to later forecast updates.
KEY MESSAGE 2...Drier conditions expected to start this weekend, before chances for showers and storms return by early next week.
Drier air moves into the region on Saturday in the wake of a cold front bringing down heat risk overall as dewpoints drop back down to the upper 50s and low 60s. Temperatures will still remain elevated overall with highs in the upper 80s and lower 90s likely.
Upper-level zonal flow temporarily takes over through the weekend, although a few afternoon showers or thunderstorms can't be ruled out Sunday as a cold front approaches from the west. There is uncertainty in exactly when this front gets here.
Starting early next week, a deep upper-level trough starts to track through the Great Lakes region and towards the East Coast, bringing back elevated humidity as a strong cold front moves through the region. Surface low pressure will likely move through the Mid-Atlantic by Tuesday/Wednesday, bringing more chances for widespread showers and possibly thunderstorms.
AVIATION /14Z WEDNESDAY THROUGH SUNDAY/
A disturbance will bring another round of scattered showers and thunderstorms during the afternoon. Otherwise, SW flow is expected through the day, generally 10 kt or less.
Some patchy fog may develop tonight in areas that receive more appreciable rain and see some clearing/lighter winds.
Prevailing VFR conditions are expected on both Thursday and Friday. Thunderstorm initiation/coverage is very uncertain Thursday afternoon and evening, but any storm could contain hail and strong wind gusts. There is a higher chance of strong to severe thunderstorms Friday afternoon and evening as a cold front approaches. Winds will be fairly light out of the west or southwest both days.
VFR conditions are predominantly expected through the weekend, with some reduced conditions possible on Sunday evening associated with a low chance of showers and thunderstorms.
Winds flow out of the NW before shifting S Sunday.
MARINE
Southerly flow remains in place through this evening. Small Craft Advisories may need to be extended/reissued in somewhat marginal but stubborn southerly channeling through tonight. The next round of showers and intense thunderstorms will move into the waters later in the mid to later afternoon. Activity should clear the waters early this evening. SMWs may be needed, mainly this afternoon.
Sub-SCA level winds are expected on both Thursday and Friday. A surface pressure trough lingering near the waters may cause some variability between south and west. Special Marine Warnings may be needed on both Thursday and Friday afternoon/evening as thunderstorms move over the waters. There is a higher chance of more widespread storms Friday, but the overall environment is favorable for very gusty storms either day.
SCA conditions are possible in the wake of a cold front Friday night into Saturday morning. Otherwise, sub-SCA conditions are expected through most of the weekend. Marginal SCAs may occur late Sunday in southerly flow as a cold front approaches.
Northwest winds may become variable for a time before ultimately shifting southeast by Monday morning.
CLIMATE
Temperatures are expected to soar to as much as 15 to 20 degrees above average Thursday and Friday. This approaches or exceeds daily record values at some sites.
Below is a list of record daily high and warm low temperatures for June 11th and 12th (Thursday and Friday).
================================================================= June 11th Record Daily Highs and Warm Lows ================================================================= Site Record High Record Warm Low DCA 101 F (set in 1911) 74 F (set in 2020 +6 others)
IAD 95 F (set in 2016) 72 F (set in 2005)
BWI 99 F (set in 1911) 75 F (set in 1914)
DMH 100 F (set in 1984) 79 F (set in 1984)
NAK 96 F (set in 2000) 79 F (set in 1973)
HGR 97 F (set in 1911) 73 F (set in 2005)
MRB 101 F (set in 1911) 71 F (set in 1927 and 1922)
CHO 99 F (set in 1911) 76 F (set in 2020)
================================================================= June 12th Record Daily Highs and Warm Lows ================================================================= Site Record High Record Warm Low DCA 95 F (set in 2017 +6 others) 77 F (set in 2015)
IAD 96 F (set in 1986) 72 F (set in 1986)
BWI 96 F (set in 1986 and 1914) 77 F (set in 1947)
DMH 96 F (set in 2025 +2 others) 77 F (set in 2017 and 2015)
NAK 98 F (set in 1914) 77 F (set in 2000 and 1973)
HGR 92 F (set in 2017 +5 others) 71 F (set in 2010 +5 others)
MRB 97 F (set in 1938 and 1933) 73 F (set in 1914)
CHO 98 F (set in 1914) 72 F (set in 1947 +2 others)
LWX WATCHES/WARNINGS/ADVISORIES
DC...None.
MD...Small Craft Advisory until 8 PM EDT this evening for MDZ008.
VA...None.
WV...None.
MARINE...Small Craft Advisory until 8 PM EDT this evening for ANZ530>543.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| WASD2 - 8594900 - Washington, DC | 5 mi | 55 min | S 9.9G | 83°F | 78°F | 29.86 | ||
| APAM2 - 8575512 - Annapolis, MD | 33 mi | 55 min | ESE 9.9G | 78°F | 76°F | 29.87 | ||
| 44063 - Annapolis | 35 mi | 49 min | SSE 9.7G | 75°F | 75°F | 1 ft | ||
| TPLM2 - Thomas Point, MD | 35 mi | 85 min | SSE 9.9G | 75°F | 29.93 | 70°F | ||
| BCFM2 | 36 mi | 55 min | SW 11G | 84°F | 29.88 | |||
| 44080 | 37 mi | 49 min | SSW 9.7G | 83°F | 75°F | 29.93 | ||
| BLTM2 - 8574680 - Baltimore, MD | 37 mi | 55 min | SSW 4.1G | 86°F | 74°F | |||
| FSKM2 - 8574728 - Francis Scott Key Bridge, MD | 37 mi | 55 min | SW 9.9G | 83°F | 29.88 | |||
| CPVM2 | 38 mi | 55 min | 76°F | 76°F | ||||
| NCDV2 | 42 mi | 55 min | WSW 13G | 84°F | 78°F | 29.88 | ||
| 44062 - Gooses Reef, MD | 44 mi | 49 min | SW 5.8G | 77°F | 74°F | 1 ft |
Wind History for Washington, DC
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
| KDCA Ronald Reagan Washington National Airport US | 6 sm | 32 min | SW 08G21 | 10 sm | Mostly Cloudy | 90°F | 72°F | 56% | 29.86 | |
| KCGS College Park Airport US | 10 sm | 9 min | SSW 05 | 10 sm | Mostly Cloudy | 88°F | 72°F | 59% | 29.86 | |
| KADW Joint Base Andrews US | 14 sm | 29 min | SSW 14G22 | 10 sm | A Few Clouds | 90°F | 70°F | 52% | 29.86 | |
| KGAI Montgomery County Airpark US | 18 sm | 28 min | no data | -- | ||||||
| KIAD Washington Dulles International Airport US | 19 sm | 32 min | S 12G21 | 10 sm | Mostly Cloudy | 86°F | 73°F | 66% | 29.87 | |
| KFME Fort Meade Executive Airport US | 21 sm | 9 min | S 06 | 10 sm | -- | 86°F | 73°F | 66% | 29.88 |
Link to 5 hour of 5 minute data for KDCA
Terminal Aerodrome Forecast (TAF) for KDCA
Wind History Graph: DCA
(wind in knots)
GEOS Local Image of Mid-Atlantic
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Sterling, VA,
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