Cape St. Claire, MD Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Cape St. Claire, MD

April 17, 2024 6:25 PM EDT (22:25 UTC) Change Location
Sunrise 6:23 AM   Sunset 7:46 PM
Moonrise 12:51 PM   Moonset 2:48 AM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

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Marine Forecasts
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ANZ531 Chesapeake Bay From Pooles Island To Sandy Point- 433 Pm Edt Wed Apr 17 2024

Rest of this afternoon - SE winds 5 kt. Waves less than 1 ft. Scattered showers with isolated tstms.

Tonight - E winds 5 to 10 kt. Waves 1 ft. Scattered showers.

Thu - N winds 5 to 10 kt. Waves 1 ft.

Thu night - NE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.

Fri - SE winds 5 to 10 kt. Waves 1 ft. A chance of showers.

Fri night - S winds 5 kt - .becoming nw after midnight. Waves 1 ft. A chance of showers.

Sat - NW winds 10 to 15 kt. Waves 1 to 2 ft.

Sun - NW winds 5 to 10 kt. Waves 1 ft.
winds and waves higher and visibilities lower in and near tstms.

ANZ500 433 Pm Edt Wed Apr 17 2024

Synopsis for the tidal potomac and md portion of the chesapeake bay -
a stationary front will gradually return northward as a warm front today. This system is expected to stall nearby through late tonight before a cold front tracks through on Thursday morning. A stronger cold front approaches the region on Friday into Saturday morning. High pressure gradually pushes in from the west by late in the weekend. Small craft advisories may be needed at times from Thursday into the weekend.


7 Day Forecast for Marine Location Near Cape St. Claire, MD
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Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 171839 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 239 PM EDT Wed Apr 17 2024

SYNOPSIS
High pressure continues to move offshore as a series of fronts and low pressure systems begin to affect the East Coast today through the end of the week. High pressure looks to return for the weekend and the start of next week.

NEAR TERM /THROUGH THURSDAY/
Surface low pressure over the Great Lakes will continue to track to the north and east tonight. Meanwhile, a warm front extending out from that low will also continue to lift north through the region this evening. A secondary low will form over the southern Appalachians, will pass through Delmarva and southern New Jersey tonight, then will become nearly stationary offshore through Thursday.

The first wave of showers is moving through southern New Jersey.
Right around Cape May county, MUCAPE is around 500 J/kg, and there is some locally heavy rain and perhaps a rumble of thunder. Outside of that, MUCAPE is minimal, and showers are lighter. These showers should taper off in the next hour or so.

As the secondary low develops and moves across the southern portions of the forecast area, and showers will redevelop tonight. There will be a surge in low level moisture due to increasing onshore flow as well some some mid-level instability. MUCAPE values will rise back to as much as 500 to 1000 J/kg, and with a 30 to 40 kt LLJ, some additional thunderstorms are possible. Will cap thunder at chance across the region for the overnight period. Not expecting severe storms out of this, but a brief downpour and some lightning strikes can be expected.

With the low over the western Atlantic east of the New Jersey shore, onshore flow will keep rain, drizzle, and fog in the forecast for at least coastal New Jersey, and into northern New Jersey, and the eastern Lehigh Valley through Thursday. Elsewhere, it will be a cloudy and cool day.

Lows tonight will range from the low to mid 40s in the north to the mid 50s in Delmarva and highs on Thursday will generally be in the low to mid 50s, though it should be warmer in Delmarva, where it could get into the lower 70s.

SHORT TERM /THURSDAY NIGHT THROUGH SATURDAY/
Overall, the short term forecast remains largely unchanged. By Thursday night, the weak coastal low will be shunted south and eastward enough that surface high pressure can build in and briefly shutoff the chances for showers. Lows Thursday night look to fall into the 40s most everywhere across the region.

Following the brief respite from showers Thursday night, the next mid-level wave approaches the region on Friday. Latest guidance continues to indicate that the pre-existing high will be strong enough to hold off any precipitation through the morning. However, the approaching wave will eventually move in and bring yet another cold front across the region with the opportunity for more showers.
Chances for showers begin to increase Friday afternoon and look to peak Friday night. However, the front overall continues to look to be drier so chances for precip Friday night are now around 30-40 percent at most. Showers look to clear the region by late Friday night/early Saturday morning. Temperatures will rise into the upper 50s to low 60s during the on Friday before falling into the upper 40s to low 50s Friday night.

High pressure begins to nudge in on Saturday as the cold front moves offshore. With the exception of some lingering showers in the morning along the coast, everyone should be dry on Saturday with gradually clearing skies. Temperatures will get into the mid to upper 60s.

LONG TERM /SATURDAY NIGHT THROUGH TUESDAY/
The back half of the weekend and into early next week looks rather benign as high pressure continues to settle in on Saturday Night with the front from Friday stalling to the south of the region. Long range guidance is continuing to suggest that a system will slide by just to our south Sunday Night into Monday along the boundary.
Depending on exactly how far south the front stalls, this would potentially allow a few showers to leak back into the most southern portion of the region Sunday Night. Most of the deterministic guidance and ensembles keep the weak area of low pressure far enough south for everyone to stay dry however, and no mentionable PoPs are currently in the forecast. High pressure begins to settle in for Monday/Tuesday with quiet weather anticipated. Another system looks to come in around mid-week with some showers, but guidance varies quite a bit beyond Tuesday.

With the front to the south of the region though, temperatures will likely be below normal through Monday, with highs in the upper 50s/low 60s and overnight lows in the upper 30s/low 40s.
Temperatures look to moderate for the middle of next week, with a return to near normal temperatures.



AVIATION /19Z WEDNESDAY THROUGH MONDAY/
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas...

Tonight...MVFR by this evening, quickly lowering to IFR/LIFR. SHRA and BR will develop tonight, and cannot rule out a few TSRA. SHRA end late, but low CIGs and BR will persist and keep IFR/LIFR conds across the terminals. E winds 5 to 10 kt. Moderate confidence.

Thursday...IFR in the morning, gradually improving to MVFR in the afternoon. NE winds 10 to 15 kt. Low confidence.

Outlook...

Thursday Night...Sub-VFR conditions likely (50-70%) with stratus hanging around.

Friday through Friday Night...Sub-VFR conditions likely (50-70%)
with low clouds through most of Friday and scattered showers moving in Friday Night. Conditions lift to VFR by late Friday Night as a cold front comes through.

Saturday through Monday...VFR expected. Potentially gusty winds on Saturday afternoon.

MARINE
Sub-Small Craft Advisory conditions tonight, then onshore flow increases over the ocean waters on Thursday. A SCA remains in effect for the northern NJ ocean waters for E-NE winds 15 to 20 kt with gusts up to 25 kt and 4 to 6 ft seas for Thursday.

VSBY restrictions in fog and showers tonight, and then fog and light rain and drizzle will persist through Thursday. Cannot rule out a few thunderstorms tonight as well.

Outlook...

Thursday Night...Small Craft Advisory in effect through Thursday Night for coastal marine zones north of Cape Henlopen as seas will be around 5 to 6 feet. No marine headlines on the Delaware Bay or ANZ455.

Friday...Small Craft Advisory conditions possible (30-40%) for coastal waters north of Cape Henlopen as seas hover around 5 feet.
No marine headlines expected for the rest of the waters.

Friday Night through Monday...No marine headlines expected.

PHI WATCHES/WARNINGS/ADVISORIES
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...Small Craft Advisory from 6 AM Thursday to 6 AM EDT Friday for ANZ450-451.
Small Craft Advisory from 6 PM Thursday to 6 AM EDT Friday for ANZ452>454.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
44043 - Patapsco, MD 5 mi49 min E 9.7G12 61°F 59°F0 ft
CPVM2 7 mi55 min 65°F 61°F
44063 - Annapolis 10 mi43 min SSW 1.9G1.9 59°F 58°F0 ft
APAM2 - 8575512 - Annapolis, MD 10 mi55 min ESE 2.9G6 61°F 64°F29.91
TCBM2 - 8573364 - Tolchester Beach, MD 10 mi55 min E 1.9G2.9 65°F 29.94
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 13 mi55 min E 8G8.9 66°F
CBCM2 14 mi55 min E 6G8 65°F 61°F29.9059°F
TPLM2 - Thomas Point, MD 14 mi85 min ESE 8G8 60°F 29.96
BLTM2 - 8574680 - Baltimore, MD 17 mi55 min ESE 5.1G8 67°F 61°F
BSLM2 - Chesapeake Bay, MD 29 mi55 min SE 4.1 72°F 29.9261°F
44062 - Gooses Reef, MD 37 mi43 min S 5.8G9.7 58°F 58°F1 ft
CA2 - 8571892 - Cambridge, MD 39 mi55 min SE 9.9G12 69°F 61°F29.94
WASD2 - 8594900 - Washington, DC 39 mi55 min S 5.1G7 71°F 61°F29.91
CHCM2 - 8573927 - Chesapeake City, MD 42 mi55 min E 8G11 62°F 60°F29.98
COVM2 - 8577018 - Cove Point LNG Pier, MD 48 mi55 min E 9.9G11 60°F 29.93


Wind History for Tolchester Beach, MD
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KMTN MARTIN STATE,MD 17 sm32 minE 0410 smOvercast66°F59°F78%29.94
KBWI BALTIMORE/WASHINGTON INTL THURGOOD MARSHALL,MD 18 sm31 minSE 0810 smOvercast70°F59°F69%29.91
KFME TIPTON,MD 22 sm16 minSE 0810 smClear68°F59°F73%29.92
Link to 5 minute data for KW29


Wind History from W29
(wind in knots)
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Tide / Current for Baltimore (Chesapeake Bay), Maryland
   
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Baltimore (Chesapeake Bay)
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Wed -- 02:40 AM EDT     5.01 feet High Tide
Wed -- 03:48 AM EDT     Moonset
Wed -- 06:24 AM EDT     Sunrise
Wed -- 08:45 AM EDT     4.35 feet Low Tide
Wed -- 01:50 PM EDT     Moonrise
Wed -- 03:34 PM EDT     5.24 feet High Tide
Wed -- 07:45 PM EDT     Sunset
Wed -- 10:06 PM EDT     4.47 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Baltimore (Chesapeake Bay), Maryland, Tide feet
12
am
4.7
1
am
4.9
2
am
5
3
am
5
4
am
4.9
5
am
4.8
6
am
4.6
7
am
4.5
8
am
4.4
9
am
4.3
10
am
4.4
11
am
4.6
12
pm
4.8
1
pm
4.9
2
pm
5.1
3
pm
5.2
4
pm
5.2
5
pm
5.2
6
pm
5
7
pm
4.9
8
pm
4.7
9
pm
4.5
10
pm
4.5
11
pm
4.5



Tide / Current for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
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Wed -- 01:31 AM EDT     0.53 knots Max Flood
Wed -- 03:48 AM EDT     Moonset
Wed -- 04:33 AM EDT     -0.00 knots Slack
Wed -- 06:25 AM EDT     Sunrise
Wed -- 07:18 AM EDT     -0.46 knots Max Ebb
Wed -- 09:58 AM EDT     0.00 knots Slack
Wed -- 01:25 PM EDT     0.71 knots Max Flood
Wed -- 01:50 PM EDT     Moonrise
Wed -- 04:36 PM EDT     -0.00 knots Slack
Wed -- 07:45 PM EDT     Sunset
Wed -- 07:59 PM EDT     -0.80 knots Max Ebb
Wed -- 11:26 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Baltimore Harbor Approach, Maryland Current, knots
12
am
0.4
1
am
0.5
2
am
0.5
3
am
0.4
4
am
0.1
5
am
-0.1
6
am
-0.3
7
am
-0.4
8
am
-0.4
9
am
-0.3
10
am
0
11
am
0.3
12
pm
0.6
1
pm
0.7
2
pm
0.7
3
pm
0.5
4
pm
0.2
5
pm
-0.1
6
pm
-0.5
7
pm
-0.7
8
pm
-0.8
9
pm
-0.7
10
pm
-0.5
11
pm
-0.2




Weather Map
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GEOS Local Image of east us   
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