Marine Weather and Tide Forecast for Cape St. Claire, MD
April 27, 2024 6:41 AM EDT (10:41 UTC) Change Location
 | Sunrise 6:10 AM Sunset 7:56 PM Moonrise 11:10 PM Moonset 7:08 AM |
ANZ531 Chesapeake Bay From Pooles Island To Sandy Point- 446 Am Edt Sat Apr 27 2024
.small craft advisory in effect from this afternoon through late tonight - .
Rest of the overnight - SE winds 10 kt. Waves 1 ft.
Today - SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft. Scattered showers.
Tonight - S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Sun - S winds 5 to 10 kt. Waves 1 ft.
Sun night - SW winds 5 to 10 kt. Waves 1 ft.
Mon - SW winds 5 to 10 kt. Waves 1 ft.
Mon night - S winds 5 to 10 kt. Waves 1 ft.
Tue - SW winds 5 to 10 kt - .becoming nw after midnight. Waves 1 ft. A chance of showers in the afternoon. A chance of showers and tstms through the night.
Wed - NW winds 5 kt - .becoming se. Waves 1 ft.
winds and waves higher and visibilities lower in and near tstms.
winds and waves higher and visibilities lower in and near tstms.
ANZ500 446 Am Edt Sat Apr 27 2024
Synopsis for the tidal potomac and md portion of the chesapeake bay -
a warm front lifts through the area by Sunday bringing a significant warm up heading into early next week. Additional small craft advisories may be needed due to southerly channeling Sunday into early next week. The next substantial front to cross the waters looks to arrive by Tuesday bringing renewed chances for showers and Thunderstorms.
a warm front lifts through the area by Sunday bringing a significant warm up heading into early next week. Additional small craft advisories may be needed due to southerly channeling Sunday into early next week. The next substantial front to cross the waters looks to arrive by Tuesday bringing renewed chances for showers and Thunderstorms.
Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 270736 AFDPHI
Area Forecast Discussion National Weather Service Mount Holly NJ 336 AM EDT Sat Apr 27 2024
SYNOPSIS
Warm front arrives Saturday afternoon, bringing above normal temperatures for the rest of the weekend and into early next week.
High pressure will remain in control behind the front with low chances of showers and storms. A weak system will bring a more widespread chance of storms on Tuesday, although temperatures will remain above normal through much of next week.
NEAR TERM /THROUGH TONIGHT/
Latest satellite imagery shows some high clouds have filtered into the region a bit earlier than initially expected. As a result, our lows tonight are likely in jeopardy of not being realized by a few degrees in many spots. Only the NJ pine barrens have cooled substantially before high clouds have moved in. Some breaks in the clouds are moving eastward towards the region and could help cool a few spots. While generally expecting most locations outside the pine barrens to end up a few degrees warmer than the previous forecast, will maintain the Frost Advisory as is for now since some patchy frost remains possible in the most sheltered areas.
Increasing clouds during the day Saturday as a warm front approaches from the west and moves eastward through the region late this afternoon and into the evening. There will be some showers associated with this front as it arrives across eastern PA, but very dry low levels will help prevent much of it reaching the ground.
Still cannot rule out some isolated to scattered light showers mid to late afternoon, however, mainly for eastern PA, the Delmarva, and adjacent portions of NJ, roughly as far east as Trenton. The cloud cover will keep temperatures a bit cool with highs in the upper 50s to low 60s.
With the warm front passage and cloud coverage overhead, expecting a more seasonable Saturday night temperature-wise with lows in the mid to upper 40s (low 40s Poconos). The warm advection aloft should result in some isolated to scattered showers overnight, mainly near and north/east of Philly.
SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/
The story of the short term forecast will mainly be warm temperatures. An upper-level ridge axis over the eastern CONUS Sunday will slowly drift eastwards with time. Though this ridge axis may diminish in strength some later Monday into Monday night, high anomalous geopotential heights will prevail over the region through the end of the term. Meanwhile, at the surface level, high pressure systems will look to be centered off the coast of the Mid-Atlantic region and north of the Great Lakes region Sunday. With time, the high pressure off the Mid-Atlantic will look to slide southwards as the high pressure system well to our northwest slides eastwards.
Given the synoptic pattern and evolution described, the region will see strong warm air advection (WAA) during the short term leading to very warm temperatures. Highs mainly in the upper 70s to low 80s are in the forecast for Sunday. With even stronger WAA Sunday night and Monday many locations will see high temperatures in the mid to upper 80s Monday. Mesoscale wise, with synoptic winds forecast to only be 5-10 mph Monday, a strong sea breeze will probably develop. Coastal areas could see high temperatures approximately 10 degrees colder than most inland locations both Sunday and Monday. It will be interesting to see how far inland the sea breeze ends up penetrating Monday evening.
Otherwise, some shortwave energy could propagate through Sunday/Sunday night and Monday/Monday night. A few scattered showers and thunderstorms are possible for our northern and northwestern most areas Sunday afternoon/Sunday night and Monday afternoon/Monday night.
LONG TERM /TUESDAY THROUGH FRIDAY/
Fairly unsettled but not too overly impactful long term looks to be on the horizon. The upper-level ridge axis over the northeastern CONUS Tuesday looks to break down with time. Though the ensembles suggest another weaker ridge axis could build to our west while moving eastwards with time Tuesday night into Thursday, the overall upper-level pattern looks to become more zonal like and somewhat slow moving Tuesday night onwards. Weak trough looks to approach Tuesday and move through the region Tuesday/Tuesday night.
Otherwise, multiple rounds of shortwave energy and perhaps some weak surface boundaries hanging around or moving through could be in the cards.
Stuck with NBM PoPS for this forecast. Slight chance or chance of showers each day. Greatest chance for showers and thunderstorms is later Tuesday/Tuesday night time frame and Friday/Friday night time frame. Upper-level trough will look to come through Tuesday/Tuesday night with cold front at the surface. Another cold front passing through is possible Friday into Friday night.
Well above average temperatures expected to continue into Tuesday.
Above average temperatures likely Wednesday through the end of the term.
AVIATION /08Z SATURDAY THROUGH WEDNESDAY/
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas...
Rest of tonight (through 12Z)...VFR. East to southeast winds dropping to 5 kts or less. High confidence.
Saturday and Saturday night...VFR to start with increasing clouds.
MVFR cigs possible for ABE/RDG/TTN late afternoon and night with broken cigs around 5-7kft elsewhere. A few isolated showers may briefly bring sub-VFR visibilities as well, but coverage remains low. Southeast to south winds around 10 knots. Moderate confidence.
Outlook...
Sunday through Wednesday...Mainly VFR. Scattered showers/tstms possible each afternoon and evening, especially Tuesday.
MARINE
A few stronger wind gusts could develop across the upper Delaware Bay/lower Delaware River with SSE winds funneling and gusting to around 20 kts. Otherwise, conditions will remain below Small Craft Advisory levels through Saturday night with east to southeast winds generally around 10 knots and seas 2 to 4 feet.
Outlook...
Sunday through Wednesday...No marine headlines anticipated.
Scattered showers/tstms possible Tuesday afternoon/Tuesday night.
PHI WATCHES/WARNINGS/ADVISORIES
PA...Frost Advisory until 9 AM EDT this morning for PAZ060>062-103- 105-106.
NJ...Frost Advisory until 9 AM EDT this morning for NJZ001-007>010- 012-013-015>022-027.
DE...None.
MD...None.
MARINE...None.
Area Forecast Discussion National Weather Service Mount Holly NJ 336 AM EDT Sat Apr 27 2024
SYNOPSIS
Warm front arrives Saturday afternoon, bringing above normal temperatures for the rest of the weekend and into early next week.
High pressure will remain in control behind the front with low chances of showers and storms. A weak system will bring a more widespread chance of storms on Tuesday, although temperatures will remain above normal through much of next week.
NEAR TERM /THROUGH TONIGHT/
Latest satellite imagery shows some high clouds have filtered into the region a bit earlier than initially expected. As a result, our lows tonight are likely in jeopardy of not being realized by a few degrees in many spots. Only the NJ pine barrens have cooled substantially before high clouds have moved in. Some breaks in the clouds are moving eastward towards the region and could help cool a few spots. While generally expecting most locations outside the pine barrens to end up a few degrees warmer than the previous forecast, will maintain the Frost Advisory as is for now since some patchy frost remains possible in the most sheltered areas.
Increasing clouds during the day Saturday as a warm front approaches from the west and moves eastward through the region late this afternoon and into the evening. There will be some showers associated with this front as it arrives across eastern PA, but very dry low levels will help prevent much of it reaching the ground.
Still cannot rule out some isolated to scattered light showers mid to late afternoon, however, mainly for eastern PA, the Delmarva, and adjacent portions of NJ, roughly as far east as Trenton. The cloud cover will keep temperatures a bit cool with highs in the upper 50s to low 60s.
With the warm front passage and cloud coverage overhead, expecting a more seasonable Saturday night temperature-wise with lows in the mid to upper 40s (low 40s Poconos). The warm advection aloft should result in some isolated to scattered showers overnight, mainly near and north/east of Philly.
SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/
The story of the short term forecast will mainly be warm temperatures. An upper-level ridge axis over the eastern CONUS Sunday will slowly drift eastwards with time. Though this ridge axis may diminish in strength some later Monday into Monday night, high anomalous geopotential heights will prevail over the region through the end of the term. Meanwhile, at the surface level, high pressure systems will look to be centered off the coast of the Mid-Atlantic region and north of the Great Lakes region Sunday. With time, the high pressure off the Mid-Atlantic will look to slide southwards as the high pressure system well to our northwest slides eastwards.
Given the synoptic pattern and evolution described, the region will see strong warm air advection (WAA) during the short term leading to very warm temperatures. Highs mainly in the upper 70s to low 80s are in the forecast for Sunday. With even stronger WAA Sunday night and Monday many locations will see high temperatures in the mid to upper 80s Monday. Mesoscale wise, with synoptic winds forecast to only be 5-10 mph Monday, a strong sea breeze will probably develop. Coastal areas could see high temperatures approximately 10 degrees colder than most inland locations both Sunday and Monday. It will be interesting to see how far inland the sea breeze ends up penetrating Monday evening.
Otherwise, some shortwave energy could propagate through Sunday/Sunday night and Monday/Monday night. A few scattered showers and thunderstorms are possible for our northern and northwestern most areas Sunday afternoon/Sunday night and Monday afternoon/Monday night.
LONG TERM /TUESDAY THROUGH FRIDAY/
Fairly unsettled but not too overly impactful long term looks to be on the horizon. The upper-level ridge axis over the northeastern CONUS Tuesday looks to break down with time. Though the ensembles suggest another weaker ridge axis could build to our west while moving eastwards with time Tuesday night into Thursday, the overall upper-level pattern looks to become more zonal like and somewhat slow moving Tuesday night onwards. Weak trough looks to approach Tuesday and move through the region Tuesday/Tuesday night.
Otherwise, multiple rounds of shortwave energy and perhaps some weak surface boundaries hanging around or moving through could be in the cards.
Stuck with NBM PoPS for this forecast. Slight chance or chance of showers each day. Greatest chance for showers and thunderstorms is later Tuesday/Tuesday night time frame and Friday/Friday night time frame. Upper-level trough will look to come through Tuesday/Tuesday night with cold front at the surface. Another cold front passing through is possible Friday into Friday night.
Well above average temperatures expected to continue into Tuesday.
Above average temperatures likely Wednesday through the end of the term.
AVIATION /08Z SATURDAY THROUGH WEDNESDAY/
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas...
Rest of tonight (through 12Z)...VFR. East to southeast winds dropping to 5 kts or less. High confidence.
Saturday and Saturday night...VFR to start with increasing clouds.
MVFR cigs possible for ABE/RDG/TTN late afternoon and night with broken cigs around 5-7kft elsewhere. A few isolated showers may briefly bring sub-VFR visibilities as well, but coverage remains low. Southeast to south winds around 10 knots. Moderate confidence.
Outlook...
Sunday through Wednesday...Mainly VFR. Scattered showers/tstms possible each afternoon and evening, especially Tuesday.
MARINE
A few stronger wind gusts could develop across the upper Delaware Bay/lower Delaware River with SSE winds funneling and gusting to around 20 kts. Otherwise, conditions will remain below Small Craft Advisory levels through Saturday night with east to southeast winds generally around 10 knots and seas 2 to 4 feet.
Outlook...
Sunday through Wednesday...No marine headlines anticipated.
Scattered showers/tstms possible Tuesday afternoon/Tuesday night.
PHI WATCHES/WARNINGS/ADVISORIES
PA...Frost Advisory until 9 AM EDT this morning for PAZ060>062-103- 105-106.
NJ...Frost Advisory until 9 AM EDT this morning for NJZ001-007>010- 012-013-015>022-027.
DE...None.
MD...None.
MARINE...None.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| 44043 - Patapsco, MD | 5 mi | 48 min | SE 12G | 51°F | 58°F | 1 ft | ||
| CPVM2 | 7 mi | 54 min | 53°F | 38°F | ||||
| 44063 - Annapolis | 10 mi | 48 min | SE 9.7G | 51°F | 58°F | 1 ft | ||
| APAM2 - 8575512 - Annapolis, MD | 10 mi | 54 min | E 6G | 53°F | 64°F | 30.46 | ||
| TCBM2 - 8573364 - Tolchester Beach, MD | 10 mi | 54 min | E 1.9G | 49°F | 30.48 | |||
| FSKM2 - 8574728 - Francis Scott Key Bridge, MD | 13 mi | 54 min | SSE 8G | 53°F | ||||
| CBCM2 | 14 mi | 54 min | S 7G | 53°F | 59°F | 30.45 | 39°F | |
| TPLM2 - Thomas Point, MD | 14 mi | 42 min | ESE 9.9G | 52°F | 30.49 | |||
| BLTM2 - 8574680 - Baltimore, MD | 17 mi | 54 min | S 1G | 53°F | 60°F | |||
| BSLM2 - Chesapeake Bay, MD | 29 mi | 72 min | NE 1 | 50°F | 30.45 | 42°F | ||
| 44062 - Gooses Reef, MD | 37 mi | 48 min | SSE 14G | 50°F | 57°F | 1 ft | ||
| CA2 - 8571892 - Cambridge, MD | 39 mi | 54 min | SE 7G | 50°F | 60°F | 30.49 | ||
| WASD2 - 8594900 - Washington, DC | 39 mi | 54 min | SSE 4.1G | 53°F | 62°F | 30.46 | ||
| CHCM2 - 8573927 - Chesapeake City, MD | 42 mi | 54 min | 0G | 46°F | 60°F | 30.49 | ||
| COVM2 - 8577018 - Cove Point LNG Pier, MD | 48 mi | 54 min | ENE 14G | 53°F | 30.47 |
toggle option: (graph/table)
Airport Reports
EDIT (hide/show) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| KMTN MARTIN STATE,MD | 17 sm | 42 min | ESE 08 | 10 sm | Overcast | 52°F | 41°F | 67% | 30.49 | |
| KBWI BALTIMORE/WASHINGTON INTL THURGOOD MARSHALL,MD | 18 sm | 47 min | ESE 03 | 10 sm | Mostly Cloudy | 52°F | 39°F | 62% | 30.46 | |
| KFME TIPTON,MD | 22 sm | 12 min | calm | 10 sm | Overcast | 48°F | 41°F | 76% | 30.49 |
Baltimore (Chesapeake Bay)
Click for Map
Sat -- 02:47 AM EDT 4.33 feet Low Tide
Sat -- 06:11 AM EDT Sunrise
Sat -- 08:07 AM EDT Moonset
Sat -- 09:36 AM EDT 5.81 feet High Tide
Sat -- 05:24 PM EDT 4.37 feet Low Tide
Sat -- 07:55 PM EDT Sunset
Sat -- 10:07 PM EDT 4.91 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 02:47 AM EDT 4.33 feet Low Tide
Sat -- 06:11 AM EDT Sunrise
Sat -- 08:07 AM EDT Moonset
Sat -- 09:36 AM EDT 5.81 feet High Tide
Sat -- 05:24 PM EDT 4.37 feet Low Tide
Sat -- 07:55 PM EDT Sunset
Sat -- 10:07 PM EDT 4.91 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Baltimore (Chesapeake Bay), Maryland, Tide feet
| 12 am |
| 4.7 |
| 1 am |
| 4.5 |
| 2 am |
| 4.4 |
| 3 am |
| 4.3 |
| 4 am |
| 4.4 |
| 5 am |
| 4.6 |
| 6 am |
| 4.9 |
| 7 am |
| 5.3 |
| 8 am |
| 5.6 |
| 9 am |
| 5.8 |
| 10 am |
| 5.8 |
| 11 am |
| 5.7 |
| 12 pm |
| 5.4 |
| 1 pm |
| 5.2 |
| 2 pm |
| 4.9 |
| 3 pm |
| 4.7 |
| 4 pm |
| 4.5 |
| 5 pm |
| 4.4 |
| 6 pm |
| 4.4 |
| 7 pm |
| 4.5 |
| 8 pm |
| 4.7 |
| 9 pm |
| 4.8 |
| 10 pm |
| 4.9 |
| 11 pm |
| 4.9 |
Baltimore Harbor Approach
Click for Map
Sat -- 01:45 AM EDT -0.45 knots Max Ebb
Sat -- 04:13 AM EDT 0.00 knots Slack
Sat -- 06:11 AM EDT Sunrise
Sat -- 08:08 AM EDT Moonset
Sat -- 08:12 AM EDT 1.03 knots Max Flood
Sat -- 11:48 AM EDT -0.00 knots Slack
Sat -- 03:13 PM EDT -0.93 knots Max Ebb
Sat -- 07:17 PM EDT 0.00 knots Slack
Sat -- 07:54 PM EDT Sunset
Sat -- 09:22 PM EDT 0.29 knots Max Flood
Sat -- 11:40 PM EDT -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 01:45 AM EDT -0.45 knots Max Ebb
Sat -- 04:13 AM EDT 0.00 knots Slack
Sat -- 06:11 AM EDT Sunrise
Sat -- 08:08 AM EDT Moonset
Sat -- 08:12 AM EDT 1.03 knots Max Flood
Sat -- 11:48 AM EDT -0.00 knots Slack
Sat -- 03:13 PM EDT -0.93 knots Max Ebb
Sat -- 07:17 PM EDT 0.00 knots Slack
Sat -- 07:54 PM EDT Sunset
Sat -- 09:22 PM EDT 0.29 knots Max Flood
Sat -- 11:40 PM EDT -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Baltimore Harbor Approach, Maryland Current, knots
| 12 am |
| -0.2 |
| 1 am |
| -0.4 |
| 2 am |
| -0.4 |
| 3 am |
| -0.3 |
| 4 am |
| -0.1 |
| 5 am |
| 0.3 |
| 6 am |
| 0.6 |
| 7 am |
| 0.9 |
| 8 am |
| 1 |
| 9 am |
| 1 |
| 10 am |
| 0.7 |
| 11 am |
| 0.4 |
| 12 pm |
| -0.1 |
| 1 pm |
| -0.5 |
| 2 pm |
| -0.8 |
| 3 pm |
| -0.9 |
| 4 pm |
| -0.9 |
| 5 pm |
| -0.7 |
| 6 pm |
| -0.4 |
| 7 pm |
| -0.1 |
| 8 pm |
| 0.2 |
| 9 pm |
| 0.3 |
| 10 pm |
| 0.3 |
| 11 pm |
| 0.1 |
Dover AFB, DE,
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