Marine Weather and Tide Forecast for Cape St. Claire, MD
April 27, 2024 1:08 AM EDT (05:08 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- 942 Pm Edt Fri Apr 26 2024
.small craft advisory in effect until 2 am edt Saturday - .
Rest of tonight - SE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Sat - SE winds 10 to 15 kt. Waves 1 to 2 ft. Scattered showers.
Sat night - 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 - S winds 5 to 10 kt - .becoming W after midnight. Waves 1 ft.
Wed - W winds 5 kt - .becoming s. Waves 1 ft.
ANZ500 942 Pm Edt Fri Apr 26 2024
Synopsis for the tidal potomac and md portion of the chesapeake bay -
surface high pressure moves south along the eastern appalachians through Saturday leading to cooler temperatures, increased cloud cover, and showers mainly west of the waters. A warm front lifts through the area by Sunday bringing a significant warm up heading into early next week. Additional small craft advisories will likely be needed for portions of the waters Saturday afternoon. Extensions 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.
surface high pressure moves south along the eastern appalachians through Saturday leading to cooler temperatures, increased cloud cover, and showers mainly west of the waters. A warm front lifts through the area by Sunday bringing a significant warm up heading into early next week. Additional small craft advisories will likely be needed for portions of the waters Saturday afternoon. Extensions 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 270136 AFDPHI
Area Forecast Discussion National Weather Service Mount Holly NJ 936 PM EDT Fri Apr 26 2024
SYNOPSIS
High pressure will remain in control of the prevailing conditions through early next week with low chances of showers and storms.
Below normal temperatures to start eventually rise above normal over the weekend. A weak system will be a more widespread chance of storms on Tuesday, although temperatures will remain above normal through much of next week.
NEAR TERM /THROUGH SATURDAY/
With clear skies and diminishing winds, temperatures are beginning to fall off and another chilly night is on tap. A warm front will approach from the south and west Saturday well ahead of a low pressure system moving through the upper midwestern states. The upshot of all this is that the weather will remain pretty quiet through the near term. Generally expect lows ranging from the mid 30s in the colder spots of eastern PA and interior NJ (where a Frost Advisory is in effect) to around 40 or so over the urban corridor of SE PA, Delmarva, and coastal NJ.
Saturday will start mainly clear with skies then clouding over through the late morning into the afternoon from west to east as the warm front approaches. There will be some showers associated with this front approaching from the west but I think they should be fizzling out as they reach eastern PA since the low levels will be fairly dry. As a result, we just mention isolated to scattered light showers in the forecast for Saturday afternoon over eastern PA and Delmarva extending into adjacent portions of NJ roughly as far east as around Trenton. The cloud cover will keep temperatures a bit cool with highs in the upper 50s to low 60s.
SHORT TERM /SATURDAY NIGHT THROUGH MONDAY/
The main story for Sunday into Monday will be the strengthening ridge across the East Coast. 500 mb heights look to increase to near 580 dam by Monday, values more typical of summertime. At the surface, high pressure will be centered offshore of the Carolinas, helping to advect warmer and more moist air into the region. The result will be much above normal temperatures. Saturday night will see lows nearer to normal though (mainly in the 40s), as this will be the transition time between airmasses. Cloud cover will also limit radiational cooling Saturday night, and winds will be from the south near 5-10 mph. The warm advection aloft should result in some isolated to scattered showers overnight, mainly near and north of Philly.
By Sunday, temperatures will rise well into the 70s to near 80 degrees in many interior locations. The limiting factor for temperatures Sunday will be how quickly the morning cloud cover clears out. The cloud cover looks to hang on the longest across the northern portions of the area, so areas north and east of a line from roughly Philly to Reading will likely stay in the mid 70s at best. Some isolated showers are possible in the Poconos, Lehigh Valley, and NW NJ, but the strong ridging aloft will likely hinder development. Lows Sunday night will be about 10-15 degrees above normal, mainly in the mid 50s to near 60 degrees with clearing skies.
Monday will be the warmest day of the stretch with high temperatures soaring into the mid 80s in most interior locations under partly cloudy skies. Highs in the more urbanized areas could top out in the upper 80s, though reading of 90 degrees or higher are unlikely. The northwest flow will add a downsloping component to the winds and thus also help to boost temperatures locally near the urban corridor. The offshore wind will also allow for a notable warmup even along the immediate coast, with highs getting to the low to mid 70s before the sea breeze kicks in. As the gradient flow weakens and shifts eventually to the southwest then south, the sea breeze will likely make significant inland progress into the I-95 corridor and perhaps even farther inland from there during the evening. This will cool temperatures off into the 70s and 60s by late evening.
Dewpoints will be near 60 degrees, so the Heat Index won't be much different than the air temperature on Monday. No heat headlines are anticipated.
LONG TERM /MONDAY NIGHT THROUGH FRIDAY/
The very warm weather that was in the short term part of the forecast spills over into the long term as the upper ridge that promotes it only gradually moves away later Monday and Tuesday.
Highs Tuesday will be a few degrees cooler than Monday (the warmest day of the whole forecast period) but still be in the upper 70s/low 80s most places. Temperatures will drop a few degrees Wed thru Friday but remain in the 70s for highs most places. Cooler temps for the southern Poconos and near the shore.
There are no widespread precipitation events foreseen during the long term. There is an opportunity for showers Tue/Tue night as shortwave energy rides up the backside of the retreating ridge. More showers are possible Thursday as an upper low and surface fronts arrive from the west. Pops during the Tue/Thu periods are in the slight chance or low chance range.
AVIATION /02Z SATURDAY THROUGH WEDNESDAY/
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas...
Tonight...VFR. East to southeast winds dropping to 5 kts or less. High confidence.
Saturday...VFR. Increasing clouds with broken cigs around 5 to 7 thousand feet by late day. Southeast to south winds around 10 knots. High confidence.
Outlook...
Saturday night through Monday...No significant weather expected.
Mainly VFR with winds near 5-10 kts.
Tuesday/Tuesday night... Mostly VFR. Scattered showers or tstms possible with lower CIGS/VSBYS.
Wednesday... Mostly VFR.
MARINE
Conditions will remain below Small Craft Advisory levels through Saturday with east to southeast winds generally around 10 knots and seas 2 to 4 feet.
Outlook...
Saturday night through Monday... No marine hazards expected.
Winds 10- 15 kts and seas 2-4 feet.
Tuesday... Scattered showers/tstms. Sub-SCA expected.
PHI WATCHES/WARNINGS/ADVISORIES
PA...Frost Advisory from 3 AM to 9 AM EDT Saturday for PAZ060>062- 103-105-106.
NJ...Frost Advisory from 3 AM to 9 AM EDT Saturday for NJZ001- 007>010-012-013-015>022-027.
DE...None.
MD...None.
MARINE...None.
Area Forecast Discussion National Weather Service Mount Holly NJ 936 PM EDT Fri Apr 26 2024
SYNOPSIS
High pressure will remain in control of the prevailing conditions through early next week with low chances of showers and storms.
Below normal temperatures to start eventually rise above normal over the weekend. A weak system will be a more widespread chance of storms on Tuesday, although temperatures will remain above normal through much of next week.
NEAR TERM /THROUGH SATURDAY/
With clear skies and diminishing winds, temperatures are beginning to fall off and another chilly night is on tap. A warm front will approach from the south and west Saturday well ahead of a low pressure system moving through the upper midwestern states. The upshot of all this is that the weather will remain pretty quiet through the near term. Generally expect lows ranging from the mid 30s in the colder spots of eastern PA and interior NJ (where a Frost Advisory is in effect) to around 40 or so over the urban corridor of SE PA, Delmarva, and coastal NJ.
Saturday will start mainly clear with skies then clouding over through the late morning into the afternoon from west to east as the warm front approaches. There will be some showers associated with this front approaching from the west but I think they should be fizzling out as they reach eastern PA since the low levels will be fairly dry. As a result, we just mention isolated to scattered light showers in the forecast for Saturday afternoon over eastern PA and Delmarva extending into adjacent portions of NJ roughly as far east as around Trenton. The cloud cover will keep temperatures a bit cool with highs in the upper 50s to low 60s.
SHORT TERM /SATURDAY NIGHT THROUGH MONDAY/
The main story for Sunday into Monday will be the strengthening ridge across the East Coast. 500 mb heights look to increase to near 580 dam by Monday, values more typical of summertime. At the surface, high pressure will be centered offshore of the Carolinas, helping to advect warmer and more moist air into the region. The result will be much above normal temperatures. Saturday night will see lows nearer to normal though (mainly in the 40s), as this will be the transition time between airmasses. Cloud cover will also limit radiational cooling Saturday night, and winds will be from the south near 5-10 mph. The warm advection aloft should result in some isolated to scattered showers overnight, mainly near and north of Philly.
By Sunday, temperatures will rise well into the 70s to near 80 degrees in many interior locations. The limiting factor for temperatures Sunday will be how quickly the morning cloud cover clears out. The cloud cover looks to hang on the longest across the northern portions of the area, so areas north and east of a line from roughly Philly to Reading will likely stay in the mid 70s at best. Some isolated showers are possible in the Poconos, Lehigh Valley, and NW NJ, but the strong ridging aloft will likely hinder development. Lows Sunday night will be about 10-15 degrees above normal, mainly in the mid 50s to near 60 degrees with clearing skies.
Monday will be the warmest day of the stretch with high temperatures soaring into the mid 80s in most interior locations under partly cloudy skies. Highs in the more urbanized areas could top out in the upper 80s, though reading of 90 degrees or higher are unlikely. The northwest flow will add a downsloping component to the winds and thus also help to boost temperatures locally near the urban corridor. The offshore wind will also allow for a notable warmup even along the immediate coast, with highs getting to the low to mid 70s before the sea breeze kicks in. As the gradient flow weakens and shifts eventually to the southwest then south, the sea breeze will likely make significant inland progress into the I-95 corridor and perhaps even farther inland from there during the evening. This will cool temperatures off into the 70s and 60s by late evening.
Dewpoints will be near 60 degrees, so the Heat Index won't be much different than the air temperature on Monday. No heat headlines are anticipated.
LONG TERM /MONDAY NIGHT THROUGH FRIDAY/
The very warm weather that was in the short term part of the forecast spills over into the long term as the upper ridge that promotes it only gradually moves away later Monday and Tuesday.
Highs Tuesday will be a few degrees cooler than Monday (the warmest day of the whole forecast period) but still be in the upper 70s/low 80s most places. Temperatures will drop a few degrees Wed thru Friday but remain in the 70s for highs most places. Cooler temps for the southern Poconos and near the shore.
There are no widespread precipitation events foreseen during the long term. There is an opportunity for showers Tue/Tue night as shortwave energy rides up the backside of the retreating ridge. More showers are possible Thursday as an upper low and surface fronts arrive from the west. Pops during the Tue/Thu periods are in the slight chance or low chance range.
AVIATION /02Z SATURDAY THROUGH WEDNESDAY/
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas...
Tonight...VFR. East to southeast winds dropping to 5 kts or less. High confidence.
Saturday...VFR. Increasing clouds with broken cigs around 5 to 7 thousand feet by late day. Southeast to south winds around 10 knots. High confidence.
Outlook...
Saturday night through Monday...No significant weather expected.
Mainly VFR with winds near 5-10 kts.
Tuesday/Tuesday night... Mostly VFR. Scattered showers or tstms possible with lower CIGS/VSBYS.
Wednesday... Mostly VFR.
MARINE
Conditions will remain below Small Craft Advisory levels through Saturday with east to southeast winds generally around 10 knots and seas 2 to 4 feet.
Outlook...
Saturday night through Monday... No marine hazards expected.
Winds 10- 15 kts and seas 2-4 feet.
Tuesday... Scattered showers/tstms. Sub-SCA expected.
PHI WATCHES/WARNINGS/ADVISORIES
PA...Frost Advisory from 3 AM to 9 AM EDT Saturday for PAZ060>062- 103-105-106.
NJ...Frost Advisory from 3 AM to 9 AM EDT Saturday 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 | 45 min | SE 18G | 51°F | 58°F | 1 ft | ||
| CPVM2 | 7 mi | 51 min | 52°F | 37°F | ||||
| 44063 - Annapolis | 10 mi | 45 min | SSE 14G | 50°F | 58°F | 1 ft | ||
| APAM2 - 8575512 - Annapolis, MD | 10 mi | 51 min | SE 5.1G | 53°F | 64°F | 30.48 | ||
| TCBM2 - 8573364 - Tolchester Beach, MD | 10 mi | 51 min | S 2.9G | 49°F | 30.49 | |||
| FSKM2 - 8574728 - Francis Scott Key Bridge, MD | 13 mi | 51 min | SSE 14G | 53°F | ||||
| CBCM2 | 14 mi | 51 min | S 12G | 54°F | 59°F | 30.46 | 33°F | |
| TPLM2 - Thomas Point, MD | 14 mi | 69 min | ESE 12G | 51°F | 30.50 | |||
| BLTM2 - 8574680 - Baltimore, MD | 17 mi | 51 min | SSE 5.1G | 54°F | 60°F | |||
| BSLM2 - Chesapeake Bay, MD | 29 mi | 99 min | SE 5.1 | 53°F | 30.48 | 38°F | ||
| 44062 - Gooses Reef, MD | 37 mi | 45 min | SE 16G | 48°F | 58°F | 1 ft | ||
| CA2 - 8571892 - Cambridge, MD | 39 mi | 51 min | SE 7G | 48°F | 60°F | 30.50 | ||
| WASD2 - 8594900 - Washington, DC | 39 mi | 51 min | SE 7G | 54°F | 62°F | 30.46 | ||
| CHCM2 - 8573927 - Chesapeake City, MD | 42 mi | 51 min | S 1.9G | 48°F | 61°F | 30.50 | ||
| COVM2 - 8577018 - Cove Point LNG Pier, MD | 48 mi | 51 min | ENE 11G | 50°F | 30.49 |
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 | 19 min | ESE 10 | 10 sm | Overcast | 52°F | 34°F | 50% | 30.50 | |
| KBWI BALTIMORE/WASHINGTON INTL THURGOOD MARSHALL,MD | 18 sm | 14 min | SSE 05 | 10 sm | Overcast | 54°F | 32°F | 44% | 30.46 | |
| KFME TIPTON,MD | 22 sm | 19 min | SE 05 | 10 sm | Overcast | 50°F | 32°F | 50% | 30.49 |
Baltimore (Chesapeake Bay)
Click for Map
Fri -- 02:15 AM EDT 4.35 feet Low Tide
Fri -- 06:12 AM EDT Sunrise
Fri -- 07:25 AM EDT Moonset
Fri -- 09:01 AM EDT 5.87 feet High Tide
Fri -- 04:37 PM EDT 4.44 feet Low Tide
Fri -- 07:54 PM EDT Sunset
Fri -- 09:22 PM EDT 4.99 feet High Tide
Fri -- 11:06 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 02:15 AM EDT 4.35 feet Low Tide
Fri -- 06:12 AM EDT Sunrise
Fri -- 07:25 AM EDT Moonset
Fri -- 09:01 AM EDT 5.87 feet High Tide
Fri -- 04:37 PM EDT 4.44 feet Low Tide
Fri -- 07:54 PM EDT Sunset
Fri -- 09:22 PM EDT 4.99 feet High Tide
Fri -- 11:06 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Baltimore (Chesapeake Bay), Maryland, Tide feet
| 12 am |
| 4.6 |
| 1 am |
| 4.4 |
| 2 am |
| 4.4 |
| 3 am |
| 4.4 |
| 4 am |
| 4.5 |
| 5 am |
| 4.8 |
| 6 am |
| 5.2 |
| 7 am |
| 5.5 |
| 8 am |
| 5.8 |
| 9 am |
| 5.9 |
| 10 am |
| 5.8 |
| 11 am |
| 5.6 |
| 12 pm |
| 5.3 |
| 1 pm |
| 5 |
| 2 pm |
| 4.8 |
| 3 pm |
| 4.6 |
| 4 pm |
| 4.5 |
| 5 pm |
| 4.4 |
| 6 pm |
| 4.6 |
| 7 pm |
| 4.7 |
| 8 pm |
| 4.9 |
| 9 pm |
| 5 |
| 10 pm |
| 5 |
| 11 pm |
| 4.8 |
Baltimore Harbor Approach
Click for Map
Fri -- 01:07 AM EDT -0.51 knots Max Ebb
Fri -- 03:40 AM EDT 0.00 knots Slack
Fri -- 06:12 AM EDT Sunrise
Fri -- 07:25 AM EDT Moonset
Fri -- 07:31 AM EDT 1.06 knots Max Flood
Fri -- 11:04 AM EDT -0.00 knots Slack
Fri -- 02:27 PM EDT -0.96 knots Max Ebb
Fri -- 06:24 PM EDT 0.00 knots Slack
Fri -- 07:54 PM EDT Sunset
Fri -- 08:34 PM EDT 0.34 knots Max Flood
Fri -- 10:56 PM EDT -0.00 knots Slack
Fri -- 11:06 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 01:07 AM EDT -0.51 knots Max Ebb
Fri -- 03:40 AM EDT 0.00 knots Slack
Fri -- 06:12 AM EDT Sunrise
Fri -- 07:25 AM EDT Moonset
Fri -- 07:31 AM EDT 1.06 knots Max Flood
Fri -- 11:04 AM EDT -0.00 knots Slack
Fri -- 02:27 PM EDT -0.96 knots Max Ebb
Fri -- 06:24 PM EDT 0.00 knots Slack
Fri -- 07:54 PM EDT Sunset
Fri -- 08:34 PM EDT 0.34 knots Max Flood
Fri -- 10:56 PM EDT -0.00 knots Slack
Fri -- 11:06 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Baltimore Harbor Approach, Maryland Current, knots
| 12 am |
| -0.4 |
| 1 am |
| -0.5 |
| 2 am |
| -0.4 |
| 3 am |
| -0.2 |
| 4 am |
| 0.1 |
| 5 am |
| 0.5 |
| 6 am |
| 0.8 |
| 7 am |
| 1 |
| 8 am |
| 1 |
| 9 am |
| 0.8 |
| 10 am |
| 0.5 |
| 11 am |
| 0 |
| 12 pm |
| -0.4 |
| 1 pm |
| -0.8 |
| 2 pm |
| -0.9 |
| 3 pm |
| -0.9 |
| 4 pm |
| -0.7 |
| 5 pm |
| -0.4 |
| 6 pm |
| -0.1 |
| 7 pm |
| 0.2 |
| 8 pm |
| 0.3 |
| 9 pm |
| 0.3 |
| 10 pm |
| 0.2 |
| 11 pm |
| -0 |
Dover AFB, DE,
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