Marine Weather and Tide Forecast for Stevensville, MD
 | Sunrise 5:39 AM Sunset 8:36 PM Moonrise 1:13 AM Moonset 3:38 PM |
ANZ540 Eastern Bay- 1034 Am Edt Sat Jun 21 2025
.small craft advisory in effect from 6 pm edt this evening through late tonight - .
Rest of today - SW winds 5 kt. Waves less than 1 ft.
Tonight - S winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Sun - SW winds 5 to 10 kt. Waves 1 ft.
Sun night - SW winds 5 to 10 kt. Waves 1 ft.
Mon - NW winds 5 kt. Waves flat.
Mon night - SW winds around 5 kt. Waves flat.
Tue - NW winds 5 kt. Waves flat.
Wed - N winds 5 kt. Waves flat.
ANZ500 1034 Am Edt Sat Jun 21 2025
Synopsis for the tidal potomac and md portion of the chesapeake bay -
a large area of high pressure will influence the area through at least Tuesday. A frontal boundary may approach from the north by Wednesday and Thursday. A small craft advisory may be needed for portions of the waters Sunday evening.
a large area of high pressure will influence the area through at least Tuesday. A frontal boundary may approach from the north by Wednesday and Thursday. A small craft advisory may be needed for portions of the waters Sunday evening.
7 Day Forecast for Marine Location Near Chester, MD
NEW! Add second zone forecast
| Kent Island Narrows Click for Map Sat -- 01:50 AM EDT 2.14 feet High Tide Sat -- 02:12 AM EDT Moonrise Sat -- 05:39 AM EDT Sunrise Sat -- 09:21 AM EDT 0.67 feet Low Tide Sat -- 01:36 PM EDT 1.27 feet High Tide Sat -- 04:37 PM EDT Moonset Sat -- 07:54 PM EDT 0.17 feet Low Tide Sat -- 08:34 PM EDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |
Kent Island Narrows, Maryland, Tide feet
| 12 am |
| 1.8 |
| 1 am |
| 2.1 |
| 2 am |
| 2.1 |
| 3 am |
| 2 |
| 4 am |
| 1.8 |
| 5 am |
| 1.5 |
| 6 am |
| 1.3 |
| 7 am |
| 1 |
| 8 am |
| 0.8 |
| 9 am |
| 0.7 |
| 10 am |
| 0.7 |
| 11 am |
| 0.9 |
| 12 pm |
| 1.1 |
| 1 pm |
| 1.2 |
| 2 pm |
| 1.3 |
| 3 pm |
| 1.1 |
| 4 pm |
| 0.9 |
| 5 pm |
| 0.6 |
| 6 pm |
| 0.4 |
| 7 pm |
| 0.2 |
| 8 pm |
| 0.2 |
| 9 pm |
| 0.3 |
| 10 pm |
| 0.6 |
| 11 pm |
| 1 |
| Baltimore Harbor Approach Click for Map Sat -- 01:53 AM EDT 1.13 knots Max Flood Sat -- 02:12 AM EDT Moonrise Sat -- 05:36 AM EDT -0.00 knots Slack Sat -- 05:40 AM EDT Sunrise Sat -- 08:46 AM EDT -0.85 knots Max Ebb Sat -- 12:34 PM EDT 0.00 knots Slack Sat -- 02:34 PM EDT 0.29 knots Max Flood Sat -- 04:37 PM EDT -0.00 knots Slack Sat -- 04:38 PM EDT Moonset Sat -- 07:59 PM EDT -0.67 knots Max Ebb Sat -- 08:34 PM EDT Sunset Sat -- 10:47 PM EDT 0.00 knots Slack Tide / Current data from XTide NOT FOR NAVIGATION |
Baltimore Harbor Approach, Maryland Current, knots
| 12 am |
| 0.8 |
| 1 am |
| 1 |
| 2 am |
| 1.1 |
| 3 am |
| 1 |
| 4 am |
| 0.7 |
| 5 am |
| 0.3 |
| 6 am |
| -0.2 |
| 7 am |
| -0.6 |
| 8 am |
| -0.8 |
| 9 am |
| -0.8 |
| 10 am |
| -0.7 |
| 11 am |
| -0.5 |
| 12 pm |
| -0.2 |
| 1 pm |
| 0.1 |
| 2 pm |
| 0.3 |
| 3 pm |
| 0.3 |
| 4 pm |
| 0.1 |
| 5 pm |
| -0.1 |
| 6 pm |
| -0.4 |
| 7 pm |
| -0.6 |
| 8 pm |
| -0.7 |
| 9 pm |
| -0.6 |
| 10 pm |
| -0.3 |
| 11 pm |
| 0.1 |
Area Discussion for Philadelphia/Mount Holly, PA
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FXUS61 KPHI 211503 AFDPHI
Area Forecast Discussion National Weather Service Mount Holly NJ 1103 AM EDT Sat Jun 21 2025
SYNOPSIS
High pressure across the western Atlantic builds westward this weekend and persists for the first half of next week, resulting in the return of the heat and humidity. The high may then settle more to the south and west Wednesday and Thursday.
NEAR TERM /THROUGH SUNDAY/
As of 1100 AM, temperatures have warmed into the low to mid 80s across much of the area. Some cumulus is starting to develop given the continued warming of the boundary layer, and some cirrus is present. The cirrus may actually increase some given cloud debris from ongoing convection in the eastern Great Lakes area. Given light southwesterly flow, a sea/bay breeze should be present today.
Otherwise, high pressure off the coast to our south will build through Sunday and beyond. Skies will be mostly clear most of the time with prevailing southwesterly winds of 5-10 mph today increasing to 10-15 mph Sunday, which will begin and then enhance warm air advection. A relatively subtle warm front will move northeast into the region today, which could spawn a stray shower or thunderstorm mainly in the Poconos. The front will mostly pass the region late tonight into early Sunday, though it could help provide a path for a convective complex some guidance shows passing mostly to the northeast of the region early Sunday. Beyond that, dry weather should prevail for the bulk of Sunday.
With the warm front moving into the region with southwesterly winds today, temps should warm several degrees above Friday's readings, with highs generally near or slightly above 90. Dew points will remain mostly in the low-mid 60s, so heat indices should be close to actual temperatures.
Tonight, with continued southwest flow, lows will be elevated, with much of the region failing to fall below 70. Dew points will creep up a few degrees, but remain mostly in the 60s.
Sunday is the first really hot day, with highs expected to rise into the mid-upper 90s for most. Dew points will also creep up, passing 70 in some areas. This will bring heat indices up to around 100 or a little higher for most. For simplicity's sake, we've decided to upgrade the Extreme Heat Watch to a warning starting Sunday, even though it won't quite reach warning criteria on Sunday. Also added a heat advisory for the Poconos where low-elevations will reach criteria. Southern areas, where criteria is higher, have left out of headlines until Monday.
SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY NIGHT/
Dangerously hot and humid conditions expected Monday and Tuesday.
Extreme Heat Warnings and Heat Advisories were issued. Around the Philadelphia area, temperatures could be the warmest in over a decade. Little relief overnight as temperatures Sunday, Monday, and Tuesday Night are expected to be around 75 to 80 degrees. Heat tends to have cumulative effects on the body and we are currently forecasting 4 consecutive days of 95+ with Monday and Tuesday likely to feature high temperatures around 100 and heat index values pushing 110 degrees. Take frequent breaks if outside, and drink plenty of fluids. Not much else to say to highlight the threat and main story of the upcoming week.
LONG TERM /WEDNESDAY THROUGH FRIDAY/
For Wednesday and Thursday...The upper-level ridge weakens a little bit and flattens out/erodes, especially on the northern periphery.
While the heat and humidity looks to continue, it may decrease at least some, especially Thursday and Friday with continued erosion of the northern side of the ridge. In addition, a surface trough may become better defined and introduce a bit more clouds and also the potential for at least some diurnally driven convection. There is a cold front that tries to slide southward on Wednesday but there is a decent amount of uncertainty with how far south the cold front makes it given the strength of the ridge. Due to this front, there is a slight chance to chance (15-30%) of showers and thunderstorms late Wednesday from the Philadelphia metro on north and west. Increased cloud cover will keep temperatures a touch cooler on Wednesday, but the Extreme Heat Warning remains in for northern Delaware, the Philadelphia metro, Lehigh Valley, and central/northern NJ.
Temperatures will be a few degrees cooler compared to Monday/Tuesday, but still in the mid to upper 90s, marking the 4th consecutive day of highs greater than 95 degrees.
As mentioned above, the ridge erodes a bit towards the end of the week with a signal for some troughing building in from the north that could lead to showers and thunderstorms both days to end the week. The temperatures look to still hold near 90 for most towards the end of next week with heat indices still in the 90s but this will be lower than earlier in the week.
AVIATION /15Z SATURDAY THROUGH WEDNESDAY/
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.
Rest of today...VFR. Southwest winds 5-10 knots. An isolated shower or thunderstorm cannot be ruled out this afternoon from about the KABE area on north and westward. Moderate confidence.
Tonight...VFR. Southwest winds less than 10 knots. Moderate confidence.
Sunday...VFR. Southwest winds increasing to 10-15 knots with some gusts up to 20 knots. Moderate confidence.
Outlook...
Sunday Night through Tuesday Night...VFR. No significant weather.
Wednesday...Primarily VFR, though slight chance of a shower/thunderstorm (15-20%) for the I-95 and Lehigh Valley terminals.
MARINE
No Marine headlines are expected through Sunday. Fair weather expected.
Outlook...
Sunday night through Wednesday...No marine headlines expected.
Rip Currents...
For today, light shore parallel/offshore flow and breaking waves of only 1 to 2 feet and a medium period, 8 second swell will result in a LOW risk for rip currents at all beaches.
For Sunday, shore parallel flow increases with 10-20 MPH winds and increasing breaking waves of 2 to 3 feet. With multiple swell groups as well, a MODERATE risk is in place for Cape May, Atlantic, and Ocean County beaches. For Monmouth County, NJ and Sussex County, DE, flow is more offshore oriented, resulting in a LOW risk for the development of rip currents.
For specific beach forecasts, visit weather.gov/beach/phi
CLIMATE
Potentially record breaking heat is expected across the area next week. Here are a look at the daily record high maximum and minimum temperature for all of our climate sites.
Record High Temperatures June 23 Site Record/Year Allentown (ABE) 96/2024 AC Airport (ACY) 98/1988 & 2024 AC Marina (55N) 91/1909 Georgetown (GED) 100/1988 Mount Pocono (MPO) 90/1954 Philadelphia (PHL) 98/2024 Reading (RDG) 98/2024 Trenton (TTN) 97/1894 Wilmington (ILG) 100/1894
Record Warmest Low Temperatures June 23 Site Record/Year Allentown (ABE) 71/2017 & 2024 AC Airport (ACY) 75/2024 AC Marina (55N) 74/2010 Georgetown (GED) 76/1988 Mount Pocono (MPO) 69/2024 Philadelphia (PHL) 76/1888 Reading (RDG) 77/2024 Trenton (TTN) 74/2017 & 2024 Wilmington (ILG) 75/2024
Record High Temperatures June 24 Site Record/Year Allentown (ABE) 98/1923 AC Airport (ACY) 99/2010 AC Marina (55N) 95/2002 Georgetown (GED) 97/2010 Mount Pocono (MPO) 92/1914 Philadelphia (PHL) 99/1923 Reading (RDG) 98/1908 & 1923 Trenton (TTN) 98/1894 Wilmington (ILG) 102/1894
Record Warmest Low Temperatures June 24 Site Record/Year Allentown (ABE) 71/2010 AC Airport (ACY) 72/1951, 2013, 2017 & 2024 AC Marina (55N) 72/1924, 2002, 2010, 2011, 2013 & 2020 Georgetown (GED) 74/2010 Mount Pocono (MPO) 66/1960, 1964 & 2002 Philadelphia (PHL) 75/1909, 1921, 1994 & 2020 Reading (RDG) 73/1909, 1994 & 2010 Trenton (TTN) 76/1894 & 2010 Wilmington (ILG) 74/1994
Record High Temperatures June 25 Site Record/Year Allentown (ABE) 98/1923 AC Airport (ACY) 96/1997 AC Marina (55N) 95/1952 Georgetown (GED) 96/1952 Mount Pocono (MPO) 91/1952 Philadelphia (PHL) 98/1952 Reading (RDG) 99/1943 Trenton (TTN) 99/1997 Wilmington (ILG) 98/1894
Record Warmest Low Temperatures June 25 Site Record/Year Allentown (ABE) 74/1923 & 1976 AC Airport (ACY) 80/1950 AC Marina (55N) 75/1997 & 2002 Georgetown (GED) 75/2019 Mount Pocono (MPO) 69/1952 Philadelphia (PHL) 76/1909, 1976 & 2002 Reading (RDG) 75/1943 & 1949 Trenton (TTN) 75/1976 Wilmington (ILG) 75/1976
PHI WATCHES/WARNINGS/ADVISORIES
PA...Extreme Heat Warning from 8 AM Sunday to 8 PM EDT Wednesday for PAZ060>062-070-071-101>106.
Heat Advisory from 8 AM Sunday to 8 PM EDT Tuesday for PAZ054- 055.
NJ...Extreme Heat Warning from 8 AM Sunday to 8 PM EDT Wednesday for NJZ001-007>010-012-013-015-017>020-027.
Heat Advisory from 8 AM Monday to 8 PM EDT Tuesday for NJZ014- 016-021>026.
DE...Extreme Heat Warning from 8 AM Sunday to 8 PM EDT Wednesday for DEZ001.
Heat Advisory from 8 AM Monday to 8 PM EDT Tuesday for DEZ002>004.
MD...Heat Advisory from 8 AM Monday to 8 PM EDT Tuesday for MDZ012- 015-019-020.
MARINE...None.
Area Forecast Discussion National Weather Service Mount Holly NJ 1103 AM EDT Sat Jun 21 2025
SYNOPSIS
High pressure across the western Atlantic builds westward this weekend and persists for the first half of next week, resulting in the return of the heat and humidity. The high may then settle more to the south and west Wednesday and Thursday.
NEAR TERM /THROUGH SUNDAY/
As of 1100 AM, temperatures have warmed into the low to mid 80s across much of the area. Some cumulus is starting to develop given the continued warming of the boundary layer, and some cirrus is present. The cirrus may actually increase some given cloud debris from ongoing convection in the eastern Great Lakes area. Given light southwesterly flow, a sea/bay breeze should be present today.
Otherwise, high pressure off the coast to our south will build through Sunday and beyond. Skies will be mostly clear most of the time with prevailing southwesterly winds of 5-10 mph today increasing to 10-15 mph Sunday, which will begin and then enhance warm air advection. A relatively subtle warm front will move northeast into the region today, which could spawn a stray shower or thunderstorm mainly in the Poconos. The front will mostly pass the region late tonight into early Sunday, though it could help provide a path for a convective complex some guidance shows passing mostly to the northeast of the region early Sunday. Beyond that, dry weather should prevail for the bulk of Sunday.
With the warm front moving into the region with southwesterly winds today, temps should warm several degrees above Friday's readings, with highs generally near or slightly above 90. Dew points will remain mostly in the low-mid 60s, so heat indices should be close to actual temperatures.
Tonight, with continued southwest flow, lows will be elevated, with much of the region failing to fall below 70. Dew points will creep up a few degrees, but remain mostly in the 60s.
Sunday is the first really hot day, with highs expected to rise into the mid-upper 90s for most. Dew points will also creep up, passing 70 in some areas. This will bring heat indices up to around 100 or a little higher for most. For simplicity's sake, we've decided to upgrade the Extreme Heat Watch to a warning starting Sunday, even though it won't quite reach warning criteria on Sunday. Also added a heat advisory for the Poconos where low-elevations will reach criteria. Southern areas, where criteria is higher, have left out of headlines until Monday.
SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY NIGHT/
Dangerously hot and humid conditions expected Monday and Tuesday.
Extreme Heat Warnings and Heat Advisories were issued. Around the Philadelphia area, temperatures could be the warmest in over a decade. Little relief overnight as temperatures Sunday, Monday, and Tuesday Night are expected to be around 75 to 80 degrees. Heat tends to have cumulative effects on the body and we are currently forecasting 4 consecutive days of 95+ with Monday and Tuesday likely to feature high temperatures around 100 and heat index values pushing 110 degrees. Take frequent breaks if outside, and drink plenty of fluids. Not much else to say to highlight the threat and main story of the upcoming week.
LONG TERM /WEDNESDAY THROUGH FRIDAY/
For Wednesday and Thursday...The upper-level ridge weakens a little bit and flattens out/erodes, especially on the northern periphery.
While the heat and humidity looks to continue, it may decrease at least some, especially Thursday and Friday with continued erosion of the northern side of the ridge. In addition, a surface trough may become better defined and introduce a bit more clouds and also the potential for at least some diurnally driven convection. There is a cold front that tries to slide southward on Wednesday but there is a decent amount of uncertainty with how far south the cold front makes it given the strength of the ridge. Due to this front, there is a slight chance to chance (15-30%) of showers and thunderstorms late Wednesday from the Philadelphia metro on north and west. Increased cloud cover will keep temperatures a touch cooler on Wednesday, but the Extreme Heat Warning remains in for northern Delaware, the Philadelphia metro, Lehigh Valley, and central/northern NJ.
Temperatures will be a few degrees cooler compared to Monday/Tuesday, but still in the mid to upper 90s, marking the 4th consecutive day of highs greater than 95 degrees.
As mentioned above, the ridge erodes a bit towards the end of the week with a signal for some troughing building in from the north that could lead to showers and thunderstorms both days to end the week. The temperatures look to still hold near 90 for most towards the end of next week with heat indices still in the 90s but this will be lower than earlier in the week.
AVIATION /15Z SATURDAY THROUGH WEDNESDAY/
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.
Rest of today...VFR. Southwest winds 5-10 knots. An isolated shower or thunderstorm cannot be ruled out this afternoon from about the KABE area on north and westward. Moderate confidence.
Tonight...VFR. Southwest winds less than 10 knots. Moderate confidence.
Sunday...VFR. Southwest winds increasing to 10-15 knots with some gusts up to 20 knots. Moderate confidence.
Outlook...
Sunday Night through Tuesday Night...VFR. No significant weather.
Wednesday...Primarily VFR, though slight chance of a shower/thunderstorm (15-20%) for the I-95 and Lehigh Valley terminals.
MARINE
No Marine headlines are expected through Sunday. Fair weather expected.
Outlook...
Sunday night through Wednesday...No marine headlines expected.
Rip Currents...
For today, light shore parallel/offshore flow and breaking waves of only 1 to 2 feet and a medium period, 8 second swell will result in a LOW risk for rip currents at all beaches.
For Sunday, shore parallel flow increases with 10-20 MPH winds and increasing breaking waves of 2 to 3 feet. With multiple swell groups as well, a MODERATE risk is in place for Cape May, Atlantic, and Ocean County beaches. For Monmouth County, NJ and Sussex County, DE, flow is more offshore oriented, resulting in a LOW risk for the development of rip currents.
For specific beach forecasts, visit weather.gov/beach/phi
CLIMATE
Potentially record breaking heat is expected across the area next week. Here are a look at the daily record high maximum and minimum temperature for all of our climate sites.
Record High Temperatures June 23 Site Record/Year Allentown (ABE) 96/2024 AC Airport (ACY) 98/1988 & 2024 AC Marina (55N) 91/1909 Georgetown (GED) 100/1988 Mount Pocono (MPO) 90/1954 Philadelphia (PHL) 98/2024 Reading (RDG) 98/2024 Trenton (TTN) 97/1894 Wilmington (ILG) 100/1894
Record Warmest Low Temperatures June 23 Site Record/Year Allentown (ABE) 71/2017 & 2024 AC Airport (ACY) 75/2024 AC Marina (55N) 74/2010 Georgetown (GED) 76/1988 Mount Pocono (MPO) 69/2024 Philadelphia (PHL) 76/1888 Reading (RDG) 77/2024 Trenton (TTN) 74/2017 & 2024 Wilmington (ILG) 75/2024
Record High Temperatures June 24 Site Record/Year Allentown (ABE) 98/1923 AC Airport (ACY) 99/2010 AC Marina (55N) 95/2002 Georgetown (GED) 97/2010 Mount Pocono (MPO) 92/1914 Philadelphia (PHL) 99/1923 Reading (RDG) 98/1908 & 1923 Trenton (TTN) 98/1894 Wilmington (ILG) 102/1894
Record Warmest Low Temperatures June 24 Site Record/Year Allentown (ABE) 71/2010 AC Airport (ACY) 72/1951, 2013, 2017 & 2024 AC Marina (55N) 72/1924, 2002, 2010, 2011, 2013 & 2020 Georgetown (GED) 74/2010 Mount Pocono (MPO) 66/1960, 1964 & 2002 Philadelphia (PHL) 75/1909, 1921, 1994 & 2020 Reading (RDG) 73/1909, 1994 & 2010 Trenton (TTN) 76/1894 & 2010 Wilmington (ILG) 74/1994
Record High Temperatures June 25 Site Record/Year Allentown (ABE) 98/1923 AC Airport (ACY) 96/1997 AC Marina (55N) 95/1952 Georgetown (GED) 96/1952 Mount Pocono (MPO) 91/1952 Philadelphia (PHL) 98/1952 Reading (RDG) 99/1943 Trenton (TTN) 99/1997 Wilmington (ILG) 98/1894
Record Warmest Low Temperatures June 25 Site Record/Year Allentown (ABE) 74/1923 & 1976 AC Airport (ACY) 80/1950 AC Marina (55N) 75/1997 & 2002 Georgetown (GED) 75/2019 Mount Pocono (MPO) 69/1952 Philadelphia (PHL) 76/1909, 1976 & 2002 Reading (RDG) 75/1943 & 1949 Trenton (TTN) 75/1976 Wilmington (ILG) 75/1976
PHI WATCHES/WARNINGS/ADVISORIES
PA...Extreme Heat Warning from 8 AM Sunday to 8 PM EDT Wednesday for PAZ060>062-070-071-101>106.
Heat Advisory from 8 AM Sunday to 8 PM EDT Tuesday for PAZ054- 055.
NJ...Extreme Heat Warning from 8 AM Sunday to 8 PM EDT Wednesday for NJZ001-007>010-012-013-015-017>020-027.
Heat Advisory from 8 AM Monday to 8 PM EDT Tuesday for NJZ014- 016-021>026.
DE...Extreme Heat Warning from 8 AM Sunday to 8 PM EDT Wednesday for DEZ001.
Heat Advisory from 8 AM Monday to 8 PM EDT Tuesday for DEZ002>004.
MD...Heat Advisory from 8 AM Monday to 8 PM EDT Tuesday for MDZ012- 015-019-020.
MARINE...None.
Wind History for Tolchester Beach, MD
toggle option: (graph/table)
Link to 1 hour of 5 minute data for KESN
Terminal Aerodrome Forecast (TAF) for KESN
Wind History Graph: ESN
(wind in knots)
GEOS Local Image of Mid-Atlantic
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