Tuesday, July27, 2021
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Marine Weather and Tides
Stevensville, MD

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:01AMSunset 8:23PM Tuesday July 27, 2021 1:34 AM EDT (05:34 UTC) Moonrise 9:55PMMoonset 8:41AM Illumination 92% Phase: Waning Gibbous; Moon at 18 days in cycle
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.
Marine Forecasts
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ANZ540 Eastern Bay- 1038 Pm Edt Mon Jul 26 2021
Rest of tonight..SW winds 5 to 10 kt. |* insufficient grids for waveheight during (jul 27 21 02:00:00 gmt, jul 27 21 10:00:00 gmt)*|. Isolated showers and tstms late this evening.
Tue..W winds 5 kt. |* insufficient grids for waveheight during (jul 27 21 10:00:00 gmt, jul 27 21 22:00:00 gmt)*|.
Tue night..SW winds 5 kt. |* insufficient grids for waveheight during (jul 27 21 22:00:00 gmt, jul 28 21 10:00:00 gmt)*|.
Wed..NW winds 5 kt. |* insufficient grids for waveheight during (jul 28 21 10:00:00 gmt, jul 28 21 22:00:00 gmt)*|. A chance of showers.
Wed night..SE winds 5 kt. |* insufficient grids for waveheight during (jul 28 21 22:00:00 gmt, jul 29 21 10:00:00 gmt)*|.
Thu..S winds 5 to 10 kt. |* insufficient grids for waveheight during (jul 29 21 10:00:00 gmt, jul 29 21 22:00:00 gmt)*|. A chance of showers.
Thu night..SW winds 5 to 10 kt. |* insufficient grids for waveheight during (jul 29 21 22:00:00 gmt, jul 30 21 10:00:00 gmt)*|. A chance of showers and tstms.
Fri..N winds 5 to 10 kt. |* insufficient grids for waveheight during (jul 30 21 10:00:00 gmt, jul 31 21 10:00:00 gmt)*|. A chance of showers in the morning.
Sat..NW winds 5 to 10 kt...becoming s. |* insufficient grids for waveheight during (jul 31 21 10:00:00 gmt, aug 01 21 10:00:00 gmt)*|. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 1038 Pm Edt Mon Jul 26 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front will stall out over the carolinas through Tuesday night as weak high pressure builds back into the region. A weak front will drop across the waters Wednesday before a more potent cold front sweeps through the area Thursday into Friday. Small craft advisories may be required for portions of the waters Thursday through Friday.


7 Day Forecast for Marine Location Near Stevensville, MD
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location: 38.93, -76.28     debug


Area Discussion for - Philadelphia/Mount Holly, PA
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FXUS61 KPHI 262359 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 759 PM EDT Mon Jul 26 2021

SYNOPSIS. High pressure builds into the region tonight into early Tuesday. A couple of weak disturbances will cross the region late Tuesday and Wednesday. A stronger cold front will then arrive on Thursday. High pressure follows for Friday and Saturday, with the approach of another cold front possible by Sunday.

NEAR TERM /THROUGH TUESDAY/. Cold front has sunk through most of the forecast area and is just south of New Jersey, extending through central Delmarva. North of the front, surface dew points have dropped into the 50s and 60s. South of the front, dew points are still well in the 70s. Convection has tapered off, and with mid level dry air spreading into the region, that pretty much should be it for the night, but cannot rule out a few showers and/or storms through sunset or so.

Temps this evening should remain in the upper 60s to low 70s. With humidity levels still relatively high towards the coast and across DelMarVa, patchy fog certainly seems likely and MRi's from Bukfit soundings support this.

Heading into the day Tuesday, brief high pressure develops and skies should be mostly clear skies with northwesterly flow becoming westerly. With mostly clear skies and efficient heating, temperatures will warm to several degrees above normal sitting in the low to possibly mid 90s for most of the region with the mid 80s towards the higher terrain of the Poconos.

SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/. The short term period begins Tuesday night with a shortwave trough streaming in from the northwest. Ongoing convection should be making its way into eastern PA and northern NJ, but will be encountering a rather dry and increasingly unfavorable environment for maintenance of convection. This activity should thus wane in coverage in intensity and coverage into the evening hours. However, some showers or storms may be possible as far south as the I-95 corridor as the mid-level wave moves across the area into the overnight hours though.

Northwesterly flow will continue into Wednesday and some isolated to scattered convection is possible during the afternoon hours associated with another much weaker mid-level wave. The thermodynamics in place won't be particularly supportive of severe convection, thus the SPC has our area in a general thunderstorm risk. Any diurnal activity will diminish quickly into the evening.

Another more potent mid-level wave will approach the area on Thursday. Intensifying surface low pressure to our north along with an approaching frontal boundary from the northwest will result in low-level moisture return as the mean low-level flow turns southwesterly. This pattern could be quite favorable for a typical northwesterly flow MCS developing across the region, but the details and timing of this remain unclear.

Expect seasonable temperatures Wednesday and Thursday with high mostly in the 80s and lows in the 60s to around 70 degrees.

LONG TERM /THURSDAY NIGHT THROUGH MONDAY/. The long term period starts Thursday night into Friday with the primary synoptic trough axis moving offshore. This will bring a rather modest cold front across the region by mid-summer standards with low-level cool/dry air advection ramping up during the day Friday. Dewpoints are forecast to fall into the 50s amid a northwesterly breeze. A rather pleasant Friday and Saturday will result with temperatures below normal. Highs will be in the upper 70s to mid 80s with lows in the 50s to low 60s Friday night. Needless to say, the Friday-Saturday time frame looks dry.

Moisture and warm and return resumes Sunday as another trough axis approaches from the northwest. Chances for showers and thunderstorms appear to also return Sunday and into Monday.

AVIATION /00Z TUESDAY THROUGH SATURDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Tonight . Generally VFR. Patchy MVFR fog development possible after 06z especially at KMIV/KACY. I-95. Winds light and variable or calm. Moderate confidence.

Tuesday . VFR conditions are expected. Showers and thunderstorms will approach the TAF sites from the northwest, but will likely be weakening. Winds should initially be northwesterly turning westerly by mid day. A see breeze at ACY may result in southerly winds of 5 to 10 kt early in the afternoon. Moderate confidence.

Outlook .

Tuesday night . Isolated showers or thunderstorms possible north of PHL, otherwise mostly VFR. Winds westerly around 5 kts or less becoming more northwesterly after 06Z. Moderate confidence.

Wednesday . Prevailing VFR. Isolated to scattered showers and thunderstorms. North to northwesterly winds around 5 kts. Moderate confidence.

Thursday . Initially VFR with showers and thunderstorms developing during the afternoon or evening. Winds southwesterly around 5-10 kts. Moderate confidence.

Friday . VFR. Winds northwesterly around 10-15 kts. High confidence.

MARINE. Winds and seas should stay below SCA criteria through Tuesday. Southwest winds of 10 to 15 kt with seas 3 to 4 ft are expected through this evening with a thunderstorm possible in the early evening. Overnight winds weaken and seas drop as the winds eventually shift towards the northwest. By mid day Tuesday, winds will flip back around to out of the south with 1 to 2 ft seas.

Outlook .

Sub-advisory conditions are forecast through the remainder of the week. Northeasterly winds around 10 kts Wednesday will become south to southwesterly Thursday and increase to around 10-15 kts. Winds then become northwesterly for Friday around 10-15 kts. Seas 2-4 feet. Showers and thunderstorms possible, mainly Thursday.

Rip Currents .

Light offshore flow in the morning will become onshore in the afternoon both Tuesday and Wednesday. Seas will average 1 to 3 feet. As a result, there is a LOW risk for the development of dangerous rip currents at New Jersey and Delaware beaches both Tuesday and Wednesday.

PHI WATCHES/WARNINGS/ADVISORIES. PA . None. NJ . None. DE . None. MD . None. MARINE . None.

Synopsis . O'Brien/Staarmann Near Term . Deal/MPS Short Term . Staarmann Long Term . Staarmann Aviation . Deal/MPS/Staarmann Marine . Deal/Staarmann


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CPVM2 7 mi124 min 80°F 73°F
44063 - Annapolis 9 mi34 min NW 7.8 G 9.7 76°F 82°F1014.9 hPa (-0.3)
TPLM2 - Thomas Point, MD 9 mi34 min W 6 G 7 77°F 80°F1015.4 hPa (+0.0)73°F
APAM2 - 8575512 - Annapolis, MD 11 mi124 min Calm G 2.9 79°F 84°F1013.9 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 20 mi124 min ESE 1 G 1.9 78°F 83°F1014.3 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 24 mi124 min WNW 5.1 G 6 79°F 1014.2 hPa
FSNM2 24 mi124 min W 4.1 G 6 78°F 1014.3 hPa
BSLM2 - Chesapeake Bay, MD 25 mi64 min Calm 70°F 1014 hPa69°F
44062 - Gooses Reef, MD 27 mi34 min WSW 3.9 G 5.8 77°F 81°F1 ft1015.2 hPa (-0.0)
CA2 - 8571892 - Cambridge, MD 27 mi124 min SSW 1.9 G 2.9 81°F 84°F1014.1 hPa
BLTM2 - 8574680 - Baltimore, MD 28 mi124 min NW 1 G 1.9 81°F 83°F1013.9 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 37 mi124 min SW 6 G 9.9 81°F 1014.1 hPa
WASD2 - 8594900 - Washington, DC 39 mi124 min WNW 2.9 G 4.1 75°F 83°F1014.9 hPa
SLIM2 - 8577330 - Solomons Island, MD 43 mi124 min WSW 4.1 G 5.1 80°F 82°F1014.1 hPa
DRSD1 - Delaware Reserve, DE 46 mi64 min Calm 74°F 1014 hPa74°F
CHCM2 - 8573927 - Chesapeake City, MD 48 mi124 min WSW 1.9 G 2.9 73°F 83°F1014.3 hPa

Wind History for Tolchester Beach, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Annapolis, United States Naval Academy, MD11 mi40 minWNW 38.00 miFair77°F72°F85%1014.5 hPa
Easton / Newman Field, MD14 mi39 minN 010.00 miFair77°F76°F95%1015.6 hPa

Link to 5 minute data for KW29

Wind History from W29 (wind in knots)
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S7S6SE5SE4SE6SE6SE9SE10S6Calm
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2 days agoS3S6S5S7SE6CalmSE3NW3CalmCalmE3CalmSE4SE5S7S9S8S9S7W6S6S10
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Tide / Current Tables for Kent Island Narrows, Maryland
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Kent Island Narrows
Click for Map
Tue -- 02:07 AM EDT     0.46 feet Low Tide
Tue -- 06:01 AM EDT     Sunrise
Tue -- 08:14 AM EDT     1.98 feet High Tide
Tue -- 09:41 AM EDT     Moonset
Tue -- 03:23 PM EDT     0.51 feet Low Tide
Tue -- 08:20 PM EDT     Sunset
Tue -- 08:40 PM EDT     1.62 feet High Tide
Tue -- 10:55 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.50.50.50.81.11.51.821.91.71.51.20.90.60.50.50.711.41.61.61.51.3

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Tue -- 02:03 AM EDT     -0.69 knots Max Ebb
Tue -- 04:48 AM EDT     0.00 knots Slack
Tue -- 06:02 AM EDT     Sunrise
Tue -- 08:09 AM EDT     0.96 knots Max Flood
Tue -- 09:41 AM EDT     Moonset
Tue -- 11:20 AM EDT     -0.00 knots Slack
Tue -- 02:39 PM EDT     -1.04 knots Max Ebb
Tue -- 06:03 PM EDT     0.00 knots Slack
Tue -- 08:21 PM EDT     Sunset
Tue -- 09:01 PM EDT     0.81 knots Max Flood
Tue -- 10:55 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.3-0.6-0.7-0.6-0.30.10.50.810.90.60.2-0.3-0.7-1-1-0.8-0.5-00.40.70.80.70.4

Weather Map
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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