Saturday, January23, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Stevensville, MD

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:17AMSunset 5:18PM Saturday January 23, 2021 12:04 PM EST (17:04 UTC) Moonrise 12:58PMMoonset 2:49AM Illumination 78% Phase: Waxing Gibbous; Moon at 10 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
    EDIT      (on/off)   Help
ANZ540 Eastern Bay- 943 Am Est Sat Jan 23 2021
.small craft advisory in effect through Sunday morning...
Rest of today..NW winds 20 kt with gusts to 30 kt. Waves 3 ft.
Tonight..NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Sun..W winds 5 to 10 kt. Waves 1 ft.
Sun night..S winds 5 kt. Waves flat.
Mon..E winds 5 to 10 kt. Waves 1 ft. Rain likely.
Mon night..E winds 10 kt with gusts to 20 kt. Waves 1 ft. Rain.
Tue..N winds 5 to 10 kt. Waves 1 ft. Rain in the morning, then a chance of rain through the night.
Wed..NE winds 5 to 10 kt. Waves 1 ft. A chance of snow through the night.
ANZ500 943 Am Est Sat Jan 23 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure over the midwest will build eastward through the weekend. Low pressure will impact the region early next week. Small craft advisories will likely be needed for portions of the waters through the weekend. Small craft advisories may be needed Monday into Tuesday.


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


Area Discussion for - Philadelphia/Mount Holly, PA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KPHI 230904 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 404 AM EST Sat Jan 23 2021

SYNOPSIS. High pressure centered in northern Illinois this morning will drift southeastward and it should pass off the North Carolina coast on Sunday evening. Weakening low pressure is forecast to move from Missouri on Monday to the upper Ohio River Valley on Tuesday, as a secondary low slides off the Middle Atlantic coast. High pressure is expected to nudge into our region from the north on Wednesday. Another low is anticipated to pass off the North Carolina coast on Thursday before moving farther out to sea. High pressure approaching from the west is expected to build across our region on Friday and Saturday.

NEAR TERM /THROUGH TONIGHT/. A cold day is in store along with a gusty wind. A northwesterly flow regime from the Midwest to the Northeast and Mid-Atlantic regions is forecast to amplify some in the East today. This is due to strong short wave energy carving out more of a trough today in the Northeast to Mid-Atlantic. Meanwhile, surface low pressure is forecast to be centered in the Canadian Maritimes with surface high pressure building east from the Midwest and Ohio Valley.

Our region will be between the two aforementioned surface systems resulting in a tight pressure gradient. Cold air advection increased last night and that continues for much of today, resulting in high temperatures in the 20's and 30's. There will be a notable breeze making it feel even colder, with wind chill values in the teens to lower 20s for the balance of the day (0-5F in the higher terrain of the Poconos). The forecast soundings indicate a favorable setup for deeper mixing especially by midday with winds of 30-40 mph available to mix down. The strongest winds may occur from mid-morning through mid-afternoon, then some relaxing of the pressure gradient and the cold air advection weakening some will result in less mixing late in the afternoon and early evening. As a result, the winds should settle as we start this evening.

Northwest flow today will direct lake effect snow bands toward especially northeastern Pennsylvania, however the advection of much drier air and a gradual lowering inversion should limit the southeastward extent of the bands (a few flurries still around very early this morning in parts of the area). Any snow showers or flurries particularly in the Pocono region may end up being confined to this morning as a result.

For tonight, surface high pressure builds closer however it is not forecast to settle right over our region and therefore we remain in an area of an established pressure gradient. Despite this, at least some decouple of the winds should occur tonight especially outside of the higher terrain as an inversion strengthens some. The extent of the winds will have an impact on temperature trends tonight, but either way many areas are forecast to drop into the teens tonight (wind chills still in play with some wind continuing).

SHORT TERM /SUNDAY THROUGH TUESDAY/. Surface high pressure sliding to our southwest and south will likely bring cold dry weather to our region for Sunday and Sunday night. Developing warm advection aloft is expected to bring and increase in mid and high level clouds from Sunday afternoon into Sunday evening.

An initial mid level short wave is forecast to be ejected out of the southwestern states over the weekend. It should reach the central Great Plains on Monday and the eastern Great Lakes late on Tuesday. A weakening surface low is expected to precede the feature with a secondary low developing in the Virginia and North Carolina vicinity before sliding off the coast and out to sea on Monday night and Tuesday.

Precipitation in advance of the complex system should begin to spread into our region from the southwest on Monday afternoon. The precipitation will likely continue into Monday night before gradually losing support aloft on Tuesday and and slowly dissipating.

The forecast temperature profiles continue to suggest mostly snow from the Interstate 78 Corridor northward, mainly rain for the Delmarva south of the canal and far southern New Jersey, and a wintry mix for areas between the two.

The system is not anticipated to have a great deal of moisture associated with it, limiting the snow and sleet accumulations. It appears as though most locations in eastern Pennsylvania, New Jersey and northern Delaware that receive snow will fall in the 1 to 3 inch range.

LONG TERM /TUESDAY NIGHT THROUGH FRIDAY/. A northerly wind is expected to bring an end to any lingering precipitation on Tuesday night, with dry weather and seasonable temperatures for Wednesday.

There remains a fair amount of variability in the way that the different guidance solutions are handling the main mid level trough coming out of the southwestern states on Tuesday. This continues to have implications on the eventual strength and track of another surface low that is forecast to pass off the North Carolina coast on Thursday. We will keep the mention of a chance of wintry precipitation for eastern Maryland, Delaware and southern New Jersey at that time. Depending on model trends over the coming days, we may need to expand the forecast of precipitation a bit farther to the north.

Once Thursday's system moves out to sea, it appears as though high pressure will build into our region from the west for Friday and Saturday.

AVIATION /09Z SATURDAY THROUGH WEDNESDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Today . VFR with a ceiling between 4000-6000 feet through at least this morning, then clouds should dissipate from southeast to northwest. Northwest winds 15-20 knots with gusts to around 30 knots (strongest winds should be in the 14-21z time frame). Moderate confidence.

Tonight . VFR. Northwest winds diminishing to around 10 knots in the evening. High confidence.

Outlook .

Sunday . VFR. Northwest wind 10 to 15 knots with gusts around 20 knots. High confidence.

Monday . Mainly VFR. Light wintry precipitation may spread into our region from the southwest during the afternoon. Conditions should deteriorate for Monday evening and Monday night in snow. The snow may mix with sleet and rain at KILG, KMIV and KACY. North to east wind 5 to 10 knots. Low to medium confidence.

Tuesday . MVFR and IFR conditions in snow around KRDG and KABE, a wintry mix of precipitation at KTTN, KPNE and KPHL, and mainly rain around KILG, KMIV and KACY. Northeast wind 5 to 10 knots. Low to medium confidence.

Wednesday . Mainly VFR. North wind 5 to 10 knots. Medium confidence.

MARINE. Gale Warning into this evening for all zones. Through tonight, strong northwest flow will result in surface gusts to gale force before diminishing some later this evening from south to north. Some light freezing spray may develop tonight given the gusty winds and colder air temperatures, however since water temperatures are still on the relatively milder side kept any mention as chance for now.

Outlook .

Sunday . Northwest wind 15 to 20 knots with gusts of 25 to 30 knots.

Monday . No marine headlines are anticipated.

Tuesday . Northeast wind 15 to 20 knot with gusts around 25 knots.

Wednesday . North wind 10 to 15 knots with gusts around 20 knots. Waves on our ocean waters may remain around 5 feet.

PHI WATCHES/WARNINGS/ADVISORIES. PA . None. NJ . None. DE . None. MD . None. MARINE . Gale Warning until 10 PM EST this evening for ANZ430-431- 450>455.

Synopsis . Iovino Near Term . Gorse Short Term . Iovino Long Term . Iovino Aviation . Gorse/Iovino Marine . Gorse/Iovino


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CPVM2 7 mi46 min 32°F 11°F
TPLM2 - Thomas Point, MD 9 mi64 min WNW 19 G 23 30°F 40°F1024.8 hPa (+3.0)6°F
APAM2 - 8575512 - Annapolis, MD 11 mi46 min 32°F 1023.2 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 20 mi64 min NW 19 G 22 30°F 38°F1023.9 hPa (+2.8)
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 24 mi46 min NNW 18 G 21 30°F 1023.5 hPa
FSNM2 24 mi58 min NW 26 G 30 29°F 1022.8 hPa
BSLM2 - Chesapeake Bay, MD 25 mi94 min NNW 9.9 31°F 1024 hPa11°F
44062 - Gooses Reef, MD 27 mi40 min NNW 21 G 25 32°F 41°F1003.7 hPa
CA2 - 8571892 - Cambridge, MD 27 mi46 min NW 21 G 26 32°F 40°F1022.8 hPa
BLTM2 - 8574680 - Baltimore, MD 28 mi46 min N 9.9 G 17 31°F 42°F1023.4 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 37 mi118 min NW 25 G 35 31°F 1023.7 hPa
WASD2 - 8594900 - Washington, DC 39 mi46 min N 11 G 19 31°F 40°F1025.1 hPa
SLIM2 - 8577330 - Solomons Island, MD 43 mi46 min NNW 18 G 23 33°F 42°F1023.3 hPa
CHCM2 - 8573927 - Chesapeake City, MD 48 mi46 min 38°F

Wind History for Tolchester Beach, MD
(wind in knots)    EDIT      (on/off)   Help
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
-12
PM
8
AM
9
AM
-12
PM
11
AM
Last
24hr
NW10
G14
NW6
NW15
NW11
NW16
G20
NW15
NW13
G18
NW11
G14
NW8
W11
G14
W13
G19
W14
G17
W10
G13
NW15
G19
N14
G17
NW15
N18
NW16
G22
NW15
NW20
NW22
G29
NW18
G22
1 day
ago
SW8
W4
W3
SW4
S3
G6
SE4
SW9
SW10
SW11
W11
G14
SW11
SW9
W10
G13
W6
W6
2 days
ago
NW22
G28
NW19
G23
NW19
G28
NW22
G27
NW17
NW14
G17
NW12
NW11
N10
N13
N11
S5
S4
G7
S6
S8
G12
S8
G13
SW11
G14

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Bay Bridge Field, MD4 mi69 minNW 15 G 2410.00 miMostly Cloudy30°F9°F40%1024 hPa
Annapolis, United States Naval Academy, MD11 mi70 minNW 14 G 2610.00 miA Few Clouds32°F10°F40%1024.1 hPa
Easton / Newman Field, MD14 mi69 minWNW 20 G 2810.00 miPartly Cloudy and Breezy34°F7°F32%1024.4 hPa

Link to 5 minute data for KW29

Wind History from W29 (wind in knots)
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
Last 24hrN8NW10NW11NW10
G15
NW10
G15
NW12
G19
NW8NW9
G15
NW10NW7NW5W10W8NW8NW9NW12
G17
NW11
G17
NW13
G21
NW12
G18
NW11
G17
NW16
G26
NW18
G26
NW14
G27
N13
G24
1 day agoSW11SW7SW4W3SE5SE3S5SW5CalmW4W5W8W9W3CalmW4W5SW4W3--W7W4W3NW6
2 days agoNW17NW16
G25
NW14
G22
NW18
G28
NW16
G24
NW14
G22
NW12NW10
G15
NW5NW5N6NE3CalmSE4CalmS3S5SE8S7S8--S7SW11SW7
G15

Tide / Current Tables for Kent Island Narrows, Maryland
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Kent Island Narrows
Click for Map
Sat -- 12:01 AM EST     0.60 feet High Tide
Sat -- 02:48 AM EST     Moonset
Sat -- 06:31 AM EST     -0.32 feet Low Tide
Sat -- 07:18 AM EST     Sunrise
Sat -- 12:57 PM EST     Moonrise
Sat -- 01:27 PM EST     1.05 feet High Tide
Sat -- 05:16 PM EST     Sunset
Sat -- 08:45 PM EST     0.14 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
0.60.50.40.2-0-0.2-0.3-0.3-0.20.10.40.70.91110.80.60.40.30.20.10.20.4

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
   EDIT      (on/off)   Help   One Week of Data
Baltimore Harbor Approach
Click for Map
Sat -- 01:09 AM EST     0.28 knots Max Flood
Sat -- 02:49 AM EST     Moonset
Sat -- 03:20 AM EST     -0.00 knots Slack
Sat -- 06:39 AM EST     -0.55 knots Max Ebb
Sat -- 07:18 AM EST     Sunrise
Sat -- 09:27 AM EST     0.00 knots Slack
Sat -- 12:58 PM EST     Moonrise
Sat -- 01:19 PM EST     0.98 knots Max Flood
Sat -- 05:00 PM EST     -0.00 knots Slack
Sat -- 05:16 PM EST     Sunset
Sat -- 08:15 PM EST     -0.79 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
0.20.30.20.1-0.2-0.4-0.5-0.5-0.4-0.20.20.50.810.90.70.4-0-0.4-0.7-0.8-0.7-0.6-0.3

Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station




Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. Google supplies the ads on this site. Because I do not track who you are, I cannot customize how these ads are served. They may be personalized to improve the ad experience. If you do not want personalized ads, please adjust the settings on the Google site HERE. NOTE: The best I can determine, this site is not subject to CCPA but I am doing my best to comply anyway.
Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.