Tuesday, January26, 2021
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Marine Weather and Tides
North Beach, MD

Version 3.4
NOTICE
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 7:15AMSunset 5:22PM Tuesday January 26, 2021 11:47 PM EST (04:47 UTC) Moonrise 3:13PMMoonset 5:46AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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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ANZ532 Chesapeake Bay From Sandy Point To North Beach- 940 Pm Est Tue Jan 26 2021
Rest of tonight..W winds 5 to 10 kt. Waves 1 ft or less. Patchy fog. Vsby 1 to 3 nm...decreasing to 1 nm or less.
Wed..NW winds 5 to 10 kt. Waves 2 ft. Patchy fog. Vsby 1 to 3 nm.
Wed night..N winds 15 to 20 kt. Gusts up to 20 kt...increasing to 25 kt after midnight. Waves 2 to 3 ft.
Thu..NW winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft.
Thu night..NW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
Fri..NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
Fri night..NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Sat..NE winds 5 to 10 kt. Waves 1 ft.
Sun..NE winds 5 to 10 kt. Waves 1 ft. A chance of snow. A chance of rain.
ANZ500 940 Pm Est Tue Jan 26 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. Low pressure will move offshore today. High pressure will briefly return Wednesday, but low pressure may impact the waters Wednesday night and Thursday. High pressure will return late in the week. Small craft advisories will be required for portions of the waters Wednesday night through Friday, with the potential for gales on Thursday, possibly into Friday morning.


7 Day Forecast for Marine Location Near North Beach, MD
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location: 38.73, -76.53     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 270230 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 930 PM EST Tue Jan 26 2021

SYNOPSIS. High pressure will briefly return by Wednesday, but an area of low pressure will graze the area to the south Wednesday night into Thursday. High pressure will briefly return again Friday into Saturday before another storm system approaches for late in the weekend into early next week.

NEAR TERM /THROUGH WEDNESDAY/. Moisture has continued to linger in the lower atmosphere as sampled well by the 00Z upper air from KIAD. It is relatively shallow in nature, generally in the lowest 100 mb (2,000 to 2,500 feet). Consequently, patchy fog has begun to develop in vast sections of northern/central Maryland as well as over areas of northern/central Virginia. While much of this fog has concentrated east of the Blue Ridge and Catoctin Mountains, lower visibility is being observed along I-81. Dense Fog Advisories have been hoisted up response with areas of freezing fog possible as well where surface temperatures continue to hover near freezing. Fog concerns should remain an issue until 9 AM Wednesday. Overnight road conditions are likely to be quite slick with patchy black ice possible as well.

Farther to the west, patchy freezing drizzle, light snow or freezing fog are possible along and west of the Allegheny Front as a weak disturbance interacts with the terrain and lingering moisture overnight.

SHORT TERM /WEDNESDAY NIGHT THROUGH THURSDAY NIGHT/. High pressure will briefly pass near the region Wednesday, but an upper-level trough will approach by Wednesday evening. This trough will spawn a surface low pressure center well to our south, but forcing from the parent trough will likely result in some light snow across the foothills and adjacent valley/piedmont locations of west-central Virginia Wednesday night. Depending on if there is enough forcing and moisture to overcome lower-level dry air, a few flurries or a little light snow may make it as far north as the I-66/US-50 corridor in Virginia and up to near Baltimore in Maryland, but the probabilities here are much lower.

After low pressure departs to our south and east Thursday, a strong northwesterly flow will ensue. Blustery and cold conditions are expected with wind gusts in excess of 30 mph keeping wind chill temperatures in the teens and 20s all day.

LONG TERM /FRIDAY THROUGH TUESDAY/. On Friday, we'll be located between a strong area of low pressure over the Atlantic Ocean and high pressure building into the Great Lakes. Aloft, we'll have strong northwesterly flow, with a potent mid-level disturbance of Arctic origin diving southward off the New England Coast. This disturbance will drive a reinforcing surge of Arctic air into the region, with 850 hPa temps crashing to around, or possibly even below -15 C. Even in a well-mixed airmass, this would only yield daytime highs in the 20s to lower 30s across much of the area. In addition to the cold air, it will be very windy on Friday. Gusts in excess of 30 mph are possible, especially during the morning hours. As a result, wind chills may struggle to reach 20. Overall, it looks like Friday is shaping up to be one of, if not the coldest day we've had locally since 2019.

High pressure will build overhead Friday Night, setting the stage for an ideal radiational cooling night. Lows in the teens appear likely for most, with single digits possible in higher elevation mountain valleys. High pressure will slide offshore during the day Saturday, leading to another day of cold temperatures (highs in the 30s) and quiet weather conditions.

A complex weather system will approach the area during the Sunday into Monday time frame. Both deterministic and ensemble model guidance show a wide range of possible solutions, so confidence in the forecast details during that time period is low. However, with cold air initially in place and strong high pressure to the north, at least some wintry precipitation appears likely on the front end of the system (Sunday into Sunday Night). Looking beyond that initial surge of warm advection precipitation, confidence decreases substantially. Some solutions show a relatively minor event, while others (most notably the deterministic Euro) show a more significant winter storm. We'll continue to monitor this system over the upcoming days.

AVIATION /02Z WEDNESDAY THROUGH SUNDAY/. As moisture has become trapped in the lower levels underneath a developing inversion, fog has begun to develop in areas of the Mid-Atlantic. With little to no wind to chase these lower ceilings and fog out, IFR conditions are likely through the evening and into the early overnight hours. Dense fog is also possible, as is patchy black ice due to temperatures dropping to near or below freezing after 06z. Otherwise, a low ceiling at FL005-010 is forecast to persist through much of the night, and may even drop to LIFR.

Conditions should improve to VFR by midday Wednesday. A disturbance crossing the area may bring some spotty light snow Wednesday night into Thursday morning before clearing by Thursday afternoon. Otherwise, a northwesterly flow is anticipated with a few gusts of 15 to 25 knots possible.

VFR conditions are expected at the terminals on both Friday and Saturday. The wind will be gusty out of the northwest Friday.

MARINE. High pressure briefly building over the region should keep the wind light and variable through early Wednesday. There may be a few northwesterly gusts of 15 to 20 knots during the day on Wednesday as high pressure retreats, but the gradient overall looks marginal. There is a better chance of wind gusts picking up out of the northwest to 20 to 25 knots Wednesday night, increasing further on Thursday to near gale force.

Small Craft Advisories (SCAs) will likely be needed on Friday, with Gale Warnings a possibility. The wind should gradually subside to sub-SCA levels by Saturday morning.

TIDES/COASTAL FLOODING. Tides have become elevated earlier in the day as a result of the relatively calm winds. However, all tidal gauges maximized out at the Action Stage with water levels proceeding to drop overnight. An increasing northwesterly flow beginning early Wednesday will cause water levels to decrease.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . Dense Fog Advisory until 9 AM EST Wednesday for MDZ003>005-503- 505. VA . Dense Fog Advisory until 9 AM EST Wednesday for VAZ025-026-028- 030-031-036>040-051-052-501-502-505-506. WV . Dense Fog Advisory until 9 AM EST Wednesday for WVZ051>053. MARINE . None.

SYNOPSIS . DHOF NEAR TERM . BRO/DHOF SHORT TERM . DHOF LONG TERM . KJP AVIATION . BRO/DHOF/KJP MARINE . DHOF/KJP TIDES/COASTAL FLOODING . BRO/DHOF


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BSLM2 - Chesapeake Bay, MD 10 mi557 min ENE 1 35°F 1009 hPa35°F
TPLM2 - Thomas Point, MD 13 mi527 min NNW 4.1 G 5.1 35°F 39°F1010.7 hPa (-1.7)35°F
44062 - Gooses Reef, MD 13 mi515 min NNE 5.8 G 7.8 36°F 41°F991.5 hPa
APAM2 - 8575512 - Annapolis, MD 18 mi527 min NW 1.9 G 2.9 36°F 39°F1009.3 hPa (-2.1)
CPVM2 20 mi527 min 36°F 35°F
COVM2 - 8577018 - Cove Point LNG Pier, MD 24 mi527 min NNW 6 G 8 36°F 1010.5 hPa
CA2 - 8571892 - Cambridge, MD 27 mi527 min WNW 5.1 G 7 37°F 38°F1009.8 hPa (-2.1)
WASD2 - 8594900 - Washington, DC 28 mi527 min NE 1 G 2.9 36°F 39°F1010.6 hPa (-2.0)
SLIM2 - 8577330 - Solomons Island, MD 29 mi527 min NW 4.1 G 6 37°F 41°F1009.8 hPa (-1.7)
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 34 mi527 min ENE 1.9 G 2.9 35°F 1010 hPa (-2.2)
FSNM2 34 mi527 min NNE 2.9 G 5.1 35°F 1009.3 hPa (-2.2)
BLTM2 - 8574680 - Baltimore, MD 37 mi527 min E 1.9 G 6 35°F 40°F1009.5 hPa (-2.2)
TCBM2 - 8573364 - Tolchester Beach, MD 37 mi527 min Calm G 2.9 36°F 40°F1010.1 hPa (-1.9)
NCDV2 39 mi527 min NNW 1.9 G 1.9 37°F 39°F1009.7 hPa (-1.6)
PPTM2 - 8578240 - Piney Point, MD 41 mi527 min NW 8 G 8.9
BISM2 - 8571421 - Bishops Head, MD 44 mi527 min NNW 4.1 G 6 38°F 38°F1009.8 hPa (-1.6)
44042 - Potomac, MD 49 mi503 min WNW 7.8 G 7.8 38°F 41°F1010.8 hPa

Wind History for Cove Point LNG Pier, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Annapolis, United States Naval Academy, MD17 mi53 minN 03.00 miFog/Mist37°F37°F100%1012.4 hPa
Bay Bridge Field, MD20 mi52 minWSW 33.00 miFog/Mist37°F0°F%1012.2 hPa

Link to 5 minute data for KNAK

Wind History from NAK (wind in knots)
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Last 24hrNE5E6E6E4E4NE3CalmNE3E5N3NE4N4NE3N4N3N3NW3N6NW4NW4W3CalmCalmCalm
1 day agoCalmCalmCalmE3E4NE3E3E4NE4E6E6E5E3E5E4NE4NE5NE4E4E4E3E8NE7NE5
2 days agoNW7W5NW6NW7W5W6W7W5W6NW8NW7NW9NW6NW7NW5N3SE6NE3W3W3W3CalmCalmCalm

Tide / Current Tables for Rose Haven, Maryland
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Rose Haven
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Tue -- 01:35 AM EST     0.40 feet High Tide
Tue -- 05:45 AM EST     Moonset
Tue -- 07:16 AM EST     Sunrise
Tue -- 07:32 AM EST     -0.28 feet Low Tide
Tue -- 02:36 PM EST     0.92 feet High Tide
Tue -- 03:13 PM EST     Moonrise
Tue -- 05:21 PM EST     Sunset
Tue -- 09:45 PM EST     -0.02 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.40.40.30.2-0-0.2-0.3-0.3-0.200.30.60.80.90.90.80.70.50.30.10-00.1

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Tue -- 01:47 AM EST     0.00 knots Slack
Tue -- 03:54 AM EST     0.33 knots Max Flood
Tue -- 05:46 AM EST     Moonset
Tue -- 06:11 AM EST     -0.00 knots Slack
Tue -- 07:16 AM EST     Sunrise
Tue -- 09:07 AM EST     -0.50 knots Max Ebb
Tue -- 11:38 AM EST     0.00 knots Slack
Tue -- 03:11 PM EST     Moonrise
Tue -- 03:36 PM EST     1.12 knots Max Flood
Tue -- 05:19 PM EST     Sunset
Tue -- 07:10 PM EST     -0.00 knots Slack
Tue -- 10:33 PM EST     -1.01 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.6-0.20.10.30.30.20-0.2-0.4-0.5-0.4-0.20.10.50.91.11.10.90.60.1-0.4-0.8-1-1

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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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.