Wednesday, December11, 2019
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Marine Weather and Tides
Drum Point, MD

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:13AMSunset 4:48PM Wednesday December 11, 2019 7:03 AM EST (12:03 UTC) Moonrise 4:34PMMoonset 6:25AM Illumination 100% Phase: Full Moon; 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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ANZ542 Patuxent River To Broomes Island Md- 636 Am Est Wed Dec 11 2019
Today..NW winds 10 kt. Waves 1 ft. A chance of snow this morning with vsby 1 to 3 nm.
Tonight..N winds 5 to 10 kt. Waves 1 ft.
Thu..NE winds 5 to 10 kt. Waves 1 ft.
Thu night..NE winds around 5 kt. Waves 1 ft.
Fri..NE winds 5 kt. Waves less than 1 ft. Rain likely.
Fri night..E winds 5 to 10 kt. Waves 1 ft. Rain.
Sat..W winds 5 to 10 kt. Waves 1 ft. Showers likely through the day, then a chance of showers through the night.
Sun..NW winds 5 to 10 kt. Waves 1 ft.
ANZ500 636 Am Est Wed Dec 11 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build across the region today through Thursday. Low pressure system developing over the northern gulf of mexico will move northeastward toward the region Friday into Saturday. Small craft advisories may be needed Saturday.


7 Day Forecast for Marine Location Near Drum Point CDP, MD
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location: 38.32, -76.45     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 110901 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 401 AM EST Wed Dec 11 2019

SYNOPSIS. Canadian high pressure will build across the region today through Thursday. A low pressure system will then develop in the Gulf of Mexico and push northward across the eastern United States Friday and Saturday.

NEAR TERM /THROUGH THURSDAY/. System is moving southeast away from the region. Dry air pushing southeastward is generally overwhelming the forcing of the jet streak aloft, such that even much of the radar echoes currently present north and west of our office in Sterling appear to be virga. Will allow Winter Weather Advisory to linger a bit longer where criteria is lower in the metro, but overall think this event is already mostly over in the advisory area. Further southeast, snow may continue a bit longer, but it appears it will clear most if not all of the forecast area by sunrise.

High pressure from Canada will then build across the region for tonight and Thursday. The air mass is chilly, but not excessively or unusually cold for this time of year, with readings perhaps approaching 10 degrees below normal . a range which is quite normal this time of year. Lows tonight may reach the teens in the cold spots, so not even the coldest it has been so far this year, and highs today and tomorrow should be in the upper 30s to low 40s, with Thursday ending up a bit colder than today. However, the wind chill will be more significant today, so between that and the sudden change compared to yesterday, today will feel like the less pleasant day.

SHORT TERM /THURSDAY NIGHT THROUGH FRIDAY NIGHT/. The Canadian high pressure will slide east off the coast Thursday night as low pressure develops along the Gulf Coast, then heads north. A wedge will remain, however, so cold air damming looks likely, especially Friday morning. Warm advection precip looks likely to overspread southwestern areas by mid- morning Friday, with the rest of the region likely seeing at least a bit of precip by day's end. The early arrival presents problems given the cold air mass in place, so freezing rain is a significant risk along the I-64 and I-81 corridors that we forecast for, stretching from Charlottesville to Staunton and perhaps as far north as Martinsburg. Further north and east, it appears more likely that temps will have a chance to rise above freezing before precip arrives, resulting in mostly or all plain rain. That all said, most precip Friday looks light, with the more significant rain moving in Friday night after temperatures are solidly above freezing (if only barely) across our entire area. Below freezing lows Thursday night will lead to highs in the 40s east of the mountains Friday, but 30s near I-81, with temps staying fairly steady Friday night with the rain.

LONG TERM /SATURDAY THROUGH TUESDAY/. Low pressure near the Delmarva Peninsula will lift northward into New England Saturday. Expect rain showers during the day. As an associated front makes its way to the East Coast by Saturday night, rain showers will taper to become more isolated. Some upslope rain or snow showers will develop in the Potomac Highlands in relation to the upper level low that is providing support to the departing surface low.

Upslope snow showers could linger in the Potomac Highlands on Sunday with a gusty northwest wind. Elsewhere, colder and drier air will filter into the central and eastern zones in part to high pressure.

By Sunday night into Monday, a developing warm front to our southwest could bring us a chance for some light snow or light rain. As the warm front lifts northward Monday night, this wintry mix of snow and rain should become plain rain Tuesday ahead of an approaching cold front and its affiliated surface low pressure system. Milder air will be short-lived Tuesday before a cold front brings a rush of colder air into the area late Tuesday and Tuesday night. Upslope light snow and a chance of snow showers to the east could evolve with the rush of cold air Tuesday night.

High pressure will build in across the region on Wednesday. Expect below average temperatures to develop and continue.

AVIATION /09Z WEDNESDAY THROUGH SUNDAY/. Brief IFR intervals are possible the next few hours, but overall, VFR should predominate through Thursday night. Gusty northwest winds at times today should relax later tonight. A period of freezing rain is possible at CHO early Friday, then up towards MRB later in the morning-midday, but otherwise, mainly rain is expected Friday and Friday night. Cigs and vsby likely to drop to IFR at times by Friday night with the rain.

MVFR conditions possible with rain showers Saturday. VFR conditions Saturday night through Sunday night. A few snow showers could venture across CHO and MRB terminals Sunday night, but shouldn't have any big impacts on the terminals. Winds light and variable Saturday becoming west 5 to 10 knots Saturday night. Winds increasing west-northwest 10 to 15 knots gusts 20 knots Sunday and Sunday night.

MARINE. SCA continuing at times through this morning, and a secondary boundary may reinvigorate winds tonight for a time. High pressure then should let winds relax to sub-SCA by Thursday afternoon. Light winds then should prevail through Friday night.

Small craft advisory conditions possible Sunday into Sunday evening as high pressure over the Great Lakes interacts with low pressure over New England.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . Winter Weather Advisory until 8 AM EST this morning for MDZ004>006-503-505-507. VA . Winter Weather Advisory until 7 AM EST this morning for VAZ507- 508. Winter Weather Advisory until 8 AM EST this morning for VAZ501- 505-506. WV . None. MARINE . Small Craft Advisory from 6 PM this evening to midnight EST tonight for ANZ531>533-539>541. Small Craft Advisory until 6 AM EST early this morning for ANZ533-541-542. Small Craft Advisory until noon EST Thursday for ANZ534-537- 543.

SYNOPSIS . RCM NEAR TERM . RCM SHORT TERM . RCM LONG TERM . KLW AVIATION . RCM/KLW MARINE . RCM/KLW


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SLIM2 - 8577330 - Solomons Island, MD 0 mi45 min NW 5.1 G 12 35°F 48°F1026.2 hPa
PPTM2 - 8578240 - Piney Point, MD 14 mi45 min NNW 12 G 15
44062 - Gooses Reef, MD 16 mi27 min NNW 16 G 18 36°F 1026.6 hPa
44042 - Potomac, MD 21 mi27 min 33°F 47°F
LWTV2 - 8635750 - Lewisetta, VA 22 mi51 min N 8 G 11 34°F 47°F1026.4 hPa
BISM2 - 8571421 - Bishops Head, MD 23 mi51 min N 6 G 7 32°F 45°F1026.5 hPa
CA2 - 8571892 - Cambridge, MD 27 mi51 min NW 12 G 15 35°F 45°F1025.2 hPa
NCDV2 31 mi51 min NNW 6 G 13 35°F 49°F1025.3 hPa
BSLM2 - Chesapeake Bay, MD 35 mi153 min NNW 5.1 32°F 1023 hPa31°F
TPLM2 - Thomas Point, MD 40 mi63 min WNW 15 G 17 34°F 46°F1026.5 hPa (+1.9)30°F
44063 - Annapolis 45 mi27 min NW 9.7 G 14 34°F 46°F1026.5 hPa
APAM2 - 8575512 - Annapolis, MD 46 mi45 min 34°F 1025.3 hPa
CPVM2 47 mi45 min 35°F
WASD2 - 8594900 - Washington, DC 49 mi45 min WNW 6 G 9.9 35°F 44°F1026.6 hPa

Wind History for Solomons Island, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Patuxent River, Naval Air Station, MD3 mi71 minNNW 1210.00 miOvercast34°F30°F89%1025.6 hPa
St Marys County Airport, MD5 mi68 minNW 6 mi32°F32°F100%1026.1 hPa
St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity, MD12 mi70 minNW 65.00 miLight Snow Fog/Mist37°F33°F86%1025.1 hPa

Link to 5 minute data for KNHK

Wind History from NHK (wind in knots)
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SW9SW8W13W10W8SW53NE7NW6NW11NW13N12NW11NW11--NW16N16
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2 days agoE9E8SE6E7SE7SE7E6E5E4CalmCalmSE4CalmCalmCalm--N4N6NW4NW4E5E8SW3--

Tide / Current Tables for Solomons Island, Patuxent River, Maryland
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Solomons Island
Click for Map
Wed -- 12:55 AM EST     1.00 feet High Tide
Wed -- 06:25 AM EST     Moonset
Wed -- 07:12 AM EST     Sunrise
Wed -- 07:12 AM EST     -0.22 feet Low Tide
Wed -- 01:29 PM EST     1.25 feet High Tide
Wed -- 04:34 PM EST     Moonrise
Wed -- 04:45 PM EST     Sunset
Wed -- 07:58 PM EST     -0.01 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.910.90.70.40.1-0.1-0.2-0.20.10.40.81.11.21.21.10.80.50.30.1-00.10.30.6

Tide / Current Tables for Point Patience, 0.1 mile southwest of, Maryland Current
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Point Patience
Click for MapFlood direction 315 true
Ebb direction 145 true

Wed -- 12:25 AM EST     -0.00 knots Slack
Wed -- 04:05 AM EST     -0.58 knots Max Ebb
Wed -- 06:26 AM EST     Moonset
Wed -- 07:12 AM EST     Sunrise
Wed -- 07:34 AM EST     0.00 knots Slack
Wed -- 10:20 AM EST     0.71 knots Max Flood
Wed -- 01:18 PM EST     -0.00 knots Slack
Wed -- 04:34 PM EST     Moonrise
Wed -- 04:45 PM EST     Sunset
Wed -- 05:24 PM EST     -1.07 knots Max Ebb
Wed -- 10:09 PM EST     0.00 knots Slack
Wed -- 11:19 PM EST     0.25 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.1-0.1-0.4-0.5-0.6-0.5-0.4-0.20.10.50.70.70.40.1-0.3-0.7-0.9-1.1-1-0.9-0.6-0.3-00.2

Weather Map
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Wind Forecast for Baltimore, MD/Washington (7,2,3,4)
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Ground Weather Radar Station Dover AFB, DE
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weather_mapweather_map weather_map

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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 numerious 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.