Sunday, May31, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Dahlgren Center, VA

Version 3.4
NOTICE
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 5:43AMSunset 8:27PM Sunday May 31, 2020 7:08 PM EDT (23:08 UTC) Moonrise 1:35PMMoonset 1:43AM Illumination 74% 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
ANZ536 Tidal Potomac From Indian Head To Cobb Island- 435 Pm Edt Sun May 31 2020
Rest of this afternoon..NW winds 10 kt. Waves 1 ft.
Tonight..N winds 5 to 10 kt. Waves 1 ft.
Mon..NW winds 5 kt. Waves less than 1 ft.
Mon night..SW winds 5 kt. Waves less than 1 ft.
Tue..SW winds 5 to 10 kt. Waves 1 ft.
Tue night..SW winds 5 to 10 kt. Waves 1 ft.
Wed..W winds 5 to 10 kt. Waves 1 ft. A chance of tstms through the night.
Thu..W winds 5 kt. Waves less than 1 ft. A chance of tstms. A chance of showers. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 435 Pm Edt Sun May 31 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build over the region through Tuesday before a warm front lifts north of the waters Tuesday night. A series of cold fronts will approach from the north late in the week, potentially stalling nearby. Small craft advisories may be need for a portion of the waters Wednesday.


7 Day Forecast for Marine Location Near Dahlgren Center, VA
   Hourly   EDIT   Help
location: 38.32, -77.03     debug


Area Discussion for - Baltimore, MD/Washington
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KLWX 311859 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 259 PM EDT Sun May 31 2020

SYNOPSIS. High pressure over the Great Lakes builds eastward through Tuesday. Low pressure passing north of the Great Lakes will aim to lift a warm front through the area during the middle portion of the week. A cold front will approach the region thereafter before stalling in the region as we head into next weekend.

NEAR TERM /THROUGH TONIGHT/. High pressure has migrated over the lower Great Lakes region this afternoon as a cold front sits off the Southeast coast. Locally, a mix of clouds and sun overspreads the CWA as a cold air advection regime as allowed for fair weather cumulus clouds to developed area wide. With a northerly breeze gusting 15 to 20 mph at times, temperatures are hovering in the low to middle 70s with dewpoints quite comfortable in the 40s.

Dry and mostly clear conditions expected to persist overnight as the aforementioned high continues to build eastward into the region. Northerly winds will slacken by this evening, remaining light overnight, as clear and seasonably chilly conditions prevail. Lows by daybreak will drop into the 40s for much of the area, with lower 50s holding on in the cities, while upper 30s will be possible in the higher elevations of the Allegheny Mountains.

SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/. The high moves atop the Mid-Atlantic on Monday with continued dry conditions and temperatures still running several degrees below normal in the low to middle 70s. Plenty of sunshine can be expected as light winds trend out of the west northwest. Clouds increase Monday night as we start to warm advect aloft and a weakening shortwave drops southeastward from the Great Lakes. Have low end chance POPs across the Potomac Highlands late Monday night, with a dry forecast elsewhere. Lows Monday night generally in the 50s.

By Tuesday, the surface high shifts off the coast, turning winds more southerly and allowing for an increase in temperatures and moisture. As temperatures rise to near normal levels for early June, dewpoints will tick upwards through the 50s, nearing 60 degrees across central Virginia. While we will be lacking any strong lifting mechanism, a warm front will be approaching to our west southwest. We will continue to advertise a chance of an afternoon shower or storm, mainly along and north of the Potomac River. Surface low pressure and associated shortwave drops southeastward once again from the eastern Great Lakes Tuesday night as we reside on the eastern periphery of an upper level ridge. This could deliver weakening showers/storms sinking southward from Pennsylvania overnight Tuesday, but again, no more than low end chance POPs exists at this time along and north of the Potomac. Lows Tuesday night will be mild in the 60s.

LONG TERM /WEDNESDAY THROUGH SUNDAY/. A warm front will push east of the area Wednesday with temperatures climbing into the 90s. Models show a maximum in sfc to 850 mb dewpoints over the area at 18Z. With all the the heat and humidity, there will be a concern for t-storms. Forcing over our area does not look particularly strong with only weak height falls indicated and no sfc boundaries present, however, models have a strong signal for one or more clusters of t-storms over ern OH and PA Wed afternoon, which would likely be severe given presence of strong westerlies (50+kt at 500 mb over PA). Outflows or cold pools generated by upstream convection may serve as trigger for additional/new convection over the area. In summary, significant uncertainty remains with respect to strength and timing of any convection Wed afternoon/night.

The front will be slow to clear the area Thu before it washes out Fri. Risk of showers/t-storms will persist Thu, especially over central Virginia. Another front is expected to cross the area Sat. The quality of moisture return ahead of this front remains uncertain this far out, but there seems to be some consensus for improving wx/drying conditions toward the end of this week or the beginning of next week.

AVIATION /18Z SUNDAY THROUGH FRIDAY/. Northwesterly breezes will relax this afternoon and evening as high pressure to our west nudges closer. Light winds and VFR conditions will prevail through the overnight hours. The high settles overhead on Monday and Monday night, with light west northwesterly winds and dry conditions. The high migrates off the coast Tuesday and Tuesday night, turning winds southerly and bringing an increase in temperatures/moisture. This will bring a chance for afternoon/evening showers and isolated thunderstorms. A brief episode of sub-VFR conditions are possible with any encounter, but overall VFR conditions are expected.

Most likely VFR most of the time Wednesday and Thursday. A back door cold front could try to bring lower cigs on Thursday, but uncertainty here is high. Otherwise, main concern will be potential for scattered thunderstorms.

MARINE. Small Craft Advisory has dropped for all waters except the northern portion of the Chesapeake Bay as winds will remain near threshold Advisory levels into this evening. A surge of northerly gusts up to 20 knots is expected this evening and overnight as cold air advection brings in cooler air than water temperatures, so mixing seems likely over the main stem of the Bay with northerly channeling. As such, have issued a Small Craft Advisory for these areas overnight.

High pressure builds over the waters Monday and Monday night with lighter west northwesterly breezes. The high shifts offshore Tuesday, as winds turn out of the south, but remain below SCA thresholds through Tuesday night. A chance of thunderstorms will exist late Tuesday afternoon and Tuesday night, mainly across the northern Bay, and could pose an isolated threat for locally gusty winds over the waters.

Warm air over cool waters should help keep winds below SCA thresholds Wednesday and Thursday. Main concern will be risk of scattered thunderstorms both days.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . Small Craft Advisory until 4 AM EDT Monday for ANZ530-531-538- 539. Small Craft Advisory from 10 PM this evening to 7 AM EDT Monday for ANZ534-537-543. Small Craft Advisory from 10 PM this evening to 4 AM EDT Monday for ANZ532-533-540-541.

SYNOPSIS . BKF NEAR TERM . BKF SHORT TERM . BKF LONG TERM . LFR AVIATION . BKF/RCM MARINE . BKF/RCM


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
NCDV2 0 mi57 min NNW 5.1 G 8.9 74°F 74°F1017.9 hPa
PPTM2 - 8578240 - Piney Point, MD 29 mi51 min N 14 G 17
SLIM2 - 8577330 - Solomons Island, MD 31 mi51 min NNW 5.1 G 8.9 72°F 71°F1018.3 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 35 mi51 min E 1 G 1.9 1019 hPa
44062 - Gooses Reef, MD 36 mi33 min NW 1.9 G 3.9 72°F
BSLM2 - Chesapeake Bay, MD 36 mi99 min NNW 2.9 1018 hPa
LWTV2 - 8635750 - Lewisetta, VA 37 mi51 min ESE 8 G 9.9 69°F 73°F1018.7 hPa
WASD2 - 8594900 - Washington, DC 38 mi51 min WNW 9.9 G 14 74°F 74°F1018.6 hPa
44042 - Potomac, MD 42 mi33 min NE 5.8 G 9.7 68°F 1019.1 hPa

Wind History for Piney Point, MD
(wind in knots)    EDIT      (on/off)   Help
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
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
Last
24hr
E2
S4
S2
--
NW2
NW14
G17
N10
G13
N12
G16
N12
N13
N15
G21
N14
G19
N13
N12
G15
N11
N12
G15
NE6
G15
NE9
G12
NW8
G13
NW6
NW12
G17
NW17
NW15
N10
1 day
ago
S7
SW7
S4
SW8
SW4
G8
SW7
SW5
SW7
SW9
SW10
W3
W5
NW4
NW7
NW9
N8
NW7
NW7
NW7
NW11
NW12
NW8
NW6
NW1
2 days
ago
S7
S7
S7
S6
S5
SW10
S6
SW10
G15
SW7
SE4
SE6
SE5
S5
S9
S5
S6
S5
SE2
G5
S3
SE8
SE12
S14
G17
SW13
SW11

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Quantico Marine Corps Airfield - Turner Field, VA19 mi73 minNNW 69.00 miFair74°F42°F32%1018.9 hPa
Stafford, Stafford Regional Airport, VA23 mi74 minNNW 610.00 miFair75°F45°F35%1020 hPa
Fredericksburg, Shannon Airport, VA23 mi74 minNNW 510.00 miFair75°F47°F38%1018.6 hPa

Link to 5 minute data for KNYG

Wind History from NYG (wind in knots)
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
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
Last 24hr--W7NW12NW8N10N8N13N12N11N9NW5NW8N10N9NE10N9
G16
N10NW11
G20
W8
G18
N7NW11N6N6N9
1 day agoS9S5S7S5NW15
G29
SW4CalmNW4W3CalmN3W3N6N9N10NW8
G18
N11N7E4E6NE8NE4NW6NW5
2 days agoS11S5S5S5S11S6S7S9S9S4S9S9S8S8--S8S11S11S11S10----S8S10

Tide / Current Tables for Dahlgren, Upper Machodoc Creek, Virginia
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Dahlgren
Click for Map
Sun -- 02:42 AM EDT     Moonset
Sun -- 04:53 AM EDT     0.30 feet Low Tide
Sun -- 05:46 AM EDT     Sunrise
Sun -- 10:51 AM EDT     1.85 feet High Tide
Sun -- 02:34 PM EDT     Moonrise
Sun -- 05:21 PM EDT     0.11 feet Low Tide
Sun -- 08:25 PM EDT     Sunset
Sun -- 11:36 PM EDT     1.95 feet High 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
1.61.310.60.40.30.40.71.11.51.81.81.71.410.60.30.10.20.40.81.31.71.9

Tide / Current Tables for Colonial Beach, Potomac River, Virginia
   EDIT      (on/off)   Help   One Week of Data
Colonial Beach
Click for Map
Sun -- 02:42 AM EDT     Moonset
Sun -- 04:26 AM EDT     0.32 feet Low Tide
Sun -- 05:46 AM EDT     Sunrise
Sun -- 10:24 AM EDT     1.84 feet High Tide
Sun -- 02:34 PM EDT     Moonrise
Sun -- 04:54 PM EDT     0.13 feet Low Tide
Sun -- 08:25 PM EDT     Sunset
Sun -- 11:09 PM EDT     1.94 feet High 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
1.51.20.80.50.30.40.60.91.31.61.81.81.61.30.90.50.20.10.30.611.51.81.9

Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS Local Image of Mid-Atlantic    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
Wind Forecast for Baltimore, MD/Washington (19,4,5,8)
      (on/off)   Help

Ground Weather Radar Station Sterling, VA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines 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.