Page Links Change Location One Page Printer Page HELP AIS Default setup SAVE setting RECALL saved setting

Marine Weather and Tides Dahlgren Center, VA Version 3.4

NOTICE 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 6:30AM

Sunset 7:48PM

Monday August 26, 2019 4:08 AM EDT (08:08 UTC)

Moonrise 12:58AM

Moonset 4:05PM

Illumination 18%

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.

---

---

7 Day Forecast for Marine Location Near Dahlgren Center, VA

   Hourly   EDIT   Help

---

Area Discussion for - Baltimore, MD/Washington

      (on/off)   Help   NOTE: mouseover dotted underlined text for definition

Fxus61 klwx 260757 afdlwx area forecast discussion national weather service baltimore md washington dc 357 am edt Mon aug 26 2019 Synopsis Strong high pressure will build north of the region today. Low pressure will likely develop off the carolina coast today into tonight. This low is expected to move out to sea Tuesday. A cold front will cross the region on Wednesday. Near term through tonight High pressure will build to our north today before moving to the northeast tonight. A persistent wind from the northeast then from the east later today and tonight will usher in additional low-level moisture. There is a chance for a few rain showers to develop mainly across southern maryland and the virginia piedmont today into tonight. An upslope component to the wind along the eastern slopes of the blue ridge and potomac highlands could yield a few showers as well. Temperatures will reach the middle 70s then fall only into the middle 60s tonight. Short term Tuesday through Wednesday night Low pressure developing off the carolina coast will move northeast and should stay offshore of the eastern seaboard Tuesday through Wednesday night. An upper level trough of low pressure sweeping in from the great lakes and ohio valley will prevent the coastal low from impacting the east coast with any gusty winds and heavy rain. The upper trough moving in from the west will increase our chances of encountering rain showers and perhaps a thunderstorm or two on Wednesday. The best chance for seeing scattered to widespread rain showers will be Wednesday with the upper level trough and associated surface cold front. Temperatures and dewpoint temperatures are expected to be warmer Tuesday than today. The same GOES for Wednesday ahead of the upper trough and associated cold front. Long term Thursday through Sunday In the wake of the cold front, continental high pressure beneath rather flat mid upper level flow will close out the week. Believe that both Thursday and Friday will be dry, with temperatures near climo. Humidity levels will be kept in check too. For the weekend, a disturbance in the northern stream (along the us canadian border) will drop a cold front toward the mid atlantic. Thus, chance pops return to the forecast, especially on Sunday. That said, it remains to be seen how prolonged the showers will be. Temperatures in the mid-upper 80s would be a couple of degrees above average. Due to the anticipated clouds showers, Sunday likely to be slightly cooler. Aviation 08z Monday through Friday Vfr conditions expected with high pressure to the north then to the northeast today. Any showers should be isolated. As for Tuesday into Wednesday, the chances of additional showers or perhaps a rumble of thunder impacting our terminals increases but is not yet definite. Winds northeast to east around 10 knots through Monday night. Winds southeasterly around 10 knots Tuesday into Tuesday night. Winds becoming more southerly to south-

southwesterly around 10 to 15 knots Wednesday into Wednesday night. Vfr flight conditions anticipated thu-fri. Marine A small craft advisory remains in effect through this afternoon for much of the chesapeake bay and tidal potomac. An additional small craft advisory or extension has been issued for this evening into the middle part of the overnight. Winds will be light east Tuesday, becoming south on Wednesday. Winds will be locally higher on Wednesday in vicinity of thunderstorms in association with a passing cold front. Northwest flow Thursday will become light southwest south Friday. The pressure gradient likely will be weak enough to preclude any advisories throughout this period. Tides coastal flooding Current water level departures in the neighborhood of a foot above astronomical predictions. Even with minor fluctuations, believe that the current tide cycle will reach action but sneak in just under the minor flood threshold. This solution higher than etss guidance. As low pressure tracks up the coast over the next day or two, east northeast flow will push additional water toward the atlantic shoreline. While there is a spread in operational forecast guidance solutions, the respective ensembles holding true to their own camp. In light of current trends, would rather go on the higher side of the envelope... But it is unclear how effectively water will work against northeast flow. Lighter surface winds (which is anticipated) should translate to a greater tidal response. The daytime cycles are the lower astronomically. Therefore, cycles to watch for minor flooding will be late tonight early Tuesday morning as well as late Tuesday night early Wednesday morning. Lwx watches warnings advisories Dc... None. Md... None. Va... None. Wv... None. Marine... Small craft advisory until 6 pm edt this evening for anz531- 538-539. Small craft advisory until 2 am edt Tuesday for anz532>534-537- 540>543. Small craft advisory until 6 am edt early this morning for anz530-536. Synopsis... Klw near term... Klw short term... Klw long term... Hts aviation... Klw hts marine... Klw hts tides coastal flooding... Hts

---

Weather Reporting Stations

   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
NCDV2	0 mi	56 min	NNE 1.9 G 5.1	65°F	80°F		1020.1 hPa
PPTM2 - 8578240 - Piney Point, MD	29 mi	50 min	NE 6 G 9.9
SLIM2 - 8577330 - Solomons Island, MD	31 mi	50 min	NNE 8.9 G 14	69°F	80°F		1020.2 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD	35 mi	50 min	NNE 11 G 15	68°F			1021.2 hPa
44062 - Gooses Reef, MD	36 mi	38 min	NNE 14 G 16	69°F			1021.6 hPa
BSLM2 - Chesapeake Bay, MD	36 mi	158 min	NW 1	62°F			1022 hPa	61°F
LWTV2 - 8635750 - Lewisetta, VA	37 mi	56 min	NE 9.9 G 16	70°F	76°F		1019.9 hPa
WASD2 - 8594900 - Washington, DC	38 mi	50 min	NNE 1.9 G 5.1		81°F		1021.6 hPa

Wind History for Piney Point, MD

(wind in knots)    EDIT      (on/off)   Help

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

12 AM

1 AM

2 AM

3 AM

4 AM

Last 24hr

NE3

NE4

NE8

NE9 G13

NE9 G13

NE12 G17

NE12 G18

E12 G21

E10 G19

NE9 G15

E11 G14

NE9 G13

E11 G15

E12 G18

NE11 G16

E10 G13

E9 G12

E8 G12

E8 G12

E8 G11

NE7 G10

NE7 G10

NE6

NE8

1 day ago

N7

NE5

NE6

NE7

NE7 G10

NE5 G10

NE6 G10

NE8

NE6 G10

N10 G14

N3

E6

N9 G12

N8

NE8

E8 G11

E8 G13

E10 G13

E7 G10

E7

NE7

NE5

NE5 G8

NE4

2 days ago

W7 G10

W8 G11

W9

NW6

N7

NE4

E2

S1 G4

NE6

NE15 G19

NE12 G17

NE13 G21

N14 G18

NE5 G8

NE10 G15

NE7 G11

N12

NE9 G13

NE5 G8

N6

N6

N7

N10

N8

---

Airport Reports

    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.

Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Stafford, Stafford Regional Airport, VA	23 mi	1.9 hrs	NE 4	10.00 mi	Fair	64°F	61°F	89%	1022.7 hPa
Fredericksburg, Shannon Airport, VA	23 mi	4.2 hrs	NE 3	10.00 mi	Fair	67°F	61°F	81%	1021.7 hPa

Link to 5 minute data for KNYG

Wind History from NYG (wind in knots)

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

Last 24hr

--

NW4

--

--

--

NW5

--

NW6

N6

NE13 G18

NE15 G19

NE14

E11

E14

E13

NE11

NE12

NE6

E14

E12

E10

E7

E6

E8

1 day ago

--

--

Calm

--

--

N8

N8

N9

N8

N10

NE9

NE5

NE8

E10

NE10

NE8

E5

NE8

NE5

N7

N6

E10

E9

NE11

2 days ago

--

W3

SW4

W8

--

--

NW3

Calm

NW4

--

NE11

NE11

N14

N10

N13 G18

N9

N5

N9

N11

N10

N7

N7

N7

--

---

Tide / Current Tables for Dahlgren, Upper Machodoc Creek, Virginia (2)

   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data

---

Tide / Current Tables for Mathias Point, Virginia

   EDIT      (on/off)   Help   One Week of Data

---

Weather Map and Satellite Images

       (on/off)   HelpWeather Map

GOES 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

---

Wind Forecast for Baltimore, MD/Washington (4,6,7,8)

      (on/off)   Help

---

Ground Weather Radar Station Sterling, VA

   (on/off)   Help

---

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 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.