Thursday, July18, 2019 L-36.com


Marine Weather and Tides
Port Tobacco Village, MD

Version 3.4
NOTICE
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 5:57AMSunset 8:32PM Thursday July 18, 2019 5:38 AM EDT (09:38 UTC) Moonrise 8:55PMMoonset 6:25AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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- 436 Am Edt Thu Jul 18 2019
Rest of the overnight..SW winds 10 kt. Waves 1 ft. A slight chance of showers.
Today..SW winds 5 kt. Waves less than 1 ft. Numerous showers and scattered tstms.
Tonight..W winds around 5 kt. Waves 1 ft or less. Scattered showers and tstms.
Fri..SW winds around 5 kt. Waves 1 ft or less.
Fri night..SW winds 5 kt. Waves less than 1 ft.
Sat..W winds 5 kt. Waves less than 1 ft.
Sat night..SW winds 5 kt. Waves less than 1 ft.
Sun..SW winds 5 kt. Waves less than 1 ft. A chance of showers and tstms.
Mon..NW winds around 5 kt. Waves 1 ft. Showers and tstms likely . Winds and waves higher and visibilities lower in and near tstms.
ANZ500 436 Am Edt Thu Jul 18 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. The remnants of barry will move into the western atlantic through tonight. High pressure will build over the southeastern states for Friday into the weekend. A cold front will approach the waters from the great lakes and pennsylvania Sunday night, and cross the waters early next week.


7 Day Forecast for Marine Location Near Port Tobacco Village, MD
   Hourly   EDIT   Help
location: 38.44, -77.11     debug


Area Discussion for - Baltimore, MD/Washington
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 klwx 180800
afdlwx
area forecast discussion
national weather service baltimore md washington dc
400 am edt Thu jul 18 2019

Synopsis
The remnant circulation of barry and its trailing surface trough
will depart into the western atlantic through tonight. High
pressure will build over the southeastern united states Friday
through the weekend. A cold front approaching from the great
lakes and pennsylvania will cross the region early next week.

Near term through tonight
Another hot and humid day is in store, but not quite as hot as
Wednesday given expected cloud cover and potential for scattered
to numerous showers and thunderstorms developing a few hours
earlier than yesterday. These factors should keep heat indices
in the 95-100 range, just a few degrees shy of headline
criteria, but still hot nonetheless.

There's less shear today, but still expecting around 2000 cape.

Overall, storm organization should be less, and coverage less
widespread. Heavy rain and perhaps some strong gusty winds are
still possible given instability and high pwats in place. One
concern is slower storm motions and a weak mesolow progged by
some guidance developing near i-95 later this afternoon, so if
any heavier thunderstorms re-develop over the same areas,
isolated instances of flooding could be an issue.

Warm and humid tonight with lows in the 70s and patchy fog
possible, especially in any areas that receive rain today given
decreasing cloud cover.

Short term Friday through Saturday night
Have opted to extend the excessive heat watch through Sunday
evening, and include the nighttime hours for multiple reasons:
1) multiple days with heat indices forecast to be near or above
warning thresholds (105 west of the blue ridge 110 east of the
blue ridge) during the afternoon hours, and 2) heat indices not
dropping below 80 for long (if at all) overnight, possibly
staying above 90 in the major urban centers, offering very
little relief from the heat. The prolonged and persistent nature
of the heat could prove to be even more dangerous than usual for
these reasons, even though the forecasted temperatures, dew
points and subsequently heat index values at any given hour on
any given day aren't necessarily unheard of for the mid-atlantic.

It is vitally important to plan ahead so you can beat the heat
late this week. Do not engage in strenuous activity during peak
heating (afternoon hours). Avoid prolonged exposure to the
heat, staying in air conditioned areas when possible. Drink
plenty of water and wear loose, light fitting clothing. Keep
pets in cool, air conditioned areas with plenty of water, and
avoid taking them outside during the day when pavement
temperatures are very hot. And do not leave pets or children
unattended in a vehicle.

Visit

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 9 mi63 min SSW 8 G 9.9 78°F 87°F1010.3 hPa
WASD2 - 8594900 - Washington, DC 30 mi57 min SSE 4.1 G 5.1 80°F 86°F1011.1 hPa
SLIM2 - 8577330 - Solomons Island, MD 36 mi51 min SSW 11 G 12 80°F 83°F1010.8 hPa
PPTM2 - 8578240 - Piney Point, MD 37 mi51 min SW 13 G 14
44062 - Gooses Reef, MD 38 mi39 min SW 16 G 18 81°F 1 ft1011.6 hPa (-1.5)
COVM2 - 8577018 - Cove Point LNG Pier, MD 39 mi51 min SW 14 G 16 80°F 1011.7 hPa
LWTV2 - 8635750 - Lewisetta, VA 46 mi57 min SW 9.9 G 12 80°F 84°F1011.6 hPa
TPLM2 - Thomas Point, MD 48 mi39 min SSW 8.9 G 11 80°F 82°F1011.8 hPa (-1.4)75°F

Wind History for Washington, DC
(wind in knots)    EDIT      (on/off)   Help
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
5
AM
Last
24hr
S5
S6
G9
S5
G8
S6
S7
S8
S6
S8
S10
G13
S9
S8
G14
S9
G13
SW8
G14
SE4
S2
SE3
SE3
S5
--
SW2
W2
SE4
SE3
G6
SW4
1 day
ago
SE2
SE2
SW2
S3
S4
S5
S3
S5
S8
G11
S9
G13
S8
G11
SW3
G8
S7
S5
S3
S4
S12
G16
S9
S5
G9
SW3
S5
S4
S8
S6
2 days
ago
N1
G4
N2
G5
NE2
NE3
SE2
S1
G5
N2
G8
NW7
G10
NW8
NW6
G9
NW6
NW4
NW4
G7
NW4
G7
SE4
G7
SE4
G7
SE1
SE1
G4
S3
--
SE2
SE1
E1
SE2

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Quantico Marine Corps Airfield - Turner Field, VA11 mi43 minN 010.00 miFair79°F75°F88%1011.6 hPa
Stafford, Stafford Regional Airport, VA19 mi64 minSSE 310.00 miFair75°F75°F100%1012.5 hPa
Fort Belvoir, VA20 mi1.7 hrsN 01.88 miFog/Mist75°F73°F96%1011.4 hPa
Fredericksburg, Shannon Airport, VA22 mi44 minN 010.00 miFair76°F74°F94%1011.2 hPa

Wind History from NYG (wind in knots)
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
5
AM
Last 24hrSW64SW4S6S7S9S8S9S11S13S17S12NW7W7SW5CalmSW6SW5W6SW5W3SW7SW8Calm
1 day agoNW6NW5NW3E3S3S3S5S4S5S5CalmCalmS7S6SE7S14S15SW7W4CalmCalmSW5SW3Calm
2 days agoNW9NW8CalmN4E7E5Calm3SE34S5S7S6S5SW4W3NW4NW3NW4NW5NW4NW5NW6NW6

Tide / Current Tables for Goose Bay, Port Tobacco River, Potomac River, Maryland
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Maryland Point Light, Potomac River, Maryland
   EDIT      (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
GOES 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 (5,6,7,8)
      (on/off)   Help

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

Ad by Google

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.