Monday, August21, 2017 L-36.com


Marine Weather and Tides
Tall Timbers, MD

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:26AMSunset 7:54PM Monday August 21, 2017 1:50 PM EDT (17:50 UTC) Moonrise 5:09AMMoonset 6:58PM Illumination 0% Phase: New Moon; Moon at 29 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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ANZ537 Tidal Potomac From Cobb Island To Smith Point- 132 Pm Edt Mon Aug 21 2017
.small craft advisory in effect from Tuesday afternoon through Tuesday evening...
This afternoon..S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Tonight..S winds 5 to 10 kt. Waves 1 ft.
Tue..S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
Tue night..SW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Wed..NW winds 5 kt. Waves less than 1 ft. A chance of showers.
Wed night..N winds 5 to 10 kt. Waves 1 ft.
Thu..N winds 5 to 10 kt. Waves 1 to 2 ft.
Fri..NE winds 5 to 10 kt. Waves 1 to 2 ft. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 132 Pm Edt Mon Aug 21 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will move offshore today. A cold front will cross the waters late Tuesday night into early Wednesday. High pressure will return for the second half of the week.

7 Day Forecast for Marine Location Near Tall Timbers, MD
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location: 38.15, -76.63     debug


Area Discussion for - Wakefield, VA
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Fxus61 kakq 211514
afdakq
area forecast discussion
national weather service wakefield va
1114 am edt Mon aug 21 2017

Synopsis
High pressure becomes centered off the mid atlantic coast
through Tuesday. A cold front crosses the area late Wednesday,
with strong high pressure building north of the area from Thursday
into the upcoming weekend.

Near term through tonight
Latest surface analysis centers ~1024mb high pressure just
offshore, resulting in light south to southeast flow over the
local area. Morning fog stratus has dissipated, with only some
lingering low clouds over southeast virginia.

Otherwise for today, expect partly cloudy variably cloudy skies
n and partly-mostly sunny south with decent eclipse viewing
expected for the most part this aftn. With some weak upper
level shortwave energy currently over oh moving east through
the day, should see enough of a trigger for sct convection to
develop across the mts then drift e-se across the northern most
zones of the fa by around 18z. Will carry chc pops to 30-40%
mainly north of ric, with 20% into metro ric and dry across the
south. Highs upr 80s- lwr 90s except mid 80s at the beaches.

Hourly temperature forecast has temperatures falling a few
degrees during the eclipse (18 19z), then rising again through
21z. Becoming mostly clear this evening except partly cloudy ne
where a 20-30% pop will be maintained. Warm humid with lows
mainly 70-75 f tonight. Fog stratus possible again tonight over
the piedmont into central virginia.

Short term Tuesday through Wednesday
Hot mainly dry tues ahead of the approaching cold front. 85-90 f
along the coast, 90-95 f west of the bay. Dry most of tues
night except increasing moisture could lead to a few showers by
daybreak across NRN most zones. Warm with most areas having
lows only in the mid 70s.

Frontal boundary a bit slower to traverse the fa wed. This combined
with a weak wave progged to move east along it will spread widespread
moisture and support likely pops in the afternoon, but probably
not much in the morning (especially over the se). Another round
of mdt to hvy downpours possible ahead and along the fropa.

Highs mid 80s NW to around 90 f south.

Long term Wednesday night through Sunday
A cold front gradually drops through the area Wednesday
night into Thursday morning. Modest ascent accompanies the front
within the rrq of a ~110kt jet over new england along with pw
values to around 2.0" (around +1 st dev). The highest pops by
wed evening look to focus across SRN va NE nc where 70% will be
maintained, tapered to ~30% across the NW where drier air arrive
first. Pops across SE portions gradually diminish to 20-40% by
Thursday aftn. Thunder will be maintained into Wednesday
evening, with showers thereafter as stable NE flow prevails in
the wake of the front. Drier air gradually filters in from the
nw late Wednesday night into Thursday with partial clearing
across the NRN tier counties. Lows Wednesday night range from
the mid 60s NW to the low 70s se, followed by highs Thursday in
the upper 70s to low 80s. ~1025mb (+1 st dev) high pressure
builds from the great lakes across the saint lawrence valley and
into new england Thursday nigh through Sunday. This will result
in persistent onshore flow, which combined with a drier airmass
will result in a series of pleasant days with highs in the
upper 70s at the coast to low 80s inland, with lows in the upper
50s to low 60s inland, and mid upper 60s along the coastlines.

Aviation 15z Monday through Friday
Patchy fog low stratus across the region early this morning,
mainly affecting ric through 13-14z. After the fog low cloud
burns off,VFR conditions will prevail. Isolated tstms in the
aftn evening possible at ric sby but still mainly dry. Continued
mainly dry and probably will see a little less in the way of
fog low cloud Tue morning as southerly flow becomes a little
stronger. The next cold front approaches the region wed, and
flight restrictions will be possible wed, mainly in the aftn and
through Wed night in showers tstms. Some showers may linger
across SE terminals into Thu morning, but otherwise improving
conditions except with a breezy NE flow near the coast Thu fri.

Marine
Early this morning, sfc high pressure was cntrd over the area.

The high will move off the coast and out to sea today through
tue, and a cold front will approach the waters Tue night into
wed morning. The front will then cross the area Wed wed night
and will push well SE of the area during thu, with high
pressure building back into the region for the remainder of the
forecast period. Expect SE or S winds around 10 kt or less
during today, as high pressure moves offshore. Winds increase
and become ssw ahead of the approaching cold front Tue through
tue night. Winds speeds may approach 15 to 20 kt over the ches
bay and ocean with seas building to 3 to 4 ft, potentially up to
5 ft north 20nm out, and waves building to 2 to 3 ft. A small
craft advisory may be needed for the chesapeake bay and NRN two
coastal zns Tue night. Winds shift to the N NE behind the front
late Wed through Thu around 10 to 15 kt.

Akq watches warnings advisories
Md... None.

Nc... None.

Va... None.

Marine... None.

Synopsis... Lkb
near term... Lkb sam
short term... Lkb
long term... Ajz
aviation... Lkb
marine... Tmg


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PPTM2 - 8578240 - Piney Point, MD 5 mi50 min SSE 14 G 15
LWTV2 - 8635750 - Lewisetta, VA 14 mi50 min S 8.9 G 9.9 85°F 84°F1022.1 hPa (-0.7)
SLIM2 - 8577330 - Solomons Island, MD 15 mi50 min S 7 G 8.9 85°F 82°F
44042 - Potomac, MD 18 mi40 min SSE 14 G 16 82°F 1 ft1021.7 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 22 mi50 min S 15 G 18 80°F 1022.9 hPa (-0.5)
NCDV2 25 mi50 min ESE 8.9 G 11 84°F 85°F1020.9 hPa (-0.8)
44062 - Gooses Reef, MD 30 mi40 min SSE 16 G 18 82°F 2 ft1022.7 hPa
BISM2 - 8571421 - Bishops Head, MD 32 mi50 min SSE 14 G 16 81°F 83°F1022.8 hPa (-0.4)
CA2 - 8571892 - Cambridge, MD 42 mi50 min 87°F 84°F1023.1 hPa (-0.4)
BSLM2 - Chesapeake Bay, MD 44 mi140 min SSE 6 80°F 1022 hPa73°F
44058 - Stingray Point, VA 45 mi40 min S 14 G 16 82°F 1 ft1023.3 hPa

Wind History for Piney Point, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity, MD11 mi57 minSSE 9 miFair86°F78°F77%1021.9 hPa
St Marys County Airport, MD12 mi73 minSE 610.00 miPartly Cloudy86°F73°F66%1022.7 hPa
Patuxent River, Naval Air Station, MD16 mi58 minSE 1010.00 miPartly Cloudy85°F77°F77%1022 hPa
Tappahannock-Essex County Airport, VA24 mi55 minSSE 510.00 miPartly Cloudy90°F67°F48%1022.7 hPa

Wind History from NUI (wind in knots)
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Last 24hr5NE4E3NE3NE4E3CalmCalmCalmCalmNE3CalmNE3CalmCalmCalmCalmE4CalmSE5SE7SE5SE8S9
1 day agoNE3W4SW7SW6W4S3SE3SE4S3S4S3NE3NE3CalmCalmCalmCalm3NE4CalmN7N44W6
2 days agoSE7SE7S7S7S9SE85W6
G22
S4SE5CalmSW8S6SW6SW5W5CalmCalmW53N433Calm

Tide / Current Tables for Coles Point, Virginia
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Coles Point
Click for Map
Mon -- 02:15 AM EDT     2.35 feet High Tide
Mon -- 06:09 AM EDT     Moonrise
Mon -- 06:26 AM EDT     Sunrise
Mon -- 08:41 AM EDT     -0.04 feet Low Tide
Mon -- 02:31 PM EDT     New Moon
Mon -- 02:47 PM EDT     2.19 feet High Tide
Mon -- 07:51 PM EDT     Sunset
Mon -- 07:57 PM EDT     Moonset
Mon -- 08:53 PM EDT     0.01 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.82.22.32.21.81.40.90.50.1-00.30.81.41.82.12.21.91.40.90.50.200.20.7

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

Mon -- 01:45 AM EDT     -0.00 knots Slack
Mon -- 05:42 AM EDT     -1.08 knots Max Ebb
Mon -- 06:08 AM EDT     Moonrise
Mon -- 06:26 AM EDT     Sunrise
Mon -- 09:59 AM EDT     0.00 knots Slack
Mon -- 11:41 AM EDT     0.47 knots Max Flood
Mon -- 02:00 PM EDT     -0.00 knots Slack
Mon -- 02:31 PM EDT     New Moon
Mon -- 05:46 PM EDT     -0.85 knots Max Ebb
Mon -- 07:51 PM EDT     Sunset
Mon -- 07:57 PM EDT     Moonset
Mon -- 09:32 PM EDT     0.00 knots Slack
Mon -- 11:49 PM EDT     0.67 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.3-0.1-0.5-0.8-1-1.1-1-0.7-0.400.40.50.30-0.3-0.6-0.8-0.8-0.7-0.5-0.20.20.6

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Mid-Atlantic    EDIT
Geos

Wind Forecast for Wakefield, VA (13,3,4,5)
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Ground Weather Radar Station Dover AFB, DE
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weather_mapweather_map weather_map

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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.