Saturday, April21, 2018 L-36.com


Marine Weather and Tides
Tall Timbers, MD

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:20AMSunset 7:52PM Saturday April 21, 2018 11:42 AM EDT (15:42 UTC) Moonrise 10:03AMMoonset 12:00AM Illumination 37% Phase: Waxing Crescent; Moon at 6 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
ANZ537 Tidal Potomac From Cobb Island To Smith Point- 1032 Am Edt Sat Apr 21 2018
Rest of today..N winds 10 kt...becoming se late. Waves 1 ft.
Tonight..SW winds 5 to 10 kt. Waves 1 ft.
Sun..E winds 5 to 10 kt. Waves 1 ft.
Sun night..SE winds 5 to 10 kt. Waves 1 ft.
Mon..SE winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
Mon night..E winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance of rain.
Tue..E winds 10 to 15 kt. Waves 2 to 3 ft. Rain.
Wed..E winds 5 to 10 kt...becoming nw. Waves 1 to 2 ft. Rain in the morning, then showers likely through the night. A chance of showers after midnight.
ANZ500 1032 Am Edt Sat Apr 21 2018
Synopsis for the tidal potomac and md portion of the chesapeake bay.. An expansive area of high pressure will build eastward from the great lakes region this weekend, moving off the new england coast early next week. An area of low pressure over the deep south will approach the region mid week. Small craft advisories may be needed late Monday into Tuesday.

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


Area Discussion for - Wakefield, VA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kakq 211400
afdakq
area forecast discussion
national weather service wakefield va
1000 am edt Sat apr 21 2018

Synopsis
Cool and dry conditions continue through the weekend as high
pressure is centered from the great lakes to the mid atlantic
region. Low pressure will track from the gulf coast states
northeast up along the east coast late Monday through Wednesday.

Near term through tonight
As of 14z Saturday...

latest msas shows ~1032 mb broad high pressure centered over
the great lakes region. The high continues to extend down into
the mid atlc region, leading to another dry day with a sunny
sky. Highs in the low-mid 60s most areas except near the coast
(mid-upr 50s) where sea breezes may develop this aftn.

For tonight... The fa remains under the influence of sfc high
pressure centered off to the north. Some increasing moisture in
the wnw flow aloft will allow for increasing clouds and temps to
only fall into the low mid 40s.

Short term Sunday through Monday night
As of 350 am edt Saturday...

high pressure slides offshore Sunday into Sunday night. This
will bring gradually increasing clouds Sunday afternoon and
night. Highs Sunday range through the 60s. N or NE winds 10 kt
or less Sunday morning veer around to the SE Sunday night,
bringing gradually moderating temps.

By Monday morning, next weather system currently over the desert
southwest will have pushed east toward the gulf coast region.

Models are in general agreement that the trough will gradually
dampen, with the closed low opening up as the upper trough
traverses the southern tier of states over the weekend, with a
weak inverted trough developing over the southeast into Monday
morning. Given the antecedent dry conditions and the slow
evolution of this system, have kept Monday dry across the local
area, despite increase in cloudiness. May be a few light rain
showers possible across the i-85 corridor, but will hold pops at
slight chc or less. More clouds than Sun over much of the area
will keep temps in the mid 60s. Rain chances steadily increase
Monday night across the piedmont, with precip spreading nne into
the area into Tuesday morning. Lows mainly in the upper 40s in
the piedmont to low 50s across SE coastal plain.

Long term Tuesday through Friday
As of 410 pm edt Friday...

rain will move into the area from ssw to nne during the day on
Tuesday as the upper wave and associated sfc low pres push E ne.

20 12z gfs ECMWF cmc are in good agreement that the area of light to
moderate rain will cover the entire CWA by late afternoon on Tuesday
and last through around 12z wed. Given the agreement between the
most recent suite of guidance, have increased pops to 60-70% for the
entire CWA tue-early wed. Due to the rain, high temperatures will be
be in the low 60s for the bulk of the CWA on Tuesday. After the sfc
low tracks through eastern portions of the CWA Wed am, the main area
of rain will exit the region. A few showers will still be possible
during the day, but temperatures should warm to near 70 on Wednesday
if the rain exits early enough (this looks more likely in southern
parts of the cwa).

12z GFS cmc track another sfc low weak cold front through the area
Thursday-Friday am, but ECMWF does not have a rainy solution. Thus,
have kept pops at or below 40%. Highs around 70 lows between 50-55
expected thu-fri. An upper trough amplifies over the eastern us
Friday pm into next weekend as sfc low pressure is forecast to
deepen over the northeastern us at the same time. This will set the
stage for another chance of rain late Friday as well as below
average temperatures next weekend.

Aviation 14z Saturday through Wednesday
As of 640 am edt Saturday...

vfr through the 12z TAF period. Winds today will remain light
at less than 10 kt, genly from the N but will shift onshore to
the E NE near the coast in the aftn. Expect skc through most of
the TAF period for all terminals (some high clouds increasing
late).

Outlook:VFR conditions will continue sun, with high pressure
over the region. A disturbance approaches the region late Monday
and Tuesday bringing the next chance for flight restrictions
and rain.

Marine
As of 350 am edt Saturday...

a weak cold front is dropping n-s across the marine area early
this morning. The wind will become NE and briefly increase to
15-20kt immediately behind the cold front mainly over the
bay ocean and possibly the lower james. The duration will only
be 1-2hrs, so this will be handled with an mws over the bay.

Waves in the bay could also increase to 2-3ft. Otherwise, high
pressure will prevail over the region today and Sunday resulting
in benign marine conditions. The wind will become sea bay
breeze driven by this aftn, the S SE 5-10kt tonight, before
becoming N Sunday morning then E 10kt by Sunday aftn as high
pressure shifts toward new england and low pressure moves into
the deep south. High pressure pushes off the SRN new england
coast early next week as low pressure moves off the southeast
coast. This will result in increasing onshore flow. An E wind is
expected to reach 10-15kt by Monday, and then 15-25kt by Monday
night Tuesday Tuesday night. Onshore flow will result in seas
building to 6-10ft Tuesday Tuesday night, with 4-5ft waves in
the mouth of the bay (2-4ft elsewhere in the bay). Broad low
pressure crosses the region Wednesday with the wind becoming nw
in the wake of the low.

Akq watches warnings advisories
Md... None.

Nc... None.

Va... None.

Marine... None.

Synopsis... Mas
near term... Mas
short term... Mas mam
long term... Eri
aviation... Lkb mas
marine... Ajz


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
PPTM2 - 8578240 - Piney Point, MD 5 mi42 min SSW 5.1 G 6
LWTV2 - 8635750 - Lewisetta, VA 14 mi42 min E 1.9 G 2.9 47°F 53°F1032.8 hPa (+0.7)
SLIM2 - 8577330 - Solomons Island, MD 15 mi42 min E 5.1 G 7 47°F 52°F1032.4 hPa (+0.5)
44042 - Potomac, MD 18 mi32 min ENE 5.8 G 7.8 46°F 1034.1 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 22 mi42 min NNE 4.1 G 6 46°F 1033.2 hPa (+0.4)
NCDV2 25 mi42 min ESE 4.1 G 5.1 49°F 54°F1031.9 hPa (+0.0)
44062 - Gooses Reef, MD 30 mi32 min E 3.9 G 5.8 47°F 1033.1 hPa
BISM2 - 8571421 - Bishops Head, MD 32 mi42 min NE 6 G 7 48°F 51°F1032.8 hPa (+0.5)
CA2 - 8571892 - Cambridge, MD 42 mi42 min 51°F 53°F1033.2 hPa (+0.4)
BSLM2 - Chesapeake Bay, MD 44 mi132 min NNE 1 46°F 1033 hPa29°F

Wind History for Piney Point, MD
(wind in knots)    EDIT      (on/off)   Help
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
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
Last
24hr
NW15
NW18
NW16
NW15
NW15
NW11
N9
N10
E3
S1
SW1
W2
W5
NE6
E10
E7
E7
NE4
G7
E3
E2
E3
E7
SE3
G6
SW5
1 day
ago
N4
NW8
N20
NW11
N25
N28
N30
N28
N32
N26
N23
N19
G23
N17
N20
N21
N18
N19
N20
N21
N19
NW21
NW18
G22
N18
NW18
2 days
ago
N6
N3
SE7
SE12
SE12
SE13
SE12
SE12
SE15
SE13
SE19
SE16
SE16
SE17
SE11
E1
N9
N23
N14
N3
W4
NW8
NW7
NW5

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity, MD11 mi49 minNNE 610.00 miFair51°F27°F39%1032.3 hPa
St Marys County Airport, MD12 mi65 minN 010.00 miFair50°F28°F43%1033.2 hPa
Patuxent River, Naval Air Station, MD16 mi1.8 hrsVar 410.00 miPartly Cloudy51°F26°F38%1032.7 hPa
Tappahannock-Essex County Airport, VA24 mi67 minNNW 410.00 miFair52°F31°F46%1032.8 hPa

Wind History from NUI (wind in knots)
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
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
Last 24hrW8
G15
NW8
G19
NW9NW7W105E5NE6NE3CalmCalmCalmCalmCalmNE10NE10
G17
NE5NE7NE6CalmNE45E5N6
1 day agoSW5SW5NW11
G21
NW6
G17
NW14
G32
W16
G34
W18
G30
NW14
G28
NW11
G18
NW12
G23
NW8NW4W6W7W6NW7NW7NW6NW7NW6NW11
G16
NW11
G18
NW9
G14
NW9
G19
2 days ago4SW6S7CalmE8E8E8E7E6E6E9E8E11SE8E6CalmNW444N4CalmW6W5W4

Tide / Current Tables for Coles Point, Virginia
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Coles Point
Click for Map
Sat -- 12:40 AM EDT     0.25 feet Low Tide
Sat -- 12:53 AM EDT     Moonset
Sat -- 06:22 AM EDT     Sunrise
Sat -- 06:50 AM EDT     2.25 feet High Tide
Sat -- 11:03 AM EDT     Moonrise
Sat -- 01:44 PM EDT     0.18 feet Low Tide
Sat -- 07:43 PM EDT     1.95 feet High Tide
Sat -- 07:48 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.30.40.81.31.92.22.221.61.20.80.50.30.20.40.81.31.71.91.91.71.30.9

Tide / Current Tables for Point Patience, 0.1 mile southwest of, Maryland Current
   EDIT      (on/off)   Help   One Week of Data
Point Patience
Click for MapFlood direction 315 true
Ebb direction 145 true

Sat -- 12:53 AM EDT     Moonset
Sat -- 01:12 AM EDT     0.00 knots Slack
Sat -- 03:51 AM EDT     0.61 knots Max Flood
Sat -- 06:21 AM EDT     Sunrise
Sat -- 06:46 AM EDT     -0.00 knots Slack
Sat -- 10:52 AM EDT     -0.94 knots Max Ebb
Sat -- 11:02 AM EDT     Moonrise
Sat -- 03:28 PM EDT     0.00 knots Slack
Sat -- 04:55 PM EDT     0.29 knots Max Flood
Sat -- 07:03 PM EDT     -0.00 knots Slack
Sat -- 07:48 PM EDT     Sunset
Sat -- 10:42 PM EDT     -0.53 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.3-0.10.30.50.60.50.2-0.1-0.4-0.7-0.9-0.9-0.9-0.7-0.4-0.10.20.30.20-0.2-0.4-0.5-0.5

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Wakefield, VA (11,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Dover AFB, DE
   (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.