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 3:29 AM EDT (07:29 UTC) Moonrise 10:03AMMoonset 12:00AM Illumination 34% 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
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ANZ537 Tidal Potomac From Cobb Island To Smith Point- 132 Am Edt Sat Apr 21 2018
.small craft advisory in effect until 6 am edt early this morning...
Overnight..NE winds 15 kt with gusts to 20 kt. Waves 2 ft.
Sat..N winds 5 to 10 kt. Waves 1 to 2 ft.
Sat night..W winds around 5 kt. Waves flat.
Sun..E winds around 5 kt. Waves flat.
Sun night..SE winds 5 kt. Waves less than 1 ft.
Mon..SE winds 5 to 10 kt. Waves 1 to 2 ft.
Mon night..E winds 10 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.
ANZ500 132 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 through the 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
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location: 38.15, -76.63     debug


Area Discussion for - Wakefield, VA
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Fxus61 kakq 210503
afdakq
area forecast discussion
national weather service wakefield va
103 am edt Sat apr 21 2018

Synopsis
Cool and dry conditions continue through the weekend as high pressure
becomes centered from the great lakes to the mid atlantic region.

Moisture will increase as low pressure tracks from the gulf coast
states northeast up along the east coast late Monday through Wednesday.

Near term until 6 am this morning
As of 830 pm edt Friday...

current analysis continuing to reflect a benign, quiet wx
pattern across the eastern third of the conus. Little change to
the going forecast, with clear skies and cold temperatures
overnight. Sfc dew pts are genly rising W the lighter winds and
even though actual temperatures overnight will be similar to or
slightly warmer than last night, the potential for at least
patchy frost will be greater. It is still fairly dry however,
and do not anticipate the frost to be widespread significant
enough to issue any frost freeze headlines, but will make
mention in the hwo once again. The timing would be from about 3
or 4am through 7 to 8 am, primarily over the more rural
locations of central va, interior eastern SE va well removed
from the coast, and interior md eastern shore. Lows will range
from around 32 f in the coldest spots to 33-38 f for the
majority of the cwa, and locally in the lower 40s immediate
coast of SE va NE nc.

Short term 6 am this morning through Monday night
As of 335 pm edt Friday...

cool high pressure builds in from the NW early in the period,
before sliding offshore Sunday into Sunday night. This will
bring a mainly clear sunny day on Saturday, with gradually
increasing clouds Sunday afternoon and night. N or NE winds 10
kt or less veer around to the sse Sunday through Sunday night,
bringing gradually moderating temps.

Have gone on the high side of guidance given sunny dry
conditions on Saturday, with expected highs in the upper 50s to
lower 60 at the coast, mid to upper 60s inland. Mainly clear and
not as cold Sat night, with lows mainly in the lower 40s.

Gradually increasing clouds but still partly to mostly sunny on
average with highs mainly ranging thru the 60s. Lows in the mid
40s to low 50s Monday morning.

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 will keep temps a few
degrees cooler into the low to mid 60s across the SW tier.

Otherwise, partly sunny across the northern tier. 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 05z Saturday through Wednesday
As of 100 am edt Saturday...

vfr conditions through the 06z TAF period. Winds have
diminished significantly since sunset and now avg 5 kt or less
throughout the region. Winds later today will remain light at
less than 10 kt, genly from the N to NW 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 410 pm edt Friday...

no headlines in the short term tonight thru sun. High pressure
builds in fm the NW tonight. A northerly surge is expected
later tonight, but this surge will be sub-sca. High pressure
will then build over the region Sat and Sun resulting in benign
marine conditions. The high pushes off the SRN new england
coast early next week, as low pressure moves fm the gulf coast
states to off the SE coast Mon into wed. This will result in
increasing onshore flow. An E wind is expected to reach 10-15 kt
on mon, then 15-25 kt late Mon night Tue tue night. Onshore
flow will result in seas building to 6-10 ft by Tue night, with
4-5 ft waves in the mouth of the bay. Broad low pressure
crosses the region wed, with the wind becoming wnw in the wake
of the low.

Akq watches warnings advisories
Md... None.

Nc... None.

Va... None.

Marine... None.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PPTM2 - 8578240 - Piney Point, MD 5 mi42 min ENE 8.9 G 12
LWTV2 - 8635750 - Lewisetta, VA 14 mi42 min ENE 17 G 21 54°F1029.6 hPa
SLIM2 - 8577330 - Solomons Island, MD 15 mi42 min NE 11 G 15 52°F1029.9 hPa
44042 - Potomac, MD 18 mi30 min ENE 16 G 19 48°F 51°F1 ft1030.9 hPa (+1.2)
COVM2 - 8577018 - Cove Point LNG Pier, MD 22 mi42 min ENE 19 G 22 1030.6 hPa
NCDV2 25 mi42 min NE 1.9 G 5.1 55°F1029.3 hPa
44062 - Gooses Reef, MD 30 mi30 min E 14 G 16 47°F 1030.8 hPa (+1.6)
BISM2 - 8571421 - Bishops Head, MD 32 mi42 min NNE 14 G 16 52°F1030.3 hPa
CA2 - 8571892 - Cambridge, MD 42 mi42 min 53°F1031.2 hPa
BSLM2 - Chesapeake Bay, MD 44 mi120 min ENE 2.9 46°F 1030 hPa30°F

Wind History for Piney Point, MD
(wind in knots)    EDIT      (on/off)   Help
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N9
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N6
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SE7
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity, MD11 mi37 minNE 10 G 1710.00 miFair46°F30°F54%1029.7 hPa
St Marys County Airport, MD12 mi53 minN 010.00 miFair43°F30°F61%1030.5 hPa
Patuxent River, Naval Air Station, MD16 mi98 minNE 1110.00 miFair47°F32°F56%1029.9 hPa
Tappahannock-Essex County Airport, VA24 mi55 minN 510.00 miFair38°F32°F81%1029.1 hPa

Wind History from NUI (wind in knots)
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Last 24hrNW7NW6NW7NW6NW11
G16
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G19
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NW8
G19
NW9NW7W105E5NE6NE3CalmCalmCalmCalmCalmNE10NE10
G17
1 day agoNW444N4CalmW6W5W4SW5SW5NW11
G21
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G32
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G34
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NW8NW4W6W7W6NW7
2 days agoCalmCalmCalmCalmW4CalmSW6SW84SW6S7CalmE8E8E8E7E6E6E9E8E11SE8E6Calm

Tide / Current Tables for Coles Point, Virginia
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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
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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
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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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Wakefield, VA (3,6,7,8)
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Ground Weather Radar Station Dover AFB, DE
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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.