Sunday, March26, 2017 L-36.com


Marine Weather and Tides
Rock Point, MD

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:58AMSunset 7:27PM Sunday March 26, 2017 4:45 PM EDT (20:45 UTC) Moonrise 5:16AMMoonset 4:59PM Illumination 1% 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- 431 Pm Edt Sun Mar 26 2017
.small craft advisory in effect from 11 pm edt this evening through Monday afternoon...
Rest of this afternoon..E winds 10 kt. Waves 1 ft. A slight chance of rain.
Tonight..SE winds 10 kt with gusts to 20 kt. Waves 2 ft. A chance of rain.
Mon..S winds 10 kt with gusts to 20 kt. Waves 2 ft.
Mon night..S winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers.
Tue..S winds 5 to 10 kt. Waves 1 ft. Showers and tstms likely.
Tue night..SW winds 10 to 15 kt...becoming nw after midnight. Gusts up to 20 kt. Waves 1 to 2 ft. A chance of showers.
Wed..N winds 5 to 10 kt. Waves 1 to 2 ft.
Thu..N winds 5 to 10 kt...becoming se. Waves 1 to 2 ft. A chance of showers through the night. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 431 Pm Edt Sun Mar 26 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A front will remain stationary just south of the waters through this evening before returning north as a warm front late tonight and Monday. A cold front is expected to cross the chesapeake bay region Tuesday night. Small craft advisories are possible Tuesday night and Wednesday behind the cold front.

7 Day Forecast for Marine Location Near Rock Point CDP, MD
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location: 38.23, -76.73     debug


Area Discussion for - Wakefield, VA
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Fxus61 kakq 261309
afdakq
area forecast discussion
national weather service wakefield va
909 am edt Sun mar 26 2017

Synopsis
High pressure remains offshore the southeast coast through
Monday. A weak frontal boundary over the DELMARVA this morning
lifts back to the north late today into Monday. A cold front
crosses the region late Tuesday through Tuesday night.

Near term /until 6 pm this evening/
Updated forecast for current conditions, weak sfc boundary
appears to be stalling from king william to the middle
peninsula and on into the lower bay. Onshore winds... And bkn-ovc
low stratus settling along and N of the boundary. Temperatures
avg 45-50 f N of the boundary... While mild/mainly partly cloudy
conditions prevail elsewhere with readings in the mid 50s to
lower 60s. Have adjusted highs down a few degrees on the eastern
shore with expectation that temperatures struggle through the
low-mid 50s this aftn and in the upper 40s/around 50 f coastal
eastern shore. Dense fog not expected there, but vsbys of 1 to
2sm and perhaps some drizzle to prevail through early aftn.

Winds have just shifted to the NE at norfolk airport and newport
news as well though the extent of low clouds there is more
uncertain as will be highs this aftn (lowered hourly values
through the next few hrs but will still keep highs in the upper
60s to lower 70s as the winds are expected to gradually shift
back to the s/se later in the aftn.

Later today, weakening low pressure (sfc-aloft) will continue
to track NE toward the great lakes today... Pushing a weak low
level boundary from the W closer to the fa. Only slgt forcing
aloft w/ this system... Which will likely limit pcpn coverage as
it draws closer late this aftn. The maritime low level air will
be difficult/slow to dislodge INVOF NE portions of the fa into
this afternoon/evening. Elsewhere... Mild w/ vrb clouds. Upper
level s/w brushes NW zones late and will have a 15-30% pops
confined to the NW after 21z. Highs likely stuck to upper
40s/lower 50s coastal eastern shore, and in the 50s in low
clouds over the remainder of the eastern shore... 60s across much
of the north/northeast zones W of the bay from louisa to
tappahannock, and in the low to mid 70s a little farther south in
central/srn va- NE nc.

Short term /6 pm this evening through Tuesday/
Lows Sun night in the u40s-around 50f on the ERN shore to the
l-m50s elsewhere... W/ mainly dry conditions and partly cloudy se
to mostly cloudy on the lower md ERN shore and along-w of I 95.

Initial system lifts into/through new england mon... Leaving fa
w/ continued mild/warm conditions as hi pres (sfc-aloft) remains
invof SE CONUS coast. Vrb clouds Mon w/ pops mainly AOB 20%,
though will have a small area of 30% pops across the far n
through midday. Highs should warm a few degrees compared to
Sunday... Into the m-u70s over much of va and interior NE nc to
the u60s-l70s near the coast and over the eastern shore. Upper
level ridging to keep it mainly dry and continued warm Mon night
with lows in the 50s. Upper level trough pushes into the area
tue as a sfc cold front passes by late. Continued warm w/ highs
well into the 70s to near 80f if rain holds off. There will be
a higher chance for showers and aftn tstms. Will continue with
40-50% pops.

Long term /Tuesday night through Saturday/
Low pressure and assoc cold front will be pushing acrs the
region and off the coast Tue night... Maintaining slgt chc or
chc of showers. Dry wx expected for Wed thru most of thu, as
high pressure builds in fm the n. Chance for more showers and
possible tstms then Thu night into at least the first part of
sat, as low pressure and another assoc cold front approaches and
moves acrs the region.

Highs in the mid 60s to lower 70s wed, in the mid 50s to mid 60s
thu and fri, and in the 60s to lower 70s sat. Lows in the mid
40s to lower 50s Tue night, in the lower to mid 40s Wed night
and Thu night, and in the mid 40s to lower 50s Fri night.

Aviation /13z Sunday through Thursday/
Sfc boundary has slid S through portions of the ERN shore the
past several hours... W/ onshore winds and development of st
invof sby. The boundary currently making an attempt to make it
ssw to ric/phf/orf... Though likely to stop there by mid/late
morning. Continued ifr cigs/vsbys expected INVOF sby through
this afternoon before potentially lifting (slowly).

MainlyVFR conditions expected otherwise through the 12z taf
period. Front approaches slowly from the W late today/tonight
and may result in isold shras at ric/sby. Unsettled wx
conditions will persist across the region through mid-week. Sub-
vfr conditions will be possible late overnight and into the
early morning hours primarily due to low ceilings. Scattered
showers becoming increasingly likely by tue/tue night. Periods
of reduced aviation conditions will be possible during times of
precipitation.

Marine
Updated to increase wave heights to 3-4 ft a little farther s
for coastal waters as boundary has slipped S to around cape
charles light with e/ne winds of ~15 kt (still doesn't appear
that any headlines will be needed). Otherwise, relatively
benign marine conditions expected the next several days with no
headlines anticipated.

A frontal boundary will remain nearly stationary across the
eastern shore and mid bay today, before lifting back north of
that area tonight. Low pressure and its associated cold front
will track from the SRN plains ene and across the local area tue
into early Wed morning. Other than winds turning to the E or se
for today into this evening, expect SW or S winds 15 kt or less
tonight thru Tuesday.

As low pressure moves out to sea late Tue night thru wed
morning, winds will turn to the NW then N arnd 10 kt or less.

High pressure will build in from the N for Wed night and thu, with
ne winds 15 kt or less. Seas 2-4 ft; waves 1-2 ft thru midweek.

Akq watches/warnings/advisories
Md... None.

Nc... None.

Va... None.

Marine... None.

Synopsis... Lkb
near term... Alb/lkb
short term... Alb/lkb
long term... Tmg
aviation... Alb
marine... Ajb/jdm


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PPTM2 - 8578240 - Piney Point, MD 12 mi45 min E 8.9 G 11
SLIM2 - 8577330 - Solomons Island, MD 16 mi45 min ENE 8.9 G 12 51°F 47°F
NCDV2 17 mi45 min E 8 G 11 51°F 51°F1023.8 hPa (-2.3)
LWTV2 - 8635750 - Lewisetta, VA 21 mi45 min ENE 2.9 G 6 51°F 50°F1024.1 hPa (-2.0)
COVM2 - 8577018 - Cove Point LNG Pier, MD 22 mi45 min NE 2.9 G 5.1 48°F 1025.5 hPa (-2.0)
44042 - Potomac, MD 25 mi35 min NE 12 G 14 51°F 1023.6 hPa
44062 - Gooses Reef, MD 28 mi35 min ESE 12 G 14 47°F 1025.7 hPa
BISM2 - 8571421 - Bishops Head, MD 37 mi45 min NE 8.9 G 11 53°F 51°F1025.1 hPa (-1.7)
BSLM2 - Chesapeake Bay, MD 38 mi135 min ENE 5.1 47°F 1026 hPa44°F
CA2 - 8571892 - Cambridge, MD 42 mi45 min ENE 13 G 16 47°F 47°F1024.8 hPa (-1.7)
WASD2 - 8594900 - Washington, DC 47 mi51 min E 4.1 G 9.9 49°F 48°F1024.4 hPa
TPLM2 - Thomas Point, MD 49 mi45 min E 15 G 16 46°F 45°F45°F

Wind History for Piney Point, MD
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St Marys County Airport, MD11 mi64 minE 510.00 miOvercast52°F46°F82%1025.4 hPa
St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity, MD17 mi52 minNE 109.00 miOvercast54°F48°F80%1024.3 hPa
Patuxent River, Naval Air Station, MD18 mi53 minNE 810.00 miOvercast53°F50°F89%1024.7 hPa

Wind History from NUI (wind in knots)
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Last 24hrSE4E5NE3CalmSE4S4CalmCalmNE12
G16
NE12NE9NE11NE11NE8NE8NE8NE8NE9NE12NE8NE9E7NE6NE10
1 day agoSW10S10SW12SW12S10SW9SW6SW5SW8S9S8S8S7SW6S5S7SW6SW8SW7SW8SW7SW7SW6SW5
2 days agoE5S7SE5SE4SE7SE3CalmSE5SE7S8S8S8S7S6S6S8S7SW8S9S10S8S7SW11SW8

Tide / Current Tables for Colton's Point, Potomac River, Maryland
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Colton's Point
Click for Map
Sun -- 01:57 AM EDT     1.98 feet High Tide
Sun -- 06:16 AM EDT     Moonrise
Sun -- 07:00 AM EDT     Sunrise
Sun -- 07:54 AM EDT     0.10 feet Low Tide
Sun -- 02:19 PM EDT     1.99 feet High Tide
Sun -- 05:59 PM EDT     Moonset
Sun -- 07:24 PM EDT     Sunset
Sun -- 08:17 PM EDT     0.09 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.71.921.81.40.90.50.20.10.20.61.11.61.921.91.61.10.60.30.10.10.40.9

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

Sun -- 01:10 AM EDT     -0.00 knots Slack
Sun -- 04:58 AM EDT     -0.79 knots Max Ebb
Sun -- 06:15 AM EDT     Moonrise
Sun -- 06:59 AM EDT     Sunrise
Sun -- 08:52 AM EDT     0.00 knots Slack
Sun -- 10:57 AM EDT     0.53 knots Max Flood
Sun -- 01:30 PM EDT     -0.00 knots Slack
Sun -- 05:23 PM EDT     -0.89 knots Max Ebb
Sun -- 05:57 PM EDT     Moonset
Sun -- 07:23 PM EDT     Sunset
Sun -- 09:23 PM EDT     0.00 knots Slack
Sun -- 11:23 PM EDT     0.53 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.1-0.3-0.5-0.7-0.8-0.7-0.5-0.30.10.40.50.40.2-0.2-0.5-0.8-0.9-0.9-0.7-0.5-0.10.20.5

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 (16,3,4,5)
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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.