Wednesday, April25, 2018 L-36.com


Marine Weather and Tides
Rock Point, 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 6:15AMSunset 7:55PM Wednesday April 25, 2018 9:59 PM EDT (01:59 UTC) Moonrise 2:25PMMoonset 3:05AM Illumination 82% Phase: Waxing Gibbous; Moon at 11 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- 758 Pm Edt Wed Apr 25 2018
.small craft advisory in effect through Thursday morning...
Tonight..NW winds 10 to 15 kt. Gusts up to 20 kt... Increasing to 25 kt late. Waves 2 ft. A chance of showers this evening.
Thu..NW winds 10 to 15 kt with gusts to 25 kt... Becoming sw 5 to 10 kt late. Waves 1 to 2 ft.
Thu night..SE winds 5 to 10 kt. Waves 1 to 2 ft. Rain.
Fri..SE winds 5 to 10 kt...becoming sw in the afternoon. Waves 2 to 3 ft. Rain.
Fri night..W winds 5 to 10 kt. Waves 1 ft.
Sat..SW winds 5 to 10 kt. Waves 1 ft.
Sat night..NW winds 5 to 10 kt. Waves 1 to 2 ft.
Sun..NW winds 10 to 15 kt. Waves 2 ft.
Mon..SW winds 5 to 10 kt. Waves 1 to 2 ft.
ANZ500 758 Pm Edt Wed Apr 25 2018
Synopsis for the tidal potomac and md portion of the chesapeake bay.. Low pressure will move away from the waters tonight. High pressure will settle over the waters on Thursday. Low pressure will approach the waters Thursday night before passing through Friday. A cold front will pass through Saturday and high pressure will return for early next week. Small craft advisories will likely be needed on Friday and may be needed Sunday.

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 260138
afdakq
area forecast discussion
national weather service wakefield va
938 pm edt Wed apr 25 2018

Synopsis
Low pressure lifts northeast and away from the area tonight.

Weak high pressure returns Thursday. The next area of low
pressure crosses the local area late Thursday night through
Friday. Dry weather is on tap this weekend and early next week.

Near term until 6 am Thursday morning
As of 930 pm edt Wednesday...

cold pool aloft along with merging outflow bndrys resulted in
the pulse tstrms this aftrn. Svrl reports of pea to marble size
hail, but nothing svr reported.

Systm will be slow to depart tonight with shwrs tapering off
then ending along the ERN shore shortly after 06z. Increased
pops along the lwr md ERN shore thru midnite based on radar
trends and kept iso thunder. Pcpn has ended along and west of
i95. Skies become pt cldy after midnite as drier air filters
in behind the departing low. Lows upr 40s NW to the mid 50s se.

Short term 6 am Thursday morning through Saturday
As of 300 pm edt Wednesday...

a brief break from the unsettled weather Thursday... Although
expecting clouds to begin arriving increasing from the ssw as
the next area of low pressure tracks through tn NRN al NRN ga.

Expect most areas to be dry through the day, although did allow
slight chc pops over interior NE nc after 21z. Highs Thu mainly
70-75f, except 60s at the beaches.

A quick increase in pops (to 40-80%) Thu night (after 06z) as
low pressure enters the fa from the sw. Keeping pops 50-70% ne
half of the fa Fri morning... Tapering to 20-30% far sw. The low
pressure area lifts to the NE of the local area Friday
afternoon... However will be keeping 20-30% as a low pressure
trough remains INVOF the fa. Otherwise... Mostly cloudy Friday
morning, then some partial sunshine in the afternoon. Lows
Thursday night from near 50 N to the mid 50s s. Highs Friday
from the upr 60s NW and along the immediate coast to the low mid
70s central southern locales.

Improved conditions Friday night and Saturday, although do
expect a dry cold front to cross the region Saturday afternoon.

Partly to mostly clear during this time. Lows Friday night from
the upr 40s NW to the mid 50s se. Highs Saturday mainly 70-75,
except upr 60s at the beaches.

Long term Saturday night through Wednesday
As of 300 pm edt Wednesday...

some delightful spring weather on tap early next week as high
pressure builds SE from the gt lakes region Sun to a position
over the local area Mon then off the mid atlantic coast Tue wed.

Cool to start, then a warming trend.

Lows Sat Sun nites near 40 NW to near 50 se. Highs Sun in the 60s,
mid 60s-lwr 70s mon. Lows Mon nite mid 40s NW to lwr 50s se. Highs
tues 75-80. Lows tues nite in the 50s. Highs Wed upr 70s-lwr
80s.

Aviation 02z Thursday through Monday
As of 930 pm edt Wednesday...

sct-bkn MVFR CIGS cont across the area as the upr level low
slowly moves off the coast. Kept vcsh at sby based on latest
radar trends and may have to tempo shwrs. Clouds decrease w-e
late tonight and thurs as high prs builds into the area.

Outlook...

the next low prs systm will impact the region by late Thu night
into Fri afternoon W flight restrictions likely due to lower
bkn-ovc CIGS and shras. MainlyVFR conditions expected sat-sun.

Marine
As of 330 pm edt Wednesday...

sca headlines remain in effect through 1 am Thu for the mouth of
the bay, and well into Thu aftn for all coastal waters due to
lingering long period E SE swell of 10-12 seconds. Seas
currently avg 6-8 ft with waves to around 4 ft at the mouth of
the bay.

Broad low pressure moving into the DELMARVA this aftn and will
continue to lift NE into new jersey this evening through
tonight. Winds are relatively light with S to SE flow around 10
kt or less (light variable in some areas). Winds will shift to
the W to NW at around 15 kt later tonight into Thu morning.

While some occasional 20 kt gusts will probably develop for a
few hrs early Thu morning across much of the area (especially
in the bay N of new pt comfort), does not look to be enough to
warrant SCA headlines since there is minimal cold advection in
the wake of this cold front. Weak sfc high pressure builds in
fm the nnw on thu, with winds diminishing by late morning and
shifting back to onshore during the mid late aftn hrs through
thu evening. Another low pressure area will affect the waters
thu night thru fri, as it tracks from the SE u.S. Through the
local area on Fri and off to the NE by Fri night. Another cold
front crosses the waters Sat night, increasing winds close to
sca levels, then diminishing Sun as high pressure returns.

Akq watches warnings advisories
Md... None.

Nc... None.

Va... None.

Marine... Small craft advisory until 1 am edt Thursday for anz634.

Small craft advisory until 6 pm edt Thursday for anz650-652-
654.

Small craft advisory until 4 pm edt Thursday for anz656-658.

Synopsis... Jdm
near term... Jdm mpr
short term... Alb jdm
long term... Mpr
aviation... Mpr
marine... Lkb


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PPTM2 - 8578240 - Piney Point, MD 12 mi42 min N 5.1 G 5.1
SLIM2 - 8577330 - Solomons Island, MD 16 mi42 min WNW 4.1 G 6 60°F 54°F1006.2 hPa
NCDV2 17 mi42 min WSW 2.9 G 4.1 60°F 57°F1006.3 hPa
LWTV2 - 8635750 - Lewisetta, VA 21 mi42 min NW 6 G 8 61°F 55°F1006.7 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 22 mi42 min NNW 13 G 15 60°F 1007 hPa
44042 - Potomac, MD 25 mi30 min WNW 9.7 G 12 58°F 1007.7 hPa
44062 - Gooses Reef, MD 28 mi30 min N 5.8 G 7.8 57°F 1006.5 hPa
BISM2 - 8571421 - Bishops Head, MD 37 mi42 min W 8.9 G 9.9 58°F 62°F1006.4 hPa
BSLM2 - Chesapeake Bay, MD 38 mi150 min NW 2.9 60°F 1005 hPa56°F
CA2 - 8571892 - Cambridge, MD 42 mi42 min 61°F 57°F1006.6 hPa
WASD2 - 8594900 - Washington, DC 47 mi42 min W 1.9 G 2.9 61°F 56°F1006.8 hPa
TPLM2 - Thomas Point, MD 49 mi60 min NW 8 G 8.9 61°F 54°F1006.9 hPa (+1.2)58°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 mi83 minWNW 57.00 miOvercast59°F59°F100%1006.8 hPa
St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity, MD17 mi67 minW 66.00 miLight Rain Fog/Mist60°F57°F93%1006.2 hPa
Patuxent River, Naval Air Station, MD18 mi2.1 hrsWSW 55.00 miFog/Mist62°F61°F96%1005.3 hPa

Wind History from NUI (wind in knots)
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Last 24hr--------------------E5E5E4NE55S6S6W5W7W7W4W5W3W6
1 day agoE7E6E8E9E9
G17
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2 days ago--------------------CalmE5E8SE7SE10SE10
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Tide / Current Tables for Colton's Point, Potomac River, Maryland
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Colton's Point
Click for Map
Wed -- 04:05 AM EDT     Moonset
Wed -- 05:16 AM EDT     0.17 feet Low Tide
Wed -- 06:17 AM EDT     Sunrise
Wed -- 11:45 AM EDT     2.07 feet High Tide
Wed -- 03:25 PM EDT     Moonrise
Wed -- 05:48 PM EDT     0.12 feet Low Tide
Wed -- 07:52 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
21.71.20.80.40.20.20.511.51.822.11.81.410.60.30.10.30.71.21.72

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

Wed -- 02:13 AM EDT     -0.68 knots Max Ebb
Wed -- 04:04 AM EDT     Moonset
Wed -- 06:04 AM EDT     0.00 knots Slack
Wed -- 06:16 AM EDT     Sunrise
Wed -- 08:10 AM EDT     0.47 knots Max Flood
Wed -- 10:40 AM EDT     -0.00 knots Slack
Wed -- 02:40 PM EDT     -0.88 knots Max Ebb
Wed -- 03:24 PM EDT     Moonrise
Wed -- 06:45 PM EDT     0.00 knots Slack
Wed -- 07:51 PM EDT     Sunset
Wed -- 08:51 PM EDT     0.52 knots Max Flood
Wed -- 11:29 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.4-0.6-0.7-0.7-0.5-0.3-00.30.50.40.2-0.1-0.4-0.7-0.8-0.9-0.8-0.6-0.30.10.40.50.40.1

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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Wind Forecast for Wakefield, VA (21,6,7,8)
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Ground Weather Radar Station Dover AFB, DE
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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.