Sunday, April22, 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 6:19AMSunset 7:52PM Sunday April 22, 2018 2:53 AM EDT (06:53 UTC) Moonrise 11:06AMMoonset 12:51AM Illumination 44% Phase: First Quarter Moon; Moon at 7 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 Sun Apr 22 2018
Overnight..S winds 10 kt. Waves 1 ft.
Sun..SE 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. Gusts up to 20 kt in the afternoon. 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 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft. Rain.
Tue night..E winds 10 to 15 kt with gusts to 25 kt. Waves 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.
Thu..SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
ANZ500 132 Am Edt Sun Apr 22 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 before moving off the new england coast Monday. 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 Rock Point, MD
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location: 38.23, -76.73     debug


Area Discussion for - Wakefield, VA
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Fxus61 kakq 220454
afdakq
area forecast discussion
national weather service wakefield va
1254 am edt Sun apr 22 2018

Synopsis
High pressure remains centered off the mid atlantic coast
through Sunday night. Low pressure tracks from the gulf coast
states northeast up along the east coast late Monday through
midweek.

Near term until 6 am this morning
As of 845 pm edt Saturday...

early evening weather analysis reveals ~1031mb sfc high pressure
oriented just offshore of the mid-atlantic coast, with a surface
ridge extending down the eastern seaboard this evening. To the
west, a slowly weakening upper level closed low is noted rolling
across the southern plains toward the ozarks, with a developing
inverted trough nosing into the mid-south.

A stellar night weather-wise over the local area, with early
evening temperatures falling into the mid 40s to low 50s over
the local area at 01z. Some mid to high clouds 15 to 25 kft agl
will continue to push across the northern mid-atlantic and the
va piedmont from the NW overnight. Otherwise, remaining mainly
clear across the tidewater and nc coastal plain, as surface high
slides farther offshore into Sunday morning. Only minor changes
to sky t TD necessary, with the going forecast generally on
track. Early morning lows upr 30s to near 40... Low to mid 40s
inland with increasing cloudiness late.

Short term 6 am this morning through Tuesday
As of 204 pm edt Saturday...

sfc high becomes centered off the mid atlantic coast Sun and
sun night. Tsctns cont to show mid high moisture spilling east
of the mts. Skies bcmg mstly cloudy north, pt sunny south.

Highs in the 60s except mid-upr 50s near the beaches. Drier air
filters south across the DELMARVA Sun night. Thus, mstly clr
ne, pt cloudy elsewhere. Lows upr 30s-mid 40s.

Unsettled wx pattern shaping up next week as low pressure ejects
east from the nations mid section sun, into the tenn valley by late
mon. Models prog a potent SRN stream S W around the base of the
long wave trof Mon night the move it NE to near the carolina
coast tue. This keeps the local area on the cooler side of this
system with a general rain expected to overspread the area.

Keeping most of Mon dry except for some low chc pops after 21z
across the swrn zones. Otw, bcmg cloudy with highs in the 60s
except for mid-upr 50s at the beaches. Rain overspreads the fa
mon night except for the lwr md ERN shore where it may take
until 12z Tue to reach. Pops ramp up to cat-likely south of i64,
chc pops to the north. Lows Mon night mid 40s NW to mid 50s se.

Tue looks wet with cat likely pops throughout the day. Enough
lift gulf of mexico moisture noted for some areas of mdt rain
along and west of i95. Highs Tue upr 50s NW to mid 60s se.

Long term Tuesday night through Saturday
As of 350 pm edt Saturday...

after the main area of rain exits the region between 6-12z
Wednesday, we should see enough sunshine for temperatures to warm up
to around 70 Wed pm. 21 12z gfs ECMWF have showers lingering
throughout the day on wed, so kept pops between 50-60%. GFS even
hints at the possibility of a few thunderstorms Wed afternoon. Most
recent guidance has backed off on the rain Thursday-Friday am. Ecmwf
has the most qpf, and the best chance of rain looks to be over
southern eastern portions of the cwa. Thus, have lowered pops to
below 30%. Highs between 68-74 lows around 50 expected thu-fri.

A potent 500mb shortwave is forecast to track over the northeastern
us Friday into the weekend. This will set the stage for another
chance of rain late Friday-Saturday as well as another shot of
below average temperatures. Still quite a bit of uncertainty
regarding the strength timing of this storm system. Highs in the 60s
on Saturday with lows dropping into the 40s Sunday am.

Aviation 06z Sunday through Thursday
As of 100 am edt Sunday...

vfr through the 06z TAF period. Expect calm winds early this
morning with a shift to the E SE at 5-10 kt later today. High
clouds increase through the TAF period.

Outlook: a disturbance approaches the region late Monday and
Tuesday bringing steady rain which will result in flight
restrictions. Restrictions will likely last through at least 12z
Wednesday before conditions slowly improve during the day.

Marine
As of 300 pm edt Saturday...

high pressure will prevail over the region thru Sunday resulting in
benign marine conditions. Wind will remain primarily sea bay breeze
driven this aftn, then 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 late Monday night Tuesday Tuesday night.

Onshore flow will result in seas building to 5-9ft Tuesday Tuesday
night, with 4-5ft waves in the mouth of the bay (2-4ft elsewhere in
the bay). Scas will eventually be needed for this time frame. Broad
low pressure crosses the region Wednesday with the wind becoming nw
in the wake of the low into thurs morning. SW flow 5-15kt then
develops for the end of next week.

Akq watches warnings advisories
Md... None.

Nc... None.

Va... None.

Marine... None.

Synopsis... Mpr
near term... Mpr mam
short term... Mpr
long term... Eri
aviation... Ajb mas
marine... Jdm


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PPTM2 - 8578240 - Piney Point, MD 12 mi54 min SSW 6 G 7
SLIM2 - 8577330 - Solomons Island, MD 16 mi54 min SSW 5.1 G 7 49°F 53°F1028.9 hPa (+0.3)
NCDV2 17 mi54 min SSE 4.1 G 5.1 51°F 56°F1028.3 hPa (+0.4)
LWTV2 - 8635750 - Lewisetta, VA 21 mi54 min SSW 8.9 G 9.9 49°F 54°F1029.2 hPa (+0.4)
COVM2 - 8577018 - Cove Point LNG Pier, MD 22 mi54 min SSW 7 G 8.9 50°F 1029.7 hPa (+0.0)
44042 - Potomac, MD 25 mi44 min S 5.8 G 7.8 50°F 1030.5 hPa
44062 - Gooses Reef, MD 28 mi44 min SSW 7.8 G 7.8 51°F 1029.4 hPa
BISM2 - 8571421 - Bishops Head, MD 37 mi54 min SSW 8 G 8.9 51°F 58°F1029.6 hPa (+0.4)
BSLM2 - Chesapeake Bay, MD 38 mi144 min S 4.1 50°F 1029 hPa40°F
CA2 - 8571892 - Cambridge, MD 42 mi54 min 47°F 54°F1029.9 hPa (+0.0)
WASD2 - 8594900 - Washington, DC 47 mi54 min S 2.9 G 2.9 52°F 54°F1029 hPa (+0.0)
TPLM2 - Thomas Point, MD 49 mi54 min S 4.1 G 5.1 50°F 51°F1029.7 hPa (+0.0)40°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 mi77 minN 010.00 miFair46°F37°F71%1029.8 hPa
St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity, MD17 mi61 minS 39.00 miFair49°F41°F74%1029 hPa
Patuxent River, Naval Air Station, MD18 mi2 hrsN 010.00 miFair48°F39°F74%1029.2 hPa

Wind History from 2W6 (wind in knots)
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Last 24hrNE3NE3E3CalmCalmE3E5N3NW3E6SE3CalmW4SW3SW6SW5CalmSE3SE3CalmCalmCalmS3S3
1 day agoW4NW4W5NW4W5NW5NW7
G14
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G18
NW9NW8
G19
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G16
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NW4NW4CalmCalmCalmCalmW3E3NE5
2 days agoNW3CalmNW6N5N3W4CalmW4S4SW8NW9
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NW6
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NW7W3W4CalmW3

Tide / Current Tables for Colton's Point, Potomac River, Maryland
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Colton's Point
Click for Map
Sun -- 01:50 AM EDT     Moonset
Sun -- 01:58 AM EDT     0.26 feet Low Tide
Sun -- 06:21 AM EDT     Sunrise
Sun -- 08:21 AM EDT     2.16 feet High Tide
Sun -- 12:06 PM EDT     Moonrise
Sun -- 02:55 PM EDT     0.17 feet Low Tide
Sun -- 05:46 PM EDT     First Quarter
Sun -- 07:49 PM EDT     Sunset
Sun -- 09:15 PM EDT     1.97 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.40.30.30.71.21.722.22.11.81.30.90.60.30.20.30.71.21.61.821.91.5

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 -- 01:50 AM EDT     Moonset
Sun -- 02:15 AM EDT     0.00 knots Slack
Sun -- 04:51 AM EDT     0.57 knots Max Flood
Sun -- 06:20 AM EDT     Sunrise
Sun -- 07:43 AM EDT     -0.00 knots Slack
Sun -- 11:50 AM EDT     -0.91 knots Max Ebb
Sun -- 12:05 PM EDT     Moonrise
Sun -- 04:22 PM EDT     0.00 knots Slack
Sun -- 05:46 PM EDT     First Quarter
Sun -- 05:57 PM EDT     0.32 knots Max Flood
Sun -- 07:48 PM EDT     Sunset
Sun -- 08:14 PM EDT     -0.00 knots Slack
Sun -- 11:52 PM EDT     -0.54 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.5-0.3-0.10.20.50.60.50.2-0.1-0.4-0.7-0.9-0.9-0.8-0.6-0.4-0.10.20.30.20.1-0.2-0.4-0.5

Weather Map and Satellite Images
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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.
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Wind Forecast for Wakefield, VA (2,6,7,8)
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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.