Saturday, August24, 2019 L-36.com


Marine Weather and Tides
Rock Point, MD

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:28AMSunset 7:51PM Saturday August 24, 2019 3:48 PM EDT (19:48 UTC) Moonrise 12:00AMMoonset 1:59PM Illumination 32% Phase: Waning Crescent; Moon at 24 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- 138 Pm Edt Sat Aug 24 2019
.small craft advisory in effect from 6 pm edt this evening through Sunday afternoon...
This afternoon..NE winds 10 kt. Waves 2 ft. A slight chance of showers.
Tonight..NE winds 5 to 10 kt with gusts to 20 kt. Waves 2 ft.
Sun..NE winds 10 to 15 kt with gusts to 25 kt. Waves 3 ft.
Sun night..NE winds 10 to 15 kt with gusts to 25 kt. Waves 3 ft.
Mon..NE winds 10 to 15 kt with gusts to 20 kt. Waves 3 ft.
Mon night..NE winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Tue..E winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers.
Wed..S winds 5 kt...becoming W after midnight. Waves 1 ft. A chance of tstms. A chance of showers. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 138 Pm Edt Sat Aug 24 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will settle north of the waters this weekend. Low pressure off the florida coast will likely move northward offshore of the eastern seaboard early next week. Small craft advisories may be needed Sunday night into Monday.


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


Area Discussion for - Wakefield, VA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kakq 241840
afdakq
area forecast discussion
national weather service wakefield va
240 pm edt Sat aug 24 2019

Synopsis
A cold front will stall along the carolina coast over the weekend.

High pressure will build in from the north behind the front
through today. Low pressure is expected to develop along the
front early next week.

Near term through tonight
As of 1000 am edt Saturday...

latest analysis indicating yesterday's sfc cold front well off
to our s, with ~1029mb sfc high pressure centered over the
northern great lakes. Aloft, a trough is situated over eastern
ny pa and is progged by the models to slowly sag SE through the
day. Ample low mid level moisture is in place over the central
and southern portions of the local area with radar depicting an
area of light showers over south central va, slowly advancing
eastward. Temperatures are significantly cooler than the past
several days and range from the mid 60s in south central va to
the upper 60s lower 70s across the remainder of the area.

Have raised pops into the 30-40% chance range a little farther n
to the southside of metro ric late this morning into the mid
aftn period, before somewhat drier air advects in from the n.

Maintained 30-60% pops across southern va and NE nc through the
aftn, with highest pops expected after 18z focusing over far se
va NE nc. Skies will be mainly cloudy for southern va and NE nc,
with variably cloudy partly sunny skies across the northern 1 3
of the cwa. Highs will generally range from the mid to upper
70s, potentially cooler in areas where rain showers persist
(only lower 70s for south central va and interior NE nc).

Shortwave aloft rotates SE through the region tonight, but deep
layered moisture becomes confined to far SE sections so will
focus chance to low-end likely pops there (at least through 06z),
with mainly dry conditions elsewhere. Lows range from the upper
50s NW to around 70f se.

Short term Sunday through Monday
As of 400 am edt Saturday...

by Sunday morning, the surface high looks like it will push the
moisture far enough south to limit the chances for any showers
to mainly NE nc and far SE va with drying of the mid and upper
level expected to continue through the day on Sunday suppressing
the pcpn farther south through the day. However, the low level
moisture should remain in place with strong easterly flow
through about 850 mb. That may be enough to hold clouds in place
and could limit the day time heating. For now have gone close
to 80f most areas, but if those lower clouds do hold together
could see readings more in the mid 70s toward the southern va
piedmont.

The forecast for Sunday night into Monday could change rapidly
over the next few days depending on the potential development of
a tropical system of the SE us coast. The models are struggling
with the development and location of the system with the 00z
gfs quicker to develop the system and move it northward off the
carolinas by Monday afternoon while the 00z ECMWF continues to
be slower and farther to the SE off the coast with much less
impact to the region. Very minor changes to pops with this
update, maintained low chance pops with the moisture overrunning
the wedging high. Again will need to monitor the potential
tropical development along the SE us coast this weekend.

Long term Monday night through Friday
As of 300 pm edt Friday...

the early part of the extended forecast will depend much upon any
development and potential track of the tropical disturbance
currently off the fl coast. Latest NHC outlook suggests that
this system will stay well off the local coast. Despite that,
given the proximity to the tropical system and the potential for
some tropical type showers to move across the area, and some
reinforcing moisture lift from weak upper disturbances moving
across the mid atlc and NE states in the w-sw flow aloft, will
maintain low chance pops Mon night through thu. However, if the
tropical system stays further offshore it is conceivable that
much of the middle of next week will be dry other than perhaps
some widely scattered afternoon evening storms. Otherwise, by
Friday the GFS and ECMWF both show drying across the area as a
ridge axis builds in from the west. As such, have kept Friday
dry.

Temps on Tuesday will trend slightly below normal due to the
extensive cloudiness (although it will be muggy), but then rise to
near normal for wed-fri.

Aviation 19z Saturday through Thursday
As of 200 pm edt Saturday...

scattered light rain showers will continue across far southern
va and NE nc into this evening. Still primarilyVFR conditions
(though some MVFR CIGS may affect kecg this evening tonight). N
to NE winds will range around 10 to 15 knots with gusts up to
20kt along the immediate coast and avg 5-10 kt farther inland.

Partly to mostly sunny N and partly-mostly cloudy S for Sunday
butVFR conditions are expected throughout. NE winds will again
be somewhat elevated gusty along the coast at 10-15kt with gusts
to 20 kt (with ~10kt inland).

Outlook: low pressure developing along a stalled front and
high pressure centered to our N NE will keep an easterly flow
across the region mon-tue, allowing for ample moisture, a chance
for showers, and the potential for sub-VFR ceilings from time
to time (especially at eastern TAF locations) mon-tue.

Marine
As of 630 am edt Saturday...

a NE wind has increased to 15-20kt across the bay and mouth of
the james early this morning. SCA flags have been added through
10 am as high-res guidance has the wind diminishing to 10-15kt
later this morning into the aftn.

Previous discussion...

a cold front is pushing swd through nc early this morning
as high pressure builds across the great lakes. The wind has shifted
to nne behind the front 10-15kt, and this has resulted in 3-4ft seas
in the ocean and 2-3ft waves in the bay. The high will build across
upstate ny and into NRN new england today as the front settles off
the carolina coast. Therefore, the wind will shift to NE and remain
10-15kt. The high strengthens and remains nearly stationary tonight.

Meanwhile, an inverted trough begins to develop along the old
frontal boundary and the pressure gradient will tighten along the
mid-atlantic coast. A NE wind should increase to 15-25kt tonight
into Sunday, with seas building to 4-5ft N and 5-6ft S later tonight
into Sunday. SCA flags remain in effect for the bay and lower james,
and have been added for the ocean (primarily for seas) and the
currituck sound. The wind will remain NE Sunday night into Monday as
tropical low pressure organizes off the carolina coast. Sca
conditions for seas (potentially building to 5-8ft) will likely
linger into early next week as the flow remains onshore and with low
pressure over the ocean. By Tuesday night and Wednesday the wind
should become N and then SW as the low pulls well offshore. This
should allow seas to subside.

Akq watches warnings advisories
Md... None.

Nc... None.

Va... None.

Marine... Small craft advisory until 6 pm edt Sunday for anz630>632-634-
638.

Small craft advisory from 4 am to 10 pm edt Sunday for anz633.

Small craft advisory until 6 am edt Monday for anz650-652-654-
656-658.

Synopsis... Ajb cmf
near term... Ajb lkb
short term... Ajb ess
long term... Mrd
aviation... Ajb lkb
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 12 mi55 min NE 6 G 12
SLIM2 - 8577330 - Solomons Island, MD 16 mi55 min N 8.9 G 12 74°F 82°F1020.4 hPa
NCDV2 17 mi55 min N 4.1 G 8.9 78°F 84°F1020 hPa
LWTV2 - 8635750 - Lewisetta, VA 21 mi55 min NE 4.1 G 6 76°F 79°F1020.7 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 22 mi55 min N 8.9 G 17 73°F 1021.5 hPa
44062 - Gooses Reef, MD 28 mi37 min NNE 12 G 12 74°F 1021.8 hPa
BISM2 - 8571421 - Bishops Head, MD 37 mi55 min N 6 G 11 77°F 79°F1020.8 hPa
BSLM2 - Chesapeake Bay, MD 38 mi139 min NNE 2.9 76°F 1021 hPa57°F
CA2 - 8571892 - Cambridge, MD 42 mi55 min NE 7 G 8 76°F 82°F1020.5 hPa
WASD2 - 8594900 - Washington, DC 47 mi55 min NNE 1.9 G 5.1 78°F 83°F1021.2 hPa
TPLM2 - Thomas Point, MD 49 mi49 min N 7 G 8.9 73°F 81°F1022.1 hPa (-0.6)55°F

Wind History for Piney Point, MD
(wind in knots)    EDIT      (on/off)   Help
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
12
PM
1
PM
2
PM
Last
24hr
NE12
G17
NE13
G21
N14
G18
NE5
G8
NE10
G15
NE7
G11
N12
NE9
G13
NE5
G8
N6
N6
N7
N10
N8
N7
NE5
NE6
NE7
NE7
G10
NE5
G10
NE6
G10
NE8
NE6
G10
N10
G14
1 day
ago
N4
--
SE4
S7
S6
SW16
G20
W10
G13
SW7
G15
NW8
G11
SW4
G8
SW5
G13
W7
NW7
G11
W8
W7
G10
W8
G11
W9
NW6
N7
NE4
E2
S1
G4
NE6
NE15
G19
2 days
ago
SW7
G19
S7
W4
G10
W7
G10
SW5
G8
SW6
G9
W8
G12
W7
G10
W9
G12
SW5
G8
SW3
G6
W4
G8
NW10
NW10
W7
G11
W10
W7
W7
NW6
W1
--
NW1
N2
NW3

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St Marys County Airport, MD11 mi66 minN 410.00 miFair75°F57°F54%1021.7 hPa
St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity, MD17 mi56 minNNE 710.00 miA Few Clouds82°F59°F46%1020.2 hPa
Patuxent River, Naval Air Station, MD18 mi57 minN 510.00 miPartly Cloudy79°F57°F49%1020.6 hPa

Link to 5 minute data for K2W6

Wind History from 2W6 (wind in knots)
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
-12
PM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
Last 24hrNE5NE4NE4N6NW3CalmN3CalmCalmCalmCalmCalmCalmCalmCalmCalmNE3CalmCalmN4N5N4NE6NW5
1 day agoW5SW7SW5S3S7
G20
SW7SW5W7SW3CalmSW5SW6SW5SW4W4CalmCalmN3NE3N3N6N7N4NE5
2 days agoSW6W8SW5SW5S3SW5SW8SW6W3CalmW3W3W5W4W5W3W4SW4SW4SW3W3SW4SW8SW7

Tide / Current Tables for Colton's Point, Maryland
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Colton's Point
Click for Map
Sat -- 12:23 AM EDT     Moonrise
Sat -- 03:22 AM EDT     0.47 feet Low Tide
Sat -- 06:29 AM EDT     Sunrise
Sat -- 09:39 AM EDT     1.76 feet High Tide
Sat -- 02:58 PM EDT     0.34 feet Low Tide
Sat -- 02:59 PM EDT     Moonset
Sat -- 07:48 PM EDT     Sunset
Sat -- 09:54 PM EDT     2.10 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
1.20.90.60.50.50.60.91.31.61.71.71.61.20.80.50.30.40.60.91.41.822.12

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 -- 12:21 AM EDT     Moonrise
Sat -- 01:07 AM EDT     -0.68 knots Max Ebb
Sat -- 05:46 AM EDT     0.00 knots Slack
Sat -- 06:28 AM EDT     Sunrise
Sat -- 06:48 AM EDT     0.16 knots Max Flood
Sat -- 08:25 AM EDT     -0.00 knots Slack
Sat -- 12:27 PM EDT     -0.51 knots Max Ebb
Sat -- 02:58 PM EDT     Moonset
Sat -- 04:08 PM EDT     0.00 knots Slack
Sat -- 06:57 PM EDT     0.56 knots Max Flood
Sat -- 07:47 PM EDT     Sunset
Sat -- 10:05 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
-0.6-0.7-0.6-0.5-0.3-0.10.10.20.1-0.1-0.3-0.4-0.5-0.5-0.4-0.3-00.20.50.60.50.30-0.3

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Wakefield, VA (15,3,4,5)
      (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.