Saturday, April21, 2018 L-36.com


Marine Weather and Tides
Fairview Beach, VA

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 6:23AMSunset 7:53PM Saturday April 21, 2018 3:24 AM EDT (07:24 UTC) Moonrise 10:05AMMoonset 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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ANZ536 Tidal Potomac From Indian Head To Cobb Island- 132 Am Edt Sat Apr 21 2018
Overnight..N winds 10 kt. Waves 1 ft.
Sat..NW winds 5 kt. Waves less than 1 ft.
Sat night..E winds around 5 kt. Waves 1 ft.
Sun..SE winds around 5 kt. Waves 1 ft.
Sun night..SE winds around 5 kt. Waves 1 ft.
Mon..SE winds 5 to 10 kt. Waves 1 ft.
Mon night..E winds 5 to 10 kt. Waves 1 ft. A chance of rain.
Tue..E winds 5 to 10 kt. Waves 1 to 2 ft. Rain.
Wed..NW winds 5 to 10 kt. Waves 1 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 Fairview Beach, VA
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location: 38.36, -77.25     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 210120
afdlwx
area forecast discussion
national weather service baltimore md washington dc
920 pm edt Fri apr 20 2018

Synopsis
Strong high pressure will slowly migrate eastward into the
northeastern states by Sunday, and off the coast on Monday.

Unsettled weather is expected to return by the middle of next
week as low pressure approaches the area from the southeast u.S.

Near term until 6 am Saturday morning
Strong high pressure is centered over the great lakes and upper
midwest this evening. Satellite shows clear skies extending to
the ohio valley, with only a few thin cirrus propagating
eastward later tonight at worst.

Below normal temperatures are expected tonight with lows in the
30s. Went with cooler guidance as light winds are expected for
most areas (except a persistent light breeze over central md dc
metro). A freeze warning has been issued for much of the same
area as last night. Overall, temperature forecast seems to be on
track. Low levels remain dry, so any frost should be patchy.

Short term 6 am Saturday morning through Sunday night
Benign weather conditions are expected this weekend as high
pressure slowly shifts eastward from the great lakes into the
northeastern u.S. Light winds and below normal temperatures are
expected as a result. Mid to high level clouds will move
overhead Saturday afternoon and may persist into Sunday as a
jet MAX and mid level energy moves across our area. High
temperatures will be in the 60s with lows in the 30s and 40s,
though it should be warm enough to preclude frost freeze issues
in areas where the growing season has started.

Long term Monday through Friday
High pressure will shift offshore on Monday as a mid-level cutoff
trough and associated surface low move across portions of the
southeast. Conditions should remain mainly dry, with slightly
below normal temperatures.

On Tuesday, the aforementioned area of low pressure will slowly
track north toward our cwa. The latest deterministic guidance has
trended slightly slower with the northward progression of this area
of low pressure, suggesting it's possible that we remain dry much of
the day Tuesday as well. On the other hand, both the GEFS and
eps have many ensemble members that move the system along
faster, bringing precipitation in during the day Tuesday.

It appears as though the most likely time period for steadier
rainfall across the area will be Tuesday night, when both
deterministic and ensemble model guidance point toward a cool,
soaking rainfall across the region.

Forecast confidence decreases considerably for Wednesday and
Thursday, but the potential for active weather remains.

Aviation 01z Saturday through Wednesday
Vfr expected through the weekend with light winds as high
pressure passes to the north of the terminals.

Vfr conditions are expected during the day on Monday. MVFR
conditions likely begin to develop Mon night as easterly flow
ensues. Flight restrictions are likely Tuesday and Wednesday as
an area of low pressure approaches from the south bringing rain.

Winds will increase out of the east during this time as well.

Marine
Winds subsided quickly early this evening, but a subtle
pressure surge on the east side of ridging building to the north
will likely result in marginal SCA conditions in northerly
channeling over the maryland portion of the chesapeake bay.

Given trends in hi-res guidance, reconfigured the small craft
advisory, as the surge may enter northern portions of the bay by
10 pm and exit by 1-3 am. As high pressure builds further to
our north, light winds are expected over the weekend.

Sub SCA conditions are forecast Monday as a departing ridge of
high pressure will keep winds light over the waters. Sca
headlines may be needed Monday night through Tuesday as easterly
flow strengthens thanks to low pressure developing approaching
from the southeast u.S.

Tides coastal flooding
Persistent onshore flow is expected to result in increased tidal
anomalies and possible coastal flooding during the middle part
of next week.

Lwx watches warnings advisories
Dc... None.

Md... Freeze warning from 2 am to 9 am edt Saturday for mdz003>006-
503-505-507-508.

Va... Freeze warning from 2 am to 9 am edt Saturday for vaz025>031-
038>040-051-501-502-505>508.

Wv... Freeze warning from 2 am to 9 am edt Saturday for wvz051>053.

Marine... Small craft advisory until 3 am edt Saturday for anz531>533-
539>541.

Small craft advisory until 6 am edt Saturday for anz534-537-
543.

Synopsis... Imr dhof
near term... Ads imr dhof
short term... Imr dhof
long term... Kjp
aviation... Imr dhof kjp
marine... Ads imr dhof kjp
tides coastal flooding... Dhof


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCDV2 12 mi54 min Calm G 4.1 47°F 55°F1029.1 hPa
WASD2 - 8594900 - Washington, DC 37 mi54 min NE 2.9 G 8 47°F 53°F1030.7 hPa
BSLM2 - Chesapeake Bay, MD 41 mi114 min ENE 2.9 46°F 1030 hPa30°F
PPTM2 - 8578240 - Piney Point, MD 41 mi54 min E 8.9 G 12
SLIM2 - 8577330 - Solomons Island, MD 42 mi54 min NE 12 G 16 46°F 53°F1029.6 hPa
44062 - Gooses Reef, MD 46 mi44 min E 14 G 16 47°F 1030.7 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 46 mi54 min ENE 18 G 21 46°F 1030.5 hPa
LWTV2 - 8635750 - Lewisetta, VA 49 mi54 min ENE 14 G 19 49°F 54°F1029.4 hPa

Wind History for Washington, DC
(wind in knots)    EDIT      (on/off)   Help
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Last
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NW7
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G29
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stafford, Stafford Regional Airport, VA11 mi29 minNE 610.00 miFair44°F29°F55%1031.5 hPa
Quantico Marine Corps Airfield - Turner Field, VA11 mi28 minENE 1310.00 miFair49°F34°F56%1030.8 hPa
Fredericksburg, Shannon Airport, VA12 mi29 minN 510.00 miFair39°F32°F76%1029.8 hPa

Wind History from RMN (wind in knots)
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Last 24hrNW3N4N4CalmW6NW8NW15
G20
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W5NW8
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NW8N6N7NW4NW3CalmNW3N7
1 day agoCalmNW9N5CalmW3CalmCalmCalmW4NW20
G28
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G26
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G25
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NW7CalmNW4CalmW3
2 days agoCalmN4CalmCalmCalmCalmNW3CalmCalmS8S7S5S8W6CalmE4E8E9E6E5E5E3E3Calm

Tide / Current Tables for Maryland Point Light, Potomac River, Maryland
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Maryland Point Light
Click for Map
Sat -- 12:56 AM EDT     Moonset
Sat -- 03:56 AM EDT     0.15 feet Low Tide
Sat -- 06:24 AM EDT     Sunrise
Sat -- 09:37 AM EDT     1.39 feet High Tide
Sat -- 11:05 AM EDT     Moonrise
Sat -- 04:56 PM EDT     0.10 feet Low Tide
Sat -- 07:50 PM EDT     Sunset
Sat -- 10:30 PM EDT     1.22 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.60.30.20.10.20.50.81.21.41.41.210.70.50.30.20.10.20.50.81.11.21.2

Tide / Current Tables for Riverside, Potomac River, Maryland
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Riverside
Click for Map
Sat -- 12:56 AM EDT     Moonset
Sat -- 03:15 AM EDT     0.17 feet Low Tide
Sat -- 06:24 AM EDT     Sunrise
Sat -- 09:14 AM EDT     1.63 feet High Tide
Sat -- 11:04 AM EDT     Moonrise
Sat -- 04:15 PM EDT     0.11 feet Low Tide
Sat -- 07:50 PM EDT     Sunset
Sat -- 10:07 PM EDT     1.42 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.50.30.20.20.40.81.21.51.61.61.310.70.40.20.10.20.40.81.11.31.41.3

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.
target = "new">Link to Loop



Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Baltimore, MD/Washington (3,6,7,8)
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Ground Weather Radar Station Sterling, VA
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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.