Tuesday, August20, 2019 L-36.com


Marine Weather and Tides
Highland Beach, 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 6:22AMSunset 7:56PM Tuesday August 20, 2019 9:35 PM EDT (01:35 UTC) Moonrise 9:44PMMoonset 9:57AM Illumination 71% Phase: Waning Gibbous; Moon at 20 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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ANZ532 Chesapeake Bay From Sandy Point To North Beach- 906 Pm Edt Tue Aug 20 2019
.small craft advisory in effect from 9 am edt Wednesday through Wednesday evening...
Rest of tonight..S winds 5 kt. Waves less than 1 ft. Isolated showers and tstms.
Wed..S winds 10 to 15 kt with gusts to 25 kt. Waves 2 to 3 ft. Scattered showers and tstms.
Wed night..SW winds 10 to 15 kt with gusts to 20 kt. Waves 3 ft... Subsiding to 1 ft after midnight. Scattered showers and tstms.
Thu..SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Thu night..SW winds 5 kt...becoming nw after midnight. Waves 1 ft. A chance of showers.
Fri..N winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Fri night..N winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Sat..NE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the morning.
Sun..E winds 5 to 10 kt. Waves 1 ft. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 906 Pm Edt Tue Aug 20 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure in the atlantic will promote a light southerly flow over the region into Wednesday. A cold front will approach the waters late Wednesday night into Thursday and stall near or south of the area into Friday. High pressure will then settle over the area Saturday into Sunday.


7 Day Forecast for Marine Location Near Highland Beach, MD
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location: 38.93, -76.45     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 201904
afdlwx
area forecast discussion
national weather service baltimore md washington dc
304 pm edt Tue aug 20 2019

Synopsis
An upper level disturbance will cross the region this afternoon
and evening. A cold front will approach the ohio valley
Wednesday, sinking into our area Wednesday night into Thursday,
possibly stalling into Friday. Behind the front, high pressure
will build over the region for the weekend.

Near term through tonight
Hot and humid conditions are in place across the region this
afternoon with temperatures from the low to mid 90s and dew
points in the upper 60s to low 70s. This has led to heat
indices from the upper 90s to low 100s, remaining just below
heat advisory criteria.

This heat and humidity has led to the development of between
1000 and 2000 j kg of mlcape, with in excess of 1000 j kg of
dcape.

Scattered showers and thunderstorms have initiated mainly on the
remnant MCS that is crossing the appalachians early this
afternoon. Some additional isolated activity has also developed
out ahead of it on sea-breeze or remnant outflow boundaries. A
general eastward motion is expected at first as the vort
associated with the remnant MCS moves eastward, and this is
generally depicted well by the 12z cams. As outflow increases,
additional activity will likely develop, and a southward trend
in storm development coverage is likely this evening, with the
threat shifting from west of the blue ridge at during the mid
afternoon to much of central northern va, central northern md,
and the metros during the late afternoon and early evening
hours, to central va and southern md during the mid to late
evening hours. The main severe threat will be locally damaging
winds. An isolated incident of flooding due to heavy rain is
also possible given slow storm motion and high moisture levels.

A downward trend in convection will occur late this evening
with partly cloudy skies and isolated showers overnight. Some
patchy fog is also possible. Lows will range from the upper 60s
to mid 70s.

Short term Wednesday through Thursday night
Upper vort trough will be on the doorstep by Wednesday morning
and will cross the region during the day Wednesday. A surface
trough is also expected to cross the region during this time. Instability
will be a bit lower due to increased cloud cover and slightly
lower temperatures, but additional scattered showers and
thunderstorms are expected, with a few isolated thunderstorms
possible. Highs will range from the upper 80s to lower 90s.

Activity will wane again Wednesday night. Lows in the 70s.

The front will shift southward into the region on Thursday,
likely crossing much of the area through Thursday night, with
continued chances for showers and thunderstorms. Highs will
range from the upper 80s to lower 90s. Lows in the 60s to around
70f.

Long term Friday through Tuesday
The cold front will stall near, or just south of the area on Friday,
resulting in yet another chance for scattered showers and
thunderstorms throughout the day. One big change will be in the
temperatures in humidity, as highs on Friday look to only be in the
upper 70s to low 80s, with some guidance even a little cooler up
north. Humidity will also drop significantly, with dew points
dropping into the low 60s. Overnight lows will be noticeably cooler,
ranging from the mid 50s over the higher elevations to the low mid
60s east of the blue ridge. Rain chances will increase the farther
south you go, so areas in the central va piedmont and southern md
stand the best chance.

By Saturday, there still remains some discrepancies between the
global guidance, with the GFS clearing the front from the area
Friday night, resulting in dry weather on Saturday. The ecmwf
however, clears the front Saturday morning or early afternoon,
resulting in showers early in the day (primarily in the central va
piedmont and perhaps southern md). Regardless, thinking that things
clear out by noon everywhere on Saturday. Areas farther north likely
stay dry all day. Another day with highs in the upper 70s to low
80s, accompanies by low humidity, thanks to cool canadian high
pressure building in from the north. Overnight lows again will range
from the mid 50s over the higher elevations to the low mid 60s east
of the blue ridge.

High pressure dominates on Sunday, with temperatures remaining
consistent in the upper 70s to low 80s. Will carry slight chance for
some showers across central va, but thinking the front should be far
enough south by then to be out of our hair.

By Monday, some indications of a return flow are shown among the
guidance, meaning that the front would begin to lift back north as a
warm front potentially. Very low confidence at this point, as the
ecmwf keeps the front to the south, while the GFS wants to bring it
back north across the region. For now, will keep chance slight
chance pops in the forecast.

Aviation 18z Tuesday through Sunday
Scattered showers and thunderstorms are expected today. While
showers and thunderstorms will be scattered in nature, brief
reductions in visibility and ceilings are possible and some
storms could be strong to severe, with damaging winds and large
hail being the primary hazards. Patchy fog may then result in
MVFR ifr visibilities overnight. Additional showers and storms
can be expected both Wednesday and Thursday afternoon evening as
a frontal boundary moves into the region. Again, brief episodes
of subVFR conditions will be possible in passing
showers storms.

Vfr conditions are expected for much of the long term period at
every terminal except for cho. Showers and a few thunderstorms are
expected on Friday, which will lead to periods of sub-vfr
conditions. This could continue into Saturday as well.

Marine
Gusty showers and storms likely this afternoon and evening over
the waters, so if planning on being on the waters ensure you
have multiple ways to receive special marine warnings if they
are issued. A light southerly flow is expected today and
tonight, and will begin to increase Wednesday as a cold front
nears to the west. This will likely bring gusts to SCA threshold
Wednesday and Wednesday evening, so SCA has been issued. The
aforementioned front will slowly makes it way south across the
waters late Wednesday night and during the day on Thursday, with
continued chances for gusty showers storms.

Sub-sca winds expected through the weekend. However, scattered
showers and thunderstorms on Friday could lead to some brief gusty
winds. Best chance for this activity will be in the central bay and
lower tidal potomac.

Lwx watches warnings advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... Small craft advisory from 1 pm to 7 pm edt Wednesday for
anz530-531-535-536-538-539-542.

Small craft advisory from 9 am Wednesday to midnight edt
Wednesday night for anz532>534-537-540-541-543.

Synopsis... Mm
near term... Mm
short term... Mm
long term... Cjl
aviation... Mm cjl
marine... Mm cjl


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TPLM2 - Thomas Point, MD 2 mi35 min S 14 G 15 79°F 83°F1019 hPa (+1.7)71°F
APAM2 - 8575512 - Annapolis, MD 4 mi65 min 80°F 1017.5 hPa
CPVM2 6 mi65 min 82°F 72°F
BSLM2 - Chesapeake Bay, MD 17 mi125 min SSW 2.9 77°F 1017 hPa71°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 20 mi65 min WSW 8 G 8.9 80°F 1018.1 hPa
FSNM2 20 mi65 min S 1.9 G 5.1 79°F 1018 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 22 mi65 min S 4.1 G 5.1 81°F 86°F1018 hPa
BLTM2 - 8574680 - Baltimore, MD 24 mi65 min W 4.1 G 6 79°F 84°F1017.6 hPa
44062 - Gooses Reef, MD 26 mi47 min WNW 9.7 G 12 78°F 1019.3 hPa
WASD2 - 8594900 - Washington, DC 31 mi65 min SSW 7 G 11 78°F 85°F1019.1 hPa
CA2 - 8571892 - Cambridge, MD 32 mi65 min W 2.9 G 5.1
COVM2 - 8577018 - Cove Point LNG Pier, MD 37 mi65 min NNW 5.1 G 7 75°F 1018.8 hPa
SLIM2 - 8577330 - Solomons Island, MD 42 mi65 min NNW 4.1 G 6 76°F 85°F1018 hPa

Wind History for Francis Scott Key Bridge NE Tower, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Annapolis, United States Naval Academy, MD4 mi41 minWNW 510.00 miFair82°F71°F69%1018.5 hPa
Bay Bridge Field, MD7 mi55 minSW 810.00 miFair81°F68°F66%1018.3 hPa
Fort Meade / Tipton, MD20 mi53 minN 010.00 miPartly Cloudy72°F69°F94%1019 hPa
Baltimore, Baltimore-Washington International Airport, MD21 mi41 minSSW 710.00 miMostly Cloudy77°F70°F79%1017.6 hPa
Easton / Newman Field, MD22 mi50 minN 010.00 miPartly Cloudy75°F73°F94%1020 hPa
Camp Springs / Andrews Air Force Base, MD23 mi1.7 hrsWSW 710.00 miLight Rain Thunderstorm in Vicinity75°F70°F84%1018.4 hPa

Link to 5 minute data for KNAK

Wind History from NAK (wind in knots)
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Last 24hrCalmCalmW3NW5N5SW4CalmCalmW3CalmN43NE5E3SE4SE7SE5SE4E5SE1533CalmW5
1 day agoCalmW8CalmNW4W4CalmCalmCalmCalmS44N3NW5N4N3SE10SE10
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2 days agoCalmS3S3S3S3CalmCalmS4CalmS3SW4S5E5SE8SE9SE9SE12S11S13
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Tide / Current Tables for Bay Ridge, Maryland
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Bay Ridge
Click for Map
Tue -- 02:27 AM EDT     0.52 feet Low Tide
Tue -- 06:23 AM EDT     Sunrise
Tue -- 08:18 AM EDT     1.18 feet High Tide
Tue -- 10:57 AM EDT     Moonset
Tue -- 02:44 PM EDT     0.31 feet Low Tide
Tue -- 07:54 PM EDT     Sunset
Tue -- 09:07 PM EDT     1.20 feet High Tide
Tue -- 10:43 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.60.50.50.60.80.91.11.21.210.80.60.40.30.30.40.50.811.11.21.21

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Tue -- 12:28 AM EDT     -0.00 knots Slack
Tue -- 03:21 AM EDT     -0.62 knots Max Ebb
Tue -- 06:20 AM EDT     0.00 knots Slack
Tue -- 06:23 AM EDT     Sunrise
Tue -- 09:17 AM EDT     0.61 knots Max Flood
Tue -- 10:57 AM EDT     Moonset
Tue -- 12:11 PM EDT     -0.00 knots Slack
Tue -- 03:27 PM EDT     -0.75 knots Max Ebb
Tue -- 06:37 PM EDT     0.00 knots Slack
Tue -- 07:53 PM EDT     Sunset
Tue -- 09:53 PM EDT     0.79 knots Max Flood
Tue -- 10:43 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.2-0.2-0.5-0.6-0.6-0.4-0.10.20.50.60.60.40.1-0.3-0.6-0.7-0.7-0.5-0.20.10.50.70.80.7

Weather Map and Satellite Images
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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 Baltimore, MD/Washington (21,6,7,8)
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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.