Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
Edgewater, 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 6:23AMSunset 7:54PM Wednesday August 21, 2019 2:57 AM EDT (06:57 UTC) Moonrise 10:13PMMoonset 10:56AM Illumination 69% 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- 138 Am Edt Wed Aug 21 2019
.small craft advisory in effect from 9 am edt this morning through this evening...
Overnight..S winds 5 kt. Gusts up to 20 kt. Waves 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 138 Am Edt Wed Aug 21 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 today. A cold front will approach the waters late tonight into Thursday, before stalling 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 Edgewater, MD
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location: 38.95, -76.55     debug


Area Discussion for - Baltimore, MD/Washington
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Fxus61 klwx 210142
afdlwx
area forecast discussion
national weather service baltimore md washington dc
942 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
Shower and thunderstorm activity has diminished in the last
hours and some activity is still left over southern md into the
fredericksburg area. Isolated showers are also moving in from
the west and this may continue overnight, but not expecting much
from these. 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 02z Wednesday through Sunday
A few isolated showers are still possible overnight, but
overall dry. Patchy fog may 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
A few showers and storms are still lingering over the waters at
this time, some areas with special marine warnings, but
activity should diminish in the next hours. A light southerly
flow is expected 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 imr
short term... Mm
long term... Cjl
aviation... Mm imr cjl
marine... Mm imr cjl


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
APAM2 - 8575512 - Annapolis, MD 4 mi63 min 77°F 1015.7 hPa
TPLM2 - Thomas Point, MD 7 mi57 min SW 8 G 8.9 78°F 83°F1017.1 hPa (-0.7)73°F
CPVM2 9 mi63 min 80°F 74°F
BSLM2 - Chesapeake Bay, MD 14 mi147 min S 4.1 73°F 1017 hPa71°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 19 mi69 min WSW 2.9 G 5.1 75°F 1016.5 hPa
FSNM2 19 mi63 min SW 1 G 5.1 74°F 1016 hPa
BLTM2 - 8574680 - Baltimore, MD 22 mi63 min WSW 1.9 G 4.1 75°F 84°F1015.9 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 24 mi63 min SSW 11 G 14 80°F 86°F1016.2 hPa
WASD2 - 8594900 - Washington, DC 26 mi63 min W 1.9 G 7 75°F 85°F1016.9 hPa
44062 - Gooses Reef, MD 28 mi45 min SW 16 G 18 78°F 1017.1 hPa
CA2 - 8571892 - Cambridge, MD 36 mi63 min S 2.9 G 4.1 75°F 84°F1015.7 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 39 mi63 min SW 15 G 16 76°F 1017 hPa
SLIM2 - 8577330 - Solomons Island, MD 44 mi63 min SW 12 G 14 76°F 84°F1016.3 hPa

Wind History for Francis Scott Key Bridge NE Tower, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Meade / Tipton, MD15 mi4.6 hrsWNW 310.00 miFair70°F68°F94%1017.3 hPa
Camp Springs / Andrews Air Force Base, MD19 mi4 hrsSSW 810.00 miMostly Cloudy72°F67°F85%1017.7 hPa

Link to 5 minute data for KNAK

Wind History from NAK (wind in knots)
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Last 24hr------N5SW4--CalmW3CalmN43NE5E3SE4SE7SE5SE4E5--33CalmW5Calm
1 day agoW8--NW4--Calm----CalmS44N3NW5--N3SE10SE10
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2 days agoS3S3S3S3Calm--S4CalmS3SW4--E5SE8SE9SE9SE12S11S13
G19
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Tide / Current Tables for Edgewater, South River, Maryland
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Edgewater
Click for Map
Wed -- 03:15 AM EDT     0.67 feet Low Tide
Wed -- 06:24 AM EDT     Sunrise
Wed -- 08:55 AM EDT     1.22 feet High Tide
Wed -- 11:56 AM EDT     Moonset
Wed -- 03:08 PM EDT     0.34 feet Low Tide
Wed -- 07:53 PM EDT     Sunset
Wed -- 09:52 PM EDT     1.37 feet High Tide
Wed -- 11:12 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.80.70.70.70.80.91.11.21.21.210.80.60.40.30.40.50.711.21.31.41.3

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Wed -- 01:16 AM EDT     -0.00 knots Slack
Wed -- 04:12 AM EDT     -0.61 knots Max Ebb
Wed -- 06:24 AM EDT     Sunrise
Wed -- 07:20 AM EDT     0.00 knots Slack
Wed -- 10:05 AM EDT     0.50 knots Max Flood
Wed -- 11:55 AM EDT     Moonset
Wed -- 12:49 PM EDT     -0.00 knots Slack
Wed -- 04:06 PM EDT     -0.67 knots Max Ebb
Wed -- 07:11 PM EDT     0.00 knots Slack
Wed -- 07:52 PM EDT     Sunset
Wed -- 10:37 PM EDT     0.81 knots Max Flood
Wed -- 11:11 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.1-0.2-0.5-0.6-0.6-0.4-0.10.20.40.50.40.2-0.1-0.3-0.6-0.7-0.6-0.4-0.10.30.60.80.8

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 Baltimore, MD/Washington (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.