Thursday, October1, 2020
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Marine Weather and Tides
Edgewater, MD

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:01AMSunset 6:49PM Thursday October 1, 2020 1:22 PM EDT (17:22 UTC) Moonrise 6:08PMMoonset 5:36AM Illumination 100% Phase: Full Moon; Moon at 14 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- 1036 Am Edt Thu Oct 1 2020
Rest of today..NW winds 5 kt. Waves less than 1 ft.
Tonight..N winds 5 to 10 kt. Waves 1 ft. Showers likely.
Fri..NW winds 5 to 10 kt. Waves 1 ft.
Fri night..NW winds 5 to 10 kt. Waves 1 ft.
Sat..NW winds 5 to 10 kt. Waves 1 ft.
Sat night..N winds 5 kt. Waves less than 1 ft.
Sun..E winds 5 kt. Waves less than 1 ft. A chance of showers through the night.
Mon..NW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
ANZ500 1036 Am Edt Thu Oct 1 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front will pass through late today through tonight. Canadian high pressure will build overhead for Friday and Saturday. Low pressure and its associated cold front will approach the waters Sunday before passing through Sunday night into Monday. A small craft advisory may be required overnight into Friday.


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 011423 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 1023 AM EDT Thu Oct 1 2020

SYNOPSIS. A cold front will pass through the area later this afternoon through tonight. Canadian high pressure will build overhead Friday through Saturday. Low pressure may impact the area late Sunday into Monday before high pressure returns for the middle of next week.

NEAR TERM /THROUGH TONIGHT/. Satellite imagery shows an upper level disturbance over southern Lake Michigan. This disturbance will dig to our west into the eastern Ohio Valley. The added lift from the disturbance will aid in the generation of light rain along and on the northwest side of the surface front which should push into the middle portion of our region. Most of the rain will occur along and east of the Blue Ridge. The rain will last through much of the overnight hours, before a reinforcing cold front finally passes through and clears things out. Highs this afternoon will be in the low to mid 70s, and lows tonight will be in the mid 40s to mid 50s.

SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/. The disturbance that will impact the area this afternoon will progress off to our northeast tomorrow, placing us within a zone of subsidence in its wake. Other than a lingering shower in northeastern Maryland around daybreak, conditions tomorrow are expected to remain dry. Mostly sunny skies are forecast, along with highs in the mid- upper 60s. Skies will stay mostly clear tomorrow night as high pressure starts to work toward the area from the Ohio Valley. The gradient may weaken enough for sheltered valleys in the West Virginia panhandle to go calm. If the higher elevation valleys do go calm, some patchy frost can't be ruled out. Elsewhere, lows should be in the low to mid 40s, with temperatures holding near 50 in the urban centers and along the bay.

Saturday will feature similar conditions to Friday as high pressure moves overhead. Skies will be mostly sunny, winds will stay light, and highs will be in the mid 60s. With high pressure overhead and clear skies, patchy frost may be possible once again Saturday night in the mountain valleys to the west. Lows will run below normal for early October, with low to mid 40s common, and around 50 degrees in DC, Baltimore, and along the bay.

LONG TERM /SUNDAY THROUGH WEDNESDAY/. A potent shortwave and jetmax associated with the northern stream of the jet is expected to drop into the Plains and Midwest for Sunday, before building east Sunday night into Monday. Sunday will most likely start off dry, but showers may overspread the portions of the area later in the afternoon. The best chance for showers will be Sunday afternoon northwest of Interstate 95, closer to the to the approaching shortwave and jetmax.

As this system digs, it will cause a broad upper-level trough over the area to become higher in amplitude while switching from a positive tilt toward a neutral or negative tilt. Latest guidance has trended toward a solution that holds off on the strengthening of the upper-level trough (positive to negative tilt) long enough so that the coastal low will develop farther off to the north and east, having less of an impact on our area. Having that been said, the trough axis will be associated with a potent shortwave and jetmax, and this combined with the cold front and primary low associated with it will likely be enough to trigger showers across portions of the area, especially northern portions that will be closer to the stronger forcing for Sunday night into Monday.

High pressure will build overhead behind this system for later Monday into Tuesday, before moving offshore during the middle portion of next week. Another cold front may impact the area later Wednesday or Wednesday night.

AVIATION /14Z THURSDAY THROUGH MONDAY/. VFR conditions are expected this afternoon through Saturday. The only impactful weather at the terminals over the next few days will be a period of light rain late this afternoon through much of the overnight hours. This rain will push out of the area by daybreak Friday, giving way to dry conditions for Friday and Saturday.

An upper-level disturbance and a cold front will approach Sunday before passing through Sunday night into Monday. High pressure will most likely return later Monday or Monday night. VFR conditions are expected most of the time, but subVFR conditions are possible in showers that develop late Sunday into early Monday.

MARINE. A northerly flow behind a reinforcing cold front later tonight will lead to small craft advisories late this evening and overnight. Sub- SCA winds are expected for both Friday and Saturday.

A cold front will approach Sunday and it will pass through the waters Monday as coastal low pressure develops offshore and tracks to the northeast. An SCA for northwest winds behind the boundary may be needed Monday into Monday night.

EQUIPMENT. The KLWX (Sterling, VA) WSR-88D outage, which began on September 20, 2020, will continue and remain out of service until on or about October 16, 2020.

On Saturday, technicians from the NWS Radar Operations Center (ROC), based in Norman, Oklahoma, determined that a primary component for turning the radar antenna, the bull-gear, needs replacement. This repair will require 12,000 to 15,000 pounds of equipment and a six-person team from the ROC to restore the radar. At this time, the team anticipates repairs being completed on or about October 16, 2020.

During the downtime, adjacent supporting NWS radars include: Dover DE (KDOX), Mt. Holly NJ (KDIX), Pittsburgh PA (KPBZ), Charleston WV (KRLX), Blacksburg VA (KFCX), and Wakefield VA (KAKQ).

For a radar mosaic loop for the region:

https:/radar.weather.gov/ridge/Conus/northeast.php

Further updates about the situation will be issued as information becomes available. Thank you for your understanding during this extended outage.

Point of Contact:

Christopher Strong email: Christopher.Strong@noaa.gov office: 703-996-2223

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . None.

SYNOPSIS . BJL NEAR TERM . KLW/KJP SHORT TERM . KJP LONG TERM . BJL AVIATION . BJL/KLW MARINE . BJL/KLW EQUIPMENT . BJL


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
APAM2 - 8575512 - Annapolis, MD 4 mi53 min NW 7 G 8.9 70°F 71°F1013.4 hPa
TPLM2 - Thomas Point, MD 7 mi23 min WNW 6 G 8 70°F 71°F1014.6 hPa (+0.0)52°F
CPVM2 9 mi53 min 69°F 56°F
BSLM2 - Chesapeake Bay, MD 14 mi113 min NW 2.9 1013 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 19 mi53 min NW 7 G 8.9 69°F 1013.9 hPa
FSNM2 19 mi53 min NW 8.9 G 13 68°F 1013.8 hPa
BLTM2 - 8574680 - Baltimore, MD 22 mi53 min N 7 G 11 69°F 73°F1013.4 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 24 mi53 min N 5.1 G 5.1 67°F 69°F1014.2 hPa
WASD2 - 8594900 - Washington, DC 26 mi53 min NW 5.1 G 8 74°F 70°F1014.1 hPa
44062 - Gooses Reef, MD 28 mi35 min E 3.9 G 5.8 67°F 72°F
CA2 - 8571892 - Cambridge, MD 36 mi53 min WNW 6 G 7 70°F 70°F1013.8 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 39 mi53 min ENE 4.1 G 4.1 1014.3 hPa
SLIM2 - 8577330 - Solomons Island, MD 44 mi53 min W 1 G 5.1 72°F 71°F1013.6 hPa

Wind History for Francis Scott Key Bridge, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Annapolis, United States Naval Academy, MD4 mi29 minNNW 710.00 miFair71°F55°F59%1013.9 hPa
Bay Bridge Field, MD12 mi28 minN 510.00 miFair72°F57°F61%1013.9 hPa
Fort Meade / Tipton, MD15 mi28 minN 010.00 miFair68°F55°F64%1014.9 hPa
Baltimore, Baltimore-Washington International Airport, MD18 mi29 minNW 910.00 miMostly Cloudy72°F51°F48%1013.8 hPa
Camp Springs / Andrews Air Force Base, MD19 mi27 minNW 710.00 miPartly Cloudy73°F52°F48%1014.1 hPa
College Park Airport, MD20 mi28 minWNW 310.00 miFair71°F49°F46%1013.9 hPa

Link to 5 minute data for KNAK

Wind History from NAK (wind in knots)
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Last 24hrW7W7SW6
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S4S4S5S5S5S43S33W6W5CalmCalmNW54W7NW7NW8NW7
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Tide / Current Tables for Edgewater, South River, Maryland
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Edgewater
Click for Map
Thu -- 05:07 AM EDT     1.33 feet High Tide
Thu -- 06:35 AM EDT     Moonset
Thu -- 07:02 AM EDT     Sunrise
Thu -- 11:28 AM EDT     0.40 feet Low Tide
Thu -- 05:06 PM EDT     Full Moon
Thu -- 05:29 PM EDT     1.29 feet High Tide
Thu -- 06:48 PM EDT     Sunset
Thu -- 07:08 PM EDT     Moonrise
Thu -- 11:41 PM EDT     0.45 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.60.91.11.31.31.31.10.90.70.50.40.40.50.711.21.31.31.210.80.60.5

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Thu -- 02:39 AM EDT     0.00 knots Slack
Thu -- 05:41 AM EDT     0.79 knots Max Flood
Thu -- 06:35 AM EDT     Moonset
Thu -- 07:01 AM EDT     Sunrise
Thu -- 08:41 AM EDT     -0.00 knots Slack
Thu -- 11:48 AM EDT     -0.84 knots Max Ebb
Thu -- 02:52 PM EDT     0.00 knots Slack
Thu -- 05:06 PM EDT     Full Moon
Thu -- 06:03 PM EDT     0.90 knots Max Flood
Thu -- 06:47 PM EDT     Sunset
Thu -- 07:07 PM EDT     Moonrise
Thu -- 09:14 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.8-0.6-0.30.10.50.70.80.60.3-0.1-0.5-0.8-0.8-0.7-0.40.10.50.80.90.80.50.1-0.3-0.7

Weather Map
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wmap_A
GEOS 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
Ground Weather Radar Station Dover AFB, DE
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