Wednesday, September23, 2020
Privacy Policy
L-36.com

Marine Weather and Tides
Riviera Beach, 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 6:54AMSunset 7:02PM Wednesday September 23, 2020 2:06 PM EDT (18:06 UTC) Moonrise 1:06PMMoonset 10:36PM Illumination 39% 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
    EDIT      (on/off)   Help
ANZ538 Patapsco River Including Baltimore Harbor- 137 Pm Edt Wed Sep 23 2020
This afternoon..W winds 10 kt. Waves 1 ft.
Tonight..W winds 5 kt. Waves less than 1 ft.
Thu..S winds around 5 kt. Waves flat.
Thu night..SW winds 5 kt. Waves flat.
Fri..S winds around 5 kt. Waves 1 ft or less. A chance of showers.
Fri night..S winds 5 kt. Waves less than 1 ft. A chance of showers.
Sat..S winds around 5 kt. Waves 1 ft or less. A chance of showers in the morning. Patchy fog in the morning.
Sun..SW winds 5 to 10 kt. Waves 1 ft or less. A chance of showers.
ANZ500 137 Pm Edt Wed Sep 23 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will weaken and move south of the area through tonight, then move offshore Thursday into Friday. The remnants of beta will likely pass to the south while weakening Friday into Saturday. A couple cold fronts are expected to approach from the great lakes and ohio river valley late in the weekend into early next week. Small craft advisories may be needed for portions of the waters later Friday into Saturday.


7 Day Forecast for Marine Location Near Riviera Beach, MD
   Hourly   EDIT   Help
location: 39.16, -76.53     debug


Area Discussion for - Baltimore, MD/Washington
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KLWX 231344 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 944 AM EDT Wed Sep 23 2020

SYNOPSIS. High pressure will weaken and move south of the area through tonight, then move offshore Thursday into Friday. The remnants of Beta will likely pass to the south while weakening Friday into Saturday. A couple cold fronts are expected to approach from the Great Lakes and Ohio River Valley late in the weekend into early next week.

NEAR TERM /THROUGH TONIGHT/. High pressure centered over the southern Appalachian Mountains will will slide eastward into the western Atlantic Ocean by Thursday morning. Winds will be westerly and warm advection should prevail. Smoke aloft may reduce insolation, but the smoke is very thin (and thinning further). Warming should be adequate to allow temps to reach around 80 in much of the region. Lows tonight will remain mild, with 50s common.

SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/. High pressure will continue sliding east into the Atlantic Thursday. Temps will remain warm, but with a bit more cloud cover as Beta approaches, they may be a little lower than today. Lows Thursday night likely remain mild, with 50s common.

Things are looking a bit less pleasant for the end of the work week. While many models continue to keep the rain from Beta's remnants mostly south of the region, it is notable that the ECMWF has crept northward significantly, bringing steady rain across the CWA later Friday into Friday evening. Therefore, have added some chance pops up to the I-95 corridor Friday into Friday night, with slight chance pops further northwest. Highs Friday will depend greatly on how far north the rain gets, with a wetter solution likely being cooler than our forecast of upper 70s. Will continue to monitor.

LONG TERM /SATURDAY THROUGH TUESDAY/. By early Saturday, the remnants of of Beta will likely be moving offshore, as guidance seems to be trending a little bit earlier over the past few model runs. High pressure will located over the western Atlantic, leading to a southerly flow over the region at the low-levels. This will lead to a continued surge of moisture into the region, and continued shower chances. Will be lowering POPs on Saturday though, as the main feature will have moved offshore pretty early in the day. Highs on Saturday will reach the upper 70s to near 80, with dew points in the mid 60s. So, it will also feel a little more humid as well.

Sunday into early next week remains somewhat uncertain in regards to the exact timing of the next two weather features. There will be 2 cold front passages between Sunday and early Wednesday. The first looks to be late Sunday, as a shortwave passes by to our north through the Great Lakes and into the northeast. Still going to maintain the current forecast for POPs and thunder on Sunday, but do think that the best upper-level energy could be just to our north. Some guidance keeps us mostly dry in our forecast area, so still some uncertainty there. For Monday and Tuesday, a much stronger shortwave will move out of central Canada into the northern Plains and then over the Great Lakes by late Tuesday. This will drag a much stronger cold front through the area sometime late Tuesday. Between these two features, expect a lull in activity, so will likely come down a little on POPs for Monday afternoon and early Tuesday. Temps will gradually be on the decrease through Tuesday, with highs dropping into the low to mid 70s by Tuesday.

Cooler air will arrive in the wake of this frontal boundary by mid-late week, as a deep trough builds over the eastern CONUS.

AVIATION /15Z WEDNESDAY THROUGH SUNDAY/. VFR at all TAF terminals through Thursday night as high pressure lingers over the region, with winds shifting from westerly to southerly and then southeasterly. Sub-VFR possible Friday and Friday night as the remnants of Beta pass just to the south, possibly spreading rain northward into the region, with KCHO most susceptible to degradations.

Showers associated with the remnants of Beta will be moving offshore early Saturday, so VFR conditions should prevail for much of the day. A weak cold front then pushes through on Sunday, bringing a chance for showers, and perhaps an isolated thunderstorm. Still some uncertainty on precipitation potential with this front, but some restrictions are possible with the frontal passage late Sunday.

MARINE. High pressure pushing south of the waters should allow flow to relax through Thursday. Southerly to easterly flow may briefly intensify later Thursday into Friday as the remnants of Beta approach from the southwest. It remains unclear as to whether gusts may reach SCA criteria as Beta passes.

Could see some gusty winds early Saturday as Beta exits off the east coast, but looks to most likely stay below SCA criteria. This will continue throughout the day on Saturday and Sunday, as high pressure sits over the western Atlantic and a cold front approaches from the west on Sunday, leading to continued southerly flow.

TIDES/COASTAL FLOODING. Widespread anomalies of around 1 foot remain across the tidal waters at this time. This will bring many sites to action stage at least through today, with the most sensitive sites possibly reaching minor again on the late day high tide. The early high tide is the lower of the two astronomically, and is not expected to reach minor at any locale.

Anomalies may be slow to drop over the next few days as flow will weaken and a significant push of water out of the bay may be difficult to come by.

EQUIPMENT. The KLWX (Sterling, VA) WSR-88D remains out of service until further notice. The outage is due to a failure within the Radar Data Acquisition Functional Area that occurred early in the morning on September 20, 2020.

Technicians from the National Weather Service Radar Operations Center will arrive in Sterling on Saturday, September 26, to diagnose the failure. At that time, they will determine the full scope of the failure, and work with WFO Sterling electronics program staff in taking subsequent maintenance actions. Action and diagnosis includes repairing the gear box and assessing the health of the bull- gear.

Users of KLWX can utilize adjacent weather radars located in Dover DE (KDOX), Mt. Holly NJ (KDIX), Pittsburgh PA (KPBZ), Charleston WV (KRLX), Blacksburg VA (KFCX), and Wakefield VA (KAKQ).

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

SYNOPSIS . RCM/DHOF NEAR TERM . RCM/DHOF SHORT TERM . RCM LONG TERM . CJL AVIATION . RCM/DHOF/CJL MARINE . RCM/DHOF/CJL TIDES/COASTAL FLOODING . RCM EQUIPMENT . DHOF/JEL


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
FSNM2 4 mi49 min W 8 G 11 74°F 1014.7 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 4 mi49 min W 7 G 8 74°F 1014.8 hPa
BLTM2 - 8574680 - Baltimore, MD 8 mi49 min NW 5.1 G 8.9 75°F 75°F1014.4 hPa
APAM2 - 8575512 - Annapolis, MD 13 mi49 min W 6 G 11 76°F 70°F1014.8 hPa
CPVM2 14 mi49 min 75°F 54°F
TCBM2 - 8573364 - Tolchester Beach, MD 16 mi55 min WSW 7 G 9.9 71°F 68°F1015.3 hPa
TPLM2 - Thomas Point, MD 19 mi67 min W 9.9 G 11 71°F 70°F1016.6 hPa (-0.7)51°F
BSLM2 - Chesapeake Bay, MD 28 mi157 min WNW 6 1016 hPa
WASD2 - 8594900 - Washington, DC 33 mi49 min NNW 7 G 8 77°F 69°F1015.9 hPa
44062 - Gooses Reef, MD 42 mi25 min W 5.8 G 5.8 72°F 71°F
CHCM2 - 8573927 - Chesapeake City, MD 46 mi49 min 69°F
CA2 - 8571892 - Cambridge, MD 47 mi49 min WNW 8 G 13 71°F 68°F1015.6 hPa

Wind History for Francis Scott Key Bridge NE Tower, MD
(wind in knots)    EDIT      (on/off)   Help
2
PM
3
PM
4
PM
5
PM
-12
PM
-12
PM
-12
PM
9
PM
10
PM
-12
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
-12
PM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
Last
24hr
W13
G16
W11
G17
W12
G15
W16
W15
W11
W11
W13
W10
W11
W10
G13
W14
W12
G15
W8
G11
W12
W12
G15
W12
G15
W11
W13
G16
1 day
ago
NE8
G11
E5
E7
NE7
G10
E6
G9
E7
NE4
NE5
NE5
NW5
NW4
N2
NW6
N4
NW6
W6
NW7
NW3
NW6
NW6
N8
NW9
W9
2 days
ago
E10
G13
E13
NE15
G20
NE11
NE11
NE9
NE8
NE8
E12
NE8
NE8
NE10
NE11
N12
N14
N12
NE13
NE13
NE11
G14
NE13
G16
NE16
NE14
G18
NE9

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Baltimore, Baltimore-Washington International Airport, MD8 mi73 minWNW 1210.00 miFair77°F51°F40%1015.4 hPa
Annapolis, United States Naval Academy, MD13 mi73 minW 510.00 miFair75°F54°F48%1015.7 hPa
Baltimore / Martin, MD14 mi73 minW 810.00 miClear77°F51°F42%1015.6 hPa
Fort Meade / Tipton, MD14 mi72 minW 810.00 miFair73°F55°F53%1016.6 hPa
Bay Bridge Field, MD17 mi72 minW 710.00 miFair75°F53°F47%1015.6 hPa
College Park Airport, MD24 mi72 minWNW 510.00 miFair74°F47°F40%1015.9 hPa

Link to 5 minute data for KBWI

Wind History from BWI (wind in knots)
2
PM
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
Last 24hrW11
G17
W9
G15
W11W12W9W6W4W4W5W8W6W5W5W3W6W7W6W5W6W10W8W8W8NW12
1 day agoE65E6SE4SE5SE4CalmCalmCalmW3W3W4CalmCalmW3W4W3CalmW3NW4N4NW7W6NW8
2 days agoNE12
G19
E7
G16
E11E9E13E7NE5NE5NE7E6E4CalmCalmCalmW3NW3W3CalmW35E14E15
G18
NE13
G20
E10
G17

Tide / Current Tables for Fort Carroll, Maryland
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Fort Carroll
Click for Map
Wed -- 12:03 AM EDT     2.05 feet High Tide
Wed -- 06:55 AM EDT     Sunrise
Wed -- 07:35 AM EDT     0.65 feet Low Tide
Wed -- 11:59 AM EDT     1.27 feet High Tide
Wed -- 02:05 PM EDT     Moonrise
Wed -- 06:12 PM EDT     0.30 feet Low Tide
Wed -- 07:00 PM EDT     Sunset
Wed -- 09:56 PM EDT     First Quarter
Wed -- 11:36 PM EDT     Moonset
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
2.121.81.61.310.80.70.70.811.21.31.210.80.50.40.30.30.50.91.31.6

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
   EDIT      (on/off)   Help   One Week of Data
Baltimore Harbor Approach
Click for Map
Wed -- 01:34 AM EDT     -0.00 knots Slack
Wed -- 04:47 AM EDT     -0.96 knots Max Ebb
Wed -- 06:54 AM EDT     Sunrise
Wed -- 08:26 AM EDT     0.00 knots Slack
Wed -- 10:52 AM EDT     0.48 knots Max Flood
Wed -- 01:26 PM EDT     -0.00 knots Slack
Wed -- 02:04 PM EDT     Moonrise
Wed -- 04:30 PM EDT     -0.64 knots Max Ebb
Wed -- 07:00 PM EDT     Sunset
Wed -- 07:17 PM EDT     0.00 knots Slack
Wed -- 09:56 PM EDT     First Quarter
Wed -- 11:00 PM EDT     1.07 knots Max Flood
Wed -- 11:36 PM EDT     Moonset
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
0.70.3-0.2-0.6-0.9-1-0.8-0.5-0.20.20.40.50.40.1-0.2-0.4-0.6-0.6-0.4-0.10.30.711.1

Weather Map
       (on/off)   Help Weather Map
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
   (on/off)   Help
weather_mapweather_map weather_map


Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. Google supplies the ads on this site. Because I do not track who you are, I cannot customize how these ads are served. They may be personalized to improve the ad experience. If you do not want personalized ads, please adjust the settings on the Google site HERE.
. NOTE: The best I can determine, this site is not subject to CCPA but I am doing my best to comply anyway. 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 numerous 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.