Sunday, January19, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Annapolis, MD

Version 3.4
NOTICE
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 7:20AMSunset 5:13PM Sunday January 19, 2020 6:50 PM EST (23:50 UTC) Moonrise 2:21AMMoonset 1:00PM Illumination 27% Phase: Waning Crescent; Moon at 24 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
ANZ532 Chesapeake Bay From Sandy Point To North Beach- 636 Pm Est Sun Jan 19 2020
.small craft advisory in effect through Monday afternoon...
Tonight..NW winds 15 to 20 kt with gusts to 25 kt. Waves 3 ft.
Mon..NW winds 15 to 20 kt with gusts to 25 kt. Waves 2 to 3 ft.
Mon night..N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Tue..N winds 10 to 15 kt. Waves 1 to 2 ft.
Tue night..N winds 5 to 10 kt. Waves 1 ft.
Wed..N winds 5 to 10 kt. Waves 1 ft.
Wed night..NE winds around 5 kt. Waves flat.
Thu..SW winds around 5 kt. Waves 1 ft or less.
Fri..E winds 5 to 10 kt. Waves 1 ft. A chance of rain through the night.
ANZ500 636 Pm Est Sun Jan 19 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build eastward from the northern plains during the first half of the week, then move offshore during the second half of the week. Small craft advisories may be needed for portions of the waters Monday night and Tuesday.


7 Day Forecast for Marine Location Near Annapolis, MD
   Hourly   EDIT   Help
location: 38.97, -76.49     debug


Area Discussion for - Baltimore, MD/Washington
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KLWX 192005 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 305 PM EST Sun Jan 19 2020

SYNOPSIS. An expansive area of high pressure will translate eastward from the northern Plains during the first half of the week, becoming centered overhead by Wednesday. High pressure will move offshore during the second half of the week, then low pressure will approach from the central United States for Saturday.

NEAR TERM /THROUGH MONDAY/. Latest surface analysis has a primary low pressure over Nova Scotia and a secondary low over southern Maine. From this secondary low, a trailing cold front extends southwest over the east coast south to Norfolk, then inland to western South Carolina. A trough axis also extends west from this low across the Great Lakes. Further west, broad high pressure extends north to south across the central US. Aloft, a broad trough dominates the eastern half of the country, with a shortwave dropping southeat across the Great Lakes and Midwest.

Through Monday, the shortwave and surface trough will be dropping southeastward across our region. However, the effects on our weather will be minimal, with the main impact being perhaps a reinforcing shot of colder air, though the difference appears marginal compared to what we will have before the trough reaches us. The system should generally be dry as well, with only a few upslope snow showers along the Allegany Front and perhaps a few flurries further east. The most significant impact would be winds, which will stay gusty through the day Monday. This will result in wind chills that fall to the teens tonight and perhaps only reach the 20s on Monday. In the higher terrain of eastern West Virginia, they may drop near wind chill advisory levels, but right now it doesn't look widespread enough to warrant an advisory. Otherwise, this cold would be nothing to write home about most winters, but this month has hardly been like most winters so far, with the current anomalies being 9-10 degrees above normal. So, it will feel relatively brutal even though its only a bit below normal. Lows tonight will fall into the 20s, with teens in the colder spots, while highs Monday will struggle to reach the 30s, with 20s in the colder spots.

SHORT TERM /MONDAY NIGHT THROUGH TUESDAY NIGHT/. High pressure will gradually build eastward Monday night through Tuesday night. This should allow winds to slowly diminish, though may also help radiational cooling at night. Thus, lows probably bottom out Monday night, then both highs and lows will moderate a bit Tuesday and Tuesday night. Otherwise, dry weather is expected as the high dominates, with partly to mostly clear skies.

LONG TERM /WEDNESDAY THROUGH SUNDAY/. High pressure remains in place Wednesday, moving directly overhead, which should allow temperatures to rise closer to average, with highs in the upper 30s to low 40s and lows in the 20s. High pressure then slides offshore by Thursday afternoon, with high temperatures rising into the mid 40s and lows in the mid to upper 20s.

A strong mid-upper trough will swing out of the northern Rockies on Friday, resulting in the formation of surface low pressure over the central Plains. Still a fair bit of uncertainty with regards to where this upper low tracks though. The Euro keeps it more closed off and tracking south, while the GFS brings it north through the Great Lakes. There will be many moving parts with this system that will need to be ironed out before any definitive forecast can be made. For now, going with rain chances beginning Friday night and continuing through Saturday. The climatologically favored northwestern areas stand the chance for some wintry precipitation with this system, but again, that will largely depend on the track, which is too uncertain at this point. For now, just something to watch.

AVIATION /20Z SUNDAY THROUGH FRIDAY/. Gusty NW winds with scattered to broken clouds around 4k ft will continue into early Monday, with gusts potentially reaching 30+ knots on occasion. Otherwise, VFR should predominate through the next few days, with winds diminishing Tuesday.

VFR conditions expected through Thursday as high pressure moves over the area Wednesday and offshore by Thursday afternoon. This will result in winds shifting throughout the day on Wednesday, but remaining light. Light winds out of the south to southwest on Thursday.

MARINE. Gusty NW winds will continue through Monday before potentially starting to relax significantly by Tuesday night as high pressure very gradually builds in. SCA up for most waters through late Monday, with some intermittent drop offs for the sheltered waters.

No marine hazards expected through Thursday.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . Small Craft Advisory until 6 PM EST Monday for ANZ530>534- 537>543. Small Craft Advisory until midnight EST tonight for ANZ535-536. Small Craft Advisory from 6 AM to noon EST Monday for ANZ535- 536.

SYNOPSIS . RCM NEAR TERM . RCM SHORT TERM . RCM LONG TERM . CJL AVIATION . RCM/CJL MARINE . RCM/CJL


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
APAM2 - 8575512 - Annapolis, MD 1 mi50 min 34°F 1016.5 hPa (+3.4)
TPLM2 - Thomas Point, MD 6 mi50 min W 22 G 26 35°F 42°F1017.5 hPa (+3.4)17°F
BSLM2 - Chesapeake Bay, MD 17 mi140 min NW 8.9 1015 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 17 mi50 min 33°F 1016.9 hPa (+3.8)
FSNM2 17 mi62 min 33°F 1016.4 hPa
BLTM2 - 8574680 - Baltimore, MD 21 mi50 min 33°F 42°F1016.7 hPa (+3.4)
TCBM2 - 8573364 - Tolchester Beach, MD 21 mi56 min 34°F 41°F1017 hPa
WASD2 - 8594900 - Washington, DC 29 mi50 min 34°F 44°F1018.1 hPa (+3.1)
CA2 - 8571892 - Cambridge, MD 35 mi56 min 37°F 43°F1015.3 hPa
SLIM2 - 8577330 - Solomons Island, MD 45 mi50 min 37°F 44°F1016.3 hPa (+3.8)

Wind History for Francis Scott Key Bridge NE Tower, MD
(wind in knots)    EDIT      (on/off)   Help
7
PM
8
PM
9
PM
10
PM
11
PM
-12
PM
1
AM
2
AM
3
AM
-12
PM
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
Last
24hr
S9
G16
S7
G15
SW7
G13
S8
G17
SW8
G21
SW4
G9
W16
W5
W6
W10
G13
W10
G14
W21
G29
NW30
NW28
W28
NW24
G29
NW24
G30
W28
W24
NW30
W23
NW18
G23
1 day
ago
N6
N6
N6
N4
NE6
NE3
N5
NE4
NE4
NE2
E4
E8
SE8
G13
SE7
G10
S9
G14
S7
G12
S8
G16
S8
G13
S7
G10
S3
G6
--
S3
S8
G13
S8
G14
2 days
ago
NW26
G38
NW28
G34
NW25
G31
NW29
G37
NW29
NW30
G39
NW18
G26
NW20
W19
G24
NW32
NW25
NW24
G30
NW23
N21
NW19
N14
G20
N15
NW13
G16
N9
G12
N11

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Annapolis, United States Naval Academy, MD1 mi56 minWNW 11 G 2210.00 miFair34°F18°F52%1017 hPa
Bay Bridge Field, MD8 mi65 minNW 15 G 2310.00 miMostly Cloudy34°F17°F51%1016.9 hPa
Fort Meade / Tipton, MD17 mi62 minWNW 9 G 2110.00 miPartly Cloudy32°F19°F60%1017.9 hPa
Baltimore, Baltimore-Washington International Airport, MD18 mi56 minWNW 18 G 2810.00 miA Few Clouds and Breezy32°F15°F50%1016.7 hPa
Baltimore, Inner Harbor, MD22 mi56 minno data mi33°F16°F49%1016.5 hPa
Camp Springs / Andrews Air Force Base, MD22 mi54 minWNW 11 G 1710.00 miMostly Cloudy33°F17°F55%1017.8 hPa
College Park Airport, MD23 mi62 minNW 9 G 1410.00 miPartly Cloudy32°F13°F46%1017.3 hPa

Link to 5 minute data for KNAK

Wind History from NAK (wind in knots)
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
2
PM
3
PM
4
PM
5
PM
6
PM
Last 24hrS9
G17
--S11
G19
S6SW9
G22
SW8
G18
6SW5NW7NW4W3NW3SW3NW66NW11
G23
NW12
G24
NW14
G21
NW21
G34
NW14
G26
NW17
G31
NW16
G29
NW10
G25
W11
G22
1 day agoN5N6W3N4N4NW3NW4N3E6E4E4E6SE10S8S7CalmS8
G17
S9
G16
S9SE11
G16
S5S7S8S7
2 days agoNW12
G31
NW10
G18
W10
G24
W10NW10NW13
G23
NW11
G19
NW11
G19
NW10
G22
NW8
G21
NW14
G22
NW15NW18
G28
N15N16
G32
NW14
G23
N12
G28
NW12
G19
N11N11N6N6N8N5

Tide / Current Tables for Annapolis, Maryland (2)
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Annapolis
Click for Map
Sun -- 02:21 AM EST     Moonrise
Sun -- 05:58 AM EST     -0.35 feet Low Tide
Sun -- 07:21 AM EST     Sunrise
Sun -- 12:45 PM EST     0.91 feet High Tide
Sun -- 12:59 PM EST     Moonset
Sun -- 05:11 PM EST     Sunset
Sun -- 07:38 PM EST     -0.02 feet Low Tide
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
0.60.50.30.1-0.1-0.3-0.4-0.3-0.10.20.50.70.90.90.80.70.50.30.10-00.10.20.4

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
   EDIT      (on/off)   Help   One Week of Data
Baltimore Harbor Approach
Click for Map
Sun -- 12:04 AM EST     0.41 knots Max Flood
Sun -- 02:21 AM EST     Moonrise
Sun -- 02:26 AM EST     -0.00 knots Slack
Sun -- 05:48 AM EST     -0.74 knots Max Ebb
Sun -- 07:21 AM EST     Sunrise
Sun -- 08:45 AM EST     0.00 knots Slack
Sun -- 12:29 PM EST     1.14 knots Max Flood
Sun -- 12:59 PM EST     Moonset
Sun -- 04:09 PM EST     -0.00 knots Slack
Sun -- 05:11 PM EST     Sunset
Sun -- 07:19 PM EST     -0.87 knots Max Ebb
Sun -- 10:59 PM EST     0.00 knots Slack
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
0.40.30.1-0.2-0.5-0.7-0.7-0.6-0.30.10.50.91.11.10.90.50.1-0.4-0.7-0.9-0.8-0.6-0.30

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
Wind Forecast for Baltimore, MD/Washington (18,4,5,8)
      (on/off)   Help

Ground Weather Radar Station Dover AFB, DE
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines 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.