Monday, January20, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Severna Park, 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 5:14PM Monday January 20, 2020 12:29 PM EST (17:29 UTC) Moonrise 3:29AMMoonset 1:39PM Illumination 21% Phase: Waning Crescent; Moon at 25 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- 1155 Am Est Mon Jan 20 2020
.small craft advisory in effect until 6 pm est this evening...
This afternoon..N winds 15 kt with gusts to 20 kt. Waves 1 ft.
Tonight..N winds 10 kt. Waves 1 ft.
Tue..NW winds 10 kt. Waves 1 ft.
Tue night..NW winds 5 to 10 kt. Waves 1 ft.
Wed..N winds 5 kt. Waves flat.
Wed night..N winds around 5 kt. Waves flat.
Thu..Light winds. Waves flat.
Fri..E winds around 5 kt. Waves 1 ft or less. A chance of rain through the night.
ANZ500 1155 Am Est Mon Jan 20 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. A small craft advisory may be needed for portions of the waters Tuesday night.


7 Day Forecast for Marine Location Near Severna Park, MD
   Hourly   EDIT   Help
location: 39.07, -76.57     debug


Area Discussion for - Baltimore, MD/Washington
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KLWX 201501 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 1001 AM EST Mon Jan 20 2020

SYNOPSIS. A large area of high pressure will move from the northern Plains during the first half of the week, centered overhead by Wednesday. The high 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 TONIGHT/. Arctic surface high pressure 1044 mb over the northern plains will continue to expand east and dominate the weather across the eastern US through Thursday. Except for the far western upslope areas . conditions today will features breezy conditions and cold temperatures under sunny skies. Temperatures will average below seasonal normals today with mid 30s DC and lower 30s Baltimore areas.Wind chill readings this morning continue in the teens to lower 20s east of the Blue Ridge . with even single digit wind chills at times this morning at higher elevations west of the Blue Ridge. Northwest winds will continue gusty through this afternoon ranging from 20 to 30 mph. Upslope flurries will continue through around noontime but should taper off as moisture levels decrease through the afternoon there.

Tonight as the surface high build east, excellent radiational cooling will exist under clear skies although northwest winds will continue overnight helping to promote some mixing. Lack of snow cover other than along the western slopes will help keep temperatures from tanking too far..but a few single digits could occur in some of the sheltered valley locations across western areas.

Previous Short/Long term discussions follow .

SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/. Upper troughing will gradually lose its influence Tuesday and Wednesday, allowing the surface high to spread eastward. Ridging aloft will be overhead by Wednesday. Dry conditions are expected, and other than a batch or two of passing cirrus, skies should be mainly clear as well. Daytime highs will moderate a bit each day, with 40s becoming common again by Wednesday. Winds will become less of a factor as well. Lows will respond more slowly given favorable radiational cooling conditions continuing. Teens and 20s are expected both Tuesday and Wednesday nights.

LONG TERM /THURSDAY THROUGH SUNDAY/. High pressure will be in control on Thursday while mid to upper level trough deepens over the central CONUS, resulting in a mid- level cut-off low by Friday. At the surface, low pressure system will develop, but it is uncertain on location as deterministic and ensemble means develop it either over the Midwest or over the Tennessee Valley. This is followed by an ENE track that will increase the chances of precipitation over our region Friday night. The low pressure will then either move over us from the SW or will transfer its energy from the Great Lakes into a coastal low on Saturday. Either solution brings precipitation in form or rain or snow (mainly over higher elevations) between Friday night and Saturday night as the low deepens offshore. The low will move away from us Saturday night into Sunday with some lingering precipitation. Sunday night into Monday guidance suggests a shortwave trough could bring us some additional precipitation.

AVIATION /15Z MONDAY THROUGH FRIDAY/. VFR conditions expected through Friday. Gusty northwest winds will continue through mid afternoon, with peak gusts in the 20-25 kt range, then by late afternoon wind gust will diminish. Northwest winds tonight under clear skies.

MARINE. Small Craft Advisory conditions continue on all waters through noon. Gusty northwest winds continuing this afternoon. Blowout tides (-1 ft MLLW or lower) this morning for the northern Potomac and the upper reaches of the Chesapeake Bay. Wind gusts over the Upper Tidal Potomac are marginal for SCA conditions, but the middle/lower Potomac continue to quite gusty.

As the strong Arctic high pressure continues to build into the region, a tight pressure gradient across the Bay will result in continued gusty northerly winds tonight, with the advisory continuing for the wider waters south of Pooles Island, including the lower tidal Potomac. The high will be overhead by Wednesday, with light winds prevailing through Wednesday night.

Sub-SCA conditions expected Thursday into late Friday with high pressure in control.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . Small Craft Advisory until 10 AM EST Tuesday for ANZ531>534- 537-539>543. Small Craft Advisory until 6 PM EST this evening for ANZ530- 538. Small Craft Advisory until noon EST today for ANZ535-536.

SYNOPSIS . SMZ NEAR TERM . SMZ SHORT TERM . ADX LONG TERM . IMR AVIATION . ADS/SMZ MARINE . ADS/SMZ


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 8 mi59 min 30°F 1028 hPa
CPVM2 11 mi59 min 30°F
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 11 mi59 min NNW 14 G 18 29°F 1028.7 hPa
FSNM2 11 mi71 min NNW 16 G 19 28°F 1027.9 hPa
BLTM2 - 8574680 - Baltimore, MD 14 mi65 min N 12 G 16 29°F 41°F1028.4 hPa
TPLM2 - Thomas Point, MD 14 mi89 min NW 19 G 21 28°F 40°F1029 hPa (+1.7)9°F
TCBM2 - 8573364 - Tolchester Beach, MD 20 mi65 min N 14 G 17 29°F 40°F1029 hPa
BSLM2 - Chesapeake Bay, MD 21 mi119 min NNW 8 -24°F 1028 hPa
WASD2 - 8594900 - Washington, DC 28 mi59 min NNW 7 G 13 31°F 42°F1029.5 hPa
CA2 - 8571892 - Cambridge, MD 43 mi65 min NNW 12 G 19 30°F 40°F1027.9 hPa

Wind History for Francis Scott Key Bridge NE Tower, MD
(wind in knots)    EDIT      (on/off)   Help
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
-12
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
Last
24hr
NW24
G30
W28
W24
NW30
W23
NW18
G23
W27
G35
NW26
G32
W25
G33
W24
W23
W23
NW20
NW19
G24
NW19
G25
NW19
G24
NW15
G22
NW16
G24
NW16
NW15
NW18
NW17
G22
NW17
G21
1 day
ago
S7
G10
S3
G6
--
S3
S8
G13
S8
G14
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
2 days
ago
N15
NW13
G16
N9
G12
N11
N6
N6
N6
N4
NE6
NE3
N5
NE4
NE4
NE2
E4
E8
SE8
G13
SE7
G10
S9
G14
S7
G12
S8
G16
S8
G13

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, MD8 mi35 minN 14 G 2310.00 miFair31°F12°F45%1028.4 hPa
Baltimore, Baltimore-Washington International Airport, MD10 mi35 minNNW 11 G 1810.00 miA Few Clouds33°F7°F33%1028.4 hPa
Fort Meade / Tipton, MD11 mi41 minNNW 8 G 1410.00 miFair32°F12°F44%1029.5 hPa
Bay Bridge Field, MD14 mi44 minNNW 13 G 1710.00 miFair30°F10°F43%1028.4 hPa
Baltimore, Inner Harbor, MD15 mi35 minno data mi31°F7°F36%1028.5 hPa
Baltimore / Martin, MD20 mi35 minNW 8 G 1610.00 miClear32°F8°F37%1029.1 hPa
College Park Airport, MD20 mi41 minN 8 G 1410.00 miFair31°F4°F32%1028.8 hPa
Camp Springs / Andrews Air Force Base, MD23 mi93 minNNW 13 G 2010.00 miFair30°F9°F42%1029.5 hPa

Link to 5 minute data for KNAK

Wind History from NAK (wind in knots)
1
PM
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
Last 24hrNW21
G34
NW14
G26
NW17
G31
NW16
G29
NW10
G25
W11
G22
NW10
G21
NW12
G21
----------NW14
G23
NW11
G23
NW11
G19
NW14
G25
NW12NW13
G23
N14
G21
N13NW13
G21
NW12
G21
N14
G23
1 day agoS9SE11
G16
S5S7S8S7S9
G17
--S11
G19
S6SW9
G22
SW8
G18
6SW5NW7NW4W3NW3SW3NW66NW11
G23
NW12
G24
NW14
G21
2 days agoN11N11N6N6N8N5N5N6W3N4N4NW3NW4N3E6E4E4E6SE10S8S7CalmS8
G17
S9
G16

Tide / Current Tables for Brewer Point, Maryland
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Brewer Point
Click for Map
Mon -- 01:08 AM EST     0.46 feet High Tide
Mon -- 03:29 AM EST     Moonrise
Mon -- 07:21 AM EST     Sunrise
Mon -- 07:37 AM EST     -0.32 feet Low Tide
Mon -- 01:39 PM EST     Moonset
Mon -- 02:26 PM EST     0.85 feet High Tide
Mon -- 05:12 PM EST     Sunset
Mon -- 09:34 PM EST     -0.03 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
0.40.50.40.30.1-0.1-0.2-0.3-0.3-0.2-00.30.50.70.80.80.70.60.40.30.1-0-00.1

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
   EDIT      (on/off)   Help   One Week of Data
Baltimore Harbor Approach
Click for Map
Mon -- 01:12 AM EST     0.37 knots Max Flood
Mon -- 03:27 AM EST     -0.00 knots Slack
Mon -- 03:28 AM EST     Moonrise
Mon -- 06:45 AM EST     -0.69 knots Max Ebb
Mon -- 07:20 AM EST     Sunrise
Mon -- 09:35 AM EST     0.00 knots Slack
Mon -- 01:25 PM EST     1.19 knots Max Flood
Mon -- 01:38 PM EST     Moonset
Mon -- 05:05 PM EST     -0.00 knots Slack
Mon -- 05:12 PM EST     Sunset
Mon -- 08:19 PM EST     -0.95 knots Max Ebb
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
0.30.40.30.1-0.2-0.4-0.6-0.7-0.5-0.20.20.611.21.20.90.50-0.4-0.8-0.9-0.9-0.7-0.4

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 (12,3,4,5)
      (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.