Wednesday, December11, 2019
Privacy Policy
L-36.com


Marine Weather and Tides
Prince Frederick, MD

Version 3.4
NOTICE
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.
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 7:13AMSunset 4:48PM Wednesday December 11, 2019 3:37 PM EST (20:37 UTC) Moonrise 4:34PMMoonset 6:26AM Illumination 100% Phase: Full Moon; Moon at 15 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
ANZ533 Chesapeake Bay From North Beach To Drum Point- 1237 Pm Est Wed Dec 11 2019
.small craft advisory in effect until midnight est tonight...
This afternoon..NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
Tonight..NW winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Thu..E winds 5 to 10 kt. Waves 1 ft.
Thu night..E winds 5 kt. Waves flat.
Fri..NE winds 5 kt. Waves flat. Rain likely.
Fri night..E winds 5 to 10 kt. Waves 1 ft or less. Rain.
Sat..W winds 10 to 15 kt. Waves 1 ft. Showers likely through the day, then a chance of showers through the night.
Sun..NW winds 10 to 15 kt. Waves 1 to 2 ft.
ANZ500 1237 Pm Est Wed Dec 11 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build across the region today through Thursday. Low pressure system developing over the northern gulf of mexico will move northeastward toward the region Friday into Saturday. Small craft advisories may be needed Saturday through Sunday morning


7 Day Forecast for Marine Location Near Prince Frederick, MD
   Hourly   EDIT   Help
location: 38.59, -76.49     debug


Area Discussion for - Baltimore, MD/Washington
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS61 KLWX 111944 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 244 PM EST Wed Dec 11 2019

SYNOPSIS. A strong area of high pressure, originating from Canada, will build to our north today through Thursday night. Meanwhile, an area of low pressure will develop over the Gulf of Mexico Friday and track north, across the eastern United States, as high pressure departs offshore. Low pressure will then move across the area Saturday, with another area of low pressure approaching Monday into Tuesday.

NEAR TERM /THROUGH THURSDAY/. Strong high pressure will continue to build across the region this afternoon through Thursday. With the high originating from Canada, the air mass is quite chilly, but not excessively or unusually cold for this time of year, with temperatures generally 10 degrees below normal or so. Low temperatures overnight will dip down into the low to mid 20s, with the normal colder spots potentially getting into the teens.

With high pressure set up north of the region tomorrow, temperatures will even be a little colder than today, with highs in the mid to upper 30s. No precipitation to speak of though, and winds will be light, so even wind chills won't be an issue. So just a dry, chilly day across the area.

SHORT TERM /THURSDAY NIGHT THROUGH FRIDAY NIGHT/. High pressure will slide offshore Thursday night, as low pressure develops along the Gulf Coast and heads north toward the region. A wedge of cold air will remain through much of Friday morning, especially in the valleys west of the Blue Ridge. This could create some problems with freezing rain at the onset of the event Friday morning, when warm advection precipitation is likely to begin across the area. The most significant risk of freezing rain appears to be along the I-81 and I-64 corridors, where the precipitation arrives earlier and the cold air lingers the longest. Farther north and east of these areas, thinking that surface temperatures should warm just quick enough to avoid any major issues, but certainly can't rule out some light accumulations north and east of I-64. Right now, generally thinking this will be a light event, with less than a tenth of an inch along the I-81 and I-64 corridors, and perhaps a couple hundredths farther north and east, if conditions line up just right.

Outside of the freezing rain threat comes a soaking rain event starting Friday night, continuing into Saturday morning, as low pressure moves over the area. Periods of moderate rain can be expected overnight Friday. Additionally, some guidance indicates there could be some cold air still in place in western MD, where cold air climatologically hangs around longer, so can't rule out some freezing rain in the valleys in that area Friday evening/night.

LONG TERM /SATURDAY THROUGH TUESDAY/. Low pressure overhead Saturday will move off to the north later Saturday morning and afternoon. A soaking rain will be around to start, but a dry slot will work its way into the area during this time, and this may cause a lull in the precipitation. Confidence in timing the lull of precipitation remains low at this time. A second round of precipitation will be possible Saturday evening into early Sunday morning due to forcing by the upper level low passing over our area and the surface low's associated cold front. Some upslope wintry precipitation can be ruled out over and along the higher elevations.

High pressure will build back into our region Sunday through early Monday morning. Clear skies along with cooler temperatures in the mid 40s during the day and the 20s and 30s overnight. A warm front is forecast to lift through our region Monday morning. Overruning precipitation will be possible as this frontal boundary moves through our region. As high pressure is in place over the Northeast US, models have been hinting at a cold air damming situation. As the warm front lifts through our area, this precipitation could potentially fall as wintry precipitation. We will need to continue to track the model trend. Models have the damming setup breaking early Tuesday as the main cold front moves through our area. A brief warm up into the 40s will lead to rain Tuesday afternoon. It looks like the cold front is forecast to fully move through our area by Tuesday evening with cooler temps building back into our area Tuesday overnight into Wednesday.

AVIATION /18Z WEDNESDAY THROUGH MONDAY/. VFR conditions expected this afternoon, with some gusty WNW winds at 15-20 knots. This will taper off over the next few hours though, and should be light overnight out of the WNW. Light winds and VFR then expected tonight through Thursday evening.

A low pressure system will track near our area. Rain will likely cause SubVFR restrictions on Saturday. Rain should dissipate late Saturday into early Sunday. Some showers can't be ruled out with brief restrictions on Sunday but VFR conditions expected on Sunday at this time.

MARINE. Gusty winds remain across portions of the waters this afternoon, with another uptick in winds expected this evening into tonight. Small Craft Advisory remains in effect for much of the Bay and the lower Tidal Potomac. Winds will gradually subside overnight, so will keep with the previous Small Craft Advisory for the central Bay and lower Tidal Potomac into Thursday morning. Confidence a little lower in how long the winds linger, but will keep it as is for this forecast cycle.

As coastal low passes near our area, winds will likely reach Small Craft Advisory levels Saturday and Sunday. Small Craft Advisories will likely be needed this weekend.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . Small Craft Advisory until midnight EST tonight for ANZ531>533- 538>541. Small Craft Advisory until noon EST Thursday for ANZ534-537- 543.

SYNOPSIS . CJL NEAR TERM . CJL SHORT TERM . CJL LONG TERM . BJL/JMG AVIATION . CJL/JMG MARINE . CJL/JMG


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
44062 - Gooses Reef, MD 5 mi55 min N 14 G 16 39°F 1029 hPa
BSLM2 - Chesapeake Bay, MD 18 mi127 min NW 8 39°F 1027 hPa16°F
SLIM2 - 8577330 - Solomons Island, MD 19 mi49 min WNW 7 G 14 40°F 48°F1028.2 hPa
TPLM2 - Thomas Point, MD 22 mi37 min W 17 G 19 38°F 46°F1029.1 hPa (-0.0)13°F
CA2 - 8571892 - Cambridge, MD 22 mi49 min W 8.9 G 14 39°F 45°F1028.2 hPa
44063 - Annapolis 26 mi31 min WNW 12 G 14 39°F 46°F1028.8 hPa
APAM2 - 8575512 - Annapolis, MD 27 mi49 min 39°F 1027.5 hPa
CPVM2 29 mi49 min 41°F
PPTM2 - 8578240 - Piney Point, MD 32 mi49 min NW 11 G 15
WASD2 - 8594900 - Washington, DC 34 mi49 min W 7 G 8.9 40°F 44°F1028.7 hPa
NCDV2 34 mi55 min WNW 2.9 G 6 41°F 49°F1027.9 hPa
BISM2 - 8571421 - Bishops Head, MD 35 mi55 min NW 16 G 19 39°F 46°F1028.7 hPa
44042 - Potomac, MD 39 mi43 min 46°F 47°F
LWTV2 - 8635750 - Lewisetta, VA 41 mi55 min NNW 8.9 G 13 39°F 46°F1028.5 hPa
FSNM2 44 mi61 min W 14 G 16 37°F 1027.1 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 44 mi49 min W 11 G 14 38°F 1027.9 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 45 mi49 min W 11 G 16 38°F 47°F1028 hPa
BLTM2 - 8574680 - Baltimore, MD 47 mi49 min NW 7 G 13 39°F 46°F1027.5 hPa

Wind History for Cove Point LNG Pier, MD
(wind in knots)    EDIT      (on/off)   Help
Last
24hr
1 day
ago
2 days
ago

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St Marys County Airport, MD19 mi62 minW 6 miFair37°F19°F48%1028.8 hPa
Patuxent River, Naval Air Station, MD21 mi1.8 hrsNW 1210.00 miPartly Cloudy40°F21°F49%1028 hPa

Link to 5 minute data for K2W6

Wind History from 2W6 (wind in knots)
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
-12
PM
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
Last 24hrW4CalmNW3W4NW7NW3CalmNW7N7NW5NW6N6N5CalmNW3CalmNW4NW5NW7W8NW8
G17
NW4W6W5
1 day agoS4S5SW6SW8SW9
G17
SW11
G16
SW10
G18
SW14
G24
SW13
G18
SW8
G14
SW12
G21
SW11
G20
SW9
G15
SW10
G15
SW10
G14
SW8
G14
S6
G14
SW10
G17
SW12SW9
G15
SW6SW7
G16
W8SW6
2 days agoE4CalmCalmE3CalmCalmCalmCalmCalmCalmCalmE3CalmCalmW4SW3CalmS3SW6SW4SW4SW4SE4SW3

Tide / Current Tables for Plum Point, Maryland
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Plum Point
Click for Map
Wed -- 01:50 AM EST     0.62 feet High Tide
Wed -- 06:27 AM EST     Moonset
Wed -- 07:13 AM EST     Sunrise
Wed -- 07:50 AM EST     -0.19 feet Low Tide
Wed -- 02:42 PM EST     1.16 feet High Tide
Wed -- 04:34 PM EST     Moonrise
Wed -- 04:44 PM EST     Sunset
Wed -- 09:53 PM EST     0.09 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
0.50.60.60.50.40.2-0-0.1-0.2-0.10.10.40.711.11.21.10.90.70.50.30.10.10.2

Tide / Current Tables for Broomes Island, 0.4 mile south of, Maryland Current
   EDIT      (on/off)   Help   One Week of Data
Broomes Island
Click for MapFlood direction 290 true
Ebb direction 110 true

Wed -- 02:09 AM EST     -0.00 knots Slack
Wed -- 05:05 AM EST     -0.35 knots Max Ebb
Wed -- 06:26 AM EST     Moonset
Wed -- 07:13 AM EST     Sunrise
Wed -- 07:40 AM EST     0.00 knots Slack
Wed -- 11:16 AM EST     0.59 knots Max Flood
Wed -- 03:02 PM EST     -0.00 knots Slack
Wed -- 04:34 PM EST     Moonrise
Wed -- 04:45 PM EST     Sunset
Wed -- 06:23 PM EST     -0.64 knots Max Ebb
Wed -- 10:15 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
0.20.10-0.1-0.3-0.3-0.3-0.10.10.30.50.60.60.40.20-0.3-0.5-0.6-0.6-0.5-0.3-0.10.1

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
Wind Forecast for Baltimore, MD/Washington (15,3,4,5)
      (on/off)   Help

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

Ad by Google

Cookie Policy:
This webiste uses cookies to save your settings. No personal information is saved. 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. I do not keep site logs longer than I need to to keep bad actors off the site. Basically, I delete them after looking at them. 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 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.