Saturday, January23, 2021
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Marine Weather and Tides
Broomes Island, 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 7:18AMSunset 5:21PM Saturday January 23, 2021 1:16 PM EST (18:16 UTC) Moonrise 1:01PMMoonset 2:48AM Illumination 79% Phase: Waxing Gibbous; Moon at 10 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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ANZ542 Patuxent River To Broomes Island Md- 1242 Pm Est Sat Jan 23 2021
.small craft advisory in effect through Sunday morning...
This afternoon..NW winds 20 kt with gusts to 30 kt. Waves 2 ft.
Tonight..NW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
Sun..W winds 5 to 10 kt. Waves 1 ft.
Sun night..S winds 5 kt. Waves less than 1 ft.
Mon..E winds 5 kt. Waves less than 1 ft. Rain.
Mon night..E winds 5 kt. Waves less than 1 ft. Rain.
Tue..N winds 5 to 10 kt. Waves 1 ft. Rain, mainly in the morning.
Wed..NE winds 5 to 10 kt. Waves 1 ft. A chance of snow through the night.
ANZ500 1242 Pm Est Sat Jan 23 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure over the midwest will build eastward through the weekend. Low pressure will impact the region early next week. Small craft advisories will likely be needed for portions of the waters through the weekend. Small craft advisories may be needed Monday into Tuesday.


7 Day Forecast for Marine Location Near Broomes Island, MD
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location: 38.41, -76.55     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 231448 AAA AFDLWX

Area Forecast Discussion . UPDATED National Weather Service Baltimore MD/Washington DC 948 AM EST Sat Jan 23 2021

SYNOPSIS. Canadian high pressure will build overhead tonight into Sunday. The high will move offshore later Sunday and low pressure will approach Monday before passing through Monday night and Tuesday. High pressure may briefly return Wednesday, but another low may impact the area Thursday before high pressure returns for late next week.

NEAR TERM /THROUGH TONIGHT/.

Not much to add to the previous discussion. Based on 12Z IAD sounding and local TDWRs VWPs which show max gusts in the mixing layer around 30 kt canceled Gale Warning over the waters. Scattered flurries will continue for another hour or two, but are already showing signs of falling apart on LWX radar imagery. Dewpoints are very low in the teens and single digits and not all of the snowflakes may be reaching the ground at all.

Previous afd .

Canadian high pressure will approach the region today while low pressure remains over Nova Scotia. A gusty northwest wind ahead of the approaching high will allow for chilly conditions today with max temps ranging from the 20s in the mountains, to the 30s for most other locations, to the lower 40s in central Virginia. The gusty winds (frequent gusts around 25 to 35 mph for most areas) will make it even feel colder. Wind chills will range from the near or below zero along the ridge tops of the Allegheny Highlands, to teens and 20s for most other areas (perhaps a little warmer in central Virginia where the wind will not be quite as gusty). A sct/bkn stratocu deck across northern and central areas this morning will give way to more sunshine this afternoon as drier air advects in along with increasing subsidence.

The high will settle overhead tonight allowing for winds to diminish, but it will turn out cold with lows in the teens and 20s for most areas. High and mid-level clouds will increase ahead of an approaching jetmax from the west in the zonal flow aloft.

SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/. High pressure over our area will slide toward the coast Sunday and Sunday night while surface high pressure remains over New England. At the same time, low pressure will be developing over the Plains as a potent shortwave in the southern stream moves in from the west. This system should remain far enough to our west for much of the day to be dry. However, an upper-level disturbance (jetmax in the nearly zonal flow aloft) well ahead of this system will pass through late Sunday into Sunday evening. Warm advection well ahead of the low will begin to take place during this time, so there will be some moisture advection. Therefore, a period of light snow is possible with this system as it passes through. As of now, confidence is highest for snow to occur near and west of the Allegheny Highlands where there will be an upslope component to the low- level flow. Having that been said, it is not out of the question that some light snow makes it east of the mountains toward the metro areas. Added the slight chance for snow into northern VA/eastern WV during this time.

That system will move off to the east overnight Sunday while well to our west begins to track northeast into the central Plains. Mainly dry conditions are expected overnight Sunday with just a chance for light wintry precipitation near the Allegheny Highlands.

For Monday through Monday night: The low will track through the Midwest Monday and toward the southern Great Lakes and Ohio Valley Monday night. At the same time, high pressure will remain over New England enforcing low-level colder air in place. Warm and moist air from the Gulf of Mexico and Pacific will overrun the low-level colder air in place, and this combined with the shortwave energy and frontogenetical forcing at the mid-levels will cause precipitation to develop over our area. Precipitation is most likely to overspread from southwest to northeast Monday morning and afternoon, and continuing through Monday night.

With high pressure to our north that's associated with a Canadian airmass combined with low pressure tracking to our west, this provides a good setup for a wintry mix. Exact details are uncertain at this time, but as of now it appears that the best chance for wintry precipitation will be west of Interstate 95 from DC to Fredericksburg and north of US 50 in MD. It does appear that rain with perhaps a little sleet and mountain snow will overspread much of the area Monday, but from wetbulb cooling and even some cold advection at the low-levels, this will likely cause precipitation to change to a mix of freezing rain, sleet, and snow. Just a small change in temperature at the surface and aloft will have a significant impact on the forecast, so certainty in p-type is low at this time. However, as of now, it appears that the best chance for snow and sleet will be near the Mason-Dixon Line into eastern WV with some freezing rain across these areas. Perhaps there will be more freezing rain with a little snow/sleet across northern and central VA near/west of the Blue Ridge and also the farther northern/western suburbs of Washington DC. Rain will be the most likely precipitation type near and east of I-95 around DC, but again certainty is low at this time.

LONG TERM /TUESDAY THROUGH FRIDAY/. A surface low pressure system will lift off to the northwest of our region on Tuesday while the surface low that moved through our region on Monday pulls off the eastern seaboard. On the back end of the low to the east, some low level cold air may combine with a warm layer aloft to allow some linger precipitation to fall as wintry mix with focus as freezing rain. Precipitation that lingers into the afternoon periods of Tuesday should transition fully over to rain as temperatures warm up. A threat of precipitation will continue into early Wednesday as an upper level jet moves through the northern parts of Maryland. Precip Tuesday evening and into Wednesday morning will fall as snow as the thermal profile is all below freezing. Daytime temperatures on Tuesday should be warmer than Monday as warm air advection becomes stronger due to a warm front moving through the region. Cold air will move in behind a cold frontal passage late on Tuesday with overnight lows dropping down into the 20s and lower 30s.

A colder air mass moves into our region on Wednesday which will allow for some lingering snow showers over portions of northern and northeastern MD during the morning periods. High pressure will build over the eastern half of Canada Wednesday into Thursday morning. Daytime highs will be in the mid to upper 30s to lower 40 with overnight lows in the 20s.

Another system may bring further wintry precipitation to our region on Thursday. High pressure to the north will reinforce cold air into our region which will set the stage for a potential snow event Thursday afternoon and evening. There remains a lot of uncertain with this system as models aren't agree on the intensity and track of a surface low currently forecast to move to the south of our region. If the track shifts further north and the low becomes stronger, a decent snow storm will be possible for portions of our region.

Behind the surface low on Thursday, high pressure will build into our region Friday and into the early parts of next weekend. Current forecasts have seasonable temperatures both Friday and Saturday with mostly dry conditions.

AVIATION /15Z SATURDAY THROUGH WEDNESDAY/.

NW winds gusting around 25 to 30 knots are expected this afternoon before diminishing tonight. VFR conditions will continue through midday Sunday. There is a slight chance for a period of light snow late Sunday afternoon into Sunday evening. MVFR cigs will likely develop overnight Sunday into Monday morning.

Low pressure will bring rain and wintry precipitation to the terminals, especially later Monday and Monday night along with subVFR (and possibly subIFR) conditions. The best chance for snow/sleet/and freezing rain will be at KMRB, but it could affect the other terminals as well.

SubVFR ceilings and visibilities will be likely Tuesday morning and possible through early Wednesday due to wintry precipitation. Further restrictions will be possible on Thursday due to another potential winter system.

MARINE.

A SCA is in effect into this evening with gusts up to 30 knots most likely. Canceled Gale Warning based on observations, 12Z IAD sounding, and local TDWRs VWPs which show max winds around 30 kt.

Winds will gradually diminish tonight into Sunday, but an SCA is in effect for the Bay and lower Tidal Potomac River tonight through Sunday morning for northwest winds. High pressure will settle overhead or just to the east later Sunday into Sunday night. Low pressure will approach the waters Monday and Monday night. An SCA may be needed for portions of the waters during this time, especially Monday night.

Small Craft conditions will be possible on Tuesday and once again on Thursday.

LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . Small Craft Advisory until noon EST Sunday for ANZ530>534- 537>543. Small Craft Advisory until 6 PM EST this evening for ANZ535- 536.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SLIM2 - 8577330 - Solomons Island, MD 8 mi47 min NNW 15 G 21 31°F 42°F1023 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 9 mi191 min NW 25 G 35 31°F 1023.7 hPa
44062 - Gooses Reef, MD 12 mi23 min NW 18 G 19 32°F 41°F
PPTM2 - 8578240 - Piney Point, MD 19 mi47 min NW 24 G 30
BSLM2 - Chesapeake Bay, MD 27 mi47 min NW 9.9 32°F 1023 hPa6°F
NCDV2 27 mi47 min NW 13 G 19 33°F 41°F1023.4 hPa
44042 - Potomac, MD 28 mi23 min WNW 19 G 21 33°F 42°F1023.3 hPa
CA2 - 8571892 - Cambridge, MD 28 mi47 min NW 15 G 20 32°F 40°F1022.5 hPa
LWTV2 - 8635750 - Lewisetta, VA 29 mi47 min N 18 G 26 33°F 40°F1023.4 hPa
BISM2 - 8571421 - Bishops Head, MD 30 mi47 min NW 20 G 25 32°F 39°F1022.8 hPa
TPLM2 - Thomas Point, MD 34 mi77 min NW 20 G 22 30°F 40°F1023.8 hPa (+0.7)4°F
APAM2 - 8575512 - Annapolis, MD 40 mi47 min WNW 14 G 22 32°F 41°F1022.4 hPa
CPVM2 41 mi47 min 32°F 9°F
WASD2 - 8594900 - Washington, DC 41 mi47 min NW 12 G 18 33°F 40°F1024.3 hPa

Wind History for Solomons Island, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St Marys County Airport, MD7 mi22 minNNW 8 G 1910.00 miFair32°F5°F32%1023.4 hPa
Patuxent River, Naval Air Station, MD11 mi85 minNW 19 G 2510.00 miA Few Clouds and Breezy36°F12°F37%1023.2 hPa
St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity, MD19 mi24 minWNW 10 G 1710.00 miFair39°F13°F34%1022.7 hPa

Link to 5 minute data for K2W6

Wind History from 2W6 (wind in knots)
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Last 24hrW8NW5NE6NE3NW4NW4NW3CalmCalmW3CalmNW5NW3NW4NW4W3CalmNW4NW3NW12
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1 day agoSW8W6W8W5W3CalmSW4SW5SW5SW3W4SW3SW3SW3W4W5W4W4SW4SW3W6W6W5NW4
2 days agoNW9
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NW9W4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSE3CalmS4SW6SW7SW8W7

Tide / Current Tables for Broomes Island, Maryland
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Broomes Island
Click for Map
Sat -- 02:48 AM EST     Moonset
Sat -- 03:38 AM EST     -0.35 feet Low Tide
Sat -- 07:17 AM EST     Sunrise
Sat -- 10:38 AM EST     1.14 feet High Tide
Sat -- 01:00 PM EST     Moonrise
Sat -- 05:18 PM EST     Sunset
Sat -- 05:52 PM EST     0.15 feet Low Tide
Sat -- 10:06 PM EST     0.59 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20-0.2-0.3-0.3-0.200.40.711.11.11.10.90.70.50.30.20.20.20.40.50.60.5

Tide / Current Tables for Broomes Island, 0.4 mile south of, Maryland Current
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Broomes Island
Click for MapFlood direction 290 true
Ebb direction 110 true

Sat -- 01:37 AM EST     -0.33 knots Max Ebb
Sat -- 02:48 AM EST     Moonset
Sat -- 04:26 AM EST     0.00 knots Slack
Sat -- 07:17 AM EST     Sunrise
Sat -- 08:03 AM EST     0.49 knots Max Flood
Sat -- 11:58 AM EST     -0.00 knots Slack
Sat -- 01:00 PM EST     Moonrise
Sat -- 03:13 PM EST     -0.47 knots Max Ebb
Sat -- 05:18 PM EST     Sunset
Sat -- 07:05 PM EST     0.00 knots Slack
Sat -- 08:54 PM EST     0.14 knots Max Flood
Sat -- 11:16 PM EST     -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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-0.2-0.3-0.3-0.2-0.10.10.30.40.50.50.30.2-0-0.2-0.4-0.5-0.4-0.3-0.2-00.10.10.10

Weather Map
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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.
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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.