Monday, July26, 2021
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Marine Weather and Tides
Baltimore Highlands, MD

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:00AMSunset 8:25PM Monday July 26, 2021 8:13 PM EDT (00:13 UTC) Moonrise 9:30PMMoonset 7:36AM Illumination 93% Phase: Waning Gibbous; Moon at 17 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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ANZ538 Patapsco River Including Baltimore Harbor- 737 Pm Edt Mon Jul 26 2021
Tonight..SW winds 5 kt. Waves flat. A slight chance of tstms. A chance of showers, mainly this evening.
Tue..E winds 5 kt. Waves flat.
Tue night..SW winds 5 kt. Waves flat.
Wed..NE winds 5 kt. Waves flat. A chance of showers and tstms.
Wed night..SE winds 5 kt. Waves less than 1 ft.
Thu..S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Thu night..W winds 5 kt. Waves less than 1 ft. A chance of showers and tstms.
Fri..N winds 5 to 10 kt. Waves 1 ft. A chance of showers in the morning.
Sat..NW winds 5 to 10 kt...becoming sw. Waves 1 ft or less. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 737 Pm Edt Mon Jul 26 2021
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front will push south across the area today, stalling out over the carolinas through Tuesday night as weak high pressure builds back into the region. A weak front will drop across the waters Wednesday before a more potent cold front sweeps through the area Thursday into Friday. Small craft advisories may be required for portions of the waters Thursday through Friday.


7 Day Forecast for Marine Location Near Baltimore Highlands, MD
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location: 39.26, -76.6     debug


Area Discussion for - Baltimore, MD/Washington
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FXUS61 KLWX 261839 AFDLWX

Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 239 PM EDT Mon Jul 26 2021

SYNOPSIS.

A weak cold front will stall out over central Virginia into southern Maryland through Tuesday. Another weak cold front will approach from the north Wednesday while an upper-level disturbance passes through. A stronger cold front will pass through late Thursday into early Friday and high pressure will build overhead for Saturday before moving offshore Sunday.

NEAR TERM /THROUGH TONIGHT/.

A cold front has dropped south through our region from PA this afternoon and is currently located over parts central Virginia. Storms and showers have formed along and south of the front this afternoon with a one storm having already becoming severe. The Storm Prediction Center has issued SVR watch 392 for large portions of southern and central Virginia including Nelson and Albemarle counties from our forecast area. A combination of warm and humid conditions along and ahead of the front combined with modest CAPE will lead a threat for large hail and damaging winds. The main threat for strong to severe storms will be areas along and south of I-64 but I can't rule out a few stronger storms from forming north of the front this evening. Showers and thunderstorms will continue to be a threat this evening and coverage should start to lesson later this evening. Some CAM's indicate that showers and storms could reform further north over the DC metro this evening but confidence remains low on this threat especially with a northwesterly flow. PW's will be close to 2 inches ahead of the front that Flash Flooding will be a concern especially down in parts of Nelson and Augusta counties that have receive precipitation the past few nights.

As the front progresses further north later this evening, the threat for strong storms and flash flooding will start to diminish as drier air slowly builds our region. Skies will become mostly clear overnight with winds becoming light out of the south. Fog will likely be a concern for areas down in central Virginia where precipitation will occur this afternoon. Overnight lows will be near to slight above normal in the 60s to lower 70s.

SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/.

High pressure will briefly build into our region on Tuesday with light winds continuing out of the north. An upper trough north of the Great Lakes is expected to drop south into PA. Shortwave energy along the southern parts of the trough may produce some isolated showers on Tuesday. I believe the threat remains relatively for showers on Tuesday especially with a continued northwesterly flow aloft advecting in drier air into the region. The combination of mostly clear skies along with a light flow will allow temps to rise up into the low to mid 90s on Tuesday. Typically as we get temps up into the mid 90s, the heat indices will become an issue but the lack of moisture advection will limit heat indexes to the 90s.

An upper level ridge will build over the central US Tuesday through Wednesday with a trough axis over the NE US. The positioning of the upper ridge will place our region in favorable location to allow for shortwaves to move over the ridge and drop down into our region. These shortwaves combined with a front approaching from the north may allow for showers and thunderstorms to form over the northern half of our CWA especially considering that temps will be hovering in the 90s. The main limiting factor for storm development will be the lack of good moisture in place on Wednesday. Afternoon temps be warm once again in the low to mid 90s. A marginal risk for SVR weather has been issued by SPC for areas along the MD/PA border for Wednesday due to the combination of shortwaves and a front slowly approaching from the north.

LONG TERM /THURSDAY THROUGH MONDAY/.

An upper-level trough will strengthen over New England Thursday and Friday while the trough axis extends down through the Mid-Atlantic. A potent upper-level disturbance and jetmax associated with the trough will dig into New England during this time, and this will allow for a stronger cold front to approach Thursday before passing through Thursday night into Friday.

There will be some return flow ahead of the frontal passage which will allow for instability to develop. At the same time, moderate shear profiles are expected due to stronger northwest winds aloft associated with the upper-level trough and lower heights. Steep low- level lapse rates, increasing instability, stronger shear and forcing from the cold front suggests that thunderstorms are possible, and some storms may be severe. The best chance for severe appears to be Thursday afternoon and evening, but timing could shift depending on exactly when the cold front passes through.

The cold front will continue to push to the south for Friday into Friday night. However, the boundary could get hung up across our extreme southern zones for a period Friday, so a shower or thunderstorm is possible across those areas, but for most areas it will turn out less humid and dry.

High pressure will build overhead Friday night and Saturday, bringing dry and cooler conditions along with lower humidity. The high will move offshore for Sunday and warmer air will return.

AVIATION /19Z MONDAY THROUGH SATURDAY/.

Showers and thunderstorms will mainly impact the CHO terminal this afternoon and evening causing possible MVFR to IFR restrictions. Storms will have the potential to produce gusty winds and large hail through this evening for CHO terminal. Showers or thunderstorms can't be ruled out for the DC metro terminals this evening but confidence remains low. VFR conditions should return Tuesday and Wednesday for all terminals but fog will be possible for the CHO terminal late this evening and into Tuesday morning.

A cold front will pass through late Thursday into early Friday. A few thunderstorms are possible ahead of the boundary, especially Thursday afternoon and evening. Some storms may become severe, with damaging winds being the primary threat.

The boundary will push to the south for Friday, but it may get hung up close to KCHO. An isolated storm near KCHO is possible, but other areas should be dry with northwest winds.

MARINE.

Small Craft Advisories are not expected through Wednesday but showers and thunderstorms may impact our southern bay waters this evening.

A cold front will approach the waters Thursday before passing through Thursday night into Friday. Winds may approach SCA criteria ahead of the front late Thursday into Thursday night (from southerly winds), and again behind the front late Thursday night and Friday (from northwest winds).

A few thunderstorms are possible Thursday afternoon and evening, and some may produce gusty winds. An isolated t-storm near the extreme southern portion of the waters around Tangier Island cannot be completely ruled out Friday afternoon, but most places will be dry.

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

SYNOPSIS . BJL NEAR TERM . JMG SHORT TERM . JMG LONG TERM . BJL AVIATION . BJL/JMG MARINE . BJL/JMG TIDES/COASTAL FLOODING .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BLTM2 - 8574680 - Baltimore, MD 1 mi55 min SSW 2.9 G 6 80°F 83°F1012.6 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 5 mi55 min S 8 G 8.9 81°F 1012.7 hPa
FSNM2 5 mi55 min S 5.1 G 7 82°F 1013.1 hPa
TCBM2 - 8573364 - Tolchester Beach, MD 19 mi61 min E 1.9 G 5.1 86°F 83°F1012.7 hPa
APAM2 - 8575512 - Annapolis, MD 20 mi55 min SE 1.9 G 4.1 86°F 84°F1012.4 hPa
CPVM2 21 mi55 min 82°F 74°F
44063 - Annapolis 22 mi43 min NW 1.9 G 1.9 82°F 83°F1 ft1014 hPa
TPLM2 - Thomas Point, MD 26 mi73 min SSE 7 G 8 83°F 80°F1013.2 hPa (-0.6)68°F
BSLM2 - Chesapeake Bay, MD 34 mi103 min SSW 4.1 86°F 1012 hPa72°F
WASD2 - 8594900 - Washington, DC 35 mi55 min E 1.9 G 6 87°F 83°F1012.9 hPa
CHCM2 - 8573927 - Chesapeake City, MD 46 mi55 min SW 1.9 G 2.9 84°F 83°F1012.7 hPa

Wind History for Baltimore, MD
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Baltimore, Baltimore-Washington International Airport, MD6 mi19 minSW 37.00 miLight Rain78°F73°F85%1012.7 hPa
Baltimore / Martin, MD11 mi19 minN 010.00 miMostly Cloudy82°F72°F70%1013.5 hPa
Fort Meade / Tipton, MD15 mi18 minN 07.00 miPartly Cloudy73°F72°F94%1013.9 hPa
Annapolis, United States Naval Academy, MD20 mi19 minNNW 38.00 miMostly Cloudy84°F70°F63%1012.9 hPa

Link to 5 minute data for KBWI

Wind History from BWI (wind in knots)
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Last 24hrSW5S4SW4SW4W5W4CalmCalmCalmCalmW3W3NW5NW6W4CalmN5N5NW73SE8S8E9SW3
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Tide / Current Tables for Middle Branch, Baltimore Harbor, Maryland
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Middle Branch
Click for Map
Mon -- 03:05 AM EDT     0.32 feet Low Tide
Mon -- 06:01 AM EDT     Sunrise
Mon -- 08:35 AM EDT     Moonset
Mon -- 09:36 AM EDT     1.75 feet High Tide
Mon -- 04:41 PM EDT     0.43 feet Low Tide
Mon -- 08:24 PM EDT     Sunset
Mon -- 09:53 PM EDT     1.30 feet High Tide
Mon -- 10:30 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.60.40.30.40.60.91.21.51.71.71.61.41.10.90.60.50.40.60.811.21.31.2

Tide / Current Tables for Baltimore Harbor Approach, Maryland Current
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Baltimore Harbor Approach
Click for Map
Mon -- 01:07 AM EDT     -0.70 knots Max Ebb
Mon -- 03:50 AM EDT     0.00 knots Slack
Mon -- 06:01 AM EDT     Sunrise
Mon -- 07:20 AM EDT     1.10 knots Max Flood
Mon -- 08:34 AM EDT     Moonset
Mon -- 10:38 AM EDT     -0.00 knots Slack
Mon -- 01:56 PM EDT     -1.10 knots Max Ebb
Mon -- 05:25 PM EDT     0.00 knots Slack
Mon -- 08:13 PM EDT     0.76 knots Max Flood
Mon -- 08:22 PM EDT     Sunset
Mon -- 10:28 PM EDT     Moonrise
Mon -- 11:13 PM EDT     -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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-0.6-0.7-0.6-0.30.10.50.91.110.80.3-0.2-0.7-1-1.1-1-0.6-0.20.20.60.70.70.40.1

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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