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Marine Weather and Tides
Version 3.4 |
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 6:20AM | Sunset 8:09PM | Tuesday August 11, 2020 3:25 PM EDT (19:25 UTC) | Moonrise 11:26PM | Moonset 12:47PM | Illumination 46% |  |
ANZ536 Tidal Potomac From Indian Head To Cobb Island- 139 Pm Edt Tue Aug 11 2020
This afternoon..S winds 5 kt. Waves less than 1 ft. A slight chance of showers and tstms.
Tonight..S winds 5 kt. Waves less than 1 ft.
Wed..S winds 5 kt. Waves less than 1 ft. Showers and tstms likely.
Wed night..SE winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms.
Thu..E winds around 5 kt. Waves 1 ft. Showers and tstms likely.
Thu night..E winds around 5 kt. Waves 1 ft. A chance of showers and tstms.
Fri..E winds 5 kt. Waves less than 1 ft. A chance of tstms. Showers likely .
Sat..NE winds 5 to 10 kt. Waves 1 ft. A chance of tstms. Showers likely . Winds and waves higher and visibilities lower in and near tstms.
This afternoon..S winds 5 kt. Waves less than 1 ft. A slight chance of showers and tstms.
Tonight..S winds 5 kt. Waves less than 1 ft.
Wed..S winds 5 kt. Waves less than 1 ft. Showers and tstms likely.
Wed night..SE winds around 5 kt. Waves 1 ft or less. A chance of showers and tstms.
Thu..E winds around 5 kt. Waves 1 ft. Showers and tstms likely.
Thu night..E winds around 5 kt. Waves 1 ft. A chance of showers and tstms.
Fri..E winds 5 kt. Waves less than 1 ft. A chance of tstms. Showers likely .
Sat..NE winds 5 to 10 kt. Waves 1 ft. A chance of tstms. Showers likely . Winds and waves higher and visibilities lower in and near tstms.
ANZ500 139 Pm Edt Tue Aug 11 2020
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build across the waters through this evening. A cold front will approach from the northwest during the middle of the week, stalling in the area towards week's end.
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will build across the waters through this evening. A cold front will approach from the northwest during the middle of the week, stalling in the area towards week's end.
7 Day Forecast for Marine Location Near King George, VA
Hourly EDIT Helplocation: 38.24, -77.18 debug
Area Discussion for - Baltimore, MD/Washington
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS61 KLWX 111433 AFDLWX
Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 1033 AM EDT Tue Aug 11 2020
SYNOPSIS. High pressure will settle to the south of our area through tonight. A cold front will approach late Wednesday into Wednesday night and remain stalled near our area through the end of the week.
NEAR TERM /THROUGH WEDNESDAY/. Nearly all of the fog and low clouds that developed to the east of the Blue Ridge this morning have burned off. What little residual fog still exists over portions of Orange, Culpeper, Fauquier and Albemarle Counties should burn off over the next hour or so. Ample sunshine is expected through the remainder of the morning into the early afternoon hours, which will allow temperatures to climb into the low 90s for most. A cumulus field is starting to develop across northeastern Maryland along and northwest of the bay breeze boundary. While coverage of storms this afternoon is expected to be isolated to widely scattered in nature, CAMs hint that northeastern Maryland (convergence along bay breeze may locally enhance coverage) as well as locations to the west of the Blue Ridge (closer to the weak shortwave passing through) may stand the greatest chance for a popup storm this afternoon.
Previous discussion . Latest surface analysis depicts a cold front heading southeastward across the Great Lakes. High pressure is located over the western Atlantic. Through Wednesday, this front will make slow but steady progress southeast, reaching our forecast area late on Wednesday.
For today, we will remain under the general influence of the high to our southeast. However, a weak shortwave aloft, currently located over the Great Lakes and Ohio Valley, will cross the region late today. This will likely result in more spotty showers and thunderstorms this afternoon, perhaps with a little better coverage given the upper level support, but still fairly low, isolated to scattered. Majority of the region will likely remain dry today, but not quite as many as yesterday. Highs will be again in the low 90s with heat indices approaching 100.
Tonight will be soupy. With the upper level support and surface insolation ending, the storms mostly dissipate, but a stray shower can't be completely ruled out overnight. Lows mostly in the 70s.
Wednesday, the actual cold front will move in from the northwest, starting to stall out as it does so. In addition, a closed low, currently located over Oklahoma and Kansas, will be moving towards us. This will touch off some more widespread showers and thunderstorms, and with plenty of moisture available (pw's potentially over 2 inches) and instability, locally heavy rain along with isolated gusty winds are a threat. Wednesday will resemble the days late last week much more than it will Monday or Sunday. However, enough sun will make it through early on to boost temps back into the lower 90s in much of the area, helping the strong storm threat with the additional CAPE.
SHORT TERM /WEDNESDAY NIGHT THROUGH THURSDAY NIGHT/. The cold front will be stalled in our vicinity, perhaps just north of the region or across our northern zones, Wednesday night through Thursday night. Meanwhile, the upper low to the west in the Ohio Valley will stall as well, gradually weakening. There may however be an infusion of tropical moisture from a weak disturbance to our south. Either way, PW's should already be quite high, so plenty of showers and some thunderstorms will be likely. Temps will start to drop a bit with the increased rain and cloud cover, with most areas staying in the 80s on Thursday, but enough CAPE should still be generated from insolation to create some storms with heavy rain, if not some isolated gusty winds. A flood threat is present.
LONG TERM /FRIDAY THROUGH MONDAY/. The upper-level pattern remains very unsettled across the east coast, with an upper ridge locked in over the west coast. Over the Mid-Atlantic, an upper trough will sit overhead through at least Saturday. Meanwhile, at the surface, high pressure sits over the western Atlantic, while a nearly stationary surface front sits over the region. Guidance shows an area (or multiple areas) of low pressure riding along this boundary through Saturday/early Sunday. All of this will combine to bring showers and thunderstorms to the area at least through Saturday, and likely into Sunday and Monday as well. Timing is still a bit uncertain, as it can be a struggle to nail down the exact timing of when the front will get out of here, so will carry likely POPs into Sunday, but lower percentages, then lesser chances on Monday. Some guidance does hint at high pressure trying to build in Sunday/Monday, hence the lowered POPs. Will have to see how that forecast evolves in the coming days however. As far as temperatures go during this timeframe, looking at below average readings in the low to mid 80s.
Friday and Saturday look to continue to pose a risk for flooding across the area. Steering flow will be relatively weak in the mid- upper levels and a slow moving surface front will be setup over the region. Additionally, surface flow will be off of the Atlantic, pushing PWATS well above average for this time of year (+2 SD). This all is becoming increasingly concerning for the flooding threat.
All being said, this is a fairly complex pattern with a lot of different moving pieces. So, the uncertainty in exact timing is still high at this point, but the Friday/Saturday timeframe looks to be very wet overall. Stay tuned for latest forecasts as timing details are ironed out.
AVIATION /14Z TUESDAY THROUGH SATURDAY/. Patchy low clouds/fog at CHO have burnt off. Prevailing VFR conditions and light southerly winds are expected through the remainder of the day. The main aviation concern over the next couple days will be thunderstorm coverage. Overall coverage of storms today should remain isolated to widely scattered in nature. However, coverage will increase significantly Wednesday and Thursday, with a commensurate rise in the risk of brief IFR cigs/vsby and gusty winds. Best timing is afternoon and evening, though the risk may linger through the night Wednesday and Thursday nights.
Unsettled conditions Friday and Saturday, with a front stalled nearby/overhead. Periods of moderate to heavy rain are possible during this time, which could lead to flight restrictions at all terminals. Timing is still a bit uncertain on the greatest threat (see long term discussion below for more details), but generally looks like a messy Friday/Saturday, with MVFR conditions likely at times, and IFR not out of the question as well.
MARINE. No significant synoptic wind issues expected through the next few days, but southerly channeling could cause winds to approach SCA levels later today into tonight. Current thinking is that gusts will remain below SCA levels, but will continue to monitor winds through the remainder of the day. Otherwise, the main concern through Thursday will be thunderstorms. Coverage should remain isolated to widely scattered today, but will increase significantly Wednesday and Thursday, with gusty winds a threat from any storm. Best timing is afternoon and evening, though the risk may linger through the night Wednesday and Thursday nights.
Winds will generally be below SCA criteria Friday. Heavy rain, and perhaps a few gusty thunderstorms, over the waters could lead to some short-fused headlines needing to be issued Friday, but not expecting any widespread severe threat at this time.
By Saturday, low pressure developing along the frontal boundary could lead to some gusty winds up to SCA criteria.
LWX WATCHES/WARNINGS/ADVISORIES. DC . None. MD . None. VA . None. WV . None. MARINE . None.
SYNOPSIS . RCM NEAR TERM . RCM/KJP SHORT TERM . RCM LONG TERM . CJL AVIATION . RCM/CJL/KJP MARINE . RCM/CJL/KJP
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a map| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
| NCDV2 | 9 mi | 55 min | E 6 G 8 | 87°F | 89°F | 1013.4 hPa | ||
| PPTM2 - 8578240 - Piney Point, MD | 35 mi | 55 min | SE 6 G 7 | |||||
| SLIM2 - 8577330 - Solomons Island, MD | 39 mi | 55 min | SSW 5.1 G 7 | 87°F | 84°F | 1014 hPa | ||
| LWTV2 - 8635750 - Lewisetta, VA | 42 mi | 55 min | SSW 6 G 8 | 87°F | 82°F | 1014.3 hPa | ||
| COVM2 - 8577018 - Cove Point LNG Pier, MD | 44 mi | 175 min | SSE 9.9 G 11 | 1015.9 hPa | ||||
| BSLM2 - Chesapeake Bay, MD | 45 mi | 115 min | SSE 5.1 | 1014 hPa | ||||
| WASD2 - 8594900 - Washington, DC | 45 mi | 55 min | S 7 G 11 | 87°F | 83°F | 1013.7 hPa | ||
| 44062 - Gooses Reef, MD | 46 mi | 37 min | 83°F | 84°F |
Wind History for Piney Point, MD
(wind in knots) EDIT (on/off) Help| 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 | 1 PM | 2 PM | 3 PM | |
| Last 24hr | SE | S | S | S | S | S | S | S | S | S | SW | SW | SW | SW | SW | SW G12 | S | SW | SW | S | SE | SE G7 | SE | SE |
| 1 day ago | SE | S G15 | S | S G15 | S | S | S | S | S | S | SW | SW | SW G10 | SW | SW G9 | W | S | S | S | S | SE | SE | SE | SE |
| 2 days ago | S | S | E | E | SE | E | SW | N | SW | SW | SW G10 | W | W | NW | NW | NW | NW | W | S | SE | SE | SE | SE | SE |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Fredericksburg, Shannon Airport, VA | 14 mi | 30 min | SSE 6 | 10.00 mi | Partly Cloudy | 91°F | 74°F | 57% | 1013.5 hPa |
| Stafford, Stafford Regional Airport, VA | 18 mi | 30 min | N 0 | 10.00 mi | Mostly Cloudy | 91°F | 70°F | 51% | 1015.2 hPa |
| Quantico Marine Corps Airfield - Turner Field, VA | 20 mi | 29 min | no data | 8.00 mi | Fair | 88°F | 75°F | 66% | 1013.9 hPa |
Link to 5 minute data for KEZF
Wind History from EZF (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 24hr | W | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | SE | Calm | Calm | Calm | Calm | Calm | Calm | Calm | SE | S | S | SW | S |
| 1 day ago | S | S | S | S | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | SE | S | NW | E |
| 2 days ago | NE | E | NE | E | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | SW | S | SE | SW | Calm |
Tide / Current Tables for Hopyard Landing, Rappahannock River, Virginia
EDIT Weekend mode (on/off) (on/off) Help One Week of DataHopyard Landing
Click for Map
Tue -- 12:31 AM EDT 2.29 feet High Tide
Tue -- 06:20 AM EDT Sunrise
Tue -- 07:11 AM EDT 0.56 feet Low Tide
Tue -- 12:47 PM EDT Last Quarter
Tue -- 01:02 PM EDT 2.01 feet High Tide
Tue -- 01:47 PM EDT Moonset
Tue -- 06:49 PM EDT 0.38 feet Low Tide
Tue -- 08:06 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 12:31 AM EDT 2.29 feet High Tide
Tue -- 06:20 AM EDT Sunrise
Tue -- 07:11 AM EDT 0.56 feet Low Tide
Tue -- 12:47 PM EDT Last Quarter
Tue -- 01:02 PM EDT 2.01 feet High Tide
Tue -- 01:47 PM EDT Moonset
Tue -- 06:49 PM EDT 0.38 feet Low Tide
Tue -- 08:06 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 |
| 2.3 | 2.3 | 2.1 | 1.7 | 1.3 | 0.9 | 0.7 | 0.6 | 0.6 | 0.9 | 1.3 | 1.7 | 1.9 | 2 | 1.9 | 1.6 | 1.2 | 0.7 | 0.4 | 0.4 | 0.5 | 0.8 | 1.3 | 1.8 |
Tide / Current Tables for Corbins Neck, Rappahannock River, Virginia
EDIT (on/off) Help One Week of DataCorbins Neck
Click for Map
Tue -- 12:38 AM EDT 2.89 feet High Tide
Tue -- 06:20 AM EDT Sunrise
Tue -- 07:42 AM EDT 0.69 feet Low Tide
Tue -- 12:47 PM EDT Last Quarter
Tue -- 01:09 PM EDT 2.54 feet High Tide
Tue -- 01:47 PM EDT Moonset
Tue -- 07:20 PM EDT 0.47 feet Low Tide
Tue -- 08:07 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Tue -- 12:38 AM EDT 2.89 feet High Tide
Tue -- 06:20 AM EDT Sunrise
Tue -- 07:42 AM EDT 0.69 feet Low Tide
Tue -- 12:47 PM EDT Last Quarter
Tue -- 01:09 PM EDT 2.54 feet High Tide
Tue -- 01:47 PM EDT Moonset
Tue -- 07:20 PM EDT 0.47 feet Low Tide
Tue -- 08:07 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 |
| 2.8 | 2.9 | 2.7 | 2.3 | 1.8 | 1.3 | 0.9 | 0.7 | 0.7 | 0.9 | 1.5 | 2 | 2.4 | 2.5 | 2.5 | 2.1 | 1.6 | 1.1 | 0.7 | 0.5 | 0.5 | 0.8 | 1.4 | 2.1 |
Weather Map
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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)
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Ground Weather Radar Station Sterling, VA
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