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Marine Weather and Tides
Version 3.4 |
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome. 10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name. |
| Sunrise 7:16AM | Sunset 6:30PM | Monday October 15, 2018 6:54 AM EDT (10:54 UTC) | Moonrise 12:29PM | Moonset 10:26PM | Illumination 33% |  |
ANZ537 Tidal Potomac From Cobb Island To Smith Point- 434 Am Edt Mon Oct 15 2018
.small craft advisory in effect through Tuesday morning...
Rest of the overnight..S winds 10 kt with gusts to 20 kt. Waves 2 ft. Showers likely with patchy drizzle.
Today..SW winds 5 to 10 kt with gusts to 25 kt. Waves 2 ft. A chance of showers.
Tonight..SW winds 10 to 15 kt...becoming nw 15 to 20 kt late. Gusts up to 30 kt. Waves 2 to 3 ft. Showers likely.
Tue..NW winds 10 to 15 kt. Gusts up to 30 kt in the morning. Waves 4 ft...subsiding to 2 ft in the afternoon.
Tue night..SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Wed..NW winds 10 to 15 kt. Gusts up to 25 kt in the afternoon. Waves 2 ft.
Wed night..NW winds 10 to 15 kt with gusts to 25 kt. Waves 3 ft.
Thu..NW winds 10 to 15 kt...diminishing to 5 kt after midnight. Waves 2 to 3 ft...subsiding to 1 ft after midnight.
Fri..SW winds 10 to 15 kt. Waves 1 ft. A chance of showers through the night.
.small craft advisory in effect through Tuesday morning...
Rest of the overnight..S winds 10 kt with gusts to 20 kt. Waves 2 ft. Showers likely with patchy drizzle.
Today..SW winds 5 to 10 kt with gusts to 25 kt. Waves 2 ft. A chance of showers.
Tonight..SW winds 10 to 15 kt...becoming nw 15 to 20 kt late. Gusts up to 30 kt. Waves 2 to 3 ft. Showers likely.
Tue..NW winds 10 to 15 kt. Gusts up to 30 kt in the morning. Waves 4 ft...subsiding to 2 ft in the afternoon.
Tue night..SW winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Wed..NW winds 10 to 15 kt. Gusts up to 25 kt in the afternoon. Waves 2 ft.
Wed night..NW winds 10 to 15 kt with gusts to 25 kt. Waves 3 ft.
Thu..NW winds 10 to 15 kt...diminishing to 5 kt after midnight. Waves 2 to 3 ft...subsiding to 1 ft after midnight.
Fri..SW winds 10 to 15 kt. Waves 1 ft. A chance of showers through the night.
ANZ500 434 Am Edt Mon Oct 15 2018
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A warm front will lift across the waters this morning. A cold front approaching from the great lakes will move southeastward across the waters this evening. A wave of low pressure will move from the tennessee valley to off the southeast virginia coast Tuesday into Tuesday night, pushing the cold front further south Wednesday. A secondary cold front approaching from the great lakes will cross the waters Wednesday night. Small craft advisories may be necessary Tuesday night through Thursday.
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A warm front will lift across the waters this morning. A cold front approaching from the great lakes will move southeastward across the waters this evening. A wave of low pressure will move from the tennessee valley to off the southeast virginia coast Tuesday into Tuesday night, pushing the cold front further south Wednesday. A secondary cold front approaching from the great lakes will cross the waters Wednesday night. Small craft advisories may be necessary Tuesday night through Thursday.
7 Day Forecast for Marine Location Near Tall Timbers, MD
Hourly EDIT Helplocation: 38.15, -76.63 debug
Area Discussion for - Wakefield, VA
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 kakq 151039 afdakq area forecast discussion national weather service wakefield va 639 am edt Mon oct 15 2018 Synopsis A cold front crosses the area tonight, then stalls over the carolinas Tuesday. An area of low pressure moves along the front Tuesday night, with high pressure building back in from the north later Wednesday and Wednesday night. Near term until 6 pm this evening As of 330 am edt Monday... latest analysis indicates surface high pressure centered well off the northeast coast with an inverted trough of low pressure moving ene across the tn ky valley. The associated warm front is slowly lifting through the western carolinas. This front will continue to slowly lift north through the region early this morning. Best forcing is still expected to remain N of the local area early this morning, but still left chance pops across the far N based on latest trends and high-res model guidance. Temperatures this morning will range from the low-mid 50s north to the lower 60s across the se. Warm front will continue to lift north of the region through the day today. Chance pops remain across the far north today closer to the better forcing, while the remainder of the area likely stays dry this afternoon. The area will be in the warm sector today, thus temperatures will be warmer than the past couple of days. Highs will range from the low-mid 70s across the NW to the low to even mid 80s across the se. Short term 6 pm this evening through Wednesday night As of 330 am edt Monday... a cold front approaches the region during the day today and will cross the region later tonight into early Tuesday morning. Best forcing will continue to remain off to the north, thus highest chance of pops with the frontal passage will remain across the northeastern portion of the region. Model soundings show very limited instability overnight, thus left any mention of thunder out of the forecast tonight. Cooler and drier air begins to work in behind the front tonight, thus lows will range from the low-mid 50s nw to the mid 60s se. The cold front likely stalls south of the region over central north carolina on Tuesday with weak low pressure multiple rounds of precipitation moving along the boundary. High end chance to likely pops remain in the forecast across the S SE closer to the boundary Tuesday into Tuesday night. Chilly on Tuesday with highs only making it up into the low-mid 60s for a majority of the area, temperatures will likely struggle to make it above 60 across the nw. High pressure to the north will help to move the stalled front off the coast by Wednesday afternoon and ending the chance for pops across the region. Highs range from the mid 60s N to near 70 s. Wednesday night will likely be the coolest night of the season thus far with cool high pressure building over the region and clearing skies. Lows likely dip into the mid-upper 30s for the northwestern part of the region and lower 40s elsewhere (away from the coast). We will have to watch for the possibility of frost, especially northwest, Wednesday night. Long term Thursday through Sunday As of 230 pm Sunday... high pressure builds into the area from the north through early fri with it shifting offshore late in the day. This will bring a dry but rather cool airmass back into the region. Lows Wed night in the 40s to near 50 se. Highs thurs upr 50s-lwr 60s. Thurs night will be the coolest of the period as the ridge axis settles over the region. Lows from the mid-upr 30s NW (patchy frost???) to near 50 se. Clouds increase late Fri but remaining dry. Highs in the 60s. Low confidence for late next week given different solns btwn the gfs ecmwf. Data suggests SRN stream moisture getting caught up and ejected quickly NE along anthr cold front apprchg from the west. Timing problematic but suggests more of a stratiformed rain event starting Fri night and lasting into Sat night over most of the local area before high pressure pushes the moisture SE sun. Will carry chc pops (rain) at this time. Lows Fri night in the 50s. Highs Sat in the 60s to nr 70 se. Lows Sat night mid 40s NW to mid 50s se. Highs sun mid 50s NW to mid 60s se. |
Aviation 12z Monday through Friday As of 700 am edt Monday... a warm front is lifting through the region this morning, which has brought scattered showers and MVFR ceilings to primarily northern and western portions of the region. Rain showers will continue to progress northeast this morning, impacting sby through the beginning of the TAF period. Any MVFR ceilings should dissipate this morning as clouds break up within the warm sector. A stray shower cannot be ruled out across the north through this afternoon closer to the front. A cold front will cross late tonight into early Tuesday morning bringing another round of sub-vfr conditions in the form of reduced ceilings and the potential for showers. Winds will remain out of the s-sw at around 10 to 15 knots with higher gusts through the day today. Winds shift to the N behind the cold front later tonight and may become gusty to 20+ knots near the coast. Outlook... flight restrictions will continue into Tue (especially tue night) as an area of low pressure moves along the stalled front. Drier W improving conditions from midday Wed through fri. Marine As of 400 am edt Monday... high pressure in the western atlantic is still exerting some influence on the weather conditions across the mid-atlantic states this morning with light southerly flow around 10 kt over the area waters. As the surface high continues to drift slowly eastward an approaching cold front will push toward the area allowing the pressure gradient to tighten over the region. This will allow for a gradual increase in the southwest winds over the waters later this afternoon into tonight. Expect to see winds 15 to 25 kt develop after 00z and continue once the front has moved through switching the winds from SW to nw. As a result have issued a SCA beginning at 00z and continuing through 17z on Tuesday when the surge of cold air should be tapering off and the winds beginning to relax. An area of high pressure temporarily builds over the area late Tuesday into Tuesday night before a reinforcing surge of cold air pushes another cold front through the area late Wednesday into Wednesday night. This second surge has some much colder and should kick winds up well into SCA levels with winds winds of 25 to 30 kt. With the event being several forecast periods away and with one headline going up for the initial front have not raised a second sca at this point, but would expect at a minimum the SCA will be needed and if the winds get a little strong than currently forecast could possible need a gale warning for Wed night into Thursday. Once this surge of cold air weakens on Thursday as high pressure builds into the area should see the winds diminish rather quick for the end of the work week. Hydrology As of 900 pm Sunday... numerous river flood warnings continue on the nottoway, meherrin, appomattox basins, but levels have dropped below flood stage on the james so have cancelled headlines there. Also, have re-issued the areal flood warning for locations along the mattaponi river where the level is still steady or slowly rising at beulahville. See flwakq flsakq for site specific details. Akq watches warnings advisories Md... None. Nc... None. Va... None. Marine... Small craft advisory from 8 pm this evening to 1 pm edt Tuesday for anz630>632-634-650-652-654-656. Synopsis... Ajb lkb near term... Ajb short term... Ajb long term... Mpr aviation... Ajb marine... Ess hydrology... |
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 |
| PPTM2 - 8578240 - Piney Point, MD | 5 mi | 43 min | SW 8 G 9.9 | |||||
| LWTV2 - 8635750 - Lewisetta, VA | 14 mi | 37 min | SW 8 G 8.9 | 1020.6 hPa | ||||
| SLIM2 - 8577330 - Solomons Island, MD | 15 mi | 37 min | SSW 8.9 G 12 | 63°F | 72°F | 1020.5 hPa | ||
| 44042 - Potomac, MD | 18 mi | 35 min | SSW 12 G 14 | 65°F | 1019.8 hPa | |||
| COVM2 - 8577018 - Cove Point LNG Pier, MD | 22 mi | 37 min | SW 8.9 G 11 | 62°F | 1021.5 hPa | |||
| NCDV2 | 25 mi | 43 min | Calm G 2.9 | 59°F | 67°F | 1020.4 hPa | ||
| 44062 - Gooses Reef, MD | 30 mi | 35 min | WSW 16 G 19 | 64°F | 1020.8 hPa | |||
| BISM2 - 8571421 - Bishops Head, MD | 32 mi | 37 min | S 12 G 16 | 65°F | 66°F | 1020.9 hPa | ||
| CA2 - 8571892 - Cambridge, MD | 42 mi | 43 min | 62°F | 69°F | 1021.4 hPa | |||
| BSLM2 - Chesapeake Bay, MD | 44 mi | 145 min | S 1 | 55°F | 1020 hPa | 54°F | ||
| 44058 - Stingray Point, VA | 45 mi | 35 min | SW 9.7 G 12 | 69°F | 1022.1 hPa |
Wind History for Piney Point, MD
(wind in knots) EDIT (on/off) Help| 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 | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | |
| Last 24hr | E | NE | E | NE | N | S G7 | SW | SE | SE | E | SW G6 | SW | S | S | S | SW | S | SW G12 | SW | SW | S | S | SW | SW |
| 1 day ago | NE | NE | NE | NE G9 | N | N | N G20 | N | NW | NW | N | N | N | N | N | NE | NE | NE | NE | NE | NE | NE | NE | NE |
| 2 days ago | N G24 | N | N | N | N G19 | N | NW | N | NW G15 | NW | N | N G14 | NW | NW G16 | NE | NE | NE | NE | N | NE | NE | NE | NE | N |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity, MD | 11 mi | 62 min | SSE 6 | 10.00 mi | Overcast | 63°F | 59°F | 87% | 1020.3 hPa |
| St Marys County Airport, MD | 12 mi | 72 min | SSE 4 | 7.00 mi | Overcast | 59°F | 57°F | 94% | 1021 hPa |
| Patuxent River, Naval Air Station, MD | 16 mi | 2 hrs | SSE 4 | 10.00 mi | Overcast | 67°F | 55°F | 68% | 1020.5 hPa |
| Tappahannock-Essex County Airport, VA | 24 mi | 60 min | N 0 | 5.00 mi | Rain | 60°F | 58°F | 94% | 1021 hPa |
Wind History from NUI (wind in knots)
| 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 | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | |
| Last 24hr | Calm | NE | Calm | N | SE | Calm | E | Calm | NE | Calm | S | S | S | S | S | S | S | S | S | S | S | |||
| 1 day ago | Calm | NE | NE | Calm | N | NW G20 | NW G17 | NW G14 | NW | NW | Calm | Calm | NE | Calm | Calm | Calm | Calm | Calm | Calm | Calm | ||||
| 2 days ago | G20 | NW G17 | NW G22 | NW G21 | NW G20 | NW G15 | NW G16 | NW G16 | W | NW G15 | Calm | Calm | Calm | NW | NW | Calm | Calm | Calm |
Tide / Current Tables for Coles Point, Virginia
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of DataColes Point
Click for Map
Mon -- 01:29 AM EDT 0.28 feet Low Tide
Mon -- 07:15 AM EDT Sunrise
Mon -- 07:41 AM EDT 1.81 feet High Tide
Mon -- 01:15 PM EDT 0.30 feet Low Tide
Mon -- 01:28 PM EDT Moonrise
Mon -- 06:28 PM EDT Sunset
Mon -- 07:53 PM EDT 1.98 feet High Tide
Mon -- 11:26 PM EDT Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 01:29 AM EDT 0.28 feet Low Tide
Mon -- 07:15 AM EDT Sunrise
Mon -- 07:41 AM EDT 1.81 feet High Tide
Mon -- 01:15 PM EDT 0.30 feet Low Tide
Mon -- 01:28 PM EDT Moonrise
Mon -- 06:28 PM EDT Sunset
Mon -- 07:53 PM EDT 1.98 feet High Tide
Mon -- 11:26 PM EDT Moonset
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 |
| 0.5 | 0.3 | 0.3 | 0.5 | 0.9 | 1.3 | 1.6 | 1.8 | 1.8 | 1.6 | 1.1 | 0.7 | 0.4 | 0.3 | 0.3 | 0.6 | 1 | 1.4 | 1.7 | 1.9 | 2 | 1.8 | 1.5 | 1.1 |
Tide / Current Tables for Point Patience, 0.1 mile southwest of, Maryland Current
EDIT (on/off) Help One Week of DataPoint Patience
Click for MapFlood direction 315° true
Ebb direction 145° true
Mon -- 03:17 AM EDT 0.00 knots Slack
Mon -- 04:48 AM EDT 0.29 knots Max Flood
Mon -- 07:03 AM EDT -0.00 knots Slack
Mon -- 07:14 AM EDT Sunrise
Mon -- 10:37 AM EDT -0.48 knots Max Ebb
Mon -- 01:28 PM EDT Moonrise
Mon -- 02:09 PM EDT 0.00 knots Slack
Mon -- 04:42 PM EDT 0.50 knots Max Flood
Mon -- 06:27 PM EDT Sunset
Mon -- 07:30 PM EDT -0.00 knots Slack
Mon -- 11:25 PM EDT Moonset
Mon -- 11:39 PM EDT -0.84 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Click for MapFlood direction 315° true
Ebb direction 145° true
Mon -- 03:17 AM EDT 0.00 knots Slack
Mon -- 04:48 AM EDT 0.29 knots Max Flood
Mon -- 07:03 AM EDT -0.00 knots Slack
Mon -- 07:14 AM EDT Sunrise
Mon -- 10:37 AM EDT -0.48 knots Max Ebb
Mon -- 01:28 PM EDT Moonrise
Mon -- 02:09 PM EDT 0.00 knots Slack
Mon -- 04:42 PM EDT 0.50 knots Max Flood
Mon -- 06:27 PM EDT Sunset
Mon -- 07:30 PM EDT -0.00 knots Slack
Mon -- 11:25 PM EDT Moonset
Mon -- 11:39 PM EDT -0.84 knots Max Ebb
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 |
| -0.8 | -0.6 | -0.4 | -0.1 | 0.2 | 0.3 | 0.2 | 0 | -0.2 | -0.4 | -0.5 | -0.5 | -0.4 | -0.2 | -0 | 0.2 | 0.5 | 0.5 | 0.4 | 0.1 | -0.2 | -0.4 | -0.7 | -0.8 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
GOES 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 Wakefield, VA (6,6,7,8)
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Ground Weather Radar Station Dover AFB, DE
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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. |