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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 7:18AM | Sunset 5:21PM | Thursday January 24, 2019 1:40 AM EST (06:40 UTC) | Moonrise 9:41PM | Moonset 9:52AM | Illumination 88% |  |
ANZ537 Tidal Potomac From Cobb Island To Smith Point- 116 Am Est Thu Jan 24 2019
.gale warning in effect through this afternoon...
.small craft advisory in effect from this evening through late tonight...
Overnight..S winds 20 kt with gusts to 35 kt. Waves 4 ft. Rain.
Thu..S winds 20 to 25 kt with gusts to 45 kt... Becoming nw 15 to 20 kt with gusts to 35 kt in the afternoon. Waves 4 ft. Rain. Vsby 1 nm or less.
Thu night..NW winds 15 to 20 kt with gusts to 30 kt...becoming W 5 to 10 kt with gusts to 20 kt late. Waves 4 ft...subsiding to 2 ft after midnight.
Fri..W winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft.
Fri night..N winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
Sat..SE winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
Sat night..S winds 10 kt with gusts to 20 kt. Waves 1 to 2 ft.
Sun..W winds 5 to 10 kt. Waves 1 ft.
Mon..W winds 5 kt...becoming s. Waves 1 ft.
.gale warning in effect through this afternoon...
.small craft advisory in effect from this evening through late tonight...
Overnight..S winds 20 kt with gusts to 35 kt. Waves 4 ft. Rain.
Thu..S winds 20 to 25 kt with gusts to 45 kt... Becoming nw 15 to 20 kt with gusts to 35 kt in the afternoon. Waves 4 ft. Rain. Vsby 1 nm or less.
Thu night..NW winds 15 to 20 kt with gusts to 30 kt...becoming W 5 to 10 kt with gusts to 20 kt late. Waves 4 ft...subsiding to 2 ft after midnight.
Fri..W winds 10 to 15 kt with gusts to 25 kt. Waves 1 to 2 ft.
Fri night..N winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
Sat..SE winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
Sat night..S winds 10 kt with gusts to 20 kt. Waves 1 to 2 ft.
Sun..W winds 5 to 10 kt. Waves 1 ft.
Mon..W winds 5 kt...becoming s. Waves 1 ft.
ANZ500 116 Am Est Thu Jan 24 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front over the ohio valley will cross the waters this afternoon as low pressure passes through the region. A reinforcing front will push through the waters on Friday, with high pressure transiting the area through the weekend. Small craft advisories are likely Friday and Friday night, and may be required Saturday night and Sunday.
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front over the ohio valley will cross the waters this afternoon as low pressure passes through the region. A reinforcing front will push through the waters on Friday, with high pressure transiting the area through the weekend. Small craft advisories are likely Friday and Friday night, and may be required Saturday night and Sunday.
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 240604 afdakq area forecast discussion national weather service wakefield va 104 am est Thu jan 24 2019 Synopsis A cold front will approach from the west tonight, with an area of low pressure intensifying along the front Thursday morning. The trailing cold front crosses the area Thursday afternoon. High pressure builds in again for the weekend. Near term until 6 am this morning As of 830 pm est Wednesday... warm front has made it through most of the fa... W only far wnw areas (well wnw of ric) still hanging onto sfc cold air wedge. Breezy and warm elsewhere W mostly cloudy conditions w... Partly cloudy e. S winds will remain gusty to 20-30 mph overnight... Highest e of I 95 to the coast. Both kakq and kdox radars currently down so determining pcpn coverage difficult. Sfc obs void of any -ra so far. Using nearby radar to the W and s... Some patchy -ra appears to be moving slowly E in WRN va... And slowly N in nc. Based on near term hi res model guidance... Continuing the trend of slowly raising pops mainly w-e overnight... Eventually to 80-100% far W and 20-40% at the coast. Lows are generally near current values... From the l-m40s far wnw to the 50s elsewhere. Short term 6 am this morning through Saturday As of 350 pm est Wednesday... the low tracks NE along the advancing cold front Thu morning with the trailing cold front crossing the area through the day, pushing offshore by 21z Thu to 00z fri. Data shows a decent slug of SRN stream moisture combined with strong lift btwn 12z- 18z just ahead of the cold front. Some convective elements noted for a band of locally heavy downpours. Thus, continued with some r+ for a 3-6 hr period. Also see the potential for brief wind gusts to 35-45 mph sometime from 12-15z give or take an hr or two. Opted against a wind advisory in favor of issuing sps's as the duration is expected to be only 1-2 hrs. If a wind advisory were to be issued by next shift, would likely be the eastern shore and far SE va NE nc. Pcpn quickly tapers off to some light rain or showers Thu aftn west to east as the front pushes all the deep moisture towards the coast. Mild with highs upper 50s NW and most of the eastern shore to lower-mid 60s most other places. QPF will avg 0.75" to 1.25". Clearing and colder Thu night as weak high pressure briefly builds in from the nw. Lows mid upper 20s NW to mid 30s se. A trailing upper level shortwave will cross the area on Fri and after a sunny start will see some clouds develop by late morning early aftn. There will be decent lift due to the upper energy aloft, but low levels look very dry so did not add any pops at this time (though will need to watch this closely as a 20% pop may be needed). Back to near normal temps Fri with highs mainly in the 40s and then below normal temps Fri night (lows in the upper teens to mid 20s) and Sat (highs upper 30s to lower 40s) as cold high pressure builds in and settles over the region. Long term Saturday night through Wednesday As of 350 pm est Wednesday... fairly quiet conditions for much of the extended period in our area. An upper level disturbance skirts north of the area during the day on Sunday which may lead to some light precipitation across the far northern portions of the area. Due to the lack of moisture, just maintained a slight chance of pops across the north into Sunday night. Warm air advection develops Monday into Tuesday as upper heights build ahead of another great lakes low pressure system. The associated cold front approaches the region late in the day on and crosses the region early Wednesday bringing the potential for rain or snow showers across the region. Much colder conditions work into the region by Wednesday night. Aviation 06z Thursday through Monday As of 105 am est Thursday... low pressure and an associated cold front will push ewd across the mountains early this morning, and then arrive into the region later this morning, before pushing offshore this aftn. A strong pressure gradient ahead of this system will result in a modestly strong S wind of 12-15kt with gusts to ~25kt early, will then increase to 15-20kt with gusts of 25-30kt (locally up to 35kt toward the coast). The potential for llws of 45-60kt ~2kft will continue early this morning, mainly for sby phf orf ecg. The wind will become westerly in the wake of the cold front with gusts to ~20kt. Light rain will overspread the region from 08-12z, with a period of moderate to heavy rain |
passing across the region later this morning through early aftn. Generally MVFR CIGS are expected, with a low probability if ifr cigs. A period of ifr vsby will likely occur with the heaviest rain, and this will likely occur after 12z for the TAF sites. Drier air quickly arrives behind the cold front this aftn with rain ending from about 16-19z. Mostly clear by tonight with a nw wind of 5-10kt. A weak and dry cold front crosses the area Friday, with high pressure building into the region Friday night through Monday. Marine As of 400 pm est Wednesday... a digging upper trough from the central plains ewrd into the oh tn valleys will result in sfc low pressure and an associated frontal boundary will push into the area fm the west tonight into Thu morning. Increasingly steep pressure gradient between departing high pressure and the approaching low frontal boundary will allow S winds to increase to 15-25 kt with gusts to 30-40 kt very late tonight thru Thu morning. Have gone with a gale warning for the NRN three coastal zns (650-654) from late tonight into early Thu aftn, due to gusts to 35-40 kt in these areas. Have maintained sca's for the remainder of the waters into early Thu aftn, with gusts 30-35 kt possible at the mouth of the ches bay, the currituck sound, and the SRN two coastal zns. Waves will build to 3-5 ft in the ches bay tonight into thu morning, with seas building to 7-12 ft. Will have to monitor for the potential for a high surf advisory on Thu from roughly CAPE charles light northward. Winds will become NW behind the frontal boundary late Thu aftn. Cold advection behind the front appears rather anemic with northwest winds 10-20 kt in its wake, decreasing further Thu evening. Seas will be slow to subside Thu into Fri morning, with sca's for the coastal zns lasting into Fri morning. High pressure builds into the region Fri into Sat with tranquil marine conditions in store through the upcoming weekend. Tides coastal flooding As of 350 pm est Wednesday... departures will continue to rise in the strong S flow through thu morning (especially in the mid upper bay) but not expecting any sites to hit minor flood thresholds at this time. Equipment As of 100 am est Thursday... the kdox radar is currently down for a faulty azimuth motor. Parts will need to be ordered and a return to service time is unknown. The kakq radar remains down due to a pedestal slip ring assembly failure. Due to the time to procure ship the needed parts, and the repair time, the radar will remain down through at least Friday. Akq watches warnings advisories Md... None. Nc... None. Va... None. Marine... Small craft advisory until 1 pm est this afternoon for anz635>637. Small craft advisory until 4 pm est this afternoon for anz630>634-638. Small craft advisory until 4 am est early this morning for anz650-652-654. Gale warning from 4 am early this morning to 1 pm est this afternoon for anz650-652-654. Small craft advisory until 10 am est Friday for anz656-658. Synopsis... Alb lkb near term... Alb short term... Lkb long term... Ajb mrd aviation... Ajz marine... Tmg rhr tides coastal flooding... Akq equipment... Akq |
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 | 59 min | S 13 G 15 | |||||
| LWTV2 - 8635750 - Lewisetta, VA | 14 mi | 53 min | S 11 G 12 | 56°F | 37°F | 1011.2 hPa | ||
| SLIM2 - 8577330 - Solomons Island, MD | 15 mi | 53 min | SSE 12 G 15 | 54°F | 39°F | 1010.9 hPa | ||
| COVM2 - 8577018 - Cove Point LNG Pier, MD | 22 mi | 53 min | S 20 G 21 | 46°F | 1011.9 hPa | |||
| NCDV2 | 25 mi | 53 min | S 9.9 G 15 | 58°F | 34°F | 1009.4 hPa | ||
| BISM2 - 8571421 - Bishops Head, MD | 32 mi | 53 min | SSE 12 G 15 | 43°F | 1012.5 hPa | |||
| CA2 - 8571892 - Cambridge, MD | 42 mi | 53 min | 53°F | 35°F | 1012 hPa | |||
| BSLM2 - Chesapeake Bay, MD | 44 mi | 131 min | SSE 11 | 46°F | 1012 hPa | 44°F |
Wind History for Piney Point, MD
(wind in knots) EDIT (on/off) Help| 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 | 12 AM | |
| Last 24hr | SW G16 | S | SW | SW | SW | S | SW | S | SW | SW | -- | SW | E | E | E | SE | S | SE | S | S | S | S G16 | S | S G15 |
| 1 day ago | NW | N | N | N G17 | N | N G16 | N | N | N | N | NW | NW | NW | N | S | SE | S | SE | S | S | S | S G15 | S | S |
| 2 days ago | NW G34 | NW | N | N | NW | NW | NW | NW | NW | NW | NW | N G27 | NW | NW | NW G32 | N | NW | N G27 | N | 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 Marys County Airport, MD | 12 mi | 58 min | SE 4 | 10.00 mi | Overcast | 54°F | 50°F | 88% | 1011.8 hPa |
| Patuxent River, Naval Air Station, MD | 16 mi | 1.8 hrs | S 7 | 10.00 mi | Overcast | 57°F | 55°F | 93% | 1012.6 hPa |
| Tappahannock-Essex County Airport, VA | 24 mi | 46 min | SSE 9 G 14 | 10.00 mi | Overcast | 59°F | 54°F | 85% | 1010.8 hPa |
Wind History from NUI (wind in knots)
| 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 | 7 AM | 8 AM | 9 AM | 10 AM | |
| Last 24hr | SW | W | SW | Calm | SE | SE | E | SE | S | S | S | S | S | S | S | S | S | SW | S | S | S | |||
| 1 day ago | ||||||||||||||||||||||||
| 2 days ago |
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
Thu -- 04:28 AM EST 1.88 feet High Tide
Thu -- 07:17 AM EST Sunrise
Thu -- 09:51 AM EST Moonset
Thu -- 10:41 AM EST -0.33 feet Low Tide
Thu -- 04:51 PM EST 1.96 feet High Tide
Thu -- 05:20 PM EST Sunset
Thu -- 09:40 PM EST Moonrise
Thu -- 11:11 PM EST -0.34 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 04:28 AM EST 1.88 feet High Tide
Thu -- 07:17 AM EST Sunrise
Thu -- 09:51 AM EST Moonset
Thu -- 10:41 AM EST -0.33 feet Low Tide
Thu -- 04:51 PM EST 1.96 feet High Tide
Thu -- 05:20 PM EST Sunset
Thu -- 09:40 PM EST Moonrise
Thu -- 11:11 PM EST -0.34 feet Low Tide
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 | 0.6 | 1.2 | 1.6 | 1.9 | 1.8 | 1.5 | 1 | 0.5 | 0.1 | -0.2 | -0.3 | -0.1 | 0.4 | 1.1 | 1.6 | 1.9 | 2 | 1.7 | 1.3 | 0.8 | 0.3 | -0.1 | -0.3 |
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
Thu -- 01:26 AM EST 0.50 knots Max Flood
Thu -- 03:54 AM EST -0.00 knots Slack
Thu -- 07:17 AM EST Sunrise
Thu -- 07:32 AM EST -0.76 knots Max Ebb
Thu -- 09:51 AM EST Moonset
Thu -- 11:16 AM EST 0.00 knots Slack
Thu -- 01:28 PM EST 0.59 knots Max Flood
Thu -- 04:02 PM EST -0.00 knots Slack
Thu -- 05:19 PM EST Sunset
Thu -- 08:05 PM EST -1.07 knots Max Ebb
Thu -- 09:40 PM EST Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for MapFlood direction 315° true
Ebb direction 145° true
Thu -- 01:26 AM EST 0.50 knots Max Flood
Thu -- 03:54 AM EST -0.00 knots Slack
Thu -- 07:17 AM EST Sunrise
Thu -- 07:32 AM EST -0.76 knots Max Ebb
Thu -- 09:51 AM EST Moonset
Thu -- 11:16 AM EST 0.00 knots Slack
Thu -- 01:28 PM EST 0.59 knots Max Flood
Thu -- 04:02 PM EST -0.00 knots Slack
Thu -- 05:19 PM EST Sunset
Thu -- 08:05 PM EST -1.07 knots Max Ebb
Thu -- 09:40 PM EST Moonrise
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 |
| 0.2 | 0.5 | 0.5 | 0.3 | -0 | -0.3 | -0.6 | -0.7 | -0.7 | -0.6 | -0.4 | -0.1 | 0.3 | 0.6 | 0.6 | 0.4 | 0 | -0.4 | -0.7 | -1 | -1.1 | -1 | -0.8 | -0.5 |
Weather Map and Satellite Images
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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 (1,6,7,8)
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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. |