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Marine Weather and Tides
Version 3.4 |
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen |
| Sunrise 5:37AM | Sunset 8:32PM | Sunday June 16, 2019 1:34 PM EDT (17:34 UTC) | Moonrise 6:59PM | Moonset 4:10AM | Illumination 99% |  |
ANZ541 Choptank River To Cambridge Md And The Little Choptank River- 1036 Am Edt Sun Jun 16 2019
.small craft advisory in effect until 9 pm edt this evening...
Rest of today..SW winds 15 kt with gusts to 25 kt. Waves 1 ft... Except 2 to 3 ft near the mouth of the choptank.
Tonight..SW winds 10 to 15 kt. Gusts up to 25 kt early in the evening. Waves 1 to 2 ft. A chance of showers and tstms.
Mon..SW winds 10 kt. Waves 1 ft. Showers and tstms likely.
Mon night..SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms.
Tue..SW winds 10 kt. Waves 1 ft. Showers likely with a chance of tstms.
Tue night..SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms.
Wed..S winds 5 to 10 kt. Waves 1 ft. Showers likely. A chance of tstms through the night, then a chance of showers after midnight.
Thu..SW winds 5 to 10 kt. Waves 1 ft. Showers likely. A chance of tstms through the night, then a chance of showers after midnight. Winds and waves higher and visibilities lower in and near tstms.
.small craft advisory in effect until 9 pm edt this evening...
Rest of today..SW winds 15 kt with gusts to 25 kt. Waves 1 ft... Except 2 to 3 ft near the mouth of the choptank.
Tonight..SW winds 10 to 15 kt. Gusts up to 25 kt early in the evening. Waves 1 to 2 ft. A chance of showers and tstms.
Mon..SW winds 10 kt. Waves 1 ft. Showers and tstms likely.
Mon night..SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms.
Tue..SW winds 10 kt. Waves 1 ft. Showers likely with a chance of tstms.
Tue night..SW winds 5 to 10 kt. Waves 1 ft. Showers likely with a chance of tstms.
Wed..S winds 5 to 10 kt. Waves 1 ft. Showers likely. A chance of tstms through the night, then a chance of showers after midnight.
Thu..SW winds 5 to 10 kt. Waves 1 ft. Showers likely. A chance of tstms through the night, then a chance of showers after midnight. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 1036 Am Edt Sun Jun 16 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front will approach the area from the north tonight. It will stall out across the area and linger through the middle of the week.
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A cold front will approach the area from the north tonight. It will stall out across the area and linger through the middle of the week.
7 Day Forecast for Marine Location Near Oxford, MD
Hourly EDIT Helplocation: 38.68, -76.17 debug
Area Discussion for - Baltimore, MD/Washington
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus61 klwx 161405 afdlwx area forecast discussion national weather service baltimore md washington dc 1005 am edt Sun jun 16 2019 Synopsis A cold front will approach the area from the north today. The front will stall out nearby on Monday and remain nearly stationary in the mid-atlantic region through much of this week. It may finally shift southeast of the region by late in the week. Near term through tonight 12z kiad sounding was significantly drier (especially in the 600-800 mb layer) than model forecasts for the same time would have indicated, but overall the potential setup for the rest of today has not changed a whole lot. Radar currently (14z) shows some light rain sprinkles across the i-81 corridor and further scattered development west of there across west virginia. But what we're watching today is the ongoing MCS in ky oh, moving east. The attendant vortex will cross the mountains this afternoon and interact with a developing leeside trough east of the appalachians, coincident with peak heating. The intensity of the storms west of the blue ridge is in question given the weak shortwave involved, but activity should ramp up further east. Model guidance has around 30-40kt bulk shear with some modest cape during the afternoon. The high-res models are favoring a relative maximum somewhere near the dc metro, which would be on the south side of the mid-level shortwave, but the agreement is rather poor (with some guidance showing almost nothing at all this afternoon). Staying the course for now with only minor changes, keeping the highest pops between the dc & baltimore metros. Best timing for severe weather still looks to be between about 3 pm and 8 pm. However, the chance for showers and perhaps even thunderstorms continues through the entire night as additional weak shortwaves approach in the fast-moving westerly flow aloft. Short term Monday through Tuesday night Monday still appears as it will be the most active day this week with a slow moving front nearby and ripples of upper level energy aiding in t-storm formation. Shear and storm motions will be weaker suggesting an increased flash flood threat especially given mid- level flow becoming parallel to sfc front which will also favor training. CAPE values, on the other hand, are expected to be much higher than on Sunday, which also support a severe wx and flash flood threat. A flash flood watch may be issued for some areas at this time tomorrow once confidence in location of t-storms increases. Simulated satellite imagery from various global models indicate convection will be more widespread and intense than today. Long term Wednesday through Saturday Wednesday and Thursday will continue the pattern of previous days, as a stalled front will remain in the region just to our north. High pressure over the western atlantic will continue to funnel warm, humid air northward into the region, and disturbances will continue crossing the region. This combination will result in repeated rounds of showers and thunderstorms, some of which may produce torrential rain and gusty winds. Uncertainty exists Friday, with some recent models like the ecmwf sending a stronger wave through and pushing the front south of the region faster, while the ggem and GFS are slower and linger the front on Friday before finally pushing dry canadian high pressure southward into the region Saturday. By |
Saturday, the canadian high pressure should dominate, with a better risk of dry weather. This should also result in somewhat lower temperatures and markedly lower humidity. Aviation 14z Sunday through Thursday Scattered to numerous showers and storms expected this afternoon through Tuesday. Gusty winds and heavy rain, with flight restrictions, are possible with thunderstorms, but confidence is too low to have anything more than vcts and -shra at this time. Vfr CIGS vis should prevail Wednesday and Thursday. However, typical summer conditions will lead to typical summer problems. Patchy early morning mist fog may result in reduced vis, especially at the more rural terminals. Scattered thunderstorms, primarily during the afternoon and evening hours, may result in reduced vis, low cigs, and gusty winds. Marine Gusty winds ongoing today with SCA criteria being met over much of the waters, and a few gusts approaching gale (though I don't expect this to be widespread). Scattered to numerous showers and thunderstorms are expected this afternoon through Tuesday, and some special marine warnings will likely be required with gusty winds, some small hail, and heavy rain in the thunderstorms. Winds will generally remain below SCA criteria Wednesday and Thursday with a stationary front in the area keeping the gradient weak. However, scattered showers and thunderstorms may produce gusty winds, resulting in potential special marine warnings both days. Hydrology Concern is increasing about flood flash flood potential; however, confidence and certainty are still pretty low. Moisture is not as significant or deep as we might typically like, but having a stalled front in the area does mean there's an increased likelihood of training thunderstorms and thus perhaps some flooding. Will be analyzing the daytime guidance suite to see if any better consensus is reached, but given the convective nature of things, any watch issuances will probably be fairly short-fused in nature. Lwx watches warnings advisories Dc... None. Md... None. Va... None. Wv... None. Marine... Small craft advisory until 9 pm edt this evening for anz530>533-536-538>542. Small craft advisory until 8 am edt Monday for anz534-543. Small craft advisory until 9 pm edt this evening for anz535. Small craft advisory until 1 am edt Monday for anz537. Synopsis... Je near term... Je short term... Lfr long term... Rcm aviation... Je rcm marine... Je rcm hydrology... Je |
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 |
| 44062 - Gooses Reef, MD | 16 mi | 76 min | SSW 7.8 G 9.7 | 76°F | 1013.2 hPa | |||
| TPLM2 - Thomas Point, MD | 21 mi | 34 min | SSW 12 G 13 | 78°F | 71°F | 1013.5 hPa (+0.0) | 64°F | |
| 44063 - Annapolis | 24 mi | 28 min | SW 5.8 G 7.8 | 79°F | 73°F | 1012.5 hPa | ||
| 44042 - Potomac, MD | 46 mi | 28 min | WSW 9.7 G 12 | 80°F | 74°F | 1012.5 hPa |
Wind History for Cambridge, MD
(wind in knots) EDIT (on/off) Help| 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 | 11 AM | 12 PM | 1 PM | |
| Last 24hr | S G20 | S G17 | S G18 | S G17 | S G16 | S G13 | S G10 | SE | S G8 | S G12 | S G12 | S G13 | S G14 | S G15 | S G9 | S G12 | S G11 | S G14 | S G15 | S G19 | S G15 | S G15 | SW G14 | SW G16 |
| 1 day ago | NW | W G18 | W G15 | NW G12 | NW | NW | SW | SE | S | SW | SW | S | S | S | S | S | S | S | S | S G10 | S G18 | SW G15 | S G15 | S G21 |
| 2 days ago | N | S | S G17 | S G13 | S G14 | SW G12 | W G14 | SW G6 | S | W G11 | SW G6 | SW | SW G8 | W G11 | W G12 | W G10 | SW G10 | W G15 | W G17 | W G21 | W G20 | NW G25 | NW G24 | W G19 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Easton / Newman Field, MD | 10 mi | 49 min | SSW 13 | 10.00 mi | Partly Cloudy | 82°F | 66°F | 58% | 1014.2 hPa |
| Cambridge-Dorchester Airport, MD | 12 mi | 49 min | SSW 7 G 12 | 10.00 mi | Fair | 81°F | 68°F | 66% | 1013.5 hPa |
| Bay Bridge Field, MD | 22 mi | 54 min | SSW 6 | 7.00 mi | Fair | 81°F | 66°F | 62% | 1012.5 hPa |
Wind History from ESN (wind in knots)
| 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 | 11 AM | 12 PM | 1 PM | |
| Last 24hr | S G18 | S G18 | S G18 | S G17 | S | S G15 | S | S | S | S | S | S | S G14 | S G15 | S | S | S | S | S | S G16 | S G18 | S G20 | SW G16 | S |
| 1 day ago | W G21 | W G22 | W G17 | W | W | W | Calm | Calm | S | Calm | Calm | Calm | Calm | Calm | SE | SE | SE | Calm | S | S | SW G17 | SW G19 | S G21 | SW G17 |
| 2 days ago | W | SW | S | S G19 | S G16 | SW | S | W | W | W | Calm | W | W | W | W | W | W | W G20 | W G16 | W G21 | W G25 | W G23 | W G22 |
Tide / Current Tables for Oxford, Tred Avon River, Maryland
EDIT Weekend mode (on/off) (on/off) Help One Week of DataOxford
Click for Map
Sun -- 03:43 AM EDT 2.63 feet High Tide
Sun -- 05:09 AM EDT Moonset
Sun -- 05:39 AM EDT Sunrise
Sun -- 11:15 AM EDT 0.54 feet Low Tide
Sun -- 03:48 PM EDT 1.48 feet High Tide
Sun -- 07:59 PM EDT Moonrise
Sun -- 08:31 PM EDT Sunset
Sun -- 09:45 PM EDT 0.37 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 03:43 AM EDT 2.63 feet High Tide
Sun -- 05:09 AM EDT Moonset
Sun -- 05:39 AM EDT Sunrise
Sun -- 11:15 AM EDT 0.54 feet Low Tide
Sun -- 03:48 PM EDT 1.48 feet High Tide
Sun -- 07:59 PM EDT Moonrise
Sun -- 08:31 PM EDT Sunset
Sun -- 09:45 PM EDT 0.37 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 |
| 1.2 | 1.8 | 2.3 | 2.6 | 2.6 | 2.5 | 2.2 | 1.8 | 1.4 | 1 | 0.7 | 0.6 | 0.6 | 0.9 | 1.2 | 1.4 | 1.5 | 1.4 | 1.1 | 0.8 | 0.6 | 0.4 | 0.4 | 0.5 |
Tide / Current Tables for Cove Point (1.1 mi. NE of), Maryland Current
EDIT (on/off) Help One Week of DataCove Point (1.1 mi. NE of)
Click for Map
Sun -- 02:16 AM EDT 0.89 knots Max Flood
Sun -- 05:11 AM EDT Moonset
Sun -- 05:41 AM EDT Sunrise
Sun -- 06:02 AM EDT -0.00 knots Slack
Sun -- 09:25 AM EDT -0.81 knots Max Ebb
Sun -- 12:55 PM EDT 0.00 knots Slack
Sun -- 03:10 PM EDT 0.34 knots Max Flood
Sun -- 05:52 PM EDT -0.00 knots Slack
Sun -- 07:59 PM EDT Moonrise
Sun -- 08:31 PM EDT Sunset
Sun -- 09:02 PM EDT -0.46 knots Max Ebb
Sun -- 11:29 PM EDT 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 02:16 AM EDT 0.89 knots Max Flood
Sun -- 05:11 AM EDT Moonset
Sun -- 05:41 AM EDT Sunrise
Sun -- 06:02 AM EDT -0.00 knots Slack
Sun -- 09:25 AM EDT -0.81 knots Max Ebb
Sun -- 12:55 PM EDT 0.00 knots Slack
Sun -- 03:10 PM EDT 0.34 knots Max Flood
Sun -- 05:52 PM EDT -0.00 knots Slack
Sun -- 07:59 PM EDT Moonrise
Sun -- 08:31 PM EDT Sunset
Sun -- 09:02 PM EDT -0.46 knots Max Ebb
Sun -- 11:29 PM EDT 0.00 knots Slack
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 | 0.8 | 0.9 | 0.8 | 0.7 | 0.4 | 0 | -0.3 | -0.6 | -0.8 | -0.8 | -0.6 | -0.3 | 0 | 0.2 | 0.3 | 0.3 | 0.2 | -0 | -0.2 | -0.4 | -0.5 | -0.4 | -0.2 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
GOES Local Image of Mid-Atlantic 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 (13,3,4,5)
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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. |