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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 6:11AM | Sunset 7:52PM | Friday April 26, 2019 4:35 AM EDT (08:35 UTC) | Moonrise 1:04AM | Moonset 11:00AM | Illumination 57% |  |
ANZ541 Choptank River To Cambridge Md And The Little Choptank River- 137 Am Edt Fri Apr 26 2019
.small craft advisory in effect from 9 am edt this morning through late tonight...
Overnight..SE winds 5 kt. Waves less than 1 ft. A chance of showers.
Fri..S winds 10 to 15 kt with gusts to 30 kt. Waves 2 ft. Widespread showers. Vsby 1 nm or less.
Fri night..W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft. A chance of showers.
Sat..W winds 15 to 20 kt with gusts to 35 kt. Waves 3 ft.
Sat night..W winds 10 to 15 kt with gusts to 20 kt... Becoming ne around 5 kt after midnight. Waves 1 to 2 ft.
Sun..SW winds 10 to 15 kt. Gusts up to 25 kt. Waves 2 ft.
Sun night..N winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
Mon..SE winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers through the night.
Tue..SE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the morning. A chance of showers through the night.
.small craft advisory in effect from 9 am edt this morning through late tonight...
Overnight..SE winds 5 kt. Waves less than 1 ft. A chance of showers.
Fri..S winds 10 to 15 kt with gusts to 30 kt. Waves 2 ft. Widespread showers. Vsby 1 nm or less.
Fri night..W winds 15 to 20 kt with gusts to 30 kt. Waves 3 ft. A chance of showers.
Sat..W winds 15 to 20 kt with gusts to 35 kt. Waves 3 ft.
Sat night..W winds 10 to 15 kt with gusts to 20 kt... Becoming ne around 5 kt after midnight. Waves 1 to 2 ft.
Sun..SW winds 10 to 15 kt. Gusts up to 25 kt. Waves 2 ft.
Sun night..N winds 10 to 15 kt with gusts to 25 kt. Waves 2 ft.
Mon..SE winds 5 to 10 kt. Waves 1 to 2 ft. A chance of showers through the night.
Tue..SE winds 5 to 10 kt. Waves 1 ft. A chance of showers in the morning. A chance of showers through the night.
ANZ500 137 Am Edt Fri Apr 26 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A warm front will move north over the waters later this morning. A cold front will cross from west to east this afternoon and evening. A weak ridge of high pressure will move overhead late Saturday followed by another low pressure system on Sunday. Small craft advisories will be required Saturday, with gale warnings possible. Small craft advisories may be necessary again Sunday and Sunday night.
Synopsis for the tidal potomac and md portion of the chesapeake bay.. A warm front will move north over the waters later this morning. A cold front will cross from west to east this afternoon and evening. A weak ridge of high pressure will move overhead late Saturday followed by another low pressure system on Sunday. Small craft advisories will be required Saturday, with gale warnings possible. Small craft advisories may be necessary again Sunday and Sunday night.
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 260802 afdlwx area forecast discussion national weather service baltimore md washington dc 402 am edt Fri apr 26 2019 Synopsis Low pressure will track from the ohio valley to the eastern great lakes Friday, pulling a cold front across the area late this afternoon. Another storm system could approach the region Sunday. High pressure builds over the region Sunday night into Monday. Near term through tonight An upper level trough east of the ms river this morning will deepen and take on a negative tilt as it closes off over the eastern great lks Sat morning. Very impressive 12-hr 500 mb height falls (120-150 meters) are fcst over the area today as trough axis crosses the area during the next 24 hrs. Will continue to see waves of rain this morning as low-level jet continues to increase to over 40kt this morning. Then, a forced broken or perhaps a solid line of showers and t-storms will cross the area during the afternoon 18z-21z time frame as cold front races eastward. Instability is marginal, but moisture and strong forcing will offset the lack of instability. Damaging winds will be possible with this line of showers t-storms given strong wind fields just above the sfc. The severe risk is greatest east of i-95 and rt 29 where models show the best destabilization. The tornado threat will be greatest over SRN md and east of the chesapeake bay where substantial destabilization is fcst. Cdfnt clears the area in the 21z- 00z time frame with severe threat ending, but showers and perhaps isold t-storms may continue until trof axis crosses the area late in the evening. Then, winds will gust between 35-40 mph due to tightening pressure gradient with showers ending by 03z. Short term Saturday through Sunday night Windy in the morning with gusts in the 35-40 mph with winds diminishing in the mid afternoon hrs. Showers return to the area late Sat night ahead of next frontal system. Moisture will be more limited this time and the best forcing will remain north over pennsylvania. Sct showers are expected mainly north of i-66 with showers ending by 18z sun. Don't see any thunder risk with this system. New SPC day 3 convective outlook doesn't have any thunder areas over us either. Long term Monday through Thursday High pressure to our north on Monday will promote dry conditions and an east southeast flow, holding temperatures a touch below normal with the airmass coming in off the ocean. The high will shift offshore late Monday as a weak area of low pressure tracks to our north. Not see a huge threat of rain from this low as much of the limited moisture remains to our north, but will carry low end chance pops for our northern zones Monday night and into Tuesday. The associated frontal boundary will sink southward into our region and residing to our south by late Tuesday, lingering nearby Wednesday and Thursday. As a result, will maintain chance pops each period as conditions look to remain unsettled with the boundary nearby, and weak shortwave energy tracking overhead. Not expecting a washout by any means, but shower chances will not be null in any |
period. Highest chances for rain will come Wednesday night into Thursday as a bit stronger area of low pressure tracks into the ohio valley, but again remains mainly to our north. Dependent on how far north the low tracks will drive the coverage of showers and possible thunderstorms on Thursday. As another area of low pressure quickly tracks toward the ohio valley Thursday night, the frontal boundary will lift northward as a warm front with continued chances of precipitation as we head into Friday. Before the front sinks to our south Tuesday, slightly above normal temperatures in the mid-upper 70s are expected. With plenty of clouds hanging over the region, near normal high temperatures return Wednesday and Thursday (low-mid 70s), with above normal temperatures well into the 50s each night. Aviation 08z Friday through Tuesday Isold t-storms are possible this morning, but better risk of t-storms is expected this afternoon mainly east of the blue ridge. Gusts to 40 kt possible with the showers t-storms. Severe threat ends by 00z tonight, but strong post-frontal winds up to around 30 kt are likely through 18z sat. High pressure north of the terminals will deliver dry conditions and a light east southeast flow on Monday. A weak area of low pressure will pass to the north Monday night into Tuesday, with a few showers possible, but predominateVFR conditions expected. With a frontal boundary lingering across the region, showers will be possible Tuesday night, with periods of subVFR conditions not out of the question. Marine Gale force gusts are expected this afternoon with broken solid line of showers and t-storms and in the post-frontal environment tonight. Since no ramp up is allowed within first period, have issued a gale warning through 18z sat. While winds will diminish somewhat late tonight, they are expected to strengthen again sat morning. Smws may also be required this afternoon with the line of showers t-storms. A weak pressure gradient will reside over the waters on Monday as high pressure builds to the north, delivering a light east southeast flow. This high will shift offshore Monday night as a weak area of low pressure tracks to the north into Tuesday. A cold front will sink southward into the area on Tuesday, with marginal sca conditions possible Tuesday afternoon and evening. Lwx watches warnings advisories Dc... None. Md... None. Va... None. Wv... None. Marine... Gale warning until 2 pm edt Saturday for anz530>543. Synopsis... Lfr near term... Lfr short term... Lfr long term... Bkf aviation... Bkf lfr marine... Bkf lfr |
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 |
| CA2 - 8571892 - Cambridge, MD | 9 mi | 41 min | 58°F | 66°F | 1007.4 hPa | |||
| TPLM2 - Thomas Point, MD | 21 mi | 35 min | SE 6 G 7 | 58°F | 63°F | 1008.5 hPa (-2.0) | 56°F | |
| COVM2 - 8577018 - Cove Point LNG Pier, MD | 22 mi | 41 min | SSE 5.1 G 6 | 59°F | 1008 hPa | |||
| CPVM2 | 25 mi | 41 min | 58°F | 58°F | ||||
| APAM2 - 8575512 - Annapolis, MD | 27 mi | 41 min | 59°F | 1007.1 hPa | ||||
| SLIM2 - 8577330 - Solomons Island, MD | 29 mi | 41 min | SE 4.1 G 5.1 | 60°F | 62°F | 1006.8 hPa | ||
| BISM2 - 8571421 - Bishops Head, MD | 33 mi | 41 min | ESE 4.1 G 6 | 60°F | 66°F | 1007.6 hPa | ||
| TCBM2 - 8573364 - Tolchester Beach, MD | 37 mi | 41 min | ESE 4.1 G 7 | 57°F | 65°F | 1007.5 hPa | ||
| FSKM2 - 8574728 - Francis Scott Key Bridge, MD | 42 mi | 41 min | ESE 9.9 G 11 | 59°F | 1007.2 hPa | |||
| FSNM2 | 42 mi | 41 min | ESE 8.9 G 9.9 | 58°F | 1007.3 hPa | |||
| PPTM2 - 8578240 - Piney Point, MD | 42 mi | 41 min | SSE 6 G 6 | |||||
| BLTM2 - 8574680 - Baltimore, MD | 46 mi | 41 min | ESE 6 G 8 | 59°F | 63°F | 1006.8 hPa | ||
| WASD2 - 8594900 - Washington, DC | 47 mi | 41 min | ENE 1.9 G 1.9 | 59°F | 65°F | 1006.8 hPa |
Wind History for Cambridge, MD
(wind in knots) EDIT (on/off) Help| 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 | 1 AM | 2 AM | 3 AM | |
| Last 24hr | S | E | NE | NE | E | NE | E | NE | NE | E | NE | NE | NE | NE | NE G14 | E G13 | NE | E | E | E | NE | SE | E | NE |
| 1 day ago | SW | SW G9 | SW | SW | W G13 | NW G19 | NW G21 | NW | NW G17 | NW | NW | NW G14 | NW | NW | N | NW | N | S | -- | SE | -- | E | -- | E |
| 2 days ago | SW | SW | W | W G11 | W | NW | NW | NE | S G10 | S G14 | SW G12 | S G11 | S G13 | SE G14 | SE | SE G15 | S G13 | S G11 | S G11 | S G11 | S | S G9 | S |
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 | 36 min | ENE 4 | 10.00 mi | Fair | 57°F | 54°F | 91% | 1008.5 hPa |
| Cambridge-Dorchester Airport, MD | 12 mi | 50 min | N 0 | 10.00 mi | Mostly Cloudy | 57°F | 51°F | 82% | 1007.8 hPa |
| Bay Bridge Field, MD | 22 mi | 55 min | E 6 | 10.00 mi | Mostly Cloudy | 57°F | 55°F | 94% | 1007.1 hPa |
Wind History from ESN (wind in knots)
| 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 | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | |
| Last 24hr | Calm | Calm | N | NE | NE | NE | N | NE | NE | NE | E | NE | E | E | NE | E | Calm | Calm | NE | NE | NE | NE | NE | Calm |
| 1 day ago | S | NW | NW G17 | NW G20 | NW G16 | NW G21 | NW G21 | NW G16 | NW G15 | W | SW G14 | W | NW | N | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | N |
| 2 days ago | Calm | Calm | Calm | SW | SW | SW | SW | SW G14 | S | SW G14 | S | S | S G15 | S | S | S G14 | S | S | S | S G15 | S | S | S | Calm |
Tide / Current Tables for Oxford, Tred Avon River, Maryland
EDIT Weekend mode (on/off) (on/off) Help One Week of DataOxford
Click for Map
Fri -- 02:03 AM EDT Moonrise
Fri -- 03:36 AM EDT 0.54 feet Low Tide
Fri -- 06:13 AM EDT Sunrise
Fri -- 10:02 AM EDT 1.85 feet High Tide
Fri -- 12:00 PM EDT Moonset
Fri -- 05:33 PM EDT 0.65 feet Low Tide
Fri -- 06:19 PM EDT Last Quarter
Fri -- 07:51 PM EDT Sunset
Fri -- 10:33 PM EDT 1.47 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 02:03 AM EDT Moonrise
Fri -- 03:36 AM EDT 0.54 feet Low Tide
Fri -- 06:13 AM EDT Sunrise
Fri -- 10:02 AM EDT 1.85 feet High Tide
Fri -- 12:00 PM EDT Moonset
Fri -- 05:33 PM EDT 0.65 feet Low Tide
Fri -- 06:19 PM EDT Last Quarter
Fri -- 07:51 PM EDT Sunset
Fri -- 10:33 PM EDT 1.47 feet High 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 |
| 1.1 | 0.9 | 0.7 | 0.6 | 0.6 | 0.7 | 0.9 | 1.2 | 1.5 | 1.8 | 1.8 | 1.8 | 1.6 | 1.4 | 1.2 | 1 | 0.8 | 0.7 | 0.7 | 0.8 | 1 | 1.3 | 1.4 | 1.5 |
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
Fri -- 12:10 AM EDT -0.00 knots Slack
Fri -- 02:03 AM EDT Moonrise
Fri -- 03:07 AM EDT -0.31 knots Max Ebb
Fri -- 05:27 AM EDT 0.00 knots Slack
Fri -- 06:15 AM EDT Sunrise
Fri -- 08:43 AM EDT 0.56 knots Max Flood
Fri -- 12:02 PM EDT Moonset
Fri -- 12:18 PM EDT -0.00 knots Slack
Fri -- 03:57 PM EDT -0.61 knots Max Ebb
Fri -- 06:19 PM EDT Last Quarter
Fri -- 07:16 PM EDT 0.00 knots Slack
Fri -- 07:52 PM EDT Sunset
Fri -- 09:53 PM EDT 0.35 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 12:10 AM EDT -0.00 knots Slack
Fri -- 02:03 AM EDT Moonrise
Fri -- 03:07 AM EDT -0.31 knots Max Ebb
Fri -- 05:27 AM EDT 0.00 knots Slack
Fri -- 06:15 AM EDT Sunrise
Fri -- 08:43 AM EDT 0.56 knots Max Flood
Fri -- 12:02 PM EDT Moonset
Fri -- 12:18 PM EDT -0.00 knots Slack
Fri -- 03:57 PM EDT -0.61 knots Max Ebb
Fri -- 06:19 PM EDT Last Quarter
Fri -- 07:16 PM EDT 0.00 knots Slack
Fri -- 07:52 PM EDT Sunset
Fri -- 09:53 PM EDT 0.35 knots Max Flood
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 | -0.1 | -0.2 | -0.3 | -0.3 | -0.1 | 0.1 | 0.4 | 0.5 | 0.6 | 0.5 | 0.3 | 0.1 | -0.2 | -0.4 | -0.5 | -0.6 | -0.5 | -0.3 | -0.1 | 0.2 | 0.3 | 0.4 | 0.3 |
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 (4,6,7,8)
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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. |