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Marine Weather and Tides
Version 3.4 |
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 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 7:02AM | Sunset 7:57PM | Wednesday August 21, 2019 4:29 AM EDT (08:29 UTC) | Moonrise 10:47PM | Moonset 11:02AM | Illumination 68% |  |
GMZ053 Expires:201908210830;;961363 Fzus52 Kkey 210229 Cwfkey Coastal Waters Forecast For The Florida Keys National Weather Service Key West Fl 1029 Pm Edt Tue Aug 20 2019 Florida Bay...hawk Channel And Straits Of Florida From Ocean Reef To South Of Dry Tortugas...and The Extreme Southeastern Gulf Of Mexico...including The Florida Keys National Marine Sanctuary Seas Are Given As Significant Wave Height...which Is The Average Height Of The Highest 1/3 Of The Waves. Individual Waves May Be More Than Twice The Significant Wave Height. Gmz052>055-072>075-210830- Straits Of Florida From Ocean Reef To Craig Key Out 20 Nm- Straits Of Florida From Craig Key To West End Of Seven Mile Bridge Out 20 Nm- Straits Of Florida From West End Of Seven Mile Bridge To South Of Halfmoon Shoal Out 20 Nm- Straits Of Florida From Halfmoon Shoal To 20 Nm West Of Dry Tortugas Out 20 Nm- Straits Of Florida From Ocean Reef To Craig Key 20 To 60 Nm Out- Straits Of Florida From Craig Key To West End Of Seven Mile Bridge 20 To 60 Nm Out- Straits Of Florida From West End Of Seven Mile Bridge To South Of Halfmoon Shoal 20 To 60 Nm Out- Straits Of Florida From Halfmoon Shoal To 20 Nm West Of Dry Tortugas 20 To 60 Nm Out- 1029 Pm Edt Tue Aug 20 2019
Overnight..East to southeast winds near 15 knots. Seas 3 to 4 feet. Numerous showers and scattered Thunderstorms.
Wednesday and Wednesday night..East winds 10 to 15 knots. Seas 2 to 4 feet. Scattered showers and Thunderstorms.
Thursday..Northeast to east winds 10 to 15 knots. Seas 2 to 4 feet. Scattered showers and Thunderstorms.
Thursday night..East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers and Thunderstorms.
Friday..East winds near 10 knots. Seas 1 to 3 feet. Scattered showers and Thunderstorms.
Friday night..Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers and Thunderstorms.
Saturday..Southeast winds near 10 knots. Seas 1 to 2 feet. Scattered showers and Thunderstorms.
Saturday night and Sunday..Southeast to south winds 5 to 10 knots. Seas 1 to 2 feet. Scattered showers and Thunderstorms.
Sunday night..Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Scattered showers and Thunderstorms.
Overnight..East to southeast winds near 15 knots. Seas 3 to 4 feet. Numerous showers and scattered Thunderstorms.
Wednesday and Wednesday night..East winds 10 to 15 knots. Seas 2 to 4 feet. Scattered showers and Thunderstorms.
Thursday..Northeast to east winds 10 to 15 knots. Seas 2 to 4 feet. Scattered showers and Thunderstorms.
Thursday night..East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers and Thunderstorms.
Friday..East winds near 10 knots. Seas 1 to 3 feet. Scattered showers and Thunderstorms.
Friday night..Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers and Thunderstorms.
Saturday..Southeast winds near 10 knots. Seas 1 to 2 feet. Scattered showers and Thunderstorms.
Saturday night and Sunday..Southeast to south winds 5 to 10 knots. Seas 1 to 2 feet. Scattered showers and Thunderstorms.
Sunday night..Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Scattered showers and Thunderstorms.
7 Day Forecast for Marine Location Near Key Colony Beach, FL
Hourly EDIT Helplocation: 24.7, -81.1 debug
Area Discussion for - Key West, FL
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus62 kkey 210224 afdkey area forecast discussion national weather service key west fl 1024 pm edt Tue aug 20 2019 Discussion Water vapor imagery highlights a weakness in the mid-upper level ridging across the western north atlantic. The center of this tutt-like feature is near bermuda and stretches southwest to west-central cuba. The low-level subtropical ridge reaches west across northern florida. Undulations in the easterlies along the southern flank of the low-level ridge appear to be forming in- situ within a region of favored ascent over the bahamas. The first of these inverted troughs pushed west through the keys last night, the second is forming southeast of andros. Overall shower coverage has been limited since this afternoon, and yet, one slow-moving complex dropped between two two three inches across key west around 400 pm. Our office measured 5.6" after the rains ended, although this total includes an earlier round of heavy rains this morning. Nevertheless, this 12-hr total of 5.6" is around the 10-year average recurrence interval. During this afternoon's rains, radar estimated totals were about 50% of what was realized in the gauges. Tropical rains of this variety are possible overnight as the nocturnal southeasterly convergence zone sets-up over the straits of florida. The most recent kbyx scans highlight increasing coverage over the straits. We upped rain chances to 60% based on the latest radar trends, well below the nbm and ecs guidance. Other elements of the forecast are on track. Marine |
A ridge axis will reach west across northern florida tonight through Saturday night. Meanwhile, a weak trough axis will approach the keys Thursday and press west through the islands Thursday night. The ridge axis will sag south and recede to the east Sunday and Sunday night as lower pressure unsettles the central gulf of mexico Aviation Various boundaries are moving towards the island chain. Currently showers and isolated thunderstorms are forming along these boundaries and moving northwest. Will keep vcsh in the going forecast as confidence is low on exact placement and impacts. This activity could bring brief MVFR or even sub ifr conditions along with gusty winds. Confidence is even lower regarding TS and will omit from the TAF at this time. Otherwise, outside of any convection, expectingVFR conditions with generally SE winds 10 knots or less. Preliminary point temps pops Key west 80 90 81 90 50 50 50 40 marathon 80 92 81 93 50 50 40 40 Key watches warnings advisories Fl... None. Gm... None. Public marine fire... Clr aviation nowcasts... .Liw data collection... ... Dr visit us on the web at weather.Gov key follow us on facebook and twitter at: |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a mapWind History for Vaca Key, FL
(wind in knots) EDIT (on/off) Help| Last 24hr | ||||||||||||||||||||||||
| 1 day ago | ||||||||||||||||||||||||
| 2 days ago |
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 |
| The Florida Keys - Marathon International Airport, FL | 4 mi | 37 min | ESE 4 | 10.00 mi | Fair | 83°F | 73°F | 72% | 1016.7 hPa |
Link to 5 minute data for KMTH
Wind History from MTH (wind in knots)
| 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 | 1 AM | |
| Last 24hr | SE G15 | SE | SE | E | E | SE G15 | E | E | SE | SE | SE | SE | E | E | E G15 | E G15 | E G18 | SE | SE | E | E | S G20 | SE | SE G15 |
| 1 day ago | E | E | E | E | E | E | E | E G17 | E | E G18 | E G17 | E | SE | SE | SE | SE | E | SE | SE | E | E | E | E | E |
| 2 days ago | Calm | E | E | SE | E | E | E | E | E | E | E | E G15 | E | E | E | E | E | E | E | E | E | E | E | E |
Tide / Current Tables for Boot Key Harbor, Vaca Key, Florida
EDIT Weekend mode (on/off) (on/off) Help One Week of DataBoot Key Harbor
Click for Map
Wed -- 12:56 AM EDT 1.88 feet High Tide
Wed -- 07:01 AM EDT Sunrise
Wed -- 07:18 AM EDT 0.59 feet Low Tide
Wed -- 12:02 PM EDT Moonset
Wed -- 01:20 PM EDT 1.68 feet High Tide
Wed -- 07:07 PM EDT 0.72 feet Low Tide
Wed -- 07:53 PM EDT Sunset
Wed -- 11:47 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 12:56 AM EDT 1.88 feet High Tide
Wed -- 07:01 AM EDT Sunrise
Wed -- 07:18 AM EDT 0.59 feet Low Tide
Wed -- 12:02 PM EDT Moonset
Wed -- 01:20 PM EDT 1.68 feet High Tide
Wed -- 07:07 PM EDT 0.72 feet Low Tide
Wed -- 07:53 PM EDT Sunset
Wed -- 11:47 PM EDT 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 |
| 1.8 | 1.9 | 1.8 | 1.5 | 1.2 | 0.9 | 0.7 | 0.6 | 0.6 | 0.8 | 1 | 1.3 | 1.5 | 1.7 | 1.6 | 1.5 | 1.2 | 1 | 0.8 | 0.7 | 0.8 | 0.9 | 1.2 | 1.4 |
Tide / Current Tables for Moser Channel (swingbridge), Florida Current
EDIT (on/off) Help One Week of DataMoser Channel (swingbridge)
Click for Map
Wed -- 12:44 AM EDT 1.19 knots Max Flood
Wed -- 03:41 AM EDT -0.00 knots Slack
Wed -- 07:01 AM EDT Sunrise
Wed -- 07:10 AM EDT -1.71 knots Max Ebb
Wed -- 10:37 AM EDT 0.00 knots Slack
Wed -- 12:02 PM EDT Moonset
Wed -- 01:13 PM EDT 1.29 knots Max Flood
Wed -- 04:31 PM EDT -0.00 knots Slack
Wed -- 07:41 PM EDT -1.43 knots Max Ebb
Wed -- 07:53 PM EDT Sunset
Wed -- 11:05 PM EDT 0.00 knots Slack
Wed -- 11:47 PM EDT Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Wed -- 12:44 AM EDT 1.19 knots Max Flood
Wed -- 03:41 AM EDT -0.00 knots Slack
Wed -- 07:01 AM EDT Sunrise
Wed -- 07:10 AM EDT -1.71 knots Max Ebb
Wed -- 10:37 AM EDT 0.00 knots Slack
Wed -- 12:02 PM EDT Moonset
Wed -- 01:13 PM EDT 1.29 knots Max Flood
Wed -- 04:31 PM EDT -0.00 knots Slack
Wed -- 07:41 PM EDT -1.43 knots Max Ebb
Wed -- 07:53 PM EDT Sunset
Wed -- 11:05 PM EDT 0.00 knots Slack
Wed -- 11:47 PM EDT 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 |
| 1.1 | 1.2 | 0.9 | 0.4 | -0.2 | -0.8 | -1.4 | -1.7 | -1.6 | -1.1 | -0.5 | 0.3 | 0.9 | 1.3 | 1.2 | 0.8 | 0.3 | -0.3 | -0.9 | -1.3 | -1.4 | -1.1 | -0.7 | -0.1 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
GOES Local Image of Southeast 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 Key West, FL (4,6,7,8)
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Ground Weather Radar Station Key West, FL
(on/off) Help
Gulf Stream Current
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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. |