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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 6:58AM | Sunset 7:50PM | Saturday August 24, 2019 7:16 AM EDT (11:16 UTC) | Moonrise 12:04AM | Moonset 1:47PM | Illumination 36% |  |
GMZ042 Hawk Channel From Ocean Reef To Craig Key Out To The Reef- 429 Am Edt Sat Aug 24 2019
Today..South to southwest winds 10 to 15 knots. Seas 2 to 3 feet. NEarshore waters a light to moderate chop. Scattered showers and isolated Thunderstorms.
Tonight..Southwest winds 10 to 15 knots, decreasing to near 10 knots. Seas around 1 to 3 feet, subsiding to 1 to 2 feet. NEarshore waters a light to moderate chop, becoming a light chop. Scattered showers and isolated Thunderstorms.
Sunday..Southwest winds 10 to 15 knots. Seas 1 to 3 feet. NEarshore waters a light to moderate chop. Scattered showers and isolated Thunderstorms.
Sunday night..South winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Scattered showers and isolated Thunderstorms.
Monday..South to southwest winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms.
Monday night and Tuesday..Variable winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms.
Tuesday night through Wednesday night..Mainly west winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms.
Today..South to southwest winds 10 to 15 knots. Seas 2 to 3 feet. NEarshore waters a light to moderate chop. Scattered showers and isolated Thunderstorms.
Tonight..Southwest winds 10 to 15 knots, decreasing to near 10 knots. Seas around 1 to 3 feet, subsiding to 1 to 2 feet. NEarshore waters a light to moderate chop, becoming a light chop. Scattered showers and isolated Thunderstorms.
Sunday..Southwest winds 10 to 15 knots. Seas 1 to 3 feet. NEarshore waters a light to moderate chop. Scattered showers and isolated Thunderstorms.
Sunday night..South winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Scattered showers and isolated Thunderstorms.
Monday..South to southwest winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms.
Monday night and Tuesday..Variable winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms.
Tuesday night through Wednesday night..Mainly west winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms.
7 Day Forecast for Marine Location Near "Islamorada, Village of Islands ", FL
Hourly EDIT Helplocation: 25, -80.53 debug
Area Discussion for - Miami-South Florida, FL
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus62 kmfl 240653 afdmfl area forecast discussion national weather service miami fl 253 am edt Sat aug 24 2019 Discussion The main story for the weekend is the area of low pressure sitting over south florida. While it is tropical in nature, no significant development is forecast while the low is over the area. Models show the low meandering around the area for the next 24 to 36 hours, bringing increased chances for showers and thunderstorms. However, given the tropical nature, and 500mb temperatures around -5.5c to -6c, would expect the lightning to be fairly limited today in count, but still possible. The GFS is showing plenty of surface based CAPE today, with values ranging from around 900 j kg to well over 2000 j kg, varying spatially and temporally. The GFS is showing the pwats to exceed 2 inches, and may be near 2.5 inches at times. This would bring heavy rain to the area, which may also bring some localized flooding, mainly in the urban areas where streets may flood due to poor drainage and in low laying areas. The low should begin to move off to the northeast sometime on Sunday, and could possibly develop into a tropical system once it leaves the area and the center returns to the marine environment. However, both the GFS and the ECMWF are hinting at the system perhaps being a hybrid, with a training cold front behind it. This is seen in the surface wind fields, with a wind shift along a boundary from the gulf waters, through the ft myers area, to the western edge of lake okeechobee, and northeast through the vero beach area. This boundary may act as a focus for some convection on Sunday, especially in the lake region. By Sunday night, the boundary become diffuse and the wind becomes more uniform out of the southwest. As the system departs the area, the GFS and the ECMWF diverge as to what type of weather to expect. The ECMWF keeps showers and storms over the area, even with a surface high building, as well as a 500mb ridge. The GFS has similar features, but is drier for the beginning of the week, with what appears to be a dry slot behind the developing system. For now, kept Monday afternoon as fairly active with showers and thunderstorms, and backed off on pops for Tuesday, but still have a chance of convection, mainly in the afternoon. By the middle of the week, the models show a 500mb trough digging into the southeast us, with the main low pressure system well to the north, over the hudson bay. Both the GFS and ECMWF show a very long cold front moving into north florida during the latter half |
of the week, helping to bring additional instability to the area, as well as keeping moisture in place. Both models are also hinting that another surface low may develop over the region, along the stalled frontal boundary. This would help to enhance convective activity for Thursday and Friday. For now, kept pops in the chance range. Temperature wise, the models are coming in with seasonable temps through the forecast period, with highs around 90 and lows in the mid to upper 70s. Marine A low pressure system, sitting over south florida, will keep the winds generally out of the south for the atlantic waters, and northerly for the gulf today. As the system begins to exit the area on Sunday, the wind should eventually become more uniform out of the southwest across the area. The low will keep chances for showers and thunderstorms over all south florida waters through the weekend, and into the beginning of the week. Some of the showers and storms may bring locally rough marine conditions as well as a moderate risk for waterspouts this weekend, and possibly Monday. Otherwise, seas are forecast to be generally one to two feet through the forecast period, with seas increasing to around three feet in the offshore atlantic periodically through the week. Aviation Tropical disturbance is producing periods of showers moving onshore from the atlantic with vcsh at all terminals. Shra that do move over the terminals may bring brief MVFR ifr vis and cigs, handled with amendments. Winds will be southerly, except kapf where gulf breeze will develop in afternoon, around 10 knots today with showers and storms in the vicinity throughout the day. Winds will be come S SW overnight with showers remaining in the taf. Preliminary point temps pops West palm beach 87 78 91 77 70 40 60 30 fort lauderdale 86 79 90 78 60 40 60 30 miami 86 79 90 78 60 40 50 30 naples 87 79 88 78 50 30 40 30 Mfl watches warnings advisories Fl... None. Am... None. Gm... None. Discussion... 13 marine... 13 aviation... 33 kelly |
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 | 33 mi | 23 min | WSW 3 | 10.00 mi | Overcast | 82°F | 78°F | 88% | 1013 hPa |
Link to 5 minute data for KMTH
Wind History from MTH (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 | N | N | N | N | N | N | W | NW | NW | E | NW | W | W | SW | S | SW | ||||||||
| 1 day ago | Calm | N | N | NW | NE | NE | NE | N | ||||||||||||||||
| 2 days ago | E | SE | SE | SW | S | SE | E | E | E | E |
Tide / Current Tables for Tavernier Creek, Hwy. 1 bridge, Hawk Channel, Florida
EDIT Weekend mode (on/off) (on/off) Help One Week of DataTavernier Creek
Click for Map
Sat -- 01:04 AM EDT Moonrise
Sat -- 03:28 AM EDT 1.28 feet High Tide
Sat -- 06:59 AM EDT Sunrise
Sat -- 10:03 AM EDT 0.20 feet Low Tide
Sat -- 02:46 PM EDT Moonset
Sat -- 04:27 PM EDT 1.33 feet High Tide
Sat -- 07:48 PM EDT Sunset
Sat -- 10:40 PM EDT 0.42 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 01:04 AM EDT Moonrise
Sat -- 03:28 AM EDT 1.28 feet High Tide
Sat -- 06:59 AM EDT Sunrise
Sat -- 10:03 AM EDT 0.20 feet Low Tide
Sat -- 02:46 PM EDT Moonset
Sat -- 04:27 PM EDT 1.33 feet High Tide
Sat -- 07:48 PM EDT Sunset
Sat -- 10:40 PM EDT 0.42 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 |
| 0.7 | 0.9 | 1.1 | 1.3 | 1.3 | 1.1 | 0.9 | 0.7 | 0.4 | 0.3 | 0.2 | 0.3 | 0.4 | 0.7 | 1 | 1.2 | 1.3 | 1.3 | 1.2 | 1 | 0.8 | 0.6 | 0.4 | 0.4 |
Tide / Current Tables for Long Key, east of drawbridge, Florida Current
EDIT (on/off) Help One Week of DataLong Key
Click for Map
Sat -- 12:48 AM EDT 0.00 knots Slack
Sat -- 01:05 AM EDT Moonrise
Sat -- 03:15 AM EDT 0.57 knots Max Flood
Sat -- 06:19 AM EDT -0.00 knots Slack
Sat -- 07:00 AM EDT Sunrise
Sat -- 09:49 AM EDT -1.10 knots Max Ebb
Sat -- 01:23 PM EDT 0.00 knots Slack
Sat -- 02:47 PM EDT Moonset
Sat -- 04:27 PM EDT 0.93 knots Max Flood
Sat -- 07:49 PM EDT Sunset
Sat -- 08:16 PM EDT -0.00 knots Slack
Sat -- 10:49 PM EDT -0.73 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sat -- 12:48 AM EDT 0.00 knots Slack
Sat -- 01:05 AM EDT Moonrise
Sat -- 03:15 AM EDT 0.57 knots Max Flood
Sat -- 06:19 AM EDT -0.00 knots Slack
Sat -- 07:00 AM EDT Sunrise
Sat -- 09:49 AM EDT -1.10 knots Max Ebb
Sat -- 01:23 PM EDT 0.00 knots Slack
Sat -- 02:47 PM EDT Moonset
Sat -- 04:27 PM EDT 0.93 knots Max Flood
Sat -- 07:49 PM EDT Sunset
Sat -- 08:16 PM EDT -0.00 knots Slack
Sat -- 10:49 PM EDT -0.73 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 |
| -0.3 | 0.1 | 0.4 | 0.6 | 0.5 | 0.3 | 0.1 | -0.2 | -0.7 | -1 | -1.1 | -0.9 | -0.6 | -0.2 | 0.3 | 0.7 | 0.9 | 0.9 | 0.8 | 0.5 | 0.1 | -0.3 | -0.7 | -0.7 |
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 Miami-South Florida, FL (7,2,3,4)
(on/off) Help
Ground Weather Radar Station Miami, 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. |