Wednesday, January27, 2021
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Marine Weather and Tides
Islandia, FL

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:52AMSunset 5:51PM Wednesday January 27, 2021 8:38 PM EST (01:38 UTC) Moonrise 4:53PMMoonset 6:05AM Illumination 100% Phase: Full Moon; Moon at 15 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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AMZ117 Bahamas Including Cay Sal Bank- 342 Pm Est Wed Jan 27 2021
Tonight..SE winds 10 kt. Seas 2 to 4 ft atlc exposures, and 3 ft or less elsewhere.
Thu..W to nw winds 10 to 15 kt, becoming nw 25 to 30 kt in the afternoon. Atlc exposures, seas 2 to 4 ft, building to 4 to 6 ft in the afternoon. Elsewhere, seas 3 ft or less, building to 2 to 4 ft in the afternoon.
Thu night..N to ne winds 20 to 25 kt. Seas 6 to 9 ft atlc exposures, and 3 to 5 ft elsewhere.
Fri..NE winds 15 to 20 kt. Seas 7 to 10 ft atlc exposures, and 3 to 5 ft elsewhere.
Fri night..NE winds 15 to 20 kt. Seas 3 to 5 ft.
Sat..NE to E winds 15 to 20 kt. Seas 4 to 6 ft.
Sat night..E winds 15 to 20 kt. Seas 4 to 6 ft.
Sun..E to se winds 10 to 15 kt. Seas 3 to 5 ft.
Sun night..SE winds 10 to 15 kt. Seas 3 to 5 ft.
Mon..S to sw winds 15 to 20 kt. Seas 3 to 5 ft.
Mon night..SW to W winds 20 to 25 kt. Seas 2 to 4 ft.


7 Day Forecast for Marine Location Near Islandia, FL
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location: 25, -77.5     debug


Area Discussion for - Miami-South Florida, FL
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FXUS62 KMFL 280014 AFDMFL

Area Forecast Discussion National Weather Service Miami FL 714 PM EST Wed Jan 27 2021

AVIATION(00Z TAFS). An approaching cold front is forecast to bring possible IFR conditions tonight. A light SW wind may allow for fog to develop, mainly in the western half, but it could affect some of the eastern areas of South Florida as well. Also, the front may push some lower CIGs into the area. It is very uncertain as to how low or what the coverage of lower CIGs will be. Behind the front, while skies will clear, the wind is forecast to be northerly and gusty, especially near the coasts.

UPDATE. The cold front is still moving towards the area. Models are hinting there may be a few showers with the front, as well as some lower ceilings. But, mainly it should be a dry passage with gusty wind behind the front. Fog is still possible across much of the interior ahead of the front, but it should be pushed to the south through the night, as the front moves through. no significant changes with this update. Just adjustments to PoPs and fog locations updated to reflect model trends.

PREV DISCUSSION. (Issued 238 PM EST Wed Jan 27 2021)

SHORT TERM . An elongated ridge of high pressure over the western Atlantic Ocean continues to have a strong influence on the weather pattern for South Florida, with the orientation of the ridge allowing for southerly low-level flow across the region. The combination of warm air advection and subsidence aloft is allowing for near record high maximum temperatures, with low/mid 80s expected or already present over most locations.

A strong cold front will approach the region tonight. Winds ahead of the front will veer out of the west/northwest, then eventually northwest/north by tomorrow. In terms of convective impacts, this front is likely to be uneventful. This is mainly due to very weak upper level forcing and a lack of moisture within the boundary layer. Correspondingly, ML CAPE values will likely be below 1000 J/kg across all the area, and low-level convergence will be lackluster. A few showers and possibly an isolated thunderstorm could develop over the Gulf waters and locally higher wind gusts could be present in a favorable mesoscale environment, but high end impacts do not appear likely at this time.

As the front passes through the region Thursday, temperatures will drop, with maximum temperatures in a more seasonable range of 70-77 across South Florida. It will be quite breezy over the Atlantic metro region tomorrow, with a strong fetch of northerly winds accompanying the aforementioned cold front. A Wind Advisory for this area does not appear necessary at this time, however this may be revisited as the event materializes.

LONG TERM (Friday through Tuesday night) .

A mid-level ridge with high pressure developing across the eastern CONUS. A cooler start to the weekend with gradually moderating temperatures as we move throughout the weekend. This is due to winds from NNE to easterly to southerly by Sunday. As we move throughout the weekend high temperatures will be 70s, to mid 70s to upper 70s by Sunday. We will remain dry throughout the weekend with gradually improving marine conditions as well.

As we move into early next week another trough will be digging across the central US with another low-pressure system moving through the Mid-Atlantic towards the end of the weekend into early next week. This will bring another cold front through the region with a slight increase in the chance of showers with the frontal passage on Monday.

High pressure will build over the northern gulf of Mexico with cooler and drier air moving down the Florida peninsula. This front looks like it will bring colder air then the front moving through the area overnight tonight/Thursday. Cool temps in the 40s and low 50s for Tuesday and Wednesday morning. We will continue to monitor the timing with the frontal passage for early next week.

MARINE . Relatively benign boating conditions will worsen with an approaching cold front. Strong northerly flow will accompany the front and allow for increasing seas and swell. This is especially the case over the Atlantic waters, where wave heights may reach 7-10 ft owing to a persistent fetch of northerly winds over the Atlantic waters. Gusts are also forecast to approach/slightly exceed gale force criteria during the afternoon/evening hours Thursday over the outer Atlantic waters. Conditions should temper a bit Friday and into the weekend, however hazardous conditions for smaller craft may still linger.

FIRE WEATHER . A cold front is forecast to approach the region Wednesday night/Thursday morning and may bring fire weather concerns to the area. A northerly wind of around 15 mph over most of the area. Relative humidity are forecast to be in the low to mid 30s for the western half of the area. The eastern half is forecast to be in the upper 30s to around 40 percent Thursday afternoon. The wind and relative humidity may cause erratic fire behavior any fires that may ignite on Thursday, especially for Glades, Hendry and Collier counties. However, the ERCs are still below criteria and do not support a change to the fire weather headlines at this time.

BEACHES . With mostly weak southerly flow, rip currents are not a hazard of concern for today. This will quickly change Thursday however with a cold front moving through the region. Strong, north/northeast winds of 15-25 kt will present hazardous beach conditions, mainly along the Palm Beach County coastline where the strongest winds and greatest shore perpendicular component of wind exists.

PRELIMINARY POINT TEMPS/POPS. Miami 67 76 58 72 / 10 20 10 0 West Kendall 65 77 55 72 / 10 10 0 0 Opa-Locka 65 75 56 71 / 10 20 10 0 Homestead 65 77 55 72 / 10 10 0 0 Fort Lauderdale 66 75 58 72 / 10 10 10 0 N Ft Lauderdale 66 74 58 70 / 10 10 10 0 Pembroke Pines 66 76 56 72 / 10 10 10 0 West Palm Beach 65 73 57 69 / 20 20 10 0 Boca Raton 65 74 58 71 / 20 20 10 0 Naples 63 73 48 71 / 20 0 0 0

MFL WATCHES/WARNINGS/ADVISORIES. FL . Fire Weather Watch from Thursday morning through Thursday evening for FLZ063-066>075-174.

AM . Small Craft Advisory from 1 AM Thursday to 10 AM EST Saturday for AMZ630-650-651.

Gale Watch from 7 AM EST Thursday through Thursday evening for AMZ670-671.

Small Craft Advisory from 1 AM to 7 AM EST Thursday for AMZ670- 671.

Small Craft Advisory from 10 PM Thursday to 10 AM EST Saturday for AMZ670-671.

GM . Small Craft Advisory from 1 AM Thursday to 1 PM EST Friday for GMZ656-657-676.



Update/Aviation . 13 Tonight/Thursday and Marine . Bhatti Thursday Night through Wednesday . Kelly

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Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for KHST

Wind History from HST (wind in knots)
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Last 24hr--SE8--SE3CalmSE3CalmCalm----Calm--CalmCalmCalmCalmCalmCalmSE7SE7--SE7--S8
1 day ago----E3E3--CalmCalmCalmCalmCalmCalm--CalmE3--CalmCalmE6SE7SE11E11
G18
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G17
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2 days ago------------------------------------------E8----

Tide / Current Tables for Nassau, New Providence Island, Bahamas
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Nassau
Click for Map
Wed -- 12:14 AM EST     0.06 feet Low Tide
Wed -- 06:04 AM EST     Moonset
Wed -- 06:46 AM EST     2.96 feet High Tide
Wed -- 06:53 AM EST     Sunrise
Wed -- 01:08 PM EST     0.01 feet Low Tide
Wed -- 04:52 PM EST     Moonrise
Wed -- 05:50 PM EST     Sunset
Wed -- 07:08 PM EST     2.34 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.10.51.11.82.42.932.72.11.40.70.200.10.51.11.72.12.32.21.81.20.6

Tide / Current Tables for Nassau, New Providence Island, Bahamas (2)
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Nassau
Click for Map
Wed -- 12:02 AM EST     0.59 feet Low Tide
Wed -- 06:04 AM EST     Moonset
Wed -- 06:36 AM EST     3.46 feet High Tide
Wed -- 06:53 AM EST     Sunrise
Wed -- 01:00 PM EST     0.66 feet Low Tide
Wed -- 04:52 PM EST     Moonrise
Wed -- 05:50 PM EST     Sunset
Wed -- 06:54 PM EST     2.91 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.71.21.82.53.13.43.43.22.61.91.30.80.70.81.21.82.42.82.92.72.31.61

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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 numerous 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.