Wednesday, January24, 2018 L-36.com


Marine Weather and Tides
Key Biscayne, FL

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:05AMSunset 6:00PM Wednesday January 24, 2018 2:31 AM EST (07:31 UTC) Moonrise 11:57AMMoonset 12:00AM Illumination 51% Phase: First Quarter Moon; Moon at 7 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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AMZ651 Coastal Waters From Deerfield Beach To Ocean Reef Fl Out 20 Nm- Waters From Deerfield Beach To Ocean Reef Fl From 20 To 60 Nm Excluding The Territorial Waters Of Bahamas- 930 Pm Est Tue Jan 23 2018
Rest of tonight..South southwest winds 5 to 10 knots along the coast to southeast 5 to 10 knots in the gulf stream. Seas around 2 feet. Period 3 seconds. Intracoastal waters a light chop. A chance of showers late in the evening...then a slight chance of showers after midnight.
Wednesday..Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Period 3 seconds. Intracoastal waters a moderate chop. A chance of showers.
Wednesday night..North northeast winds 15 to 20 knots with gusts to around 30 knots. Along the coast, seas 2 to 3 feet. In the gulf stream, seas 2 to 4 feet with occasional seas to 5 feet building to 4 to 6 feet with occasional seas to 8 feet after midnight. Period 4 seconds. Intracoastal waters a moderate chop. A chance of showers.
Thursday..Northeast winds 20 to 25 knots. Seas 3 to 5 feet with occasional seas to 6 feet along the coast and 5 to 7 feet with occasional to 9 feet in the gulf stream. Period 6 seconds. Intracoastal waters rough in exposed areas. A chance of showers in the morning.
Thursday night..East northeast winds 20 to 25 knots along the coast to east northeast 25 to 30 knots in the gulf stream. Along the coast, seas 4 to 6 feet with occasional seas to 8 feet building to 6 to 8 feet with occasional seas to 10 feet after midnight. In the gulf stream, seas 7 to 9 feet with occasional seas to 11 feet. Intracoastal waters very rough in exposed areas.
Friday..East northeast winds around 25 knots. Seas 6 to 8 feet with occasional seas to 10 feet along the coast and 7 to 9 feet with occasional to 11 feet in the gulf stream. Intracoastal waters rough in exposed areas. A slight chance of showers.
Friday night..East winds around 25 knots. Seas 7 to 9 feet with occasional seas to 11 feet. Intracoastal waters rough in exposed areas. A chance of showers.
Saturday..East winds around 20 knots with gusts to around 30 knots along the coast to east 20 to 25 knots in the gulf stream. Seas 6 to 8 feet with occasional seas to 10 feet. Intracoastal waters rough in exposed areas. A slight chance of showers.
Saturday night..East southeast winds 20 to 25 knots. Seas 4 to 6 feet with occasional seas to 8 feet. Intracoastal waters rough in exposed areas. A slight chance of showers.
Sunday..South southeast winds 15 to 20 knots along the coast to southeast 15 to 20 knots in the gulf stream. Seas 3 to 5 feet with occasional seas to 6 feet. Intracoastal waters choppy in exposed areas. A chance of showers.
AMZ600 Synopsis For Jupiter Inlet To Ocean Reef Fl Out To 60 Nm And For East Cape Sable To Bonita Beach Fl Out To 60 Nm- 930 Pm Est Tue Jan 23 2018
Synopsis..A cold front will move through the waters late tonight, with showers lingering behind the front into Wednesday. Hazardous northerly winds are expected to develop along with rough seas Wednesday night into Thursday, then remain strong into the weekend as they turn easterly.
Gulf stream hazards..None. The approximate location of the west wall of the gulf stream as of jan 23, 2018 at 1200 utc... 5 nautical miles northeast of fowey rocks. 3 nautical miles east northeast of port everglades. 10 nautical miles northeast of lake worth. 2 nautical miles southeast of jupiter inlet. This data courtesy of the naval oceanographic office.

7 Day Forecast for Marine Location Near Key Biscayne, FL
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location: 25.7, -80.17     debug


Area Discussion for - Miami-South Florida, FL
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Fxus62 kmfl 240602
afdmfl
area forecast discussion
national weather service miami fl
102 am est Wed jan 24 2018

Aviation Frontal boundary currently over the south florida
region will keep calm to variable wind across the east coast
terminals overnight. CIGS will fluctuate betweenVFR to MVFR
1500-2500 ft for most of the east coast terminals through the
morning hrs. Winds already northerly to the west will gradually
shift nnw after 12z for east coast terminals. Models suggest vcsh
near the east tafs sites by mid morning. Therefore, vcsh has been
included closer to 15z today. Nne shift with winds 10 to 15 knots
expected early Thu and less chance of shra.

Prev discussion issued 727 pm est Tue jan 23 2018
update...

broken line of showers over eastern palm beach extending to
central broward at 720pm moving eastward with lighter more
isolated activity farther south and west. This line of heavier
activity should mostly move into the atlantic by late evening. For
the rest of the night, showers over the southern and eastern
portions of south florida will consist of mainly light to
moderate isolated to scattered activity. Made slight adjustments
to pops based on latest radar and hrrr. Slowed down the rate of
temperatures falling overnight. No change was made to the forecast
low temperatures for Wednesday morning.

Prev discussion... Issued 655 pm est Tue jan 23 2018
aviation... Band of showers with the occasional storm moving into
region this evening just ahead of cold front. Vcsh for all sites
generally through 04z-08z, with storm threat too low to include in
the tafs at this time. Front moving in around same time with winds
becoming light nw. Models suggest prevailing ifr-MVFR CIGS coming
in with front, lingering through most of Wed as front stalls just
to the south. Shra chances expected to return for kfll-ktmb late
morning.

Prev discussion... Issued 429 pm est Tue jan 23 2018
discussion...

short term (this afternoon through Wednesday night): slow moving
cold front is responsible for showers and a few thunderstorms that
have been occurring this afternoon, mainly over northern portions
of south florida, including the lake region. This activity will
be migrating eastward through the early afternoon hours. The cold
front will move through south florida tonight. The air does not
become drier very quickly behind the front. With light winds, i
added patchy fog to the grids for the overnight period. Expect a
chance of showers to persist through Wednesday night, mainly
across southern and eastern portions of south florida.

The cold front has been weakening significantly as it moves
southeastward, so this cold front will not bring air as cold as
the fronts earlier this month. The coldest night will be
Wednesday night, when lows are forecast to range from the upper
40s in glades county to the lower 60s along the southeast beaches.

Medium range (Thursday-Saturday): strong high pressure building
in over the eastern u.S. Behind the front will bring clearing
skies and drier weather for late this week. The main story will
be the very strong pressure gradient and strong winds. Thursday
into Saturday, winds of 20-30 kt with gusts approaching gale force
are forecast for the atlantic waters. Winds will be NE Thursday,
gradually veering to E by late Friday.

Long term (Saturday night through Tuesday):
gfs and ECMWF develop a low pressure trough near the northeastern
gulf of mexico around the Sunday time frame. The models are in a
little better agreement than they had previously been on the
timing for bringing this feature across florida. Increasing
moisture and rain chances are likely for south florida, especially
Sunday afternoon into Monday. Behind the system, somewhat cooler
air can be expected as we head into the middle portion of next
week.

Marine...

a cold front will pass through south florida tonight, with a
chance of showers persisting over the waters into Wednesday night.

Hazardous northerly winds are expected to develop along with rough
seas Wednesday night into Thursday, then remain strong into the
weekend as they turn easterly. For the atlantic waters, seas in
the 7 to 9 foot range, with winds of 20-30 kt and gusts near gale
force will be possible later this week.

Beach forecast...

the rip current risk may increase on atlantic waters by late
Wednesday, and especially on Thursday as breezy north winds
impact the region. The winds will shift to NE on Thursday in
excess on 20 kt and become east on Friday, still over 20 kt. A
high risk of rip currents is likely Friday into Saturday on
atlantic beaches, when the strong winds will be out of the east.

Preliminary point temps pops
West palm beach 74 57 70 61 20 20 0 10
fort lauderdale 76 60 71 63 30 30 10 10
miami 77 61 72 62 30 30 10 10
naples 75 53 73 57 10 10 0 0

Mfl watches warnings advisories
Fl... None.

Am... None.

Gm... None.

Aviation... 67 mt


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VAKF1 - 8723214 - Virginia Key, FL 2 mi49 min SW 1.9 G 1.9 72°F 73°F1018.1 hPa
FWYF1 - Fowey Rocks, FL 8 mi91 min WSW 2.9 G 2.9 72°F 73°F1019.3 hPa (+0.0)
PVGF1 - Port Everglades Channel, FL 27 mi31 min W 1 G 1.9 72°F 1018.2 hPa (-0.7)69°F
LSNF1 - Long Sound, FL 36 mi151 min 74°F
TRRF1 - Taylor River, FL 42 mi151 min 78°F
LMDF1 - Little Madeira, FL 44 mi151 min 74°F
BNKF1 - Butternut Key, FL 46 mi151 min 71°F
BDVF1 - Broad River, FL 46 mi151 min 72°F
NRRF1 47 mi151 min 73°F
WIWF1 - Willy Willy, FL 47 mi151 min 76°F
LRIF1 48 mi151 min 74°F
TBYF1 48 mi151 min 77°F
MLRF1 - Molasses Reef, FL 49 mi91 min N 4.1 G 4.1 73°F 74°F1018.8 hPa (-0.3)

Wind History for Virginia Key, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Miami, Miami International Airport, FL10 mi38 minN 07.00 miPartly Cloudy75°F71°F88%1018.4 hPa
Miami, Kendall-Tamiami Executive Airport, FL14 mi38 minNW 310.00 miOvercast71°F70°F96%1018.4 hPa
Miami, Opa Locka Airport, FL16 mi38 minNW 510.00 miPartly Cloudy71°F70°F96%1018.6 hPa
Homestead Air Reserve Base, FL19 mi35 minN 010.00 miFair70°F70°F100%1018.2 hPa
Hollywood, North Perry Airport, FL21 mi38 minNW 410.00 miPartly Cloudy72°F69°F91%1018.8 hPa

Wind History from MIA (wind in knots)
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Last 24hrE7E6SE7SE6SE6SE6SE7SE12S10S10
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S5S3S3CalmCalmCalmCalm
1 day agoE8E9E9E9E8E8E11SE11SE13
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2 days agoE11N5E12E7E11E10E12E9E10E11E9E12E11E12E11E11E12E9E10E10E9E11E11E10

Tide / Current Tables for Key Biscayne Yacht Club, Biscayne Bay, Florida
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Key Biscayne Yacht Club
Click for Map
Wed -- 02:02 AM EST     1.77 feet High Tide
Wed -- 07:07 AM EST     Sunrise
Wed -- 08:37 AM EST     0.17 feet Low Tide
Wed -- 11:57 AM EST     Moonrise
Wed -- 02:16 PM EST     1.79 feet High Tide
Wed -- 05:20 PM EST     First Quarter
Wed -- 05:58 PM EST     Sunset
Wed -- 09:08 PM EST     -0.07 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.31.61.81.71.41.10.70.40.20.20.40.81.21.61.81.71.51.20.70.30.1-0.100.3

Tide / Current Tables for Miami Harbor Entrance, Florida Current
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Miami Harbor Entrance
Click for Map
Wed -- 02:41 AM EST     -0.00 knots Slack
Wed -- 04:44 AM EST     -1.24 knots Max Ebb
Wed -- 07:07 AM EST     Sunrise
Wed -- 08:50 AM EST     0.00 knots Slack
Wed -- 11:14 AM EST     1.82 knots Max Flood
Wed -- 11:57 AM EST     Moonrise
Wed -- 02:53 PM EST     -0.00 knots Slack
Wed -- 05:07 PM EST     -1.46 knots Max Ebb
Wed -- 05:20 PM EST     First Quarter
Wed -- 05:58 PM EST     Sunset
Wed -- 09:20 PM EST     0.00 knots Slack
Wed -- 11:46 PM EST     1.94 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.71.30.7-0.3-1.1-1.2-1-0.8-0.50.11.21.81.61.30.8-0.1-1.1-1.5-1.3-1.1-0.8-0.30.71.7

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Miami-South Florida, FL (2,6,7,8)
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Ground Weather Radar Station Miami, FL
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weather_mapweather_map weather_map

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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.