Thursday, August17, 2017 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 6:54AMSunset 7:55PM Thursday August 17, 2017 7:31 AM EDT (11:31 UTC) Moonrise 1:36AMMoonset 3:24PM Illumination 23% Phase: Waning Crescent; Moon at 25 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- 306 Am Edt Thu Aug 17 2017
Today..East southeast winds 5 to 10 knots. Seas around 2 feet. Dominant period 4 seconds. Intracoastal waters a light chop. A chance of showers in the morning. A slight chance of Thunderstorms through the day. A slight chance of showers in the afternoon.
Tonight..East southeast winds 5 to 10 knots along the coast to east southeast 10 to 15 knots in the gulf stream. Seas around 2 feet. Dominant period 3 seconds. Intracoastal waters a moderate chop. A chance of showers and Thunderstorms.
Friday..East southeast winds 10 to 15 knots. Seas around 2 feet. Dominant period 4 seconds. Intracoastal waters a moderate chop. A slight chance of showers. A slight chance of Thunderstorms in the afternoon.
Friday night..East southeast winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 3 seconds. Intracoastal waters a moderate chop. A chance of showers and Thunderstorms.
Saturday..East southeast winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. Showers and Thunderstorms likely.
Saturday night..Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers and Thunderstorms.
Sunday..East southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters a moderate chop. A chance of showers and Thunderstorms.
Sunday night..East southeast winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters choppy in exposed areas. A chance of showers and Thunderstorms.
Monday..East winds around 15 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters a moderate chop. A chance of showers and Thunderstorms.
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- 306 Am Edt Thu Aug 17 2017
Synopsis..High pressure over the region will keep light to moderate east to southeast flow over the coastal waters, as well as the slight chance for showers and Thunderstorms. An upper level low pressure system approaching from the east will bring a higher chance for Thunderstorm activity Saturday into Sunday. Seas are forecast to run less than 2 feet until the weekend, then slowly build to 2 to 4 feet, under a strengthening easterly wind.
Gulf stream hazards..None. The approximate location of the west wall of the gulf stream as of aug 17, 2017 at 1200 utc... 7 nautical miles east of fowey rocks. 11 nautical miles east of port everglades. 11 nautical miles east southeast of lake worth. 14 nautical miles east northeast of jupiter inlet. This data courtesy of the naval oceanographic office.

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


Area Discussion for - Miami-South Florida, FL
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Fxus62 kmfl 170754
afdmfl
area forecast discussion
national weather service miami fl
354 am edt Thu aug 17 2017

Discussion
Latest water vapor imagery shows a large dome of high pressure
dominating the florida peninsula, with little in the way of
synoptic features to note. Surface high pressure continues to sit
stagnant, stretching from the eastern gulf of mexico to the
western atlantic. The mfl 00z mfl sounding displayed light
easterly winds from the surface to above 300 mb with pwat values
just shy of 1.70". As with the past several nights, short range
models indicate mostly dry conditions with a slight chance of
showers over the atlantic waters. Not much change is expected in
the synoptic pattern today, leading to a very similar setup as
yesterday. Light south easterly flow will allow both the atlantic
and gulf sea breezes to develop. These breezes should once again
trigger isolated scattered garden variety showers and
thunderstorms inland from the coasts, moving towards the interior
through the afternoon. Maximum temperatures will range from the
low to mid 90s across the region, a couple degrees warmer than
average for this time of year. On Friday, southeast flow will
continue with a pocket of drier air advecting in from the
southeast. GFS forecast pwat values drop to below 1.50" by the
late afternoon. Thus, expecting less thunderstorms coverage,
especially over the south and eastern portion of the cwa.

Saturday through early next week: on Saturday, both the GFS and
ecmwf agree in pushing an upper level low pressure system towards
south florida from the east. Pwats associated with this feature
are forecast to increase over 2.00" by Saturday afternoon. Deeper
moisture, along with various impulses of positive vorticity
advection, will bring more of a widespread rain threat to the east
coast metro region than previous days. Conditions stay favorable
for elevated shower and thunderstorm activity through Sunday,
before decreasing slightly on Monday. Long range models are
indicating yet another tropical wave to affect south florida late
Tuesday into mid next week, elevating the threat for heavier and
more widespread showers and thunderstorms.

Marine
High pressure over the region will keep light to
moderate east to southeast flow over the coastal waters, as well
as the slight chance for showers and thunderstorms. An upper
level low pressure system approaching from the east will bring a
higher chance for thunderstorm activity Saturday into Sunday.

Seas are forecast to run less than 2 feet until the weekend, then
slowly build to 2 to 4 feet, under a strengthening easterly
wind.

Gulf stream hazards None.

Aviation
Se flow slightly stronger today, allowing east coast
seabreeze to get going 1-2 hours earlier than past few days. This
should also keep bulk of afternoon shra tsra well inland of east
coast sites. Gulf breeze gets going from wsw at kapf after 18z,
with tsra expected to be inland as well. Can't rule out one or two
in vcnty with early seabreeze development, or evening boundaries
pushing back towards coast, but threat to low to mention in any
taf site at this point.

Preliminary point temps pops
West palm beach 93 80 94 80 20 10 20 20
fort lauderdale 92 81 92 82 20 10 30 20
miami 92 81 93 80 20 20 20 20
naples 93 77 94 77 40 40 40 20

Mfl watches warnings advisories
Fl... None.

Am... None.

Gm... None.

Discussion... 27 jt
marine... 27 jt
aviation... 88 alm


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VAKF1 - 8723214 - Virginia Key, FL 2 mi43 min E 6 G 7 85°F 90°F1017.3 hPa
FWYF1 - Fowey Rocks, FL 8 mi31 min E 6 G 7 85°F 86°F1018.3 hPa (+0.3)
PVGF1 - Port Everglades Channel, FL 27 mi37 min Calm G 1.9 84°F 1018.1 hPa72°F
TRRF1 - Taylor River, FL 42 mi151 min 90°F
LMDF1 - Little Madeira, FL 44 mi151 min 92°F
BDVF1 - Broad River, FL 46 mi151 min 85°F
WIWF1 - Willy Willy, FL 47 mi151 min 84°F
NRRF1 47 mi151 min 87°F
LRIF1 48 mi151 min 89°F
TBYF1 48 mi151 min 93°F

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 310.00 miMostly Cloudy85°F75°F72%1018 hPa
Miami, Kendall-Tamiami Executive Airport, FL14 mi38 minSSE 410.00 miMostly Cloudy83°F75°F79%1017.9 hPa
Miami, Opa Locka Airport, FL16 mi38 minE 310.00 miFair81°F79°F94%1018.2 hPa
Homestead Air Reserve Base, FL19 mi93 minN 85.00 miHeavy Rain Fog/Mist78°F76°F95%1017.6 hPa
Hollywood, North Perry Airport, FL21 mi38 minN 310.00 miFair81°F75°F85%1018.4 hPa

Wind History from MIA (wind in knots)
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Last 24hrCalmCalmE4CalmS85
G15
3CalmSE7E11SE8SE8E7SE3CalmSE5SE4E4CalmCalmE5E4CalmN3
1 day agoCalmCalmS3CalmSE103SE9
G15
N8W5SE9SE8SE8SE6SE53SE4W3CalmCalmCalmCalmCalmCalmCalm
2 days agoCalmSW5SW8SE543E11E9S10
G18
S86W4S3S3CalmNE4CalmCalmCalmCalmS4CalmCalmCalm

Tide / Current Tables for Key Biscayne Yacht Club, Biscayne Bay, Florida
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Key Biscayne Yacht Club
Click for Map
Thu -- 12:02 AM EDT     0.36 feet Low Tide
Thu -- 02:36 AM EDT     Moonrise
Thu -- 05:38 AM EDT     2.13 feet High Tide
Thu -- 06:54 AM EDT     Sunrise
Thu -- 12:30 PM EDT     -0.03 feet Low Tide
Thu -- 04:23 PM EDT     Moonset
Thu -- 06:31 PM EDT     2.26 feet High Tide
Thu -- 07:54 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.50.81.31.82.12.11.91.61.10.60.2-000.30.81.41.92.22.221.61.20.7

Tide / Current Tables for Miami Harbor Entrance, Florida Current
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Miami Harbor Entrance
Click for Map
Thu -- 02:29 AM EDT     1.66 knots Max Flood
Thu -- 02:35 AM EDT     Moonrise
Thu -- 06:02 AM EDT     -0.00 knots Slack
Thu -- 06:54 AM EDT     Sunrise
Thu -- 09:42 AM EDT     -1.51 knots Max Ebb
Thu -- 12:28 PM EDT     0.00 knots Slack
Thu -- 04:05 PM EDT     2.03 knots Max Flood
Thu -- 04:23 PM EDT     Moonset
Thu -- 06:59 PM EDT     -0.00 knots Slack
Thu -- 07:54 PM EDT     Sunset
Thu -- 10:42 PM EDT     -1.37 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
01.11.61.61.51.10-0.9-1.3-1.5-1.5-1.3-0.60.71.6221.81.1-0-0.7-1.1-1.3-1.4

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 (7,2,3,4)
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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.