Thursday, October19, 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 7:21AMSunset 6:50PM Thursday October 19, 2017 11:24 PM EDT (03:24 UTC) Moonrise 6:07AMMoonset 6:06PM Illumination 0% Phase: New Moon; Moon at 29 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- 925 Pm Edt Thu Oct 19 2017
.small craft should exercise caution...
Rest of tonight..East northeast winds around 15 knots. Seas 3 to 5 feet with occasional seas to 6 feet. Period 8 seconds. Intracoastal waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Friday..East northeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas to 6 feet. Period 6 seconds. Intracoastal waters choppy in exposed areas. A chance of showers and a slight chance of Thunderstorms.
Friday night..East winds 15 to 20 knots with gusts to around 30 knots. Seas 5 to 7 feet with occasional seas to 9 feet. Period 5 seconds. Intracoastal waters choppy in exposed areas. A chance of showers and a slight chance of Thunderstorms.
Saturday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas to 8 feet. Period 5 seconds. Intracoastal waters choppy in exposed areas. Showers likely and a slight chance of Thunderstorms.
Saturday night..East southeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas to 6 feet. Intracoastal waters choppy in exposed areas. Showers likely in the evening. A slight chance of Thunderstorms through the night. A chance of showers after midnight.
Sunday and Sunday night..East southeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas to 6 feet. Intracoastal waters choppy in exposed areas. A chance of showers and a slight chance of Thunderstorms.
Monday..East southeast 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 a slight chance of Thunderstorms.
Monday night..South southeast winds 10 to 15 knots along the coast to southeast around 15 knots in the gulf stream. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Tuesday..South winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters a light chop. A chance of showers and a slight chance of 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- 925 Pm Edt Thu Oct 19 2017
Synopsis..Winds will be northeasterly around 10 kts in the atlantic waters and 15 kts in the gulf waters through tonight as a slow moving frontal boundary lingers over the region. Winds will be increasing to around 20 kts by Friday. Seas of 5 to 7 feet in the atlantic waters will persist through the rest of the week and into the first part of the weekend.
Gulf stream hazards.. Seas will below 7 feet today into Friday before rebuilding to 6 to 8 feet Friday night into the weekend. The approximate location of the west wall of the gulf stream as of oct 19, 2017 at 1200 utc... 7 nautical miles southeast of fowey rocks. 9 nautical miles southeast of port everglades. 8 nautical miles northeast of lake worth. 6 nautical miles east 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 200034
afdmfl
area forecast discussion
national weather service miami fl
834 pm edt Thu oct 19 2017

Aviation
Through early Friday morning, low level moisture will continue to
stream southwestward from the atlantic and across the peninsula.

Expect vcsh conds through this period, esepcailly south of kpbi.

Tonight, northeast winds will be light, less than 8 kt. Aft
20 1500z, east northeast winds will become breezy again,
sustained 12-15 kt with occasional higher gusts. Decreasing
moisture will lead to drier conditions tomorrow with only isolated
showers.

Prev discussion issued 747 pm edt Thu oct 19 2017
update...

radar and satellite data show most of the shower activity
happening south of a line from naples to boca raton, which is
associated with a lingering frontal boundary located near the
florida keys. Pops wx will be adjusted to reflect this trend, but
still keeping low-end chances of rain for palm beach county
through the rest of this evening.

A drier pattern should establish Friday as the frontal boundary
continues to dissipate, although there will be enough remnant
moisture for another round of afternoon showers.

Rest of the forecast looks good and no further changes are
required for the evening update.

Prev discussion... Issued 405 pm edt Thu oct 19 2017
discussion...

short term (tonight-Saturday)... Satellite and model data depict a
lingering stationary frontal near the florida keys, and keeping a
large swath of enhanced moisture across south florida. Not much
so far in terms of heavy rain, but there are scattered small cells
moving NE to sw, bringing brief periods of moderate rain at
times. This shower activity will continue through Friday, although
a decrease in activity is expected later tonight. A few brief
thunderstorms are also possible.

Expect scattered showers and isolated thunderstorms each day,
with best chances during the afternoon hours. Temperatures
should remain near normal values. Current moderate N NE winds will
gradually veer to the ene starting Friday and through Saturday as
high pressure starts building across the region in the wake of the
fropa.

Long term (Saturday night-Wednesday)... Strong high pressure is
shown by the models building across the western atlantic and the
se states Sunday and Monday, with tighter pressure gradients
resulting in periods breezy winds. These winds will become mainly
easterly early next week.

Global model solutions show another trough deepening over the
eastern half of the us, sending an associated cold front into
florida by Tuesday. Expect an increase in atmospheric moisture
early next week as winds become SE and then S as the cold front
approaches. Models agree in pushing the front into the florida
keys by Wednesday. This front may finally bring a significant
change in temperatures, with cooler conditions and lowering dew
points. In other words, the first days of fall-like weather.

Marine...

n NE winds continue during the next few days, with speeds to 20
kts on Friday. Winds will become more easterly later in the
weekend but will remain breezy through the weekend. Seas in the
atlantic waters will be up to 5 to 7 feet for the rest of the week
and into the first part of the weekend.

Beach forecast...

stronger ne-e winds for the upcoming weekend may combine with high
astronomical tides, bringing water levels along the east coast
to near coastal flood criteria. A coastal flood advisory remains
in effect for palm beach county through Saturday. This may need
to be extended southward to include broward and miami- dade later
this week if conditions warrant.

Preliminary point temps pops
West palm beach 76 86 81 86 30 40 40 50
fort lauderdale 78 87 80 86 50 40 50 50
miami 77 89 79 87 40 40 50 50
naples 74 91 75 90 20 30 10 50

Mfl watches warnings advisories
Fl... Coastal flood advisory until 8 pm edt Saturday for flz168.

Am... Small craft advisory for hazardous seas until 8 pm edt Saturday
for amz650-670.

Gm... Small craft advisory until 10 am edt Friday for gmz676.

Update... 17 ar
discussion... 17 ar
marine... 17 ar
aviation... 27 jt
beach forecast... 17 ar


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VAKF1 - 8723214 - Virginia Key, FL 2 mi55 min NNE 13 G 18 81°F 84°F1016.7 hPa
FWYF1 - Fowey Rocks, FL 8 mi85 min ENE 24 G 28 81°F 83°F1017.3 hPa (+1.6)
PVGF1 - Port Everglades Channel, FL 27 mi43 min NE 17 G 22 82°F 1016.9 hPa73°F
LSNF1 - Long Sound, FL 36 mi145 min 85°F
TRRF1 - Taylor River, FL 42 mi145 min 85°F
LMDF1 - Little Madeira, FL 44 mi145 min 86°F
BNKF1 - Butternut Key, FL 46 mi145 min 84°F
BDVF1 - Broad River, FL 46 mi145 min 83°F
NRRF1 47 mi145 min 83°F
WIWF1 - Willy Willy, FL 47 mi145 min 85°F
LRIF1 48 mi145 min 85°F
TBYF1 48 mi145 min 85°F
MLRF1 - Molasses Reef, FL 49 mi85 min E 19 G 21 79°F 84°F1016.3 hPa (+1.5)

Wind History for Virginia Key, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Miami, Miami International Airport, FL10 mi32 minENE 810.00 miOvercast81°F75°F82%1017.2 hPa
Miami, Kendall-Tamiami Executive Airport, FL14 mi32 minNNE 510.00 miOvercast77°F73°F90%1017.3 hPa
Miami, Opa Locka Airport, FL16 mi32 minENE 810.00 miPartly Cloudy78°F75°F90%1017.5 hPa
Homestead Air Reserve Base, FL19 mi27 minNE 129.00 miLight Rain79°F75°F90%1017.2 hPa
Hollywood, North Perry Airport, FL21 mi32 minNE 910.00 miPartly Cloudy81°F73°F77%1017.7 hPa

Wind History from MIA (wind in knots)
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Last 24hrN5N4N3NW33N4CalmN4N4N4NE4E7E9E9E10E9NE9NE8E10
G17
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1 day agoN4CalmN3N4N5SE3N3CalmCalmN5NE5NE7NE7N5E7N6NE6NE7NE7NE7NE7NE6NE4Calm
2 days agoCalmCalmCalmCalmCalmCalmN3N3Calm34NE54E9E11
G17
E145E10E10E11NE8NE5NE4NE4

Tide / Current Tables for Key Biscayne Yacht Club, Biscayne Bay, Florida
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Key Biscayne Yacht Club
Click for Map
Thu -- 04:00 AM EDT     0.25 feet Low Tide
Thu -- 07:06 AM EDT     Moonrise
Thu -- 07:21 AM EDT     Sunrise
Thu -- 09:48 AM EDT     2.79 feet High Tide
Thu -- 03:12 PM EDT     New Moon
Thu -- 04:25 PM EDT     0.42 feet Low Tide
Thu -- 06:49 PM EDT     Sunset
Thu -- 07:06 PM EDT     Moonset
Thu -- 09:59 PM EDT     2.68 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.91.30.80.40.20.40.91.62.22.72.82.62.21.71.10.70.40.50.81.422.52.72.5

Tide / Current Tables for Miami Harbor Entrance, Florida Current
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Miami Harbor Entrance
Click for Map
Thu -- 01:36 AM EDT     -1.87 knots Max Ebb
Thu -- 03:49 AM EDT     0.01 knots Slack
Thu -- 07:06 AM EDT     Moonrise
Thu -- 07:21 AM EDT     Sunrise
Thu -- 07:26 AM EDT     2.36 knots Max Flood
Thu -- 10:10 AM EDT     -0.00 knots Slack
Thu -- 02:01 PM EDT     -1.82 knots Max Ebb
Thu -- 03:12 PM EDT     New Moon
Thu -- 04:15 PM EDT     0.01 knots Slack
Thu -- 06:48 PM EDT     Sunset
Thu -- 07:05 PM EDT     Moonset
Thu -- 07:43 PM EDT     2.11 knots Max Flood
Thu -- 10:18 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.4-1.8-1.8-1.10.31.422.32.21.40.2-0.6-1.2-1.6-1.8-1.5-0.30.91.722.11.50.3-0.6

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 (23,6,7,8)
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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.