Tuesday, September17, 2019 L-36.com


Marine Weather and Tides
Key Biscayne, FL

Version 3.4
NOTICE
9/4/2019 Fixed the weather maps due to NOAA moving them.
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 7:06AMSunset 7:24PM Tuesday September 17, 2019 7:24 AM EDT (11:24 UTC) Moonrise 8:43PMMoonset 8:55AM Illumination 89% Phase: Waning Gibbous; Moon at 18 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- 256 Am Edt Tue Sep 17 2019
.small craft advisory in effect through Saturday evening...
Today..North winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas to 8 feet. Period 9 seconds. North northeast swell 3 to 4 feet becoming 4 feet in the afternoon. Intracoastal waters a light chop. Slight chance of showers and Thunderstorms
Tonight...north northeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas to 8 feet. Period 9 seconds. North northeast swell 3 feet in the evening. Intracoastal waters a light chop. Slight chance of Thunderstorms in the evening. Chance of showers through the night. Chance of Thunderstorms after midnight.
Wednesday..North northeast winds 10 to 15 knots with gusts to around 25 knots. Seas 3 to 5 feet with occasional seas to 6 feet. Period 7 seconds. Intracoastal waters a moderate chop. Chance of showers.
Wednesday night..Northeast 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. Slight chance of showers in the evening.
Thursday..Northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas to 8 feet. Intracoastal waters choppy in exposed areas. Chance of showers. Slight chance of Thunderstorms in the afternoon.
Thursday night..East northeast winds around 20 knots with gusts to around 30 knots. Seas 5 to 7 feet with occasional seas to 9 feet. Intracoastal waters choppy in exposed areas. Slight chance of Thunderstorms in the evening. Chance of showers through the night.
Friday..East northeast winds 20 to 25 knots. Seas 5 to 7 feet with occasional seas to 9 feet. Intracoastal waters rough in exposed areas. Chance of showers. Chance of Thunderstorms in the afternoon.
Friday night..East northeast winds 20 to 25 knots with gusts to around 35 knots. Seas 6 to 8 feet with occasional seas to 10 feet. Intracoastal waters rough in exposed areas. Chance of Thunderstorms in the evening. Showers likely through the night. Slight chance of Thunderstorms after midnight.
Saturday..East northeast winds around 20 knots with gusts to around 30 knots. Seas 5 to 7 feet with occasional seas to 9 feet. Intracoastal waters choppy in exposed areas. Showers likely and 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- 256 Am Edt Tue Sep 17 2019
Synopsis.. SWells produced by hurricane humberto in the atlantic will cause hazardous marine conditions to continue through at least end of the week. Showers and Thunderstorms continue to be possible through the week.
Gulf stream hazards..Northerly swell will allow for 7 foot seas today building to around 10 feet by Tuesday. The approximate location of the west wall of the gulf stream as of sep 14, 2019 at 1200 utc... 11 nautical miles southeast of fowey rocks. 14 nautical miles east southeast of port everglades. 7 nautical miles east southeast of lake worth. 9 nautical miles 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 170746 cca
afdmfl
area forecast discussion
national weather service miami fl
343 am edt Tue sep 17 2019

Discussion
Today and tonight...

n-nw flow will prevail aloft as south florida is located between
upper ridging over the southern gulf of mexico and residual
troughing in the wake of hurricane humberto over the western
atlantic. Mid-level subsidence wrapping around the back side of the
tropical system will push south into our area this morning and will
remain in place through the short-term period. This will serve as a
limiting factor for shower and thunderstorm development today,
although can't rule out a low end chance over eastern portions of
our area as northeast low-level winds associated with the atlantic
sea breeze allow for some localized convergence leading to possible
development around the east coast metro areas during the afternoon
and evening. With the easterly wind component, the east coast
metro areas will be a bit cooler than on Monday, but all portions
of our area (away from the immediate coasts) should once again
top out in the 90s. The somewhat drier air should allow interior
lows to dip into the lower to mid 70s, with readings closer to 80
along the atlantic coast.

Wednesday and Thursday...

the pressure gradient will strengthen in response to the departing
humberto along with high pressure building down the lee side of the
appalachians into northern florida. This will result in a breezy
period for south florida with gusty conditions likely at times along
the atlantic coastal interface. Drier air will persist in the mid
levels with shower and thunderstorm coverage remaining limited.

Given the prevailing northeast flow the best afternoon evening
chances will be along the gulf coast region. Temperatures should
remain seasonal, with the warmest readings over interior southwest
florida.

Friday through Monday...

look for an easterly low-level wind pattern to become established as
low-level ridging expands to our north and a low pressure trough
advances into our area from the east. This will bring an increase
in deep layer moisture across south florida into the weekend with
greater shower and thunderstorm coverage anticipated. Given the
flow regime, interior and west coast locations will be most favored
for afternoon evening thunderstorm development. Temperatures should
remain seasonal.

Marine
A northeast swell from hurricane humberto will gradually increase
through the week. This combined with increasing northeast to east
winds will result in hazardous winds and seas for small craft,
particularly in the gulf stream. A small craft advisory remains in
effect through Friday for the atlantic waters. High surf is a
potential concern along the palm beach county coast as well, and a
high surf advisory may be needed for this area by mid to late
week.

Aviation
Vfr conditions expected through the period. A few showers are
possible along the east coast this afternoon with the seabreeze,
but chances are too low to include for now.

Beach forecast
An elevated rip current risk will exist for the atlantic beaches
through the remainder of this week given increasing onshore winds
and building swell. Swimmers and others in the water should exercise
caution, swim near a lifeguard, and follow the directions of public
safety officials.

Preliminary point temps pops
West palm beach 90 78 89 76 20 20 20 20
fort lauderdale 90 80 89 77 20 30 30 20
miami 91 79 90 76 20 20 20 20
naples 90 77 92 73 0 0 50 20

Mfl watches warnings advisories
Fl... High rip current risk through Friday evening for flz168-172-173.

Am... Small craft advisory until 8 pm edt Saturday for amz650-651-670-
671.

Gm... None.

Discussion... 34 spm
marine... 34 spm
aviation... 32 mm
beach forecast... 34 spm


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VAKF1 - 8723214 - Virginia Key, FL 2 mi55 min NW 6 G 8
FWYF1 - Fowey Rocks, FL 8 mi25 min NNW 12 G 13 80°F 85°F1013.6 hPa (+1.5)
PEGF1 27 mi61 min WNW 5.1 G 11 79°F 1013.1 hPa
HCEF1 - Highway Creek, FL 34 mi85 min 89°F
THRF1 36 mi145 min 87°F
LBSF1 - Little Blackwater, FL 36 mi145 min 87°F
LSNF1 - Long Sound, FL 36 mi85 min 87°F
JBYF1 38 mi85 min 88°F
BWSF1 - Blackwater Sound, FL 39 mi145 min 88°F
TCVF1 - Trout Cove, FL 39 mi145 min 87°F
DKKF1 - Duck Key, FL 40 mi145 min 87°F
TRRF1 - Taylor River, FL 42 mi85 min 87°F
LMDF1 - Little Madeira, FL 44 mi85 min 87°F
CANF1 - Cane Patch, FL 45 mi85 min 86°F
BDVF1 - Broad River, FL 46 mi85 min 87°F
BNKF1 - Butternut Key, FL 46 mi145 min 86°F
WIWF1 - Willy Willy, FL 47 mi85 min 85°F
TPEF1 - Tarpon Bay East, FL 47 mi145 min 86°F
NRRF1 47 mi85 min 87°F
TBYF1 48 mi85 min 86°F
LRIF1 48 mi85 min 87°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 mi92 minNNW 510.00 miPartly Cloudy81°F73°F79%1013 hPa
Miami, Kendall-Tamiami Executive Airport, FL14 mi92 minN 610.00 miFair79°F75°F90%1012.8 hPa
Miami, Opa Locka Airport, FL16 mi92 minN 710.00 miFair79°F75°F88%1013.3 hPa
Homestead Air Reserve Base, FL19 mi89 minNW 310.00 miFair79°F74°F88%1012.8 hPa
Hollywood, North Perry Airport, FL21 mi92 minNNW 710.00 miFair79°F73°F85%1013.5 hPa

Link to 5 minute data for KMIA

Wind History from MIA (wind in knots)
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Last 24hrNW6W4W8NW7W7W10
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NW8W9NW7NW7N6NW6NW4NE4N4N4CalmCalmCalmNW3NW4NW3N5N3
1 day agoW34NW44W5W7W8SW10SW9W9W8
G18
NW6W6W5N55W6W3W3W4W3NW5W5W5
2 days agoN43CalmCalmCalmNE5E7NE9E8E9E8NE5SW5CalmCalmNW4W4W3W3W5W3W3NW3W3

Tide / Current Tables for Key Biscayne Yacht Club, Biscayne Bay, Florida
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Key Biscayne Yacht Club
Click for Map
Tue -- 06:17 AM EDT     0.35 feet Low Tide
Tue -- 07:07 AM EDT     Sunrise
Tue -- 09:55 AM EDT     Moonset
Tue -- 12:03 PM EDT     2.40 feet High Tide
Tue -- 06:37 PM EDT     0.52 feet Low Tide
Tue -- 07:22 PM EDT     Sunset
Tue -- 09:42 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.42.21.81.30.90.50.40.40.81.31.82.22.42.321.61.20.80.60.50.81.21.72.1

Tide / Current Tables for Miami Harbor Entrance, Florida Current
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Miami Harbor Entrance
Click for Map
Tue -- 12:11 AM EDT     -0.00 knots Slack
Tue -- 02:34 AM EDT     -1.46 knots Max Ebb
Tue -- 06:21 AM EDT     0.00 knots Slack
Tue -- 07:07 AM EDT     Sunrise
Tue -- 08:48 AM EDT     2.01 knots Max Flood
Tue -- 09:54 AM EDT     Moonset
Tue -- 12:38 PM EDT     -0.00 knots Slack
Tue -- 02:54 PM EDT     -1.38 knots Max Ebb
Tue -- 06:44 PM EDT     0.00 knots Slack
Tue -- 07:22 PM EDT     Sunset
Tue -- 09:06 PM EDT     1.83 knots Max Flood
Tue -- 09:42 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.2-0.8-1.4-1.4-1.3-1-0.40.81.821.81.50.7-0.4-1.2-1.4-1.3-1.1-0.60.31.41.81.71.4

Weather Map
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wmap_A
GEOS 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.
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Other links: Northern Pacific     Contential US     Full GOES-East
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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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.