Sunday, August20, 2017 L-36.com


Marine Weather and Tides
Biscayne Park, 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 6:55AMSunset 7:52PM Sunday August 20, 2017 8:49 PM EDT (00:49 UTC) Moonrise 4:38AMMoonset 6:11PM Illumination 2% Phase: Waning Crescent; Moon at 28 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- 404 Pm Edt Sun Aug 20 2017
.small craft exercise caution...
Tonight..East southeast winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Period 4 seconds. Intracoastal waters choppy in exposed areas.
Monday..East winds 10 to 15 knots along the coast to east 15 to 20 knots in the gulf stream. Seas 2 to 4 feet with occasional seas to 5 feet. Period 4 seconds. Intracoastal waters choppy in exposed areas. A slight chance of showers and Thunderstorms in the morning...then a chance of showers and Thunderstorms in the afternoon.
Monday night..East northeast winds 15 to 20 knots becoming southeast 10 to 15 knots after midnight. Seas 3 to 5 feet with occasional seas to 6 feet. Period 5 seconds. Intracoastal waters choppy in exposed areas. A chance of showers and Thunderstorms.
Tuesday..Southeast winds around 10 knots. Seas 2 to 3 feet. Period 5 seconds. Intracoastal waters a light chop. A chance of showers and Thunderstorms.
Tuesday night..Southeast winds 10 to 15 knots. Seas around 2 feet. Intracoastal waters a moderate chop. Showers and Thunderstorms likely.
Wednesday..South southeast winds 5 to 10 knots. Seas around 2 feet. Intracoastal waters a light chop. Showers and Thunderstorms likely.
Wednesday night..South southeast winds 10 to 15 knots. Seas around 2 feet. Intracoastal waters a light chop. Showers and Thunderstorms likely.
Thursday..South southwest winds 10 to 15 knots. Seas around 2 feet. Intracoastal waters a light chop. Showers and Thunderstorms likely.
Thursday night and Friday..South southwest winds 5 to 10 knots. Seas around 2 feet. Intracoastal waters a light chop. Showers and Thunderstorms likely.
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- 404 Pm Edt Sun Aug 20 2017
Synopsis..Fresh east-southeast winds tonight and early Monday as a tropical wave departs the area, shifting to east-northeasterly Monday afternoon and Monday night as another tropical wave approaches. Choppy seas with significant wave heights 4 to 5 feet through Monday night. Seas gradually diminish starting Tuesday as winds slacken and turn more southeasterly, then southerly late in the week. A few showers and Thunderstorms this evening, before a dry day Monday. Shower and Thunderstorm chances increase again starting Monday night and continue high through the week. Locally higher winds and waves are possible near Thunderstorms.
Gulf stream hazards..Sustained east-southeast winds 15 to 20 knots with higher gusts tonight into Monday morning, turning east-northeast Monday afternoon and Monday night. The approximate location of the west wall of the gulf stream as of aug 19, 2017 at 1200 utc... 9 nautical miles east southeast of fowey rocks. 15 nautical miles east southeast of port everglades. 11 nautical miles east northeast of lake worth. 12 nautical miles east of jupiter inlet. This data courtesy of the naval oceanographic office.

7 Day Forecast for Marine Location Near Biscayne Park, FL
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location: 25.88, -80.16     debug


Area Discussion for - Miami-South Florida, FL
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Fxus62 kmfl 202333
afdmfl
area forecast discussion
national weather service miami fl
733 pm edt Sun aug 20 2017

Aviation
As a tropical wave that brought active weather to south florida moves
away, conditions will improve. Forecast is for mainlyVFR conditions
through the TAF period, with the exception of the first couple of
hours for apf, where tsra could still have an impact. Also, a stray
shower may affect the atlantic TAF sites through the evening, but
there is too much uncertainty to mention attm. Behind the system,
the wind will increase through the night, with an east wind of
around 15kts tomorrow across the atlantic coast.

Prev discussion issued 349 pm edt Sun aug 20 2017
discussion...

at mid-afternoon Sunday: the axis of a tropical wave was moving
westward out of south florida into the eastern gulf. Goes-16
derived tpw imagery showed drier air approaching the peninsula
from the east, but it hadn't arrived quite yet. After a round of
showers and thunderstorms this morning and early afternoon, some
sunshine has allowed for destabilization of the air mass over the
southern and western parts of the area. A few additional showers
and thunderstorms are developing and will likely continue for a
few more hours into the evening before the drier air moves in,
ascent associated with the tropical wave departs the area, and
nocturnal cooling stabilizes the atmosphere.

Late tonight into Monday: the dry airmass will be moving over the
region, with subsidence between the departing tropical wave and
the approaching next tropical wave (invest 92l). Pops will be much
below normal for this time of year. Forecast soundings actually
indicate a bit of a capping inversion above the moist boundary
layer, so while some scattered cumulus clouds are likely during
the eclipse viewing period, significant deep clouds may be
limited. With plenty of heating and moderate easterly flow at
the surface, also expect a sea breeze will also push inland, and
cannot rule out an isolated shower or two along it. In the very
late afternoon and evening hours, the next tropical wave may draw
close enough to begin pushing some clouds and scattered showers
towards the east coast.

Tuesday and Wednesday: another surge of deep tropical moisture
associated with the next tropical wave (92l) will move into the
area. This wave appears to be slower-moving, and its remnants in
the form of a shear axis will likely stall over or near south
florida for a couple of days. In addition, height falls over the
northeast us southeast canada will induce more of a southerly flow
over the area as a weakening front pushes toward northern
florida. The combination of all these features points to periods
of rain and thunderstorms, with potentially some local heavy rain
at times.

Thursday to Saturday: the decaying front slowly pushes south into
florida and absorbs any remnant low-level vorticity from 92l.

Several medium range models hint at cyclogenesis over the gulf
stream northeast of our region as this absorption process takes
place. Regardless of whether a surface low forms or not, there
will be a lot of moisture around, a trailing shear axis, and deep
south southwest flow providing a continuous moisture stream, which
would argue for additional rounds of rain and thunderstorms
(especially east coast). In fact, the NCEP weather prediction
center is forecasting an areal average of 3 to 4+ inches of rain
over much of the region this week. This would indicate the
potential for much heavier amounts locally, driven by mesoscale
processes. This calls for careful monitoring of the flood
potential throughout the week.

Marine...

moderate to fresh easterly breezes are likely tonight as a
tropical wave departs the region, and again on Monday evening into
Tuesday morning as another tropical wave approaches. This will
bring a moderate chop to the local waters with significant wave
heights 4 to 5 feet in the open waters. Winds slacken and turn
southeasterly mid week and then southerly late in the week with
seas decreasing.

A few thunderstorms are possible this evening over the local
waters, and then thunderstorm chances increase again Monday night
through the rest of the week. Winds and waves will be locally
higher near any thunderstorms.

Beach forecast...

with breezy onshore flow, the risk of rip currents at the atlantic
beaches will rise to at least moderate levels later tonight
through Monday night.

Preliminary point temps pops
West palm beach 78 90 82 92 20 20 40 50
fort lauderdale 80 91 81 91 20 20 40 50
miami 80 93 80 91 20 20 40 50
naples 76 96 79 92 20 10 20 50

Mfl watches warnings advisories
Fl... None.

Am... None.

Gm... None.

Discussion... 22 ks
marine... 22 ks
aviation... 13
beach forecast... 22 ks


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VAKF1 - 8723214 - Virginia Key, FL 10 mi50 min NNE 7 G 8.9 85°F 89°F1016.2 hPa (+1.0)
PVGF1 - Port Everglades Channel, FL 15 mi50 min NE 12 G 16 85°F 1016.7 hPa (+0.6)78°F
FWYF1 - Fowey Rocks, FL 20 mi110 min NE 12 G 13 85°F 87°F1016.3 hPa (-0.0)
HCEF1 - Highway Creek, FL 46 mi170 min 89°F
LSNF1 - Long Sound, FL 47 mi110 min 90°F
LBSF1 - Little Blackwater, FL 48 mi170 min 89°F

Wind History for Virginia Key, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Miami, Opa Locka Airport, FL7 mi57 minNE 710.00 miMostly Cloudy86°F80°F83%1017 hPa
Miami, Miami International Airport, FL8 mi57 minNE 710.00 miMostly Cloudy86°F75°F72%1016.7 hPa
Hollywood, North Perry Airport, FL9 mi57 minENE 710.00 miFair85°F78°F80%1017.2 hPa
Fort Lauderdale/Hollywood International Airport, FL13 mi57 minNE 810.00 miMostly Cloudy84°F78°F82%1016.5 hPa
Miami, Kendall-Tamiami Executive Airport, FL21 mi57 minE 910.00 miA Few Clouds86°F75°F72%1016.2 hPa
Fort Lauderdale, Fort Lauderdale Executive Airport, FL22 mi57 minNE 710.00 miPartly Cloudy83°F77°F82%1017.1 hPa

Wind History from OPF (wind in knots)
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Last 24hrE10E10SE10SE13
G18
SE7E4CalmE3E4E4S8SE4E5E4E4NE3NE6NE10E10E12E8E11E11NE7
1 day agoE8CalmE3CalmNW4N5N3E4NE4NE3CalmNW4N3CalmE6NE10E9E6E7E11E12
G19
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2 days agoE4E3E5E3NE3E4SE4E3NE3CalmNE3NE3SE4E5SE4E10E7SE10SE12
G17
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Tide / Current Tables for Biscayne Creek, ICWW, Florida
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Biscayne Creek
Click for Map
Sun -- 03:06 AM EDT     0.11 feet Low Tide
Sun -- 05:38 AM EDT     Moonrise
Sun -- 06:55 AM EDT     Sunrise
Sun -- 08:48 AM EDT     2.65 feet High Tide
Sun -- 03:30 PM EDT     -0.26 feet Low Tide
Sun -- 07:10 PM EDT     Moonset
Sun -- 07:51 PM EDT     Sunset
Sun -- 09:25 PM EDT     2.79 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.30.70.30.10.30.81.422.52.62.421.30.60.1-0.2-0.20.30.91.72.32.72.72.4

Tide / Current Tables for Miami Harbor Entrance, Florida Current
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Miami Harbor Entrance
Click for Map
Sun -- 12:46 AM EDT     -1.75 knots Max Ebb
Sun -- 02:58 AM EDT     0.00 knots Slack
Sun -- 05:38 AM EDT     Moonrise
Sun -- 06:33 AM EDT     2.15 knots Max Flood
Sun -- 06:55 AM EDT     Sunrise
Sun -- 09:03 AM EDT     -0.00 knots Slack
Sun -- 01:03 PM EDT     -1.93 knots Max Ebb
Sun -- 03:21 PM EDT     0.00 knots Slack
Sun -- 06:59 PM EDT     2.48 knots Max Flood
Sun -- 07:10 PM EDT     Moonset
Sun -- 07:51 PM EDT     Sunset
Sun -- 09:43 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.6-1.7-1.201.21.82.12.11.30.1-0.9-1.4-1.7-1.9-1.6-0.50.91.82.32.52.10.9-0.3-1

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 (20,4,5,8)
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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.