Sunday, August20, 2017 L-36.com


Marine Weather and Tides
Florida City, 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 6:56AMSunset 7:53PM Sunday August 20, 2017 5:02 PM EDT (21:02 UTC) Moonrise 4:43AMMoonset 6:14PM 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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GMZ657 Coastal Waters From Chokoloskee To Bonita Beach Fl Out 20 Nm- Coastal Waters From East Cape Sable To Chokoloskee Fl Out 20 Nm- 404 Pm Edt Sun Aug 20 2017
.small craft exercise caution...
Tonight..East winds 10 to 15 knots nearshore and east 15 to 20 knots offshore. Seas less than 2 feet nearshore and 2 to 3 feet offshore. Period 3 seconds. Bay and inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms in the evening.
Monday..East southeast winds 10 to 15 knots. Seas less than 2 feet nearshore and 2 to 3 feet offshore. Period 4 seconds. Bay and inland waters a light chop. A slight chance of showers and Thunderstorms in the afternoon.
Monday night..East northeast winds 10 to 15 knots nearshore and east northeast 15 to 20 knots offshore. Seas less than 2 feet nearshore and 2 to 3 feet offshore. Period 3 seconds. Bay and inland waters a moderate chop. A slight chance of Thunderstorms in the evening. A chance of showers through the night. A chance of Thunderstorms after midnight.
Tuesday..NEarshore, east northeast winds 5 to 10 knots becoming south southeast in the afternoon. Offshore, east northeast winds 10 to 15 knots becoming southeast around 5 knots in the afternoon. Seas around 2 feet. Period 2 seconds. Bay and inland waters a light chop. A chance of showers and Thunderstorms.
Tuesday night..Southeast winds 5 to 10 knots. Seas less than 2 feet. Bay and inland waters a light chop. A chance of showers and Thunderstorms.
Wednesday and Wednesday night..South southeast winds 5 to 10 knots. Seas less than 2 feet. Bay and inland waters a light chop. Showers and Thunderstorms likely.
Thursday through Friday..Southwest winds 5 to 10 knots. Seas less than 2 feet. Bay and inland waters a light chop. Showers and Thunderstorms likely.
GMZ600 Synopsis For Destin Fl To Pascagoula Ms Out 60 Nm Including Mobile Bay- 356 Pm Cdt Sun Aug 20 2017
Synopsis..Surface high pressure builds in from the east through the early to middle part of the week, resulting in a diurnal pattern for winds dictated by the land breeze and sea breeze. A weak front is expected to stall near or north of the marine area late in the week, which will maintain a light and variable flow. Little change in seas is expected.

7 Day Forecast for Marine Location Near Florida City, FL
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location: 25.32, -81.03     debug


Area Discussion for - Miami-South Florida, FL
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Fxus62 kmfl 201949
afdmfl
area forecast discussion
national weather service miami fl
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.

Aviation
Convection associated with a tropical wave is moving across south
florida today, bringing MVFR and brief bouts of ifr to the east
coast terminals. Convection should spread north and west this
afternoon and evening. Sub-vfr bouts will be possible with a need
for short-fused amendments through the evening. Convection should
begin to trend down as the wave exits later this evening. Eventual
clearing is expected later in the forecast period.

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 81 93 81 92 20 20 30 60
fort lauderdale 82 91 81 91 20 20 40 60
miami 81 92 80 91 10 20 30 60
naples 77 96 79 92 20 20 10 50

Mfl watches warnings advisories
Fl... None.

Am... None.

Gm... None.

Discussion... 22 ks
marine... 22 ks
aviation... 02 rag
beach forecast... 22 ks


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CWAF1 2 mi123 min 87°F
SREF1 4 mi63 min 87°F
GBIF1 - Gunboat Island, FL 4 mi63 min 87°F
NRRF1 6 mi63 min 85°F
HREF1 7 mi63 min 85°F
TPEF1 - Tarpon Bay East, FL 7 mi123 min 85°F
CANF1 - Cane Patch, FL 8 mi123 min 86°F
WWEF1 8 mi123 min 87°F
LRIF1 8 mi63 min 88°F
BDVF1 - Broad River, FL 11 mi63 min 85°F
LBRF1 - Broad River Lower, FL 13 mi123 min 86°F
GBTF1 - Garfield Bight, FL 16 mi63 min 89°F
MUKF1 - Murray Key, FL 16 mi63 min 89°F
BKYF1 17 mi63 min 90°F
LMRF1 - Lostmans River, FL 18 mi63 min 89°F
WIWF1 - Willy Willy, FL 18 mi63 min 86°F
TBYF1 20 mi63 min 91°F
JKYF1 - Johnson Key, FL 20 mi123 min 88°F
TRRF1 - Taylor River, FL 21 mi63 min 87°F
LMDF1 - Little Madeira, FL 23 mi63 min 89°F
LRKF1 - Little Rabbit Key, FL 26 mi123 min 89°F
BOBF1 - Bob Allen, FL 27 mi63 min 90°F
TCVF1 - Trout Cove, FL 27 mi123 min 91°F
CNBF1 - Cannon Bay, FL 28 mi63 min 88°F
WPLF1 - Watson Place, FL 29 mi63 min 88°F
DKKF1 - Duck Key, FL 30 mi123 min 89°F
LSNF1 - Long Sound, FL 31 mi63 min 90°F
HCEF1 - Highway Creek, FL 31 mi123 min 89°F
BNKF1 - Butternut Key, FL 32 mi63 min 89°F
PKYF1 - Peterson Key, FL 32 mi63 min 89°F
LBSF1 - Little Blackwater, FL 33 mi123 min 89°F
BWSF1 - Blackwater Sound, FL 33 mi123 min 89°F
MLRF1 - Molasses Reef, FL 41 mi63 min ESE 12 G 14 86°F 87°F1015.3 hPa
VCAF1 - 8723970 - Vaca Key, FL 42 mi45 min E 6 G 13 87°F 90°F1014.1 hPa

Wind History for Vaca Key, FL
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Homestead Air Reserve Base, FL36 mi65 minE 1110.00 miThunderstorm in Vicinity89°F79°F74%1015.9 hPa

Wind History from HST (wind in knots)
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Last 24hrE13E9NE11E9NE7E10E13SE11E5NE3CalmNE8N5N5NW4N6N5NE8E7SW5E8E6E8E11
1 day agoE10E9E7NE5CalmCalmCalmCalmNW8NW3N4N4E5CalmCalmCalmNW4E5E8E9NE9NE10NE10
G15
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2 days agoSE7E7E7NE3CalmCalmCalmW3CalmCalmCalmE3CalmCalmCalmNW3CalmE6E7E8E6E9E11
G17
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Tide / Current Tables for Whitewater Bay, Florida
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Whitewater Bay
Click for Map
Sun -- 04:14 AM EDT     0.68 feet High Tide
Sun -- 05:43 AM EDT     Moonrise
Sun -- 07:00 AM EDT     Sunrise
Sun -- 10:16 AM EDT     0.40 feet Low Tide
Sun -- 03:31 PM EDT     0.93 feet High Tide
Sun -- 07:13 PM EDT     Moonset
Sun -- 07:54 PM EDT     Sunset
Sun -- 11:05 PM EDT     -0.13 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.30.50.60.70.70.60.60.50.40.40.40.60.70.80.90.90.80.70.50.30.1-0.1-0.1

Tide / Current Tables for Shark River entrance, Florida
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Shark River entrance
Click for Map
Sun -- 01:18 AM EDT     3.72 feet High Tide
Sun -- 05:43 AM EDT     Moonrise
Sun -- 07:00 AM EDT     Sunrise
Sun -- 07:23 AM EDT     1.18 feet Low Tide
Sun -- 12:35 PM EDT     5.10 feet High Tide
Sun -- 07:14 PM EDT     Moonset
Sun -- 07:54 PM EDT     Sunset
Sun -- 08:12 PM EDT     -0.38 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.33.73.63.32.92.31.61.21.32.23.44.455.14.743.12.110.1-0.4-0.10.92

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 (17,4,5,8)
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Ground Weather Radar Station Miami, FL
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weather_mapweather_map weather_map

Gulf Stream Current


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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.