Monday, August21, 2017 L-36.com


Marine Weather and Tides
Miami, 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 7:51PM Monday August 21, 2017 11:21 PM EDT (03:21 UTC) Moonrise 5:42AMMoonset 6:58PM 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- 922 Pm Edt Mon Aug 21 2017
Rest of tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Period 5 seconds. Intracoastal waters a moderate chop. A chance of showers and Thunderstorms.
Tuesday..Southeast winds 5 to 10 knots. Seas around 2 feet. Period 5 seconds. Intracoastal waters a light chop. Showers likely in the morning. A chance of Thunderstorms. A chance of showers in the afternoon.
Tuesday night..Southeast winds 10 to 15 knots. Seas around 2 feet. Period 3 seconds. Intracoastal waters a moderate chop. A chance of showers and Thunderstorms.
Wednesday..Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Period 4 seconds. Intracoastal waters a moderate chop. Showers likely and a chance of Thunderstorms.
Wednesday night..Southeast winds 10 to 15 knots. Along the coast, seas around 2 feet. In the gulf stream, seas around 2 feet building to 2 to 4 feet with occasional seas to 5 feet after midnight. Intracoastal waters a moderate chop. A chance of Thunderstorms in the evening. Showers likely through the night. A slight chance of Thunderstorms after midnight.
Thursday..South winds around 10 knots. Seas 2 to 3 feet. Intracoastal waters a light chop. Showers likely.
Thursday night and Friday..Southwest winds 5 to 10 knots. Seas around 2 feet. Intracoastal waters a light chop. Showers likely.
Friday night..West southwest winds 5 to 10 knots. Seas around 2 feet. Intracoastal waters a light chop. Showers likely.
Saturday..West winds around 5 knots. Seas less than 2 feet. Intracoastal waters smooth. Showers 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- 922 Pm Edt Mon Aug 21 2017
Synopsis..Another tropical wave approaching the area will bring periods of showers and Thunderstorms starting tonight. Moderate to fresh easterly breezes will become southeasterly and decrease Tuesday over the atlantic waters, before swinging to southerly and southwesterly by the weekend. Over the gulf waters and lake okeechobee, moderate east winds tonight will become variable in both direction and speed for the rest of the week, remaining generally 15 knots or less. Moderate choppy seas with waves to 4 feet tonight will gradually decrease Tuesday. Winds and waves may be locally higher near Thunderstorms.
Gulf stream hazards..Easterly wind 15 to 20 knots tonight. 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 Miami city, FL
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location: 25.78, -80.19     debug


Area Discussion for - Miami-South Florida, FL
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Fxus62 kmfl 212347
afdmfl
area forecast discussion
national weather service miami fl
747 pm edt Mon aug 21 2017

Update
Quick update to adjust pops for tonight based on radar and
satellite trends. Convection associated with the bahamian tropical
wave has waned a bit the last few hours. This may be a diurnal
minimum. With an increase in moisture still approaching, model
trends support scattered additional convection developing
overnight over the atlantic waters and approaching the southeast
coast around sunrise. Otherwise no changes to the previous
forecast.

Aviation
Scattered showers with brief MVFR or ifr conditions expected to
affect fll mia area sites through about 03z, otherwise mainly dry
andVFR will prevail for most of the night. Winds 060-080 degrees 10
knots or less all sites, shifting to 100-110 degrees 10-12 knots by
15z Tuesday as trough moves into area. Trough will introduce deeper
moisture and increased showers across all of south florida during
day on Tuesday, with prob30 for tsra MVFR brief ifr at all sites
from 15z-18z onward.

Prev discussion issued 357 pm edt Mon aug 21 2017
discussion...

scattered cumulus clouds dot the south florida sky at mid
afternoon as the eclipse comes to an end. The area is under a
subsident regime between two tropical waves with a well-defined
capping inversion on the mfl 12z sounding. Goes-16 imagery
indicates the next tropical wave (called invest 92l by the
national hurricane center) rapidly approaching from the east. In
fact kamx 88d indicates scattered showers already beginning to
cross the east coast.

Tonight and Tuesday: coverage and intensity of showers and a few
thunderstorms are expected to steadily increase tonight over the
east coast. Activity may hold off til closer til sunrise near the
collier gulf coast and glades hendry counties. High resolution
guidance suggests convection that moves in will have the
potential for efficient rain rates especially toward sunrise and
during the day. Coverage increases Tuesday as the axis of the
tropical wave moves over and then just northwest of the area and
the region enters the more favorable sector for upward motion.

Wednesday through Friday: the leftover vorticity associated with
the tropical wave comes nearly to a halt over the area wed-thu.

This will yield a deep southeasterly fetch tapping rich tropical
moisture with several weak disturbances bringing periods of
convection. Whether 92l develops a surface cyclone near the region
is not the most important thing to focus on in terms of impacts.

Regardless of the scientific classification of the system, the
most significant impacts are likely to be from periods of heavy
rain.

This weekend: the trailing front from the canadian low gradually
sinks into the southeast us and approaches northern florida. This
front will likely absorb whatever vorticity remains of 92l just
northeast of our region. This will keep southerly southwesterly
flow with rich moisture overhead, favorable for continued periods
of showers and thunderstorms with locally heavy rain.

Impacts from heavy rain through the weekend: typically prone
areas of poor drainage will be at increased risk of ponding water
and occasional minor flooding. Areas of street flooding are also
likely to be an issue during periods of heavy rain. While there is
some risk for more significant flooding problems beyond the usual
vulnerable roads and low spots, there is not enough confidence
yet regarding timing location of the greatest threat to justify a
flood watch. However, a watch may still be needed later in the
week as the ground saturates.

Marine...

over the atlantic waters, a fresh easterly breeze today will
gradually decrease Tuesday to gentle as winds turn out of the
southeast, eventually swinging to southerly or southwesterly by
the weekend. Over the gulf waters and lake okeechobee, a moderate
easterly breeze tonight will become variable in both direction
and speed from Tuesday into the weekend, but remaining generally
below 15 knots. A moderate chop and seas to 4 feet tonight will
gradually improve Tuesday into the latter half of the week.

Periods of showers and thunderstorms can be expected tonight
though the coming weekend, with locally gusty winds and higher
waves near thunderstorms.

Beach forecast...

a moderate risk of rip currents will continue through the night at
the atlantic beaches as moderate gusty onshore winds continue. The
risk will gradually diminish back to slight levels Tuesday.

Prev discussion... Issued 150 pm edt Mon aug 21 2017
aviation...

vfr conditions will prevail through this evening. Winds this
afternoon will be east around 15 kts gusting to 20-23 kts for
east coast terminals. Tropical wave approaching from the east will
bring vcsh tonight for east coast terminals. Increasing coverage
of showers along with some thunder possible after 09z and
continuing into Tuesday for east coast sites. MVFR conditions
likely at times on Tuesday morning for east coast sites. Showers
are unlikely to be near apf until after 15z. Future shifts will
evaluate potential for tempo groups and possibly shra in
prevailing.

Preliminary point temps pops
West palm beach 82 93 80 91 30 50 40 60
fort lauderdale 81 90 80 90 40 50 50 60
miami 81 91 79 90 40 60 50 60
naples 79 92 77 92 20 70 50 60

Mfl watches warnings advisories
Fl... None.

Am... None.

Gm... None.

Update discussion marine beach forecast... 22 ks
aviation... 59 rm


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VAKF1 - 8723214 - Virginia Key, FL 4 mi51 min NNE 4.1 G 6 84°F 87°F1018.6 hPa
FWYF1 - Fowey Rocks, FL 14 mi81 min ENE 13 G 13 84°F 86°F1019.1 hPa (+1.4)
PVGF1 - Port Everglades Channel, FL 22 mi39 min ENE 9.9 G 20 83°F 1019.4 hPa77°F
LSNF1 - Long Sound, FL 40 mi141 min 88°F
TRRF1 - Taylor River, FL 46 mi141 min 89°F
WIWF1 - Willy Willy, FL 47 mi141 min 88°F
BDVF1 - Broad River, FL 47 mi141 min 87°F
LMDF1 - Little Madeira, FL 48 mi141 min 89°F
NRRF1 49 mi141 min 86°F

Wind History for Virginia Key, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Miami, Miami International Airport, FL6 mi28 minN 010.00 miPartly Cloudy85°F75°F75%1019.1 hPa
Miami, Opa Locka Airport, FL10 mi28 minNE 510.00 miMostly Cloudy82°F80°F94%1019.3 hPa
Hollywood, North Perry Airport, FL15 mi28 minNE 610.00 miMostly Cloudy81°F77°F88%1019.5 hPa
Miami, Kendall-Tamiami Executive Airport, FL16 mi28 minW 310.00 miMostly Cloudy81°F77°F88%1019.1 hPa
Fort Lauderdale/Hollywood International Airport, FL20 mi28 minE 1110.00 miLight Rain80°F75°F85%1019 hPa
Homestead Air Reserve Base, FL23 mi83 minNE 410.00 miFair83°F77°F84%1018.9 hPa

Wind History from MIA (wind in knots)
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Last 24hrE12E12E7E8E7E9E9E9E10E12E13E13E10E14
G20
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G16
NE11E8E34Calm
1 day agoSE10SE6CalmCalmNE3NE4CalmNE9SE7NE7NE5E6CalmE5E7E9E9NE10E9E9NE7NE7E16
G20
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2 days agoNW3NW4NW3NW3NE3NE3E6E5E3E45NE5E8
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E10E8SE11E9

Tide / Current Tables for Miami, Marina, Biscayne Bay, Florida
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Miami
Click for Map
Mon -- 03:08 AM EDT     0.00 feet Low Tide
Mon -- 06:41 AM EDT     Moonrise
Mon -- 06:56 AM EDT     Sunrise
Mon -- 09:14 AM EDT     2.77 feet High Tide
Mon -- 02:31 PM EDT     New Moon
Mon -- 03:30 PM EDT     -0.24 feet Low Tide
Mon -- 07:50 PM EDT     Sunset
Mon -- 07:57 PM EDT     Moonset
Mon -- 09:45 PM EDT     2.86 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.40.70.200.20.71.31.92.52.82.72.21.50.80.2-0.2-0.20.20.91.62.22.72.82.6

Tide / Current Tables for Miami Harbor Entrance, Florida Current
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Miami Harbor Entrance
Click for Map
Mon -- 01:34 AM EDT     -1.91 knots Max Ebb
Mon -- 03:49 AM EDT     0.00 knots Slack
Mon -- 06:41 AM EDT     Moonrise
Mon -- 06:56 AM EDT     Sunrise
Mon -- 07:20 AM EDT     2.30 knots Max Flood
Mon -- 09:56 AM EDT     -0.00 knots Slack
Mon -- 01:51 PM EDT     -2.02 knots Max Ebb
Mon -- 02:31 PM EDT     New Moon
Mon -- 04:12 PM EDT     0.01 knots Slack
Mon -- 07:44 PM EDT     2.51 knots Max Flood
Mon -- 07:50 PM EDT     Sunset
Mon -- 07:57 PM EDT     Moonset
Mon -- 10:31 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.5-1.8-1.9-1.10.21.422.32.11.2-0.1-1-1.5-1.9-2-1.6-0.31.122.42.51.90.6-0.5

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.