Sunday, April30, 2017 L-36.com


Marine Weather and Tides
Miami Beach, FL

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:42AMSunset 7:52PM Sunday April 30, 2017 12:44 PM EDT (16:44 UTC) Moonrise 9:41AMMoonset 11:29PM Illumination 22% Phase: Waxing Crescent; Moon at 5 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- 1035 Am Edt Sun Apr 30 2017
.small craft advisory in effect through Monday morning...
Rest of today..East southeast winds around 20 knots with gusts to around 30 knots. Seas 4 to 6 feet with occasional seas to 8 feet. Period 5 seconds. Intracoastal waters rough in exposed areas. A slight chance of showers.
Tonight..East southeast winds 15 to 20 knots with gusts to around 30 knots. Seas 4 to 6 feet with occasional seas to 8 feet. Period 6 seconds. Intracoastal waters choppy in exposed areas. A slight chance of showers.
Monday..Southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Dominant period 5 seconds. Intracoastal waters a moderate chop. A slight chance of showers.
Monday night..Winds southeast winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Dominant period 4 seconds. Intracoastal waters choppy in exposed areas. A slight chance of showers after midnight.
Tuesday..East southeast winds 5 to 10 knots. Seas 2 to 3 feet. Intracoastal waters a light chop.
Tuesday night..East southeast winds 5 to 10 knots along the coast to east southeast 10 to 15 knots in the gulf stream. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A slight chance of showers.
Wednesday..East winds 10 to 15 knots. Seas around 2 feet. Intracoastal waters a moderate chop.
Wednesday night and Thursday..Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop.
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- 1035 Am Edt Sun Apr 30 2017
Synopsis...strong surface high pressure to the west of bermuda will maintain breezy southeast winds over the waters through early Monday morning. Expect waves 4 to 6 feet over the atlantic waters and 3 to 5 feet over the outer gulf waters. Other than some isolated light showers over waters, conditions should remain dry. There will be an increased chance of shower and Thunderstorm activity early next week.
Gulf stream hazards..None. The approximate location of the west wall of the gulf stream as of apr 29, 2017 at 1200 utc... 6 nautical miles east southeast of fowey rocks. 10 nautical miles east of port everglades. 8 nautical miles east southeast of lake worth. 10 nautical miles east of jupiter inlet. This data courtesy of the naval oceanographic office.

7 Day Forecast for Marine Location Near Miami Beach, FL
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location: 25.79, -80.16     debug


Area Discussion for - Miami-South Florida, FL
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Fxus62 kmfl 301418 aab
afdmfl
area forecast discussion... Updated
national weather service miami fl
1018 am edt Sun apr 30 2017

Update
High pressure will remain over the western atlantic waters this
afternoon keeping the breezy to windy easterly wind flow over
south florida. This will keep the high risk of rip currents
ongoing along the east coast beaches of south florida for this
afternoon.

There has also been some isolated showers affecting the metro
areas of palm beach and northern broward counties this morning.

The isolated showers will continue to develop over the atlantic
waters and move quickly to the west into the east coast metro
areas of south florida. Therefore, the slight chance of showers
will continue for the east coast metro areas of south florida this
afternoon.

The forecast high temperature for naples today is 93 degrees and
this could tie the record high temperature of 93 degrees set back
in 1991. Therefore, near record high wording will be added for
the metro areas of collier county for this afternoon in the
update.

The latest model forecast is still showing the relative humidity
to fall down to around 40 percent over the far western interior
areas and metro areas of collier county this afternoon with 20
foot winds around 15 mph. However, there is still a chance that
the relative humidity could fall down into the mid to upper 30s
over this area this afternoon if temperatures get warmer than
forecasted. Therefore, the fire weather watch will remain in place
for today over the metro and interior areas of collier county.

Rest of the forecast looks good at this time, and no other changes
are planned at this time.

Prev discussion /issued 729 am edt Sun apr 30 2017/
aviation...

easterly winds around 15 knots will continue through the morning
hours before increasing to around 20 with gusts up to 30 knots
this afternoon over the east coast TAF sites. Kapf TAF site will
also increase from around 10 knots this morning to around 15 with
gusts up to 25 knots this afternoon from the east. Some showers
will continue to develop over the atlantic waters and move west
into the east coast metro areas today. Therefore, vcsh has been
added to the east coast TAF sites for today. Kapf TAF site will
remain dry today. The ceiling and vis will remain inVFR
conditions outside of any showers that move over the east coast
taf sites which could lower down into MVFR conditions.

Aviation... 54/bnb
prev discussion... /issued 459 am edt Sun apr 30 2017/
discussion...

through Wednesday: water vapor imagery loop shows longwave
troughing from the southern plains to the midwest, with the
center of low pressure tightly wound over western oklahoma.

Ridging could be observed ahead of this system over the southeast
conus. Surface analysis continues to indicate strong surface high
pressure between bermuda and the carolinas. This feature has been
responsible for the gusty east southeast winds experienced
overnight and into this morning. Winds have remained elevated
along the atlantic coast, generally sustained from 15 to 20 mph,
with much weaker winds reported across the interior. Boundary
layer mixing from these winds should hinder the development of
any dense fog, thus have not included mention during the morning grid
production. As models keep the aforementioned surface high
anchored in place through this evening, surface pressure gradients
will remain tight, and breezy east southeast winds should
persist. As sufficient low level moisture advects westward, the
hrrr and hi- res WRF prog isolated showers to move onshore along
portions of the east coast metro. Therefore, have upped pop
coverage inland through the next 24-hours to reflect this. Not
expecting much in the way of significant accumulation through, as
the moisture profile is quite shallow. With east southeast flow
in place, maximum temperatures may once again creep near their
daily records over western collier county, with forecast highs in
the region pushing the low 90s. By Monday, the trough and
associated cold front will begin to approach the central gulf. In
response, the surface high pressure that was responsible for the
breezy conditions should move further east, away from florida and
winds will weaken slightly. Atmospheric moisture will begin to
rise across the CWA with GFS forecast pw values between 1.5" to
1.6". Diurnal heating, combined with this increase in moisture,
will lend to the change of afternoon showers and thunderstorms,
mainly over the interior. Through mid week, the front to the north
will wash out, but residual moisture should continue chances of
diurnally driven showers and thunderstorms. Maximum temperatures
through Wednesday are forecast slightly above normal.

Thursday through early next weekend: both the GFS and ECMWF deepen
a trough over the central CONUS with an associated cold front
stretching southward over the gulf. Moist air ahead of the system
will bring an increased chance for showers and thunderstorms
late Thursday and Friday. The GFS has been consistent with the
front pushing through the region late Friday. However, the
frontal passage with the ECMWF with the last couple runs has been
anywhere from Friday evening to late Saturday. Still nearly a week
out, confidence on exact timing is relatively low. Have added
slight chance of showers to the Saturday forecast to account for
the uncertainty.

Marine...

the winds will be easterly around 20 knots over most of south
florida waters though the remainder of this morning, except for
the the near- shore gulf waters and lake okeechobee waters where
the speeds will be 15 to 20 knots. This will allow for 4 to 6 foot
seas in the atlantic waters and up to 5 feet in the outer gulf.

Have extended the small craft advisories for the atlantic through
mid Monday morning, as latest guidance indicates wind speeds of
at least 20 kt through this period.

Aviation...

vfr conditions will prevail throughout the next 24 hours.

The exception will be brief on and off periods of MVFR ceiling
mainly at the east coast sites although it cannot be totally ruled
out at apf either. Winds will remain out of the east-southeast
around 15-20 knots this morning and evening and increase a bit
during the day while remaining gusty. Dry conditions will also
prevail as high pressure remains over the region outside very brief
light rain showers possible along east coast sites. But chances are
so small that do not even warrant mention of vcsh at this time. Will
amend if needed.

Beach forecast...

strong southeast winds will continue the high risk of rip currents
along the atlantic beaches through at least Monday morning. The rip
current risk will slowly lower by early next week as winds begin
to weaken.

Fire weather...

high pressure to the north of the region will maintain warm weather,
especially across the western interior, and breezy east southeast
winds. Wind and rh critical thresholds may be reached this afternoon
across interior and metro regions of collier county. If mixing occurs
and dewpoints drop below current the forecast values, rh would
drop below 40 percent, and conditions would then be ripe to
upgrade to a red flag warning. Otherwise, mainly dry weather is
expected across the region with a few light showers possible along
the east coast metro. By early next week, increasing moisture
will result in the chance of afternoon showers and thunderstorms,
mainly over the interior.

Preliminary point temps/pops
West palm beach 85 76 87 74 / 20 20 20 20
fort lauderdale 85 77 85 76 / 20 20 20 20
miami 86 77 86 76 / 20 20 20 10
naples 93 73 89 72 / 10 10 20 20

Mfl watches/warnings/advisories
Fl... Fire weather watch from 2 pm this afternoon to 7 pm edt this
evening for flz069-070.

High rip current risk through Monday morning for flz168-172-173.

Am... Small craft advisory until 8 am edt Monday for amz630-650-651-
670-671.

Gm... Small craft advisory until 11 am edt this morning for gmz676.

Update... 54/bnb
discussion... 27/jt
marine... 27/jt
aviation... 54/bnb
beach forecast... 27/jt
fire weather... 27/jt


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VAKF1 - 8723214 - Virginia Key, FL 4 mi45 min E 13 G 18 80°F 81°F1019.1 hPa (+0.0)
FWYF1 - Fowey Rocks, FL 14 mi45 min ESE 22 G 23 79°F 79°F1020.2 hPa (+0.0)
PVGF1 - Port Everglades Channel, FL 21 mi45 min SE 13 G 17 81°F 1020 hPa (+0.0)71°F
HCEF1 - Highway Creek, FL 40 mi165 min 80°F
LSNF1 - Long Sound, FL 41 mi105 min 80°F
LBSF1 - Little Blackwater, FL 42 mi165 min 80°F
TCVF1 - Trout Cove, FL 45 mi165 min 80°F
BWSF1 - Blackwater Sound, FL 45 mi165 min 81°F
DKKF1 - Duck Key, FL 46 mi165 min 80°F
TRRF1 - Taylor River, FL 47 mi105 min 82°F
WIWF1 - Willy Willy, FL 49 mi105 min 81°F
CANF1 - Cane Patch, FL 49 mi165 min 81°F
LMDF1 - Little Madeira, FL 49 mi105 min 80°F
BDVF1 - Broad River, FL 49 mi105 min 82°F

Wind History for Virginia Key, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Miami, Miami International Airport, FL7 mi52 minE 17 G 2310.00 miMostly Cloudy84°F69°F61%1019.9 hPa
Miami, Opa Locka Airport, FL10 mi52 minESE 15 G 2410.00 miMostly Cloudy82°F69°F65%1020 hPa
Hollywood, North Perry Airport, FL15 mi52 minESE 21 G 2910.00 miMostly Cloudy and Breezy85°F69°F59%1020.2 hPa
Miami, Kendall-Tamiami Executive Airport, FL17 mi52 minSE 16 G 2410.00 miMostly Cloudy85°F69°F59%1019.5 hPa
Fort Lauderdale, Fort Lauderdale / Hollywood International Airport, FL19 mi52 minSE 2210.00 miMostly Cloudy and Breezy82°F70°F67%1019.6 hPa
Homestead Air Force Base, FL24 mi47 minE 17 G 2410.00 miMostly Cloudy83°F73°F73%1019.6 hPa

Wind History from MIA (wind in knots)
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Last 24hrSE12
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1 day agoSE12SE13E14E12
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2 days agoSE10SE12SE11
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G21

Tide / Current Tables for San Marino Island, Florida
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San Marino Island
Click for Map
Sun -- 12:52 AM EDT     2.64 feet High Tide
Sun -- 06:44 AM EDT     Sunrise
Sun -- 07:05 AM EDT     -0.05 feet Low Tide
Sun -- 10:40 AM EDT     Moonrise
Sun -- 01:06 PM EDT     2.39 feet High Tide
Sun -- 07:26 PM EDT     -0.30 feet Low Tide
Sun -- 07:51 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.52.62.41.91.30.60.1-00.10.51.11.72.22.42.31.81.20.60-0.3-0.20.10.71.4

Tide / Current Tables for Miami Harbor Entrance, Florida Current
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Miami Harbor Entrance
Click for Map
Sun -- 01:28 AM EDT     -0.00 knots Slack
Sun -- 04:39 AM EDT     -1.75 knots Max Ebb
Sun -- 06:44 AM EDT     Sunrise
Sun -- 07:38 AM EDT     0.00 knots Slack
Sun -- 10:23 AM EDT     2.09 knots Max Flood
Sun -- 10:40 AM EDT     Moonrise
Sun -- 01:40 PM EDT     -0.00 knots Slack
Sun -- 04:42 PM EDT     -1.80 knots Max Ebb
Sun -- 07:51 PM EDT     Sunset
Sun -- 07:59 PM EDT     0.00 knots Slack
Sun -- 11:08 PM EDT     2.35 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.90.7-0.6-1.4-1.7-1.7-1.5-0.80.51.72.12.11.80.9-0.4-1.4-1.7-1.8-1.6-1.101.42.22.3

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 (12,3,4,5)
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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.