Monday, August21, 2017 L-36.com


Marine Weather and Tides
Miami Beach, 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 11:45 AM EDT (15:45 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
    EDIT      (on/off)   Help
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- 1030 Am Edt Mon Aug 21 2017
Rest of today..East northeast winds around 15 knots with gusts to around 25 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Period 4 seconds. Intracoastal waters a moderate chop. A slight chance of showers and Thunderstorms.
Tonight..Along the coast, northeast winds 10 to 15 knots. In the gulf stream, east northeast winds 15 to 20 knots becoming east southeast 5 to 10 knots after midnight. Seas 2 to 4 feet with occasional seas to 5 feet. Period 5 seconds. Intracoastal waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Tuesday..South southeast winds 5 to 10 knots. Seas 2 to 3 feet. Period 5 seconds. Intracoastal waters a light chop. Showers likely and a chance of Thunderstorms.
Tuesday night..South southeast winds 10 to 15 knots. Seas around 2 feet. Period 3 seconds. Intracoastal waters a light chop. A chance of Thunderstorms late in the evening. A chance of showers through the night. A slight chance of Thunderstorms after midnight.
Wednesday..South southeast winds around 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 2 to 3 feet. Intracoastal waters a light chop. Showers and Thunderstorms likely.
Thursday and Thursday night..South southwest winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a light chop. Showers and Thunderstorms likely.
Friday..Southwest winds 10 to 15 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- 1030 Am Edt Mon Aug 21 2017
Synopsis..East winds around 15 knots will continue through the day, before picking up from the east-northeast this evening into early Tuesday morning as a tropical wave approaches. Winds and seas gradually diminish starting Tuesday, becoming more southerly late in the week. Generally dry conditions are expected today, with showers and storms increasing tonight from east to west with the approaching tropical wave. Coverage is expected to remain high through the remainder of the week as we remain in an unsettled pattern.
Gulf stream hazards..Winds will increase to 15 to 20 knots from the east-northeast late tonight. Seas will be around 5 feet in the gulf stream this evening. 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 Beach, FL
   Hourly   EDIT   Help
location: 25.79, -80.16     debug


Area Discussion for - Miami-South Florida, FL
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 kmfl 211504
afdmfl
area forecast discussion
national weather service miami fl
1104 am edt Mon aug 21 2017

Update
Previous forecast is on track, and there are no surprises in the
morning sounding. Today will be on the dry side before a tropical
wave approaches tonight. Satellite imagery shows scattered cumulus
clouds spreading across most of south florida this morning
streaming from east to west. There are very few isolated showers
occurring. Can't rule out an isolated shower and maybe even a few
lightning strikes with one or two weak thunderstorms this
afternoon. However, strong storms are not expected today and
coverage of any showers will be minimal with just a 10 percent
chance of rain through the day for most of south florida.

Expect scattered clouds to continue today with generally good
weather for viewing today's eclipse. There will be plenty of clear
areas in between clouds for eclipse viewing.

Prev discussion issued 746 am edt Mon aug 21 2017
aviation...

vfr conditions will prevail today with little in the way of any
shower activity. Expect mainly east winds around 15 kts with gusts
around 20-23 kts likely during the midday and afternoon hours for
the east coast terminals of mia, fll, pbi. A tropical wave will
approach from the east tonight, so carrying vcsh for east coast
terminals after 00z. Shower activity overnight will likely be
mostly isolated. Any showers would be in the form of short
duration passing showers and would not have a significant impact
on airport operations.

Prev discussion... Issued 407 am edt Mon aug 21 2017
discussion...

today: drier air is upon us as derived tpw satellite estimates mark
out well the subsident airmass moving in from our east with pw
values only around 1.2 inches. If these values managed to make it
into the area without modifying, they would be near the lowest
values recorded for this time of year.

Rain chances will be much below normal for this time of year,
isolated at best, and a few models keep the day entirely dry. With
forecast soundings still showing a shallow capping inversion above
the moist boundary layer, this is an entirely reasonable scenario.

However it is tough to bet again at least a few showers storms along
the seabreeze in august.

The forecast for the eclipse viewing period across south florida is
for partly cloudy skies under scattered cumulus clouds. There may be
a shower storm or two later in the afternoon, with the best shot for
this over the interior and gulf coast.

Tonight and Tuesday: the next tropical wave (92l) is expected to
continue its westward march today, reaching the NW bahamas this
evening and moving across south florida on Tuesday. This wave
appears to be slower-moving, and it will begin interacting with the
trough frontal axis across the northeastern us, and likely stall
over or near south florida.

Current timing based on satellite has the plume of moisture
associated with this feature arriving this evening. Coverage of
showers and storms is expected to quickly ramp up overnight into
Tuesday, especially once the wave axis crosses the area Tuesday
morning. Numerous showers with embedded storms are expected during
the day on Tuesday. As has been highlighted the past few days, there
will be the potential for periods of heavy rain. There is potential
for much heavier local amounts than the areal averages, especially
along the east coast with coastal convergence. Wpc has already
placed much of the area under a marginal risk for excessive
rainfall for this period.

Wednesday through Saturday: deepening mid-upper level trough across
the eastern us will absorb the remnant low-level vorticity from 92l
late in the week, while a weakening front pushes into northern
florida. The south-southwesterly flow that develops across the
region as a result of these features will continue to pump tropical
moisture across the area. Several models still show the potential
for cyclogenesis over the gulf stream northeast of our region
late week as the remnants of 92l interact with the frontal
boundary. NHC continues to monitor this feature, and has a 40%
chance of development into a tropical cyclone in 5 days when it is
in our vicinity.

Regardless of whether a surface low forms or not, the combination of
a trailing shear axis and deep south southwest flow providing a
continuous moisture stream, which would argue for periods of rain
and thunderstorms (especially east coast). The threat with this
pattern also remains for heavy rain at times, with 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 east-southeast winds will continue
through around daybreak in the wake of yesterday's tropical wave.

Speeds through most of the day will be around 10-15kts, then picking
up again from the east-northeast this evening into Tuesday morning
as another tropical wave approaches. Winds become more southerly at
10-15kts late week as the western atlantic ridge axis drops further
south. Choppy seas can be expected, especially in the open waters,
with wave heights 3-4ft, occasionally 5ft in the atlantic.

Mostly dry conditions are expected today, before increasing late
tonight from east to west with another tropical wave. Coverage is
expected to remain high through the remainder of the week as we
remain in an unsettled pattern. Winds and waves will be locally
higher near any thunderstorms.

Beach forecast... Breezy onshore flow will keep a moderate risk
of rip currents at the atlantic beaches today. The risk is
expected to diminish by mid week as winds subside.

Preliminary point temps pops
West palm beach 92 81 91 79 10 50 70 50
fort lauderdale 91 81 90 79 10 50 60 50
miami 93 81 91 79 10 30 60 50
naples 96 79 92 77 10 10 60 40

Mfl watches warnings advisories
Fl... None.

Am... None.

Gm... None.

Update... 98 abh
discussion... 88 alm
marine... 88 alm
aviation... 98 abh
beach forecast... 88 alm


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VAKF1 - 8723214 - Virginia Key, FL 4 mi46 min E 11 G 14 86°F 87°F1019 hPa (+2.2)
FWYF1 - Fowey Rocks, FL 14 mi46 min ESE 16 G 17 85°F 86°F1019.8 hPa (+2.1)
PVGF1 - Port Everglades Channel, FL 21 mi46 min E 8 G 11 87°F 1019.7 hPa (+2.2)75°F
HCEF1 - Highway Creek, FL 40 mi166 min 83°F
LSNF1 - Long Sound, FL 41 mi106 min 85°F
LBSF1 - Little Blackwater, FL 42 mi166 min 85°F
TCVF1 - Trout Cove, FL 45 mi166 min 85°F
BWSF1 - Blackwater Sound, FL 45 mi166 min 85°F
DKKF1 - Duck Key, FL 46 mi166 min 85°F
TRRF1 - Taylor River, FL 47 mi106 min 85°F
WIWF1 - Willy Willy, FL 49 mi106 min 84°F
CANF1 - Cane Patch, FL 49 mi166 min 84°F
LMDF1 - Little Madeira, FL 49 mi106 min 85°F
BDVF1 - Broad River, FL 49 mi106 min 84°F

Wind History for Virginia Key, FL
(wind in knots)    EDIT      (on/off)   Help
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
Last
24hr
--
NE4
NE8
G12
NE5
G8
NE7
G10
NE10
G13
NE10
G14
NE10
NE7
NE11
G15
NE16
G20
E14
G20
E11
E11
G14
E8
G13
E11
G14
E11
G14
E12
G16
E12
G16
E12
G16
E14
G18
E14
G17
E12
G16
E11
G14
1 day
ago
NE7
G11
NE5
G9
NE6
G10
NE9
NE8
G11
E14
G17
NE10
G13
NE9
E8
G13
E9
G12
E12
G15
E11
G14
E12
G17
E6
N2
G6
NE2
N2
G5
N2
G6
N2
G5
W5
G11
N4
NE9
G16
NE9
G12
E5
2 days
ago
NE6
NE9
G15
NE5
NE8
E6
G11
E10
G14
E7
G11
E6
G9
E8
G11
E7
G10
NE5
NE4
G7
N3
NE4
G7
E4
E6
G9
NE7
G10
E8
E11
G14
E7
E5
NE5
NE4
G8
NE6

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Miami, Miami International Airport, FL7 mi53 minE 1310.00 miMostly Cloudy90°F75°F62%1019.5 hPa
Miami, Opa Locka Airport, FL10 mi53 minE 1210.00 miA Few Clouds90°F75°F63%1019.6 hPa
Hollywood, North Perry Airport, FL15 mi53 minESE 13 G 2010.00 miA Few Clouds91°F75°F59%1019.9 hPa
Miami, Kendall-Tamiami Executive Airport, FL17 mi53 minESE 1010.00 miMostly Cloudy90°F75°F62%1019.2 hPa
Fort Lauderdale/Hollywood International Airport, FL19 mi53 minE 1410.00 miMostly Cloudy88°F75°F68%1019.3 hPa
Homestead Air Reserve Base, FL24 mi48 minESE 7 G 1610.00 miA Few Clouds89°F76°F67%1019.6 hPa

Wind History from MIA (wind in knots)
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
Last 24hrCalmE5E7E9E9NE10E9E9NE7NE7E16
G20
E13E12E12E7E8E7E9E9E9E10E12E13E13
1 day agoE8
G15
E9
G15
E7
G16
E8NE8
G17
E11
G20
E9
G18
E13
G19
E10E8SE11E9SE10SE6CalmCalmNE3NE4CalmNE9SE7NE7NE5E6
2 days agoE10E8SE8
G14
SE10
G17
E11E12E10
G18
E11E10SE8CalmNW5NW3NW4NW3NW3NE3NE3E6E5E3E45NE5

Tide / Current Tables for San Marino Island, Florida
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
San Marino Island
Click for Map
Mon -- 03:23 AM EDT     -0.04 feet Low Tide
Mon -- 06:41 AM EDT     Moonrise
Mon -- 06:56 AM EDT     Sunrise
Mon -- 09:28 AM EDT     2.66 feet High Tide
Mon -- 02:31 PM EDT     New Moon
Mon -- 03:44 PM EDT     -0.27 feet Low Tide
Mon -- 07:50 PM EDT     Sunset
Mon -- 07:57 PM EDT     Moonset
Mon -- 10:00 PM EDT     2.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.50.90.3-000.411.72.32.62.62.31.60.90.3-0.2-0.300.61.32.12.62.82.6

Tide / Current Tables for Miami Harbor Entrance, Florida Current
   EDIT      (on/off)   Help   One Week of Data
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
       (on/off)   Help
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 (11,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Miami, FL
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.