Thursday, March23, 2017 L-36.com


Marine Weather and Tides
Miami, 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 7:19AMSunset 7:34PM Thursday March 23, 2017 2:10 AM EDT (06:10 UTC) Moonrise 3:10AMMoonset 2:25PM Illumination 20% Phase: Waning Crescent; Moon at 25 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- 916 Pm Edt Wed Mar 22 2017
Rest of tonight..South southeast winds around 5 knots becoming northeast after midnight. Seas 2 to 3 feet. Period 10 seconds. Intracoastal waters a light chop.
Thursday..Northeast winds 10 to 15 knots becoming east northeast 20 to 25 knots in the afternoon. Seas 2 to 3 feet building to 5 to 7 feet with occasional seas to 9 feet in the afternoon. Period 4 seconds. Intracoastal waters rough in exposed areas. A chance of showers in the morning...then showers likely and a slight chance of Thunderstorms in the afternoon.
Thursday night..East northeast winds 20 to 25 knots with gusts to around 35 knots. Seas 6 to 8 feet with occasional seas to 10 feet along the coast and 8 to 10 feet with occasional to 13 feet in the gulf stream. Period 8 seconds. North swell 3 feet after midnight. Intracoastal waters rough in exposed areas. A chance of showers.
Friday..East winds 20 to 25 knots with gusts to around 35 knots. Seas 5 to 7 feet with occasional seas to 9 feet along the coast and 8 to 10 feet with occasional to 13 feet in the gulf stream. Period 8 seconds. North swell 3 feet in the morning. Intracoastal waters rough in exposed areas. A slight chance of showers.
Friday night..East winds 20 to 25 knots. Seas 5 to 7 feet with occasional seas to 9 feet along the coast and 6 to 8 feet with occasional to 10 feet in the gulf stream. Intracoastal waters rough in exposed areas. A slight chance of showers.
Saturday and Saturday night..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas to 8 feet. Intracoastal waters choppy in exposed areas.
Sunday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters a moderate chop.
Sunday night..East winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters choppy in exposed areas.
Monday..East northeast 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- 916 Pm Edt Wed Mar 22 2017
Synopsis..Generally good boating conditions will continue into early Thursday with seas 4 feet or less and north/northeast winds under 15 knots. Beginning late Thursday, marine conditions will rapidly deteoriate as a weak frontal boundary moves across the region with scattered showers. In the wake of the frontal boundary, hazardous marine conditions for small craft are likely with increasing northeast flow and seas 7 feet or greater, especially for the atlantic waters. Hazardous marine conditions will also be possible for the gulf waters, lake okeechobee, and biscayne bay as well. Hazardous marine conditions, especially for the atlantic waters, are expected to continue through much of the weekend. The approximate location of the west wall of the gulf stream as of mar 21, 2017 at 1200 utc... 12 nautical miles east southeast of fowey rocks. 18 nautical miles east of port everglades. 15 nautical miles east of lake worth. 18 nautical miles east southeast 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 230602
afdmfl
area forecast discussion
national weather service miami fl
202 am edt Thu mar 23 2017

Aviation
GenerallyVFR conditions should prevail, though sub-vfr conditions
are possible with overnight fog possible at apf. Showers and
thunderstorms will be possible today, with a focus on the east
coast during the afternoon and evening.

Prev discussion /issued 745 pm edt Wed mar 22 2017/
update...

as of 745 pm edt... Current forecast on track with only minor
updates made to account for the latest trends in observations.

Previous discussion highlights ongoing forecast well and is below.

Prev discussion... /issued 309 pm edt Wed mar 22 2017/
discussion...

near term /through 6 am Thursday morning/...

as of 305 pm edt... High pressure continues to weaken across the
region as a frontal boundary approaches from the north, currently
making its way into northern florida as of the mid-afternoon
hours. Ahead of the front, another pleasant spring day continues
with mostly clear skies and temperatures reaching into the 80s.

For the remainder of today and into tonight, fair weather is
expected to continue, with increasing cloud cover tonight from
north to south along with increasing low-level moisture. This
increasing low-level moisture will lead to another night of patchy
to areas of fog across portions of the interior and gulf coast,
especially in vicinity of any ongoing wildfires. Low temperatures
will range from near 60 in the interior and gulf coast to low and
mid 60s along the east coast.

Short term /6 am Thursday morning through Friday night/...

the aforementioned frontal boundary will continue to weaken and
eventually wash out as it moves into south florida Thursday into
early Friday. Despite the decaying frontal boundary, enough low-
level moisture will be pooled out ahead of it, along with weak
overrunning/isentropic lift, to help promote scattered showers
across much of the region, especially for the latter half of
Thursday. Model guidance does hint at some mid-level instability as
well, so have added a slight chance of thunder mainly across
portions of the lake region and palm beach county. Overall rainfall
amounts are expected to generally be light, but a few areas could
see a nice soaking rainfall of around a half an inch, helping the
ongoing drought situation.

Behind the front, northeasterly winds will become brisk to
occasionally breezy at times, especially along the east coast where
wind gusts of 20-30 mph will be common at times late Thursday and
continuing into the day Friday. Lingering showers along the east
coast will also continue on Friday, again light in nature.

High temperatures on Thursday will range from the upper 70s in
northeast areas to low and mid 80s in southwest areas, warmest where
significant cloud cover holds off the longest. Highs on Friday
behind the front will be slightly cooler, ranging from the mid 70s
to around 80. Low temperatures Thursday and Friday night will
generally be in the 60s, with a few upper 50s readings in the
interior.

Long term /Saturday through Tuesday/...

the long term period will be characterized by upper-level ridging
aloft and brisk easterly flow as the region remains under a tight
pressure gradient from strong surface high pressure in the western
atlantic basin. With this synoptic pattern in place, generally fair
weather will prevail, although with the flow off the atlantic,
enough low-level moisture will be in place to allow for a periodic
isolated shower and increased clouds mainly along the east coast.

Temperatures will be near to slightly above normal for the long term
period.

Marine...

small craft advisory conditions possible across portions of the
local waters as early as late Thursday...

generally good boating conditions will continue into early Thursday
with seas 4 feet or less and north/northeast winds under 15 knots.

Beginning late Thursday, marine conditions will rapidly deteoriate
as a weak frontal boundary moves across the region with scattered
showers. In the wake of the frontal boundary, hazardous marine
conditions for small craft are likely with increasing northeast flow
and seas 7 feet or greater, especially for the atlantic waters.

Hazardous marine conditions will also be possible for the gulf
waters, lake okeechobee, and biscayne bay as well.

Hazardous marine conditions, especially for the atlantic waters, are
expected to continue through much of the weekend.

Beach forecast...

a moderate risk of rip currents will continue for the atlantic
beaches through most of Thursday, with the main contributor being
some northeasterly swell 2 feet or less. The threat for rip currents
for the atlantic beaches looks to increase to a high risk beginning
late Thursday and continuing into the weekend with increasing
onshore flow in the wake of a frontal passage.

Fire weather...

relative humidity values may reach critical levels across portions
of south florida through the remainder of this afternoon. Despite
these values, sustained 20ft winds are expected to remain under 15
mph with only fair dispersion. However, conditions will continue to
be closely monitored for a heightened fire weather risk into the
evening hours as erc values are forecast to be in the low 30s across
much of south florida.

Fire weather concerns will diminish Thursday as an approaching
frontal boundary brings scattered showers to much of the region, and
continue to remain diminished into the weekend with relative
humidity values being above critical levels.

Preliminary point temps/pops
West palm beach 77 68 78 70 / 60 30 20 20
fort lauderdale 78 69 78 69 / 60 40 20 20
miami 81 68 79 69 / 50 30 20 20
naples 81 62 81 62 / 40 10 10 10

Mfl watches/warnings/advisories
Fl... None.

Am... None.

Gm... None.

Aviation... 02/rag


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VAKF1 - 8723214 - Virginia Key, FL 4 mi41 min W 1.9 G 5.1 70°F 1020.6 hPa
FWYF1 - Fowey Rocks, FL 14 mi71 min WSW 8 G 8.9 71°F 74°F1020.6 hPa (+0.5)
PVGF1 - Port Everglades Channel, FL 22 mi29 min W 5.1 G 8 71°F 1020.2 hPa58°F
LSNF1 - Long Sound, FL 40 mi131 min 75°F
TRRF1 - Taylor River, FL 46 mi131 min 76°F
WIWF1 - Willy Willy, FL 47 mi131 min 78°F
BDVF1 - Broad River, FL 47 mi131 min 76°F
LMDF1 - Little Madeira, FL 48 mi131 min 74°F
NRRF1 49 mi131 min 75°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 mi18 minW 410.00 miFair68°F57°F68%1020.5 hPa
Miami, Opa Locka Airport, FL10 mi18 minWNW 610.00 miFair67°F57°F73%1020.6 hPa
Hollywood, North Perry Airport, FL15 mi18 minWNW 610.00 miFair67°F57°F73%1020.8 hPa
Miami, Kendall-Tamiami Executive Airport, FL16 mi18 minNW 410.00 miFair61°F55°F81%1020.5 hPa
Fort Lauderdale, Fort Lauderdale / Hollywood International Airport, FL20 mi18 minW 710.00 miFair69°F57°F68%1020 hPa
Homestead Air Force Base, FL23 mi13 minN 010.00 miFair62°F60°F94%1020 hPa

Wind History from MIA (wind in knots)
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Last 24hrW4NW4NW4W3CalmCalmNW43NW6W64NW5W35SW6W6SE8S8S6S3S6SW4W3W4
1 day agoCalmN3CalmCalmCalmNW3N33N5E5SE9E6
G16
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E10E9E8SE5CalmW4W3NW3
2 days agoN5N6N4N4N4N4N4NE5E10NE13
G19
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G16
E9E10NE9E7NE6NE6E4NE3Calm

Tide / Current Tables for Miami, Marina, Biscayne Bay, Florida
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Miami
Click for Map
Thu -- 04:09 AM EDT     Moonrise
Thu -- 06:02 AM EDT     1.88 feet High Tide
Thu -- 07:21 AM EDT     Sunrise
Thu -- 12:23 PM EDT     0.35 feet Low Tide
Thu -- 03:25 PM EDT     Moonset
Thu -- 06:18 PM EDT     1.86 feet High Tide
Thu -- 07:33 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.40.71.11.51.81.91.81.51.20.80.50.40.40.711.41.71.91.81.61.20.80.4

Tide / Current Tables for Miami Harbor Entrance, Florida Current
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Miami Harbor Entrance
Click for Map
Thu -- 12:30 AM EDT     0.00 knots Slack
Thu -- 02:59 AM EDT     1.45 knots Max Flood
Thu -- 03:49 AM EDT     1.44 knots Min Flood
Thu -- 04:06 AM EDT     1.44 knots Max Flood
Thu -- 04:09 AM EDT     Moonrise
Thu -- 06:55 AM EDT     -0.00 knots Slack
Thu -- 07:21 AM EDT     Sunrise
Thu -- 10:58 AM EDT     -0.92 knots Max Ebb
Thu -- 01:03 PM EDT     0.00 knots Slack
Thu -- 03:25 PM EDT     1.34 knots Max Flood
Thu -- 03:25 PM EDT     Moonset
Thu -- 07:09 PM EDT     -0.00 knots Slack
Thu -- 07:33 PM EDT     Sunset
Thu -- 11:05 PM EDT     -1.05 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.40.51.31.41.41.30.8-0.1-0.6-0.8-0.9-0.9-0.7-00.91.31.31.310.1-0.6-0.9-1-1

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 (2,6,7,8)
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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.