Saturday, August19, 2017 L-36.com


Marine Weather and Tides
Beacon Square, 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 7:02AMSunset 8:06PM Saturday August 19, 2017 2:30 PM EDT (18:30 UTC) Moonrise 3:42AMMoonset 5:35PM Illumination 7% Phase: Waning Crescent; Moon at 27 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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GMZ830 Tampa Bay Waters- 956 Am Edt Sat Aug 19 2017
This afternoon..Northeast winds around 5 knots then becoming northwest around 10 knots in the afternoon. Bay and inland waters a light chop. Isolated Thunderstorms.
Tonight..North winds around 10 knots then becoming east around 5 knots after midnight. Bay and inland waters a light chop.
Sunday..East winds around 10 knots. Bay and inland waters a light chop. Isolated Thunderstorms.
Sunday night..East winds around 10 knots. Bay and inland waters a light chop. Scattered Thunderstorms.
Monday..East winds around 10 knots. Bay and inland waters a light chop. Scattered Thunderstorms.
Monday night..East winds around 10 knots. Bay and inland waters a light chop.
Tuesday..Northeast winds around 10 knots. Bay and inland waters a light chop. Scattered Thunderstorms.
Tuesday night..East winds around 10 knots. Bay and inland waters a light chop. Isolated Thunderstorms.
Wednesday..Northeast winds around 5 knots. Bay and inland waters smooth. Scattered Thunderstorms.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 956 Am Edt Sat Aug 19 2017
Synopsis..Surface high pressure will remain across the region through the weekend with light winds and slight seas. Winds are expected to increase some with easterly surges early next week as the pressure gradient tightens a bit between low pressure to the south and high pressure to the north. Otherwise, the primary marine concern will be daily scattered Thunderstorms which may produce dangerous lightning, locally stronger winds, and choppy seas.

7 Day Forecast for Marine Location Near Beacon Square, FL
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location: 28.23, -82.77     debug


Area Discussion for - Tampa Bay, FL
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Fxus62 ktbw 191829
afdtbw
area forecast discussion
national weather service tampa bay ruskin fl
229 pm edt Sat aug 19 2017

Short term (tonight - Sunday)
In the mid upper levels, an upper level low over the eastern gulf of
mexico will continue moving westward toward texas through the
weekend. Mid-level ridging near bermuda extends west-southwest over
eastern florida. On the surface, subtropical high pressure near
bermuda ridges west-southwest over florida and into the gulf of
mexico. This will produce a predominant easterly wind flow over the
florida peninsula on Sunday. This will favor the development of
thunderstorms early in the afternoon along the east coast and late
evening along the west coast of florida as the storms move westward.

Temperatures will remain around seasonal averages with daytime highs
in the low 90's and overnight lows in the mid to upper 70's.

Long term (Sunday night - Saturday)
A tropical wave will be exiting to the west into the gulf of mexico
early on Monday. Lingering moisture associated with the wave along
with the sea breezes will support scattered showers and storms over
the region on Monday with pops in the 20 to 40 percent range.

Thereafter models show drier air over the atlantic advecting in over
the forecast area during Monday night and Tuesday in the wake of the
wave which will result in lower rain chances (pops 20 to 30 percent)
across the forecast area on Tuesday, especially across central zones
where the driest air will be most prevalent. Another tropical wave
will approach and move across the region and into the gulf during
Tuesday night into Wednesday. Increasing moisture (pw's increasing
to 2+ inches) associated with this wave will again increase rain
chances across the area during Wednesday and Thursday with scattered
to numerous showers and storms expected each day. The high moisture
content combined with slow moving storms will favor locally heavy
rainfall amounts in some locations.

During Thursday night into Friday an upper level trough and
attendant cold front to the north will push the surface ridge axis
to the south to lie across the southern peninsula. With ample
moisture remaining in place along with the sea breeze and troughing
aloft scattered to numerous showers and storms will continue through
the period. The onshore flow will favor late night and early morning
showers and storms along the coast with the convection then moving
to inland areas during the afternoon.

On Saturday the upper level trough axis will shift east into the
atlantic as upper level ridging noses in from the northwest as the
surface ridge axis lifts back to the north some with scattered to
numerous diurnal sea breeze driven showers and storms expected
during the afternoon. It will remain very warm and muggy with
temperatures running some 3 to 5 degrees above normal through the
period. Overnight low temperatures will range from the mid 70s
inland areas, to the upper 70s to around 80s along the coast, while
daytime highs will climb into the lower 90s along the coast, and mid
to upper 90s inland with the high humidity levels supporting heat
indices in the 100 to 105 degree range each afternoon.

Aviation
Vfr conditions can be expected through much of the day with drier
mid to upper levels. Will cover any isolated storms with vcts this
afternoon with localized and brief restrictions possible from 18z-
21z. No other aviation impacts expected.

Marine
High pressure in the gulf of mexico will influence the weather over
the coastal waters tonight and into early Sunday. Winds will remain
light out of the north tonight, then veering to the east on Sunday
afternoon as high pressure near bermuda ridges west over the region.

This will be the dominant weather feature through the period. With
the easterly flow, showers and storms will be more common later
evening and into the early morning hours each day. The main hazard
will be dangerous lightning, locally higher winds and choppy seas
near thunderstorms.

Fire weather
Abundant moisture combined with daily rain chances will keep
humidity levels above critical levels through early next week with
no fire weather issues expected.

Preliminary point temps pops
Tpa 80 93 78 93 10 50 20 30
fmy 77 90 77 95 10 60 30 20
gif 76 92 76 94 20 50 20 30
srq 77 92 77 93 10 60 30 20
bkv 74 93 76 94 10 50 20 30
spg 80 92 79 93 10 60 20 30

Tbw watches warnings advisories
Fl... None.

Gulf waters... None.

Short term aviation marine fire weather... 74 wynn
mid term long term decision support... 57 mcmichael


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FHPF1 - Fred Howard Park, FL 6 mi96 min WNW 6 G 8 87°F 1017 hPa
ARPF1 - APK - Aripeka, FL 15 mi96 min NW 11 G 14 85°F 1016.5 hPa
CWBF1 - 8726724 - Clearwater Beach, FL 18 mi42 min NW 7 G 9.9 85°F 89°F1016.2 hPa
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 27 mi54 min SSW 5.1 G 8.9
TSHF1 - 8726667 - East Bay Causeway, FL 28 mi48 min W 4.1 G 8.9
OPTF1 - 8726607 - Old Port Tampa, FL 28 mi42 min WSW 2.9 G 4.1 87°F 89°F1016 hPa
MCYF1 28 mi42 min 89°F
SAPF1 - 8726520 - St. Petersburg, FL 33 mi48 min SSE 4.1 G 7 88°F 89°F1016.3 hPa
CLBF1 34 mi96 min WSW 6 G 8 87°F 1015.3 hPa
MTBF1 40 mi42 min WNW 2.9 G 4.1 86°F 1016.1 hPa
PMAF1 42 mi42 min 86°F 92°F1015.2 hPa
42098 45 mi60 min 91°F1 ft

Wind History for Clearwater Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Tampa, Tampa International Airport, FL22 mi37 minSW 810.00 miMostly Cloudy90°F75°F63%1015.6 hPa
St. Petersburg/Clearwater Airport, FL23 mi37 minVar 410.00 miLight Rain85°F75°F72%1015.9 hPa
Brooksville, Hernando County Airport, FL24 mi37 minW 810.00 miMostly Cloudy89°F73°F61%1015.9 hPa

Wind History from TPA (wind in knots)
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Last 24hrW7NW8W9
G16
NW7N9CalmE4NE5SE4S7CalmE3E3S5CalmCalmCalmCalmCalmCalmSW5S6SW6SW8
1 day agoN14
G18
3NE4NE5NE5CalmE5E4E4S5CalmCalmCalmS3CalmCalmSE3SE3CalmE3SW6SW6SW14N5
2 days agoSW9SE10
G16
4E3S3SW3CalmNW6CalmE3SE3CalmS3CalmCalmCalmCalmCalmCalmCalmSW4SW7W7Calm

Tide / Current Tables for Gulf Harbors, Florida
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Gulf Harbors
Click for Map
Sat -- 12:01 AM EDT     2.85 feet High Tide
Sat -- 04:42 AM EDT     Moonrise
Sat -- 05:36 AM EDT     1.55 feet Low Tide
Sat -- 07:03 AM EDT     Sunrise
Sat -- 11:04 AM EDT     3.69 feet High Tide
Sat -- 06:34 PM EDT     Moonset
Sat -- 06:43 PM EDT     -0.19 feet Low Tide
Sat -- 08:05 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.82.82.52.21.81.61.61.92.433.53.73.63.22.61.81.10.4-0.1-0.20.20.91.72.4

Tide / Current Tables for Anclote Key, southern end, Florida
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Anclote Key
Click for Map
Sat -- 04:38 AM EDT     1.12 feet Low Tide
Sat -- 04:42 AM EDT     Moonrise
Sat -- 07:03 AM EDT     Sunrise
Sat -- 10:26 AM EDT     3.56 feet High Tide
Sat -- 05:45 PM EDT     -0.14 feet Low Tide
Sat -- 06:34 PM EDT     Moonset
Sat -- 08:05 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.72.421.51.21.11.422.63.23.53.53.22.71.91.20.4-0-0.10.20.71.52.22.7

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 Tampa Bay, FL (14,3,4,5)
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Ground Weather Radar Station Tampa Bay Area, 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.