Thursday, March30, 2017 L-36.com


Marine Weather and Tides
Rotonda, 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 7:18AMSunset 7:46PM Thursday March 30, 2017 6:45 AM EDT (10:45 UTC) Moonrise 8:24AMMoonset 9:43PM Illumination 9% Phase: Waxing Crescent; Moon at 3 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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GMZ856 Coastal Waters From Bonita Beach To Englewood Fl Out 20 Nm- 354 Am Edt Thu Mar 30 2017
Today..Southeast winds around 10 knots then becoming south in the late morning and afternoon. Seas 2 feet. Bay and inland waters a light chop.
Tonight..South winds 5 to 10 knots then becoming southeast around 15 knots after midnight. Seas 2 to 3 feet. Bay and inland waters a moderate chop.
Friday..South winds around 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop. A slight chance of Thunderstorms in the afternoon.
Friday night..South winds around 15 knots then becoming southwest 5 to 10 knots late in the evening, then becoming west around 5 knots after midnight. Seas 2 to 3 feet. Bay and inland waters a moderate chop. A slight chance of Thunderstorms in the evening.
Saturday..Wind variable less than 5 knots then becoming east around 5 knots late in the morning, then becoming south early in the afternoon then becoming southwest late in the afternoon. Seas 2 feet. Bay and inland waters smooth.
Saturday night..Northwest winds around 5 knots then becoming north after midnight. Seas 2 feet. Bay and inland waters smooth.
Sunday..East winds around 5 knots then becoming south in the afternoon. Seas 2 feet. Bay and inland waters smooth.
Sunday night..Southeast winds around 10 knots. Seas 2 to 3 feet. Bay and inland waters a light chop.
Monday..South winds around 15 knots. Seas 3 to 5 feet. Bay and inland waters a moderate chop. A slight chance of Thunderstorms.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 354 Am Edt Thu Mar 30 2017
Synopsis.. Winds will become onshore with the sea breeze this afternoon and into the evening. A more southerly flow will develop today ahead of an approaching cold front, which will bring shower and possibly some Thunderstorm activity for Friday. Winds this evening and into Friday could increase close to cautionary criteria, otherwise no headlines are expected. Lighter winds and drier conditions return for the weekend as high pressure moves back over the area.

7 Day Forecast for Marine Location Near Rotonda, FL
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location: 26.74, -82.33     debug


Area Discussion for - Tampa Bay, FL
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Fxus62 ktbw 300754
afdtbw
area forecast discussion
national weather service tampa bay ruskin fl
354 am edt Thu mar 30 2017

Short term
Another warm, dry day expected across the area as high pressure
remains in control of our weather. Surface high will shift eastward
during the day allowing winds to become more southerly by the
afternoon, although we should still have a sea breeze right near the
coast. Overall, there should be enough suppression from the ridge to
keep rainfall out of the forecast once again. Temperatures will
remain on the warm side with middle to upper 80s expected, a bit
cooler at the coast courtesy of the seabreeze.

On Friday, a mid/upper level trough will dig into the SE u.S.

Allowing a surface trough to move through our area bringing some
rain chances with it. Mid/upper level support will be moving away
from our area so will likely end up with a broken line of showers
and isolated thunderstorms moving through the area. But with as dry
as it has been the last few months, we will take any rainfall we can
get.

Long term
Progressive pattern continues with upper low over the NE us moves
into the western atlantic as upper ridging builds from the N carib
through the region. Surface high pressure moves N of the area with
low level flow quickly veering easterly bringing atlantic moisture
over the state for a warm and humid weekend.

Next system to move through thru the region next week with southern
stream upper low from the desert SW Sunday quickly moving through
the deep south mon/tue pushing surface storm system and attendant
cold front through area the with a chance of showers and
storms.

Aviation
Vfr conditions are expected through most of the overnight
period. However limited br mainly inland may impact the fog
favoring terminals at lal and pgd which have tempo MVFR toward
dawn. Winds increase from the SE in the morning... Then become
southerly with modest gusts in the afternoon.

Marine
Winds will become onshore with the sea breeze this afternoon and
into the evening. A more southerly flow will develop over
the waters today ahead of an approaching cold front, which
will bring shower and possibly some thunderstorm activity
for Friday. Winds this evening and into Friday could
increase close to cautionary criteria, otherwise no
headlines are expected. Lighter winds and drier conditions
return for the weekend as high pressure moves back over the
area.

Fire weather
Relative humidity values will fall near critical levels east of
the i-75 corridor for this afternoon and may briefly drop just
below 35%, but long durations are not expected and light winds
will preclude red flag conditions. Low-level moisture will
increase for Friday, and relative humidity values are expected
to remain above 35%.

Preliminary point temps/pops
Tpa 84 68 80 66 / 0 10 30 10
fmy 87 66 84 67 / 0 0 20 10
gif 87 65 85 63 / 0 10 30 10
srq 81 66 78 64 / 0 0 30 10
bkv 85 63 82 57 / 0 10 40 10
spg 81 68 80 67 / 0 10 30 10

Tbw watches/warnings/advisories
Fl... None.

Gulf waters... None.

Short term/aviation/marine/fire weather... 11/mckaughan
mid term/long term/decision support... 25/davis


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VENF1 - Venice, FL 24 mi45 min ESE 6 G 6 69°F 73°F1014.6 hPa (-1.2)65°F
FMRF1 - 8725520 - Fort Myers, FL 25 mi45 min ESE 4.1 G 5.1 69°F 81°F1015.3 hPa (-0.4)
42013 - C10 - Navy-2 43 mi75 min SSE 7.8 G 9.7 66°F 71°F

Wind History for Naples, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Punta Gorda, Charlotte County Airport, FL22 mi52 minESE 42.00 miFog/Mist60°F57°F90%1015.9 hPa
Venice Municipal Airport, FL24 mi50 minESE 310.00 mi64°F64°F100%1015.2 hPa

Wind History from PGD (wind in knots)
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Last 24hrCalmCalmE3S5SW4--SW8SW12W13SW13W12W11W12W9NW6NW3NE4CalmCalmCalmCalmCalmCalmSE4
1 day agoCalmCalmSE4SE4S5W75N9NW6--W13W9W13NW8W4N5E3CalmN3NE4NE5NE5NE3Calm
2 days agoNE3NE4NE5NE7E8E7E8N7NE10NE12
G17
NE7NE7NE6W5SW3S5SE4CalmSE3SE3E4E4CalmCalm

Tide / Current Tables for Port Boca Grande, Charlotte Harbor, Florida
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Port Boca Grande
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Thu -- 03:29 AM EDT     1.20 feet High Tide
Thu -- 07:21 AM EDT     Sunrise
Thu -- 08:09 AM EDT     0.44 feet Low Tide
Thu -- 09:23 AM EDT     Moonrise
Thu -- 02:51 PM EDT     1.62 feet High Tide
Thu -- 07:45 PM EDT     Sunset
Thu -- 09:22 PM EDT     -0.22 feet Low Tide
Thu -- 10:42 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.91.11.21.210.80.60.40.50.70.91.21.41.61.61.51.20.80.3-0-0.2-0.2-0

Tide / Current Tables for Boca Grande Pass, Charlotte Harbor, Florida Current
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Boca Grande Pass
Click for Map
Thu -- 01:34 AM EDT     2.79 knots Max Flood
Thu -- 05:14 AM EDT     -0.00 knots Slack
Thu -- 07:21 AM EDT     Sunrise
Thu -- 07:40 AM EDT     -1.19 knots Max Ebb
Thu -- 09:23 AM EDT     Moonrise
Thu -- 09:58 AM EDT     0.00 knots Slack
Thu -- 01:16 PM EDT     2.62 knots Max Flood
Thu -- 04:12 PM EDT     -0.00 knots Slack
Thu -- 07:45 PM EDT     Sunset
Thu -- 07:48 PM EDT     -2.95 knots Max Ebb
Thu -- 10:42 PM EDT     Moonset
Thu -- 11:25 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.92.72.72.21.20.2-0.6-1.1-1.2-0.801.12.12.62.41.60.3-1.1-2.1-2.8-2.9-2.6-1.8-0.6

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 (6,6,7,8)
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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.