Marine Weather and Tides
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 6:46AM||Sunset 8:22PM||Saturday July 22, 2017 6:53 AM EDT (10:53 UTC)||Moonrise 4:54AM||Moonset 6:47PM||Illumination 2%|
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|GMZ856 Coastal Waters From Bonita Beach To Englewood Fl Out 20 Nm- 338 Am Edt Sat Jul 22 2017 |
Today..Southeast winds 5 to 10 knots then becoming south in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop. Scattered Thunderstorms.
Tonight..Southwest winds around 5 knots then becoming south after midnight. Seas 2 feet or less. Bay and inland waters smooth. Isolated Thunderstorms.
Sunday..Southeast winds around 5 knots then becoming south 5 to 10 knots in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop. Scattered Thunderstorms.
Sunday night..Southwest winds around 5 knots then becoming south after midnight. Seas 2 feet or less. Bay and inland waters smooth. Isolated Thunderstorms.
Monday..Southeast winds around 5 knots then becoming southwest in the afternoon. Seas 2 feet or less. Bay and inland waters smooth. Isolated Thunderstorms.
Monday night..West winds around 5 knots then becoming east after midnight. Seas 2 feet or less. Bay and inland waters smooth. Isolated Thunderstorms.
Tuesday..East winds around 5 knots. Seas 2 feet or less. Bay and inland waters smooth. Scattered Thunderstorms.
Tuesday night..North winds around 5 knots then becoming northeast around 5 knots after midnight. Seas 2 feet or less. Bay and inland waters smooth. Scattered Thunderstorms.
Wednesday..East winds around 5 knots then becoming south around 5 knots in the afternoon. Seas 2 feet or less. Bay and inland waters smooth. Scattered Thunderstorms.
|GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 338 Am Edt Sat Jul 22 2017 |
Synopsis.. Surface ridge axis remain in a position over the southern half of the florida peninsula into the eastern gulf of mexico through the next several days, providing the region with a generally light southwest to south wind. Winds and seas will generally be quite low, however mariners should expect scattered Thunderstorms, especially during the overnight and morning hours.
7 Day Forecast for Marine Location Near Solana, FLHourly EDIT Help
Area Discussion for - Tampa Bay, FL  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus62 ktbw 220713|
area forecast discussion
national weather service tampa bay ruskin fl
313 am edt Sat jul 22 2017
07z water vapor and h4 rap analysis show the florida peninsula under
a region of weak flow aloft. In the mid-levels our region resides
between an area of upper ridging over the atlantic... And a weak
upper low retrograding westward across north-central gulf
of mexico. While the low to our west has vertical extent
into the upper troposphere, the upper ridge to our east does
not. Above the h5 level, this ridge quickly breaks down and
transitions to a tutt cell migrating westward over the
bahamas. All-in-all the upper levels are rather complex over
our vicinity of the world, yet no feature is really going
to have a significant impact on our weather today.
The main belt of northern stream westerlies are displaced well to
our north (where they should be this time of year), and any synoptic
features of lift associated with it, will also stay well away from
At the surface, the subtropical ridge axis remains aligned over the
south-central florida peninsula, providing our region with a light
1000-700mb SW flow pattern, that will persist for the extent of the
weekend. This deeper low level SW flow pattern is climatologically
favorable for late night early morning convective activity forming
along the land-breeze over the coastal waters... And then
tending to migrate onshore. We have seen this the past
couple of mornings, and today will be no different. Activity
will not be widespread, but those out early this morning
near the coast can expect to dodge a brief shower or two,
perhaps a few rumbles of thunder. This flow pattern, because
winds are weak but also tend to push convective cells to
the coast, is also favorable for the development of isolated
brief and generally weak waterspouts near the coast within
a few hours either side of sunrise, as cells migrate
nearshore and encounter old residual boundaries to enhance
updraft vorticity stretching. Keep in mind, it does not take
strong convection to produce these morning waterspout
events. Even a weak updraft encountering a favorable
thermodynamic and vorticity profile can spin up a brief visible
Short term (today through Sunday)
Today... Light southwest flow dictates the main weather features
through the day. Southwest flow is highly favorable for the
development of shallow coastal showers storms during the pre-dawn
hours, which then migrate onshore during the morning hours.
Generally speaking these showers do not survive far inland within a
few hours of sunrise, as they migrate away from their source of
focus and instability. Therefore, highest rainfall chances through
15z will remain near the coast. Thereafter, diurnal
insolation and resulting instability further inland supports
increasing convective potential along outflow sea-breeze
boundaries migrating inland with the synoptic flow. Will
increase rain chances over inland areas during the afternoon
to coincide with climatology under light SW flow. Generally
speaking, by late in the afternoon, rain chances should have
significantly fallen off close to the coast... And this will
be in the forecast. However, the light flow can
occasionally fail to prevent outflow from inland storms to
migrate back westward, providing focus for another round of
storms back toward the coast in the evening. This scenario
is very difficult to accurately predict far in advance... And
is not part of the current forecast. Scattered storms will
become more isolated with time after sunset and generally
end over the land zones by midnight. Temperatures will end
up within a couple degrees of 90 for most locations, close
to where high temps should be in late july.
Sunday... After midnight the continued southwest flow will favor
re-development of scattered shallow convective activity
over the coastal waters. There are some indications that the
low level pressure gradient during the pre-dawn hours will
favor slightly better low level convergence focus off the
nature coast compared to previous mornings, and a resulting|
higher coverage of showers developing and migrating toward
shore from pinellas county northward through the morning
hours. Will have highest rain chances Sunday morning over
the northern coastal waters and adjacent land zones, and
then similar to today, decrease activity near the coast
during the second half of the afternoon, while increase rain
chances inland from the i-75 corridor.
Long term (Sunday night - Friday)
Very little change in the overall pattern is forecast for the first
half of next week, with the sub-tropical surface ridge continuing to
extend from the atlantic into the southern half of the florida
peninsula. This will keep weak winds in place, although the low
level flow will generally be a bit more westerly southwesterly north
of interstate 4 along the northern side of the ridge. With abundant
moisture available, the pattern will continue to feature scattered
early morning thunderstorms developing over the gulf and shifting
east into the florida peninsula through the morning and early
afternoon. Storm coverage will become more numerous each afternoon
under strong surface heating, before storms dissipate and shift into
the interior through the early evening hours.
During the second half of next week, a mid level trough will build
into the eastern seaboard, shifting the surface ridge to the
southeast. This will bring a slight increase in the westerly low
level flow, but the increase will not be enough to drastically alter
the pattern of morning convection over the gulf shifting east into
the interior throughout the day. Scattered to numerous storms will
still be expected each afternoon, with the highest coverage
generally expected over the interior. Temperatures will remain
seasonable, with highs around 90, and morning lows in the mid to
Aviation (22 07z through 23 06z)
GeneralVFR conditions can be expected through the morning
hours. However, southwest flow will promote a scattering of
showers storms migrating onshore from the gulf. Any terminal
may see a brief cig vis restriction with the passage of one
of these showers. The majority of the showers storms should
migrate inland from the terminals during the later
afternoon evening hours, with the exception of klal. Winds
outside of any storms generally remain less than 10 knots
through the TAF period.
Surface ridge axis remain in a position over the southern half of
the florida peninsula into the eastern gulf of mexico through the
next several days, providing the region with a generally light
southwest to south wind. Winds and seas will generally be quite low,
however mariners should expect scattered thunderstorms, especially
during the overnight and morning hours.
No significant fire weather concerns expected as a moist summer
pattern remain in place through the next several days. Winds will
generally be light from the south or southwest, with relative
humidity well above critical values. Scattered storms can be
expected near the coast each morning... With activity spreading
inland with time through the day.
Fog potential... No significant or widespread fog or visibility
restrictions are expected through the next several days.
Preliminary point temps pops
Tpa 89 78 88 79 50 30 50 20
fmy 90 76 90 77 40 20 40 20
gif 91 75 90 75 50 30 50 20
srq 87 78 87 77 50 30 50 20
bkv 89 74 88 74 50 30 50 20
spg 89 78 88 79 50 30 50 20
Tbw watches warnings advisories
Gulf waters... None.
Synopsis short term aviation marine fire wx... Mroczka
long term decision support... Fleming
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|FMRF1 - 8725520 - Fort Myers, FL||22 mi||54 min||SE 4.1 G 6||78°F||89°F||1017 hPa (-0.0)|
|VENF1 - Venice, FL||23 mi||54 min||E 5.1 G 8||79°F||88°F||1016.9 hPa (-0.0)||78°F|
|42013 - C10 - Navy-2||49 mi||84 min||SSW 7.8 G 12||87°F|
Wind History for Naples, FL(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Punta Gorda, Charlotte County Airport, FL||4 mi||61 min||SE 4||10.00 mi||Fair||76°F||75°F||97%||1017.7 hPa|
|Venice Municipal Airport, FL||22 mi||59 min||ESE 5||10.00 mi||Mostly Cloudy||79°F||78°F||100%||1016.9 hPa|
Wind History from PGD (wind in knots)
|1 day ago||E||S||Calm||SW||W||SW||W||N||Calm||SW||Calm||E||SE||Calm||Calm||Calm||Calm||Calm||S||Calm||NE|
|2 days ago||S||S||W||W||SW||SW||S||SW||SW||SW||SW||W||NW||N||NE||Calm||NE||Calm||E||S||Calm||NE||Calm||Calm|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Punta Gorda |
Click for Map
Sat -- 05:03 AM EDT 1.28 feet High Tide
Sat -- 05:54 AM EDT Moonrise
Sat -- 06:47 AM EDT Sunrise
Sat -- 08:09 AM EDT 1.18 feet Low Tide
Sat -- 02:20 PM EDT 2.41 feet High Tide
Sat -- 07:47 PM EDT Moonset
Sat -- 08:21 PM EDT Sunset
Sat -- 10:26 PM EDT -0.30 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Boca Grande Pass |
Click for Map
Sat -- 04:41 AM EDT -0.00 knots Slack
Sat -- 05:19 AM EDT -0.08 knots Max Ebb
Sat -- 05:55 AM EDT Moonrise
Sat -- 05:56 AM EDT 0.00 knots Slack
Sat -- 06:48 AM EDT Sunrise
Sat -- 10:23 AM EDT 2.58 knots Max Flood
Sat -- 01:23 PM EDT -0.00 knots Slack
Sat -- 05:29 PM EDT -3.77 knots Max Ebb
Sat -- 07:47 PM EDT Moonset
Sat -- 08:21 PM EDT Sunset
Sat -- 09:20 PM EDT 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Southeast EDIT
Wind Forecast for Tampa Bay, FL (6,6,7,8)(on/off)  Help
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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.