Marine Weather and Tides
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.
|Sunrise 6:55AM||Sunset 8:00PM||Monday April 23, 2018 5:41 AM EDT (09:41 UTC)||Moonrise 12:56PM||Moonset 1:44AM||Illumination 56%|
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|GMZ853 Coastal Waters From Englewood To Tarpon Springs Fl Out 20 Nm- 358 Am Edt Mon Apr 23 2018 |
Today..South winds around 15 knots diminishing to 5 to 10 knots in the afternoon. Seas 2 feet. Bay and inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Tonight..West winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Tuesday..West winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. A chance of showers in the morning. A slight chance of Thunderstorms.
Tuesday night..West winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. A slight chance of Thunderstorms in the evening.
Wednesday..West winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop.
Wednesday night..Northwest winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop.
Thursday..West winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop.
Thursday night..West winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop.
Friday..Southwest winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop.
|GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 358 Am Edt Mon Apr 23 2018 |
Synopsis.. A cold front will approach the waters today, eventually cross the waters tonight into Tuesday. This will generate scattered showers and Thunderstorms, and result in winds shifting from south/southeast to southwest and eventually west. Winds will remain 15 knots or less with seas 3 feet or less, though locally strong winds and rougher seas may occur near Thunderstorms. A drier weather pattern will return for the second half of the week with light winds and seas.
7 Day Forecast for Marine Location Near Nokomis, FLHourly EDIT Help
Area Discussion for - Tampa Bay, FL  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus62 ktbw 230751|
area forecast discussion
national weather service tampa bay ruskin fl
351 am edt Mon apr 23 2018
Short term (today and Tuesday)
A broad upper cutoff low remains fixed over the mid
mississippi valley region this morning. At the surface, a
broad trough of low pressure extends from western tennessee
into the florida panhandle and eastern gulf of mexico. These
features will dominate weather over the next couple of
days, generating unsettled weather and widespread
Showers and thunderstorms are ongoing this morning over the
gulf waters. Short range guidance suggests this activity
will gradually move toward the florida big bend northern
florida through the morning hours, with a weakening trend as
it does so. This will bring showers and storms into parts
of the nature coast through the morning. By late morning and
early afternoon, a weak seabreeze is expected to develop
and quickly advect inland as flow becomes more westerly with
time. This may allow for a few showers or storms inland
from the immediate coast initially. Seabreeze convergence
will be maximized over the interior peninsula, where the
greatest storm coverage is expected. Impressive wind shear
will exist across the region given the presence of the
strong upper trough to our north, but instability will be
fairly meager given widespread cloud cover. Still,
conditions to seem to favor at least the potential for
spotty strong to borderlined severe storms mainly across
interior and eastern florida mid to late this afternoon.
Despite the clouds, high temperatures will generally remain
in the middle and upper 80s.
Mild and muggy conditions will persist overnight tonight as
south southwest flow continues ahead of an approaching
front. The front will gradually work its way southward
overnight into the day on Tuesday. With weak upper lift
associated with the lingering upper low, and abundant
moisture, spotty showers and perhaps a thunderstorm will
remain possible tonight into Tuesday morning, with
increasing shower storm activity along and ahead of the
front toward morning.
Scattered to numerous showers and storms will occur along
and ahead of the front as it continues to move south. With
strong westerly flow atop moist southwest westerly surface
flow in the vicinity of the linger cold front, locally heavy
rainfall and flooding will be a distinct possibility. The
heavier rainfall is likely to occur across portions of south
central and southwest florida during the afternoon. Showers
and storms should quickly exist the area toward evening as
drier air gradually moves into the region.
Mid long term (Wednesday through this weekend)
Rather quiet weather expected in the mid long term forecast
period. Late Tuesday into Wednesday, upper level troughing
across the eastern CONUS will allow for a frontal boundary
to push through the area. Behind the front, drier air aloft
will move in place limiting rain chances for much of the
week. A few shortwaves will move through the base of an
upper-level trough in place across the eastern CONUS on
Thursday and again on Saturday. Although lift will be
enhanced somewhat, moisture looks to remain fairly limited
so pops will be capped at 30 percent for now. Mostly sunny
skies are expected from Wednesday into the weekend with
highs in the lower to mid 80s through the period with lows
in the upper 50s to upper 60s.
Aviation (06z tafs)
BrokenVFR ceilings expected through the period. Spotty
shra tsra will be possible at most terminals after 15z, with
higher probabilities for klal ktpa kspg. Winds will shift
from east southeast to west southwest. Gusty winds and ifr
visibilities possible in any shra tsra.
An area of low pressure to the west will continue to
generate south southeast winds today. Winds will become more
southwest to west this afternoon ahead of an approaching
front. Scattered showers and thunderstorms may generate
locally gusty winds and rough seas. Otherwise, winds look to
remain 15 knots or less. A weak front will bring drier
conditions by Wednesday with light winds persisting.
Abundant low level moisture and scattered showers and
storms will maintain a low threat of fires. A front will
bring drier air into the region Wednesday through the end of
the week, which may result in humidities nearing 25 percent
in the afternoon. However, winds look to remain light
through the week, and no fire weather concerns are expected.
Preliminary point temps pops
Tpa 83 70 80 67 40 40 40 10
fmy 87 71 85 67 30 30 30 30
gif 85 69 84 63 60 40 40 30
srq 82 70 81 67 30 40 40 20
bkv 83 65 80 61 40 30 20 10
spg 82 71 80 67 30 40 40 10
Tbw watches warnings advisories
Gulf waters... None.
Short term aviation marine fire weather... 84 austin
mid term long term decision support... 11 mckaughan
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|
|PMAF1||37 mi||42 min||70°F||75°F||1015 hPa (-1.0)|
|MTBF1||39 mi||42 min||SSE 11 G 12||71°F||1015 hPa (-1.1)||68°F|
|42098||41 mi||42 min||74°F||2 ft|
|FMRF1 - 8725520 - Fort Myers, FL||45 mi||42 min||ESE 4.1 G 5.1||71°F||83°F||1015.1 hPa (-0.8)|
|CLBF1||45 mi||108 min||SE 4.1 G 7||75°F||1014.8 hPa|
|SAPF1 - 8726520 - St. Petersburg, FL||46 mi||48 min||SSE 5.1 G 9.9||72°F||77°F||1014.6 hPa|
Wind History for C-Cut, FL(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Venice Municipal Airport, FL||3 mi||47 min||E 5||10.00 mi||A Few Clouds||72°F||69°F||94%||1015.9 hPa|
|Sarasota / Bradenton, Sarasota-Bradenton International Airport, FL||21 mi||49 min||ESE 7||10.00 mi||Fair||70°F||68°F||93%||1014.9 hPa|
Wind History from VNC (wind in knots)
|1 day ago||E||E||E||SE||SE|
|2 days ago||E||Calm||NE||NE||W||W||W||W||W||W||W||NW||NW|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Venice Inlet (inside) |
Click for Map
Mon -- 02:17 AM EDT -0.21 feet Low Tide
Mon -- 02:43 AM EDT Moonset
Mon -- 06:58 AM EDT Sunrise
Mon -- 11:47 AM EDT 1.35 feet High Tide
Mon -- 01:37 PM EDT 1.33 feet Low Tide
Mon -- 01:56 PM EDT Moonrise
Mon -- 06:46 PM EDT 1.76 feet High Tide
Mon -- 07:58 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
Click for Map
Mon -- 02:42 AM EDT Moonset
Mon -- 03:34 AM EDT -0.15 feet Low Tide
Mon -- 06:57 AM EDT Sunrise
Mon -- 12:05 PM EDT 0.99 feet High Tide
Mon -- 01:56 PM EDT Moonrise
Mon -- 02:23 PM EDT 1.20 feet Low Tide
Mon -- 07:57 PM EDT Sunset
Mon -- 08:24 PM EDT 1.34 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  HelpWeather Map
GOES Local Image of Southeast EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Tampa Bay, FL (5,6,7,8)(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.