Marine Weather and Tides
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.
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|Sunrise 7:21AM||Sunset 7:47PM||Wednesday March 29, 2017 7:07 AM EDT (11:07 UTC)||Moonrise 7:38AM||Moonset 8:38PM||Illumination 4%|
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|GMZ856 Coastal Waters From Bonita Beach To Englewood Fl Out 20 Nm- 345 Am Edt Wed Mar 29 2017 |
Today..East winds 5 to 10 knots then becoming southwest around 10 knots in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop.
Tonight..Northwest winds 5 to 10 knots then becoming east after midnight. Seas 2 feet or less. Bay and inland waters smooth.
Thursday..South winds around 10 knots becoming west in the afternoon. Seas 2 feet. Bay and inland waters a light chop.
Thursday night..Southeast winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop.
Friday..South winds around 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Friday night..Southwest winds around 10 knots. Seas 2 to 3 feet. Bay and inland waters a light chop. A slight chance of showers.
Saturday..West winds around 5 knots. Seas 2 feet or less. Bay and inland waters smooth.
Saturday night..Northwest winds around 5 knots then becoming north after midnight. Seas 2 feet or less. Bay and inland waters smooth.
Sunday..East winds around 5 knots then becoming south in the afternoon. Seas 2 feet or less. Bay and inland waters smooth.
|GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 345 Am Edt Wed Mar 29 2017 |
Synopsis.. Benign marine forecast through Thursday as high pressure dominates the region. Light east to southeast flow this morning will turn west and southwest near the coast this afternoon with sea-breeze development...and then expand offshore with time through the afternoon/early evening hours. A more southerly flow develops by Thursday, with flow again turning onshore near the coast in the afternoon. Winds increase to near cautionary levels Thursday night and Friday in advance of a cold front. This front will likely bring some shower and/or Thunderstorms activity to the region on Friday. Lighter winds and drier conditions return for the weekend as high pressure again takes control of the eastern gulf of mexico.
7 Day Forecast for Marine Location Near Englewood, FLHourly EDIT Help
Area Discussion for - Tampa Bay, FL  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus62 ktbw 290831|
area forecast discussion
national weather service tampa bay ruskin fl
431 am edt Wed mar 29 2017
08z water vapor and h4 rap analysis shows an amplified mid/upper
level pattern over the CONUS this morning. Broad synoptic ridging
over the pacific coast digs downstream into a sharp and potent
trough/closed low feature ejecting out of the southwest states
across the central and southern plains. Lots of severe weather
ongoing with this feature in oklahoma and texas early this morning,
however... Further downstream the flow again ridges northward over
the eastern gulf of mexico/florida and southeast atlantic seaboard.
This ridge is protecting our area, and will help keep our forecast
generally benign, warm, and dry through Thursday.
High pressure will remain in control of our region at the surface
for one more day as well. This ridge is centered off the fl east
coast, but ridges back to the west across the state.
Skies are generally clear this morning, although a few patches of
shallow ground fog can be seen in the difference fields, and
confirmed by some observations. At this point... Most of these fog
patches are along and north of the i-4 corridor, but will not be
surprised to see a few areas develop toward down further south.
Either way, the fog will not last long once the Sun comes
Short term (today through Thursday)
Today... Warm and dry weather continue with stacked ridging over the
florida peninsula. Strong terrestrial heating will boost
temperatures by mid/late afternoon into the middle and upper 80s
away from the coast, and force another well-defined sea breeze to
form and evolve slowly inland. This sea-breeze will keep things a
bit cooler at the beaches during the second half of the afternoon.
Plenty of atmospheric suppression under the upper ridge should again
prevent any deep convection along the inland moving sea-breeze... As
the CU fields stays suppressed and shallow.
Upper ridge will hold control over the region into Thursday, but
begin to loose influence late in the day, and especially during the
evening hours. The surface ridge looks to weaken and push eastward,
giving up its influence on the region as well. The movement of the
surface ridge will allow winds to shift to a more southerly
direction, especially over the eastern gulf. Strong terrestrial
heating should turn the flow more southwest at the coast, and with
some synoptic push behind it, the sea-breeze will move inland faster
on Thursday than during previous days. Overall suppression will not
be as great on Thursday, but the quick progression inland of the sea-
breeze will not be all that favorable for any shower (especially
given the time of year). If any shower are to form, it is more
likely to be along the i-95 corridor... Up toward jacksonville.
Therefore, keeping pops at 10% or less for one more day. Synoptic
trough beginning to approach from the west during Thursday will
certainly keep all inclement weather well to our west, however, it
is likely that we will see some increase in high level cirrus ahead
of this system invading our skies to filter the Sun at times. The
cirrus may be enough to keep temps a couple of degrees cooler than
today, but we are still looking at widespread 80s.
On Friday, a mid/upper level trough will dig into the SE u.S.
Allowing a surface trough to move through our area bring some rain
chances to the area. Mid/upper level support will be moving area
from our area so will likely end up with a broken line of showers
and isolated thunderstorms moving through. By Saturday morning,
upper ridging quickly builds back over the region for the rest of
the weekend and into Monday keeping us dry with above normal temps
As we get into the early part of next week, greater forecast
uncertainty exists. Global models have been persistent on the
development of a significant shortwave trough / cut-off low feature
across the western u.S. Later this weekend and take the feature
eastward into the southern u.S. At the start of next week. While
both global models show this feature, there are major discrepancies
between them on timing, location and strength of this feature. All
of which will have impacts on our forecast. For now, have low end
rain chances on Monday and Tuesday until models have a better handle
on things. Forecast certainty this far out is low to say the least.
Aviation (29/08z through 30/06z) VFR conditions prevail
for the TAF period at most locations. A brief period of
MVFR visibility is possible toward dawn at mainly klal/kpgd,
but not significant restrictions are expected and any
lowered vis will end quickly after sunrise. Light and
variable morning flow turns sw/w during the afternoon hours
and increases to around 10 knots as the sea-breeze evolves
slowly inland from the coast toward the i-75 corridor. Winds
decrease with sunset this evening and become variable again
before the end of the TAF period.
Benign marine forecast through Thursday as high pressure dominates
the region. Light east to southeast flow this morning will turn west
and southwest near the coast this afternoon with sea-breeze
development... And then expand offshore with time through the
afternoon/early evening hours. A more southerly flow develops by
Thursday, with flow again turning onshore near the coast in the
afternoon. Winds increase to near cautionary levels Thursday night
and Friday in advance of a cold front. This front will likely bring
some shower and/or thunderstorms activity to the region on Friday.
Lighter winds and drier conditions return for the weekend as high
pressure again takes control of the eastern gulf of mexico.
High pressure keeps the weather dry and warm through Thursday.
The next potential for any rainfall will not arrive until Friday.
Relative humidity is expected to approach or drop just under 35%
away from the coast each of the next two afternoons. Today appears
to have the best potential for widespread critical level relative
humidity. However, extended durations of critical rh, are generally
not expected, and only light forecast winds should keep red flag
conditions from being met. Based on relative humidity and erc
values, the locations that will likely come closest to red flag
conditions this afternoon are inland levy and inland lee counties.
Increasing low level moisture prevents critical levels of relative
Fog potential... Isolated patches of shallow ground fog can be
expected away from the coast early this morning, and again early
Thursday morning. However, widespread and/or dense fog is not
Preliminary point temps/pops
Tpa 86 67 83 68 / 0 0 0 0
fmy 87 65 85 66 / 0 0 0 0
gif 88 65 87 65 / 0 0 0 10
srq 78 67 78 66 / 0 0 0 0
bkv 87 61 86 61 / 0 0 0 0
spg 84 68 81 68 / 0 0 0 0
Gulf waters... None.
Synopsis/short term/aviation/marine/fire wx... Mroczka
mid term/long term/decision support... 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|
|VENF1 - Venice, FL||8 mi||67 min||ENE 6 G 7||65°F||72°F||1015.1 hPa (-0.4)||60°F|
|42013 - C10 - Navy-2||32 mi||97 min||E 5.8 G 5.8||65°F||70°F|
|FMRF1 - 8725520 - Fort Myers, FL||35 mi||49 min||SE 4.1 G 5.1||65°F||80°F||1015.1 hPa|
|PMAF1||47 mi||49 min||64°F||73°F||1015 hPa|
|MTBF1||49 mi||49 min||E 5.1 G 6||69°F||1016 hPa||62°F|
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||8 mi||12 min||ENE 3||10.00 mi||Fair||63°F||60°F||94%||1015.9 hPa|
|Punta Gorda, Charlotte County Airport, FL||21 mi||14 min||N 0||7.00 mi||Fair||60°F||59°F||96%||1016.2 hPa|
Wind History from PGD (wind in knots)
|1 day ago||NE||NE||NE||NE||E||E||E||N||NE||NE|
|2 days ago||NE||NE||E||E||SE||SE|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
Click for Map
Wed -- 03:28 AM EDT 1.23 feet High Tide
Wed -- 07:23 AM EDT Sunrise
Wed -- 08:38 AM EDT Moonrise
Wed -- 09:17 AM EDT 0.34 feet Low Tide
Wed -- 03:11 PM EDT 1.38 feet High Tide
Wed -- 07:45 PM EDT Sunset
Wed -- 09:37 PM EDT Moonset
Wed -- 09:59 PM EDT -0.13 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
Wed -- 12:43 AM EDT 2.88 knots Max Flood
Wed -- 04:08 AM EDT -0.00 knots Slack
Wed -- 06:56 AM EDT -1.67 knots Max Ebb
Wed -- 07:22 AM EDT Sunrise
Wed -- 08:37 AM EDT Moonrise
Wed -- 09:32 AM EDT 0.00 knots Slack
Wed -- 12:41 PM EDT 2.75 knots Max Flood
Wed -- 03:40 PM EDT -0.00 knots Slack
Wed -- 07:07 PM EDT -2.76 knots Max Ebb
Wed -- 07:44 PM EDT Sunset
Wed -- 09:37 PM EDT Moonset
Wed -- 10:29 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 (7,2,3,4)(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.