Saturday, January20, 2018 L-36.com


Marine Weather and Tides
Longboat Key, 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 7:19AMSunset 6:03PM Saturday January 20, 2018 9:23 PM EST (02:23 UTC) Moonrise 9:40AMMoonset 9:21PM Illumination 19% Phase: Waxing Crescent; Moon at 4 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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GMZ853 Coastal Waters From Englewood To Tarpon Springs Fl Out 20 Nm- 832 Pm Est Sat Jan 20 2018
Rest of tonight..Northeast winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop.
Sunday..Northeast winds around 10 knots then becoming north late in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop.
Sunday night..North winds around 10 knots then becoming east in the late evening and overnight. Seas 2 feet or less. Bay and inland waters a light chop.
Monday..Southeast winds around 10 knots then becoming south late in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop.
Monday night..South winds around 5 knots. Seas 2 feet or less. Bay and inland waters smooth. Patchy sea fog. A chance of showers.
Tuesday..Southeast winds around 5 knots then becoming north around 10 knots in the afternoon. Seas 2 feet. Bay and inland waters a light chop. Patchy sea fog in the morning. A chance of showers.
Tuesday night..North winds 5 to 10 knots increasing to around 15 knots in the late evening and overnight. Seas 2 to 3 feet. Bay and inland waters a moderate chop.
Wednesday..Northeast winds around 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop.
Wednesday night..Northeast winds around 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop.
Thursday..Northeast winds around 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 832 Pm Est Sat Jan 20 2018
Synopsis..With surface high pressure to our north, winds will generally be out of the northeast between 5-15 knots before taking an onshore component near the coast in the afternoon due to the development of a weak seabreeze. No headlines are expected over the next several days... Winds will veer to the southeast on Monday and Tuesday ahead of an approaching cold front. Due to cold sea surface temperatures, increasing moisture ahead of the front will create the possibility for sea fog, especially Monday night into Tuesday. Later in the work week, easterly winds will increase to possible cautionary/advisory levels as a north oriented pressure gradient tightens.

7 Day Forecast for Marine Location Near Longboat Key, FL
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location: 27.38, -82.63     debug


Area Discussion for - Tampa Bay, FL
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Fxus62 ktbw 210128
afdtbw
area forecast discussion
national weather service tampa bay ruskin fl
828 pm est Sat jan 20 2018

Update
A short wave trough moving east along the northern gulf
coast is supporting a large canopy of mid and high level
clouds over the forecast area this evening. Evening raob
data confirms this with an increase in moisture noted from
700mb and above. 88d returns are showing some patches of
light rain over the gulf, but dry stable air below 700mb
should keep overall rain chances quite low the remainder of
the night, though a few sprinkles or light showers can't be
rules out across the nature coast counties later tonight
as the above mentioned short wave approaches. With light to
calm winds and a slow uptick in dew points some patchy fog
will be possible over inland locations and in the normally
fog prone areas toward morning and will retain a mention of
in the grids and zones. Temperatures will be milder than
previous nights will lows in the upper 40s across the
nature coast, and lower to mid 50s central and south.

Current forecast is on track with no evening update required
at this time.

Aviation
Some brief MVFR ifr vsbys from fog may impact klal and kpgd
terminals between 09-13z, otherwiseVFR will prevail at all
sites during the next 24 hours. Light and variable winds the
remainder of tonight will become east to southeast at 7 to
10 knots after 15z on Sunday.

Marine
With surface high pressure to our north, winds will generally
be out of the northeast between 5-15 knots before taking an
onshore component Sunday afternoon due to the development
of a weak seabreeze. No headlines are expected over the next
several days. Winds will veer to the southeast on Monday and
Tuesday ahead of an approaching cold front. Due to cold sea
surface temperatures, increasing moisture ahead of the front
will create the possibility for sea fog. Later in the work
week, easterly winds will increase to possible cautionary or
advisory levels as the pressure gradient tightens. Ongoing
forecast is in good shape with no changes expected in the
late evening update.

Tbw watches warnings advisories
Fl... None.

Gulf waters... None.

Update aviation... 57 mcmichael
marine upper air... 42 norman
decision support... 13 oglesby


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PMAF1 18 mi54 min 58°F 57°F1023.4 hPa
MTBF1 20 mi54 min NNE 14 G 16 57°F 1023.3 hPa
42013 - C10 - Navy-2 21 mi54 min ENE 5.8 G 12 61°F
42098 22 mi54 min 57°F1 ft
VENF1 - Venice, FL 23 mi84 min NNE 5.1 G 8 63°F 57°F1024.5 hPa (+0.9)54°F
CLBF1 25 mi90 min Calm G 1.9 64°F 1024 hPa
SAPF1 - 8726520 - St. Petersburg, FL 26 mi54 min N 5.1 G 8 60°F 57°F1023.2 hPa
OPTF1 - 8726607 - Old Port Tampa, FL 33 mi54 min N 5.1 G 7 58°F 56°F1024.1 hPa
MCYF1 38 mi54 min 58°F
TSHF1 - 8726667 - East Bay Causeway, FL 39 mi60 min N 5.1 G 6
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 40 mi66 min N 4.1 G 6
CWBF1 - 8726724 - Clearwater Beach, FL 43 mi54 min NNE 8 G 9.9 58°F 54°F1024.2 hPa

Wind History for C-Cut, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sarasota / Bradenton, Sarasota-Bradenton International Airport, FL4 mi31 minVar 410.00 miFair62°F54°F75%1023.6 hPa
Venice Municipal Airport, FL24 mi29 minE 1010.00 mi63°F55°F77%1023.4 hPa

Wind History from SRQ (wind in knots)
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Last 24hrNE5NE3NE6NE5NE4E4NE5N5NE3NE4NE4E5NE5E3E4E6E5E4E6CalmNE4NE4Calm4
1 day agoN6N5NE5NE4NE6NE5NE5NE5NE5NE5NE6NE6E9E5E6E3E6W7W7W6N6N3N3N4
2 days agoN9N11
G20
N9N10N9NE10N9N9NE8N7NE6N9N11NE10NE10N8NW7N8N9N8N8N6N5N4

Tide / Current Tables for Sarasota, Sarasota Bay, Florida
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Sarasota
Click for Map
Sat -- 01:12 AM EST     1.76 feet High Tide
Sat -- 07:20 AM EST     Sunrise
Sat -- 09:17 AM EST     -0.38 feet Low Tide
Sat -- 09:38 AM EST     Moonrise
Sat -- 03:07 PM EST     1.16 feet High Tide
Sat -- 06:02 PM EST     Sunset
Sat -- 08:43 PM EST     0.58 feet Low Tide
Sat -- 09:21 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.81.71.51.20.80.40-0.2-0.4-0.3-00.40.811.21.110.90.70.60.60.71

Tide / Current Tables for Tampa Bay (Sunshine Skyway Bridge), Florida Current
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Tampa Bay (Sunshine Skyway Bridge)
Click for Map
Sat -- 12:46 AM EST     1.16 knots Max Flood
Sat -- 03:34 AM EST     -0.00 knots Slack
Sat -- 07:04 AM EST     -1.53 knots Max Ebb
Sat -- 07:21 AM EST     Sunrise
Sat -- 09:39 AM EST     Moonrise
Sat -- 10:41 AM EST     0.00 knots Slack
Sat -- 02:02 PM EST     1.48 knots Max Flood
Sat -- 05:46 PM EST     -0.00 knots Slack
Sat -- 06:01 PM EST     Sunset
Sat -- 07:57 PM EST     -0.56 knots Max Ebb
Sat -- 09:21 PM EST     Moonset
Sat -- 10:15 PM EST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.11.10.90.4-0.3-0.9-1.4-1.5-1.4-1-0.50.20.81.31.51.30.90.4-0.1-0.4-0.6-0.4-0.10.3

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 (21,6,7,8)
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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.