Friday, May26, 2017 L-36.com


Marine Weather and Tides
Siesta Key, FL

Version 3.4
What's New / NOTES
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 6:35AMSunset 8:19PM Friday May 26, 2017 3:27 AM EDT (07:27 UTC) Moonrise 6:32AMMoonset 8:24PM Illumination 1% Phase: New Moon; Moon at 1 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- 831 Pm Edt Thu May 25 2017
Tonight..Northwest winds around 10 knots. Seas 2 to 4 feet. Bay and inland waters a light chop.
Friday..Northwest winds around 5 knots. Seas 2 to 3 feet. Bay and inland waters smooth.
Friday night..North winds around 5 knots. Seas 2 feet. Bay and inland waters smooth.
Saturday..East winds around 5 knots then becoming west early in the afternoon, then increasing to around 10 knots late in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop.
Saturday night..Northwest winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop.
Sunday..Northwest winds around 5 knots then becoming west around 10 knots in the late morning and afternoon. Seas 2 feet or less. Bay and inland waters a light chop.
Sunday night..West winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop.
Monday..West winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop.
Monday night..West winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop.
Tuesday..Southwest winds around 5 knots then becoming west late in the afternoon. Seas 2 feet or less. Bay and inland waters smooth. A slight chance of Thunderstorms.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 831 Pm Edt Thu May 25 2017
Synopsis..High pressure over the gulf of mexico builds in across florida for the holiday weekend and meanders there into mid-week. This will provide light winds with afternoon sea breezes.

7 Day Forecast for Marine Location Near Siesta Key, FL
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location: 27.3, -82.57     debug


Area Discussion for - Tampa Bay, FL
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Fxus62 ktbw 260528
afdtbw
area forecast discussion
national weather service tampa bay ruskin fl
128 am edt Fri may 26 2017

Aviation
Vrf conditions expected at all TAF sites through the period.

Winds will remain light overnight, then slightly increasing
with a west-northwest flow by Friday afternoon, but still
remaining less than 10 knots. No other aviation impacts
expected.

Prev discussion issued 729 pm edt Thu may 25 2017
update...

water vapor imagery showing dry air aloft over the region as
weak surface high pressure area settles into the E gulf
filtering in much drier dewpoint airmass over the fl
peninsula. Early look at tbw sounding showing very dry air
above 5kt ft inversion with westerly flow through the column.

Expect slightly cooler than seasonal average overnight temps
with clear skies and light winds for pleasant conditions.

Latest grids and forecast on track.

Aviation...

vrf conditions all TAF sites all night and Friday with light
winds while residual sct_bkn clouds over SW fl to thin and
move seward this evening.

Prev discussion... Issued 214 pm edt Thu may 25 2017
short term (rest of today - Friday)...

an upper level ridge reaches from mexico to hudson bay while a low
aloft oh troughs southeastward... Across the mid-atlantic coast then
arcs back to northern fl. Surface high pressure centered over the
northern half of the gulf of mexico ridges north through the
mississippi valley and a front across the south half of the gulf
extends across south-central fl to the bahamas.

With time - the upper ridge slides out over the western gulf and
stretches to ontario while the upper low tracks to the canadian
maritimes and takes the trough with it... Although a weak short wave
trough hangs back across northern fl. The gulf high pressure tracks
to fl with the front moving into far south fl tonight then south of
there fri.

For this afternoon - a few showers remain in the far south but will
clear before evening. Considerable cloudiness continues but
will give way to clear mostly skies after sunset. The
robust and gusty winds of this morning continue to diminish.

The weak short wave trough has very little impact as the deep layer
ridging sliding toward the area from the gulf dominates. A stable
warm and dry air mass prevails. Model pwat values run around 0.5
inches for the northern 2 3s of the area and around 1 inch in the
south. Light flow gives way to onshore flow in an afternoon sea
breeze. Temperatures overnight will be below normal but warm back to
near normal by the afternoon.

Long term (Friday night - Thursday)...

mid level ridging will build in over the gulf on Saturday and then
shift east over the state on Sunday as an attendant surface high
across the central peninsula on Saturday sinks south to the southern
peninsula on Sunday. A dry subsident air mass under the deep layered
ridging will support ample sunshine across the entire forecast area
through the long holiday weekend with temperatures warming into the
lower to mid 90s over interior locations each afternoon, with upper
80s to around 90 along the coast due to the sea breeze, with lows
generally in the upper 60s to lower 70s.

During late Monday through Thursday the upper level ridge will shift
east into the atlantic and will become aligned southwest to
northeast from the south florida peninsula into the western
atlantic, as the surface high sets up from the western atlantic west
across the south-central peninsula. A southeast wind flow albeit
light around the surface high will allow for a slow increase in
moisture across the region through the period which will lead to
increasing chances (pops 20 to 30 percent on Tuesday, then 30-50
percent Wednesday and Thursday) for diurnal sea breeze driven
showers and thunderstorms each day during the afternoon and early
evening hours with the highest rain chances expected over inland
sections each afternoon as the east and west coast sea breeze
boundaries move inland.

Temperatures will range from the upper 80s to around 90 along the
coast, and lower 90s inland each day, with overnight lows mainly in
the lower 70s.

Marine... Robust winds continue to diminish although small
craft should exercise caution for the rest of the afternoon.

High pressure in the gulf moves over fl then meanders there
into the middle of next week with light winds dominated by
afternoon sea breezes.

Fire weather...

high pressure builds in with a dry air mass... Mainly Fri and sat.

The minimum rh drops below 35 percent Fri and Sat afternoons but
with only limited durations and with low erc values red
flag criteria is not expected to be reached. Moisture begins
to return Sun with no low rh concerns anticipated for the
next few days.

Preliminary point temps pops
Tpa 87 70 88 73 0 0 0 0
fmy 91 72 93 73 0 0 0 0
gif 91 67 94 68 0 0 0 0
srq 83 69 88 73 0 0 0 0
bkv 87 59 90 65 0 0 0 0
spg 85 73 87 75 0 0 0 0

Tbw watches warnings advisories
Fl... None.

Gulf waters... None.

Aviation... 74 wynn
decision support... 24 hubbard


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VENF1 - Venice, FL 17 mi28 min NNE 6 G 6 71°F 82°F1014.4 hPa (-0.7)62°F
42013 - C10 - Navy-2 21 mi58 min WNW 3.9 G 5.8 81°F
PMAF1 23 mi40 min 75°F 80°F1014.5 hPa
MTBF1 25 mi40 min WNW 7 G 8.9 74°F 1015.5 hPa60°F
CLBF1 31 mi94 min NE 1 G 1.9 69°F 1014.7 hPa
SAPF1 - 8726520 - St. Petersburg, FL 32 mi46 min W 1 G 1 71°F 81°F1014.9 hPa
OPTF1 - 8726607 - Old Port Tampa, FL 39 mi40 min WSW 6 G 8.9 74°F 80°F1015.3 hPa
MCYF1 43 mi40 min 85°F
TSHF1 - 8726667 - East Bay Causeway, FL 44 mi40 min WNW 1.9 G 2.9
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 44 mi46 min S 1.9 G 1.9
CWBF1 - 8726724 - Clearwater Beach, FL 49 mi40 min WNW 6 G 8 75°F 80°F1015.4 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, FL7 mi35 minN 310.00 miFair65°F61°F87%1014.5 hPa
Venice Municipal Airport, FL17 mi33 minNE 310.00 miFair68°F66°F94%1014.9 hPa

Wind History from SRQ (wind in knots)
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Last 24hrW17W12W12W12NW12NW13NW13NW11NW12W12W10W11W12NW8W7NW8NW4NW3CalmCalmN3CalmN3N3
1 day agoS14S13S18
G25
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G27
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2 days agoSE5S5SE7SE6S11
G16
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S15S15S13
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SW14
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SW15SW14S13SW15
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G21
S12

Tide / Current Tables for Sarasota, Sarasota Bay, Florida
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Sarasota
Click for Map
Fri -- 02:37 AM EDT     1.42 feet High Tide
Fri -- 06:36 AM EDT     Sunrise
Fri -- 07:05 AM EDT     1.08 feet Low Tide
Fri -- 07:32 AM EDT     Moonrise
Fri -- 12:40 PM EDT     2.53 feet High Tide
Fri -- 08:17 PM EDT     Sunset
Fri -- 09:12 PM EDT     -0.49 feet Low Tide
Fri -- 09:23 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.81.21.41.41.31.21.11.11.21.41.82.22.52.52.421.610.5-0-0.3-0.5-0.4-0.1

Tide / Current Tables for Tampa Bay (Sunshine Skyway Bridge), Florida Current
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Tampa Bay (Sunshine Skyway Bridge)
Click for Map
Fri -- 01:15 AM EDT     1.80 knots Max Flood
Fri -- 05:21 AM EDT     -0.00 knots Slack
Fri -- 06:36 AM EDT     Sunrise
Fri -- 06:47 AM EDT     -0.27 knots Max Ebb
Fri -- 07:32 AM EDT     Moonrise
Fri -- 08:13 AM EDT     0.00 knots Slack
Fri -- 12:02 PM EDT     1.55 knots Max Flood
Fri -- 02:53 PM EDT     -0.00 knots Slack
Fri -- 06:48 PM EDT     -2.15 knots Max Ebb
Fri -- 08:18 PM EDT     Sunset
Fri -- 09:24 PM EDT     Moonset
Fri -- 10:54 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.51.81.71.30.70.1-0.2-0.3-0.10.30.91.31.51.30.8-0.1-1-1.7-2.1-2.1-1.9-1.5-0.80.1

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 (3,6,7,8)
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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.