Sunday, August20, 2017 L-36.com


Marine Weather and Tides
Greenbriar, 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 7:03AMSunset 8:05PM Sunday August 20, 2017 7:41 AM EDT (11:41 UTC) Moonrise 4:46AMMoonset 6:25PM Illumination 3% Phase: Waning Crescent; Moon at 28 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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GMZ830 Tampa Bay Waters- 406 Am Edt Sun Aug 20 2017
Today..East winds 5 to 10 knots. Bay and inland waters a light chop. Scattered Thunderstorms in the afternoon.
Tonight..East winds around 10 knots. Bay and inland waters a light chop. Numerous showers and scattered Thunderstorms in the evening.
Monday..Southeast winds around 10 knots. Bay and inland waters a light chop.
Monday night..East winds around 10 knots. Bay and inland waters a light chop. Isolated Thunderstorms in the evening.
Tuesday..Northeast winds around 10 knots. Bay and inland waters a light chop. Isolated Thunderstorms in the afternoon.
Tuesday night..East winds around 5 knots. Bay and inland waters smooth. Isolated Thunderstorms.
Wednesday..Northeast winds around 5 knots. Bay and inland waters smooth. Scattered Thunderstorms.
Wednesday night..Northeast winds around 5 knots then becoming southeast after midnight. Bay and inland waters smooth. Scattered Thunderstorms.
Thursday..Southeast winds around 5 knots then becoming south in the afternoon. Bay and inland waters smooth. Numerous Thunderstorms.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 406 Am Edt Sun Aug 20 2017
Synopsis..Weak high pressure will remain in place this morning as a weak tropical wave move over the florida peninsula and into the eastern gulf this afternoon with scattered to numerous Thunderstorms possible. High pressure then strengthens and remains north of the waters through midweek.

7 Day Forecast for Marine Location Near Greenbriar, FL
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location: 28.02, -82.77     debug


Area Discussion for - Tampa Bay, FL
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Fxus62 ktbw 200801
afdtbw
area forecast discussion
national weather service tampa bay ruskin fl
401 am edt Sun aug 20 2017

Short term (today - Monday)
Upper low spinning in SE gulf this morning to move further
into the central gulf through Sunday. Deep tropical moisture
advecting over the area pulled into the gulf low today then
dry pocket in mid-upper levels to move over the area Monday.

Weak tropical wave at the surface along the SE fl coast this
morning to move over the fl peninsula today during max
heating to collide with gulf seabreeze for numerous
thunderstorms in SW fl building into the suncoast late this
afternoon with mainly scattered convection from the bay
area into the nature coast with around normal warm and humid
conditions. Monday, expect hot temps with muggy humidly and
mainly isolated late afternoon storms as temps soar into
the mid+ 90s and heat index 105-108.

Mid term long term (Monday night-Saturday)
Some mid upper level ridging will be across the region into midweek
then global models bring a wave westward into florida which gets
picked up by a trough moving across the eastern u.S. Late in the
week. This pattern will bring an area of drier air across the region
Monday night and early Tuesday followed by an increase in deep
moisture for the rest of the week. Therefore, other than some low
rain chances, less than 30 percent, north of about the interstate 4
corridor Tuesday, the rain chances look to be pretty high through
much of the period with 40 percent north to 70 percent south
Wednesday, then 60 to 70 percent everywhere for Thursday through
Saturday. Convection will occur mainly during the afternoon and
evening hours, but as we head toward the end of the week a more
south to southwest flow will setup so morning convection will become
possible near the coast.

Daytime high temperatures will remain near normal to slightly above
normal through Wednesday, then near to slightly below normal for the
rest of the week thanks to more clouds and higher rain chances.

Overnight lows will remain near to slightly above normal through the
period.

Aviation
Increased moisture today will bring better chances of
afternoon thunderstorms will keep vcts in all sites from
16z-18z through 00z-02z expect brief MVFR LCL ifr conditions
in stronger storms.

Marine
Weak high pressure in place and a weak tropical wave will
move over the E gulf today with scattered to numerous
afternoon thunderstorms possible. High pressure then remains
north of the waters through midweek as a couple of troughs
move across fl and out over the gulf. The ridge begins to
settles south toward the end of the week. Winds to remain
mainly light and slight seas except in or near
thunderstorms.

Fire weather
Warm and humid summertime conditions continue with daily rain
chances through early next week.

Preliminary point temps pops
Tpa 92 79 94 78 60 30 20 10
fmy 90 76 94 76 60 30 20 10
gif 92 76 94 75 50 20 20 10
srq 91 78 94 77 60 30 20 10
bkv 93 76 94 74 40 20 30 10
spg 92 80 93 78 60 30 20 20

Tbw watches warnings advisories
Fl... None.

Gulf waters... None.

Short term aviation marine fire weather... 25 davis
mid term long term decision support... 69 close


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CWBF1 - 8726724 - Clearwater Beach, FL 4 mi41 min ESE 5.1 G 8.9 83°F 89°F1015.9 hPa (+1.0)
FHPF1 - Fred Howard Park, FL 9 mi107 min ESE 7 G 8 80°F 1016 hPa
OPTF1 - 8726607 - Old Port Tampa, FL 16 mi41 min E 1.9 G 2.9 80°F 89°F1016.1 hPa (+1.4)
SAPF1 - 8726520 - St. Petersburg, FL 19 mi41 min SE 2.9 G 5.1 83°F 89°F1016.1 hPa (+1.4)
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 19 mi53 min NNE 1 G 1.9
TSHF1 - 8726667 - East Bay Causeway, FL 19 mi47 min NE 1.9 G 2.9
MCYF1 20 mi41 min 90°F
CLBF1 20 mi107 min E 1.9 G 2.9 81°F 1014.5 hPa
MTBF1 27 mi41 min SE 8.9 G 9.9 81°F 1015.9 hPa (+1.4)
PMAF1 29 mi41 min 77°F 88°F1015.2 hPa (+1.3)
ARPF1 - APK - Aripeka, FL 29 mi107 min ESE 2.9 G 5.1 78°F 1015.7 hPa
42098 31 mi41 min 89°F1 ft

Wind History for Clearwater Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St. Petersburg/Clearwater Airport, FL9 mi48 minESE 310.00 miFair80°F75°F87%1015.8 hPa
Tampa, Tampa International Airport, FL13 mi48 minN 010.00 miA Few Clouds81°F75°F82%1016.1 hPa
Macdill Air Force Base, Fl., FL17 mi1.7 hrsE 510.00 miFair79°F78°F100%1015.5 hPa
Tampa, Peter O Knight Airport, FL18 mi66 minE 410.00 miPartly Cloudy81°F80°F100%1015.9 hPa
Albert Whitted Airport, FL19 mi48 minSE 610.00 miFair84°F75°F77%1015.2 hPa
Tampa, Vandenberg Airport, FL22 mi46 minN 07.00 miFair77°F73°F89%1016.3 hPa

Wind History from PIE (wind in knots)
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Last 24hrCalmCalmCalmE5E5NE44CalmNE4SW4NW6NW10NW7NW5N6N3N4NE6E3E6CalmE4E3E3
1 day agoCalmCalmNE3E3W18
G23
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NW9NW8NW8N6N4E3NE7SE4S6CalmCalmS4SE8S4CalmCalm
2 days agoCalmCalm4E5NE6S12W6NW12NW10NW8NW8NW6E4SE3SE6SE5S5CalmCalmS3S3CalmCalmSE4

Tide / Current Tables for Dunedin, St. Joseph Sound, Florida
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Dunedin
Click for Map
Sun -- 05:16 AM EDT     1.04 feet Low Tide
Sun -- 05:46 AM EDT     Moonrise
Sun -- 07:03 AM EDT     Sunrise
Sun -- 11:17 AM EDT     3.11 feet High Tide
Sun -- 06:22 PM EDT     -0.19 feet Low Tide
Sun -- 07:24 PM EDT     Moonset
Sun -- 08:04 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.62.52.11.61.21.11.11.41.92.42.93.132.72.11.40.70.1-0.2-0.10.30.91.62.3

Tide / Current Tables for Old Tampa Bay Entrance (Port Tampa), Florida Current
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Old Tampa Bay Entrance (Port Tampa)
Click for Map
Sun -- 12:52 AM EDT     1.33 knots Max Flood
Sun -- 04:24 AM EDT     -0.00 knots Slack
Sun -- 05:45 AM EDT     Moonrise
Sun -- 06:46 AM EDT     -0.57 knots Max Ebb
Sun -- 07:03 AM EDT     Sunrise
Sun -- 08:53 AM EDT     0.00 knots Slack
Sun -- 11:39 AM EDT     1.00 knots Max Flood
Sun -- 02:43 PM EDT     -0.00 knots Slack
Sun -- 07:23 PM EDT     Moonset
Sun -- 07:29 PM EDT     -1.62 knots Max Ebb
Sun -- 08:03 PM EDT     Sunset
Sun -- 10:39 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.21.31.10.70.2-0.2-0.5-0.6-0.40.10.60.910.80.4-0.1-0.6-1.1-1.4-1.6-1.6-1.2-0.50.3

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 (7,2,3,4)
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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.