Friday, August18, 2017 L-36.com


Marine Weather and Tides
Dunedin, 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 7:02AMSunset 8:07PM Friday August 18, 2017 2:17 PM EDT (18:17 UTC) Moonrise 2:40AMMoonset 4:38PM Illumination 13% Phase: Waning Crescent; Moon at 26 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- 957 Am Edt Fri Aug 18 2017
This afternoon..East winds around 5 knots then becoming northwest early in the afternoon, then increasing to around 10 knots late in the afternoon. Bay and inland waters a light chop. Wind and waters higher near scattered Thunderstorms.
Tonight..North winds around 5 knots then becoming southeast around 5 knots in the late evening and overnight. Bay and inland waters smooth. Scattered Thunderstorms in the evening.
Saturday..Southeast winds around 5 knots then becoming west late in the afternoon. Bay and inland waters smooth.
Saturday night..Northwest winds around 5 knots then becoming east around 5 knots after midnight. Bay and inland waters smooth. Isolated Thunderstorms.
Sunday..Southeast winds around 10 knots. Bay and inland waters a light chop. Scattered Thunderstorms.
Sunday night..East winds around 10 knots. Bay and inland waters a light chop. Isolated Thunderstorms.
Monday..East winds around 10 knots. Bay and inland waters a light chop. Scattered Thunderstorms.
Monday night..East winds around 10 knots. Bay and inland waters a light chop. Scattered Thunderstorms in the evening.
Tuesday..East winds around 10 knots. Bay and inland waters a light chop. Scattered Thunderstorms.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 957 Am Edt Fri Aug 18 2017
Synopsis..Weak bermuda high pressure will remain across the region through the weekend with light winds and slight seas. Winds are expected to increase with easterly surges early next week as the pressure gradient tightens between low pressure to the south and high pressure to the north. Otherwise, the primary marine concern will be daily scattered Thunderstorms which may produce dangerous lightning, locally stronger winds and choppy seas.

7 Day Forecast for Marine Location Near Dunedin, FL
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location: 28.01, -82.82     debug


Area Discussion for - Tampa Bay, FL
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Fxus62 ktbw 181734
afdtbw
area forecast discussion
national weather service tampa bay ruskin fl
134 pm edt Fri aug 18 2017

Aviation
Brief MVFR CIGS vsbys may impact the terminal sites through
00z as scattered showers and thunderstorms move across the
region outside of the convectionVFR will prevail. West to
northwest in the 7 to 9 knot range will prevail through 00z
with gusts up to 40 knots possible in the vicinity of tsra.

Light to calm winds will return to all terminals after 02z
tonight, becoming southwest to west at 5 to 7 knots after
14z on Saturday.

Prev discussion issued 917 am edt Fri aug 18 2017

A few strong storms possible this afternoon...

update...

a large upper level low located over north-central cuba
with a trough axis extending north into the florida
peninsula this morning will continue to move slowly to the
west the remainder of today. Water vapor imagery as well as
12z mfl RAOB data shows drier and cooler mid level air
associated with the upper low advecting into southern
portions of the peninsula early this morning where pw's at
mfl has dropped to 1.46 inches with 500mb temperatures now
at -9c. This drier and cooler mid level air may lead to some
some strong convection developing along the sea breeze
across southwest florida during the afternoon hours with
strong downburst winds and small hail being the main hazards
along with frequent lightning strikes and heavy rain.

Further to the north across central and northern portions of
the forecast area deep layered moisture (pw's 2+ inches and
milder mid level temperatures will again support scattered
to numerous showers and storms developing along the sea
breeze and outflow boundaries during the afternoon with a
very weak steering flow through 700mb again supporting slow
and erratic storm motion with some very heavy rainfall
amounts possible in some locations along with frequent
lightning strikes and some gusty winds. Given the cooler
drier air aloft will add gusty winds and hail wording into
the forecast for southwest florida for the afternoon, and
will also add heavy rain and gusty winds wording for central
and northern zones given the high pw's and slow and erratic
storm motion. Other than these minor tweaks no other changes
are planned at this time. Zone update will be out by 10 am.

Marine...

high pressure from the atlantic extending west across the
central florida peninsula and into the eastern gulf will
maintain light winds and slight seas over the gulf waters
the remainder of today with a weak pressure pattern
supporting an onshore sea breeze component developing along
the coast during the afternoon. Wind and seas will be higher
in the vicinity of thunderstorms, otherwise no headlines
are expected. Ongoing forecast is on track with no changes
expected in the next forecast issuance around 10 am this
morning.

Tbw watches warnings advisories...

fl... None.

Gulf waters... None.

Aviation... 57 mcmichael


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CWBF1 - 8726724 - Clearwater Beach, FL 2 mi48 min SSE 5.1 G 7 83°F 89°F1017.2 hPa
FHPF1 - Fred Howard Park, FL 10 mi84 min SSE 8 G 11 83°F 1016.8 hPa
OPTF1 - 8726607 - Old Port Tampa, FL 18 mi48 min WSW 12 G 13 84°F 89°F1017.2 hPa
SAPF1 - 8726520 - St. Petersburg, FL 20 mi48 min W 7 G 8.9 83°F 89°F1017.4 hPa
CLBF1 20 mi84 min N 5.1 G 8.9 82°F 1016.4 hPa
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 21 mi54 min NW 8 G 11
TSHF1 - 8726667 - East Bay Causeway, FL 22 mi54 min WNW 8.9 G 14
MCYF1 22 mi48 min 90°F
MTBF1 27 mi48 min Calm G 2.9 83°F 1017.1 hPa
PMAF1 29 mi48 min 80°F 91°F1016.5 hPa
ARPF1 - APK - Aripeka, FL 30 mi84 min NW 5.1 G 8.9 85°F 1016.8 hPa
42098 30 mi78 min 90°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, FL10 mi25 minS 510.00 miMostly Cloudy85°F75°F72%1016.8 hPa
Tampa, Tampa International Airport, FL16 mi25 minN 510.00 miLight Rain81°F75°F82%1017.3 hPa
Albert Whitted Airport, FL19 mi25 minWNW 910.00 miMostly Cloudy87°F73°F63%1016.3 hPa
Macdill Air Force Base, Fl., FL19 mi80 minWSW 11 G 1710.00 miA Few Clouds88°F75°F67%1017.2 hPa
Tampa, Peter O Knight Airport, FL21 mi43 minWNW 7 G 1410.00 miPartly Cloudy90°F73°F59%1017.3 hPa

Wind History from PIE (wind in knots)
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Last 24hrNW12NW10NW8NW8NW6E4SE3SE6SE5S5CalmCalmS3S3CalmCalmSE4CalmCalmNE3E3W18
G23
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1 day agoNW96NW7NW7N4NW4NW6NW5CalmCalmCalmE6SE4S3CalmS3CalmCalmCalm4E5NE6S12W6
2 days agoW9
G15
W9W9W11NW6W7W3NW4NW4W4CalmCalmS3CalmCalmCalmCalmCalmN4NE44NE3S63

Tide / Current Tables for Dunedin, St. Joseph Sound, Florida
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Dunedin
Click for Map
Fri -- 03:10 AM EDT     1.35 feet Low Tide
Fri -- 03:40 AM EDT     Moonrise
Fri -- 07:02 AM EDT     Sunrise
Fri -- 09:15 AM EDT     2.84 feet High Tide
Fri -- 04:45 PM EDT     -0.06 feet Low Tide
Fri -- 05:38 PM EDT     Moonset
Fri -- 08:06 PM EDT     Sunset
Fri -- 11:10 PM EDT     2.50 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.11.71.51.31.41.722.42.72.82.82.52.11.50.90.40-0.10.20.61.21.92.32.5

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
Fri -- 02:57 AM EDT     -0.00 knots Slack
Fri -- 03:40 AM EDT     Moonrise
Fri -- 04:55 AM EDT     -0.29 knots Max Ebb
Fri -- 06:44 AM EDT     0.00 knots Slack
Fri -- 07:02 AM EDT     Sunrise
Fri -- 09:37 AM EDT     0.78 knots Max Flood
Fri -- 12:35 PM EDT     -0.00 knots Slack
Fri -- 05:37 PM EDT     Moonset
Fri -- 05:57 PM EDT     -1.49 knots Max Ebb
Fri -- 08:05 PM EDT     Sunset
Fri -- 09:09 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.70.3-0-0.2-0.3-0.20.10.50.70.80.60.2-0.2-0.6-0.9-1.2-1.4-1.5-1.3-0.8-0.10.61.1

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 (14,3,4,5)
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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.