Wednesday, March29, 2017 L-36.com


Marine Weather and Tides
Madeira Beach, FL

Version 3.4
What's New / NOTES
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.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:22AMSunset 7:48PM Wednesday March 29, 2017 7:06 PM EDT (23:06 UTC) Moonrise 7:40AMMoonset 8:41PM Illumination 6% Phase: Waxing Crescent; Moon at 2 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- 246 Pm Edt Wed Mar 29 2017
Tonight..Northwest winds around 10 knots then becoming southeast around 5 knots after midnight. Bay and inland waters a light chop.
Thursday..Southeast winds 5 to 10 knots then becoming southwest around 15 knots in the afternoon. Bay and inland waters a moderate chop.
Thursday night..Southwest winds around 10 knots then becoming south after midnight. Bay and inland waters a light chop.
Friday..South winds 5 to 10 knots then becoming southwest around 15 knots in the afternoon. Bay and inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Friday night..Southwest winds around 10 knots then becoming west around 5 knots after midnight. Bay and inland waters a light chop.
Saturday..West winds around 5 knots. Bay and inland waters smooth.
Saturday night..Northwest winds around 5 knots then becoming north after midnight. Bay and inland waters smooth.
Sunday..East winds around 5 knots then becoming south in the afternoon. Bay and inland waters smooth.
Sunday night..Southwest winds around 5 knots then becoming southeast around 10 knots after midnight. Bay and inland waters a light chop.
Monday..South winds around 15 knots. Bay and inland waters a moderate chop. A slight chance of showers.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 246 Pm Edt Wed Mar 29 2017
Synopsis.. High pressure will remain over the region through Thursday...with no marine hazards expected. Winds will become onshore with the sea breeze through this afternoon and into the evening. A more southerly flow will develop for Thursday ahead of an approaching cold front...which will bring shower and possibly some Thunderstorm activity for Friday. Winds Thursday night into Friday could increase close to cautionary criteria...otherwise no headlines are expected. Lighter winds and drier conditions return for the weekend as high pressure moves back over the area.

7 Day Forecast for Marine Location Near Madeira Beach, FL
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location: 27.79, -82.78     debug


Area Discussion for - Tampa Bay, FL
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Fxus62 ktbw 291843
afdtbw
area forecast discussion
national weather service tampa bay ruskin fl
243 pm edt Wed mar 29 2017

Short term (tonight-Thursday)
The overall set-up currently observed will remain in place through
tonight- ridging aloft with surface high pressure centered east of
the state. This will allow winds to become light and variable
overnight and we should again see some patchy ground fog toward
daybreak. Lows in the morning will be mild and above normal.

The first half of Thursday will start out similar to today. A closed
low will then move into the central part of the country by the end of
the day, suppressing the ridge a bit and generally lowering its
influence over florida. The surface ridge will also weaken a bit as
it pushes eastward ahead of an approaching cold front. Through the
end of the day, this will really only turn our winds more to the
south, although we should still have a sea breeze right near the
coast. Overall, there should be enough suppression from the ridge to
keep rainfall out of the forecast and temperatures will remain on the
warm side, just a bit cooler at the coast.

Long term (Thursday night-Wednesday)
Upper level ridging sits along the eastern seaboard as an upper low over
missouri and associated troughing moves eastward. A more zonal pattern
sets up by Friday afternoon and will persist through Sunday when ridging
sets up over the region. On the surface, high pressure off the mid-atlantic
coast ridges south, while an area of low pressure over missouri and associated
frontal boundary moves eastward. This front will bring a chance of showers
and slight chance of thunderstorms to the area on Friday. The front clears
the area by late Friday into Saturday as high pressure builds into the
area bringing clearing conditions through the weekend. Another frontal
system develops by Tuesday next week and will bring another chance of
rain showers to the area by Monday morning through Tuesday.

Aviation
Vfr conditions are expected through most of the forecast period. Some
patchy ground fog could affect terminals across southwest florida and
possible klal toward daybreak, withVFR then returning for the rest
of the day. Winds will become light and variable tonight and then
more southerly through Thursday.

Marine
High pressure will remain over the region through Thursday, with no
marine hazards expected. Winds will become onshore with the sea
breeze through this afternoon and into the evening. A more southerly
flow will develop for Thursday ahead of an approaching cold front,
which will bring shower and possibly some thunderstorm activity for
Friday. Winds Thursday night into Friday could increase close to
cautionary criteria, otherwise no headlines are expected. Lighter
winds and drier conditions return for the weekend as high pressure
moves back over the area.

Fire weather
Relative humidity values will fall near critical levels east of
around the i-75 corridor for Thursday afternoon, and may briefly
drop just below 35%, but long durations are not expected and light
winds will preclude red flag conditions. Low-level moisture will
increase for Friday, and relative humidity values are expected to
remain above 35%. Some patchy fog is possible toward daybreak
Thursday morning, but widespread dense fog is not expected.

Preliminary point temps/pops
Tpa 66 82 68 81 / 0 0 10 40
fmy 65 84 66 85 / 0 0 0 20
gif 64 88 65 85 / 0 0 10 30
srq 65 76 67 78 / 0 0 10 30
bkv 61 86 62 83 / 0 0 10 40
spg 67 80 68 80 / 0 0 10 40

Tbw watches/warnings/advisories
Fl... None.

Gulf waters... None.

Short term/aviation/marine/fire weather... 05/carlisle
mid term/long term/decision support... 74/wynn


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CLBF1 6 mi73 min W 13 G 17 75°F 1015 hPa
SAPF1 - 8726520 - St. Petersburg, FL 8 mi49 min W 11 G 15 77°F 77°F1015.4 hPa
OPTF1 - 8726607 - Old Port Tampa, FL 13 mi49 min W 11 G 13 78°F 75°F1015.9 hPa
MTBF1 13 mi49 min W 13 G 15 74°F 1016.2 hPa65°F
CWBF1 - 8726724 - Clearwater Beach, FL 13 mi49 min W 9.9 G 12 73°F 74°F1016.4 hPa
42098 16 mi37 min 72°F1 ft
PMAF1 16 mi49 min 74°F 78°F1015.3 hPa
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 21 mi55 min W 6 G 8.9
TSHF1 - 8726667 - East Bay Causeway, FL 21 mi49 min W 9.9 G 12
MCYF1 21 mi49 min 77°F
FHPF1 - Fred Howard Park, FL 25 mi133 min W 7 G 8.9 76°F 1015.7 hPa
42013 - C10 - Navy-2 43 mi97 min W 7.8 G 9.7 69°F 72°F
ARPF1 - APK - Aripeka, FL 45 mi133 min WNW 8 G 9.9 76°F 1015.1 hPa

Wind History for St. Petersburg, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St. Petersburg Whitted Airport, FL8 mi74 minWNW 1110.00 miFair77°F62°F60%1015.1 hPa
St. Petersburg/Clearwater Airport, FL10 mi74 minWSW 1310.00 miFair81°F60°F49%1015.7 hPa
Macdill Air Force Base, Fl., FL15 mi69 minWSW 1110.00 miPartly Cloudy81°F64°F57%1015.9 hPa
Tampa, Tampa International Airport, FL18 mi74 minW 1210.00 miMostly Cloudy82°F63°F53%1015.8 hPa
Tampa, Peter O Knight Airport, FL20 mi72 minW 710.00 miMostly Cloudy82°F64°F55%1015.9 hPa

Wind History from SPG (wind in knots)
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Last 24hrW8NW6NW6N5N6N4E8E10E8N4NE4NE4E5SE4SE5S5E3E3E3E4W9SW11W14W11
1 day ago3N4NW6N8N5NE5E11SE9SE8SE8SE8S7S4SE4SE5E4E3SE3S6S7SW8W11W9W11
2 days agoW8W9NW6N5NE5CalmS7S4SE6SE8SE10SE8SE7SE7SE6SE6E4NE4NE3CalmCalmSE3NE3NW7

Tide / Current Tables for Johns Pass, Boca Ciega Bay, Florida
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Johns Pass
Click for Map
Wed -- 01:31 AM EDT     1.81 feet High Tide
Wed -- 07:24 AM EDT     Sunrise
Wed -- 07:30 AM EDT     0.42 feet Low Tide
Wed -- 08:39 AM EDT     Moonrise
Wed -- 01:14 PM EDT     2.02 feet High Tide
Wed -- 07:47 PM EDT     Sunset
Wed -- 08:12 PM EDT     -0.16 feet Low Tide
Wed -- 09:40 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.81.81.61.310.60.40.40.71.11.51.8221.71.30.80.3-0-0.2-0.10.20.6

Tide / Current Tables for Tampa Bay Entrance (Egmont Channel), Florida Current
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Tampa Bay Entrance (Egmont Channel)
Click for Map
Wed -- 01:11 AM EDT     1.76 knots Max Flood
Wed -- 04:18 AM EDT     -0.00 knots Slack
Wed -- 06:57 AM EDT     -1.25 knots Max Ebb
Wed -- 07:24 AM EDT     Sunrise
Wed -- 08:39 AM EDT     Moonrise
Wed -- 09:50 AM EDT     0.00 knots Slack
Wed -- 01:05 PM EDT     1.63 knots Max Flood
Wed -- 03:56 PM EDT     -0.00 knots Slack
Wed -- 07:12 PM EDT     -1.98 knots Max Ebb
Wed -- 07:47 PM EDT     Sunset
Wed -- 09:40 PM EDT     Moonset
Wed -- 10:49 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.41.81.61.10.3-0.5-1.1-1.3-1.1-0.60.10.81.41.61.40.8-0.1-1-1.7-2-1.8-1.4-0.70.1

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 (19,4,5,8)
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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.