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Marine Weather and Tides
Version 3.4 |
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues. 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. |
| Sunrise 6:57AM | Sunset 7:59PM | Saturday April 21, 2018 5:48 AM EDT (09:48 UTC) | Moonrise 10:53AM | Moonset 12:00AM | Illumination 35% |  |
Marine Forecasts
EDIT (on/off) Help| GMZ853 Coastal Waters From Englewood To Tarpon Springs Fl Out 20 Nm- 347 Am Edt Sat Apr 21 2018 .small craft exercise caution this morning... Today..East winds 15 to 20 knots then becoming south 5 to 10 knots in the afternoon. Seas 2 to 3 feet. Bay and inland waters choppy. Tonight..North winds around 10 knots then becoming east after midnight. Seas 2 feet or less. Bay and inland waters a light chop. Sunday..Southeast winds around 10 knots then becoming south in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop. Sunday night..Southeast winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop. A slight chance of Thunderstorms. Monday..South winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop. A chance of Thunderstorms. Monday night..South winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. A chance of showers and a slight chance of Thunderstorms. Tuesday..Southwest winds around 10 knots then becoming west in the afternoon. Seas 2 feet. Bay and inland waters a light chop. A chance of showers and a slight chance of Thunderstorms. Tuesday night..West winds around 10 knots. Seas 2 to 3 feet. Bay and inland waters a light chop. Wednesday..West winds around 10 knots. Seas 2 to 3 feet. Bay and inland waters a light chop. | GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 347 Am Edt Sat Apr 21 2018 Synopsis..A stationary frontal boundary across the central waters will gradually dissipate today. High pressure will build over the mid atlantic coast tightening the pressure gradient across the coastal waters with increasing easterly winds today and tonight...with advisory levels winds possible at times...mainly over the northern and central waters. A cold front will approach the waters Sunday night and Monday with an increasing chance of showers and Thunderstorms. |
7 Day Forecast for Marine Location Near Bradenton Beach city, FL
Hourly EDIT Helplocation: 27.47, -82.69 debug
Area Discussion for - Tampa Bay, FL
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus62 ktbw 210747 afdtbw area forecast discussion national weather service tampa bay ruskin fl 347 am edt Sat apr 21 2018 Short term (today-Sunday) relatively strong u l southern stream flow across the southern tier of the conus will persist through the weekend. A strong cut-off u l low will push across the central southern plains today and tonight... And the lower mississippi valley on Sunday. At the surface, a stationary boundary across the central florida peninsula will dissipate today. High pressure will build along the mid atlantic coast with a tightening gradient across the northern and central florida peninsula today and tonight. Increasing convergent easterly boundary layer flow off the atlantic today will aid in enhancing low level moisture and weak instability with a few showers possibly developing this afternoon, mainly over the interior, below a gradually eroding subsidence inversion around 060- 080 feet. On Sunday, a cold front will push across the lower mississippi valley and north central gulf of mexico. Boundary layer winds will veer to the southeast across west central and southwest florida with deep layer moisture and instability gradually increasing across the region through the afternoon hours. Scattered showers and possibly a few thunderstorms will develop Sunday afternoon across the forecast area. Long term (Sunday night through next week) As we enter the long range period, we will be in the midst of a pattern change. A powerful upper low will meander eastward toward the region. Strong surface ridging will begin to lift northeastward, allowing south to southeast flow to develop across the region. Surface and upper level low pressure will be the primary weather makers for the medium range, with more settled weather toward the latter half of the long term period. Showers and perhaps a few thunderstorms will likely be ongoing Sunday night ahead of an approaching upper trough. While thunderstorm activity may wane overnight, spotty shower activity is likely to persist withing a strong warm air advection regime. Given persistent southerly flow a rather mild night is expected with lows near 70 degrees most areas. The most active period will occur Monday and Monday night as the stacked low pressure system drifts eastward across alabama and georgia. This will bring a weak pre frontal trough across the peninsula. With the help of daytime heating, abundant moisture, and subtle seabreeze circulations, rather widespread shower and thunderstorm coverage is expected, especially across the interior |
peninsula. Showers and a few storms will likely move in off the gulf in the morning hours with activity becoming more widespread east of i-75 during the afternoon. A few stronger storms may develop capable of mainly strong wind gusts and torrential rainfall. Most of this activity will shift into eastern florida by late afternoon, though a few showers may linger. The main trough and surface low will migrate northeastward Tuesday into Wednesday, allowing a cold front to eventually move through the area. Frontally induced showers and storms can be expected Tuesday with drier conditions expected Wednesday in the wake of the front. While the air will certainly be drier behind the front, the airmass does not look particularly cool. Therefore highs will generally remain in the low to possibly mid 80s from mid week on. Long range models depict another upper disturbance may move across the area sometime late next week into next weekend with low chances for showers. For now, will maintain a mentionable chance of rain, though confidence on timing is very low at this time. Aviation Areas of MVFR CIGS vcnty tpa pie lal srq early this morning, otherwiseVFR conditions will prevail through the day. LCL vfr CIGS vcnty all terminals this afternoon along with the risk of a shower, with the best chance vcnty lal. Marine Elevated east winds will persist over the northern waters through tonight with borderline SCA conditions likely. Gradient will weaken on Sunday, but tighten a bit ahead of cold front Sunday night and Monday with winds veering to the south. A cold front will push across the waters Monday night and Tuesday with winds veering to the northwest. Fire weather No fire weather hazards are expected today or Sunday as relative humidity values are expected to remain above critical levels. Preliminary point temps pops Tpa 83 71 82 70 30 30 40 30 fmy 88 70 87 70 10 10 30 30 gif 85 70 83 68 30 30 50 40 srq 85 70 81 69 10 0 20 30 bkv 83 65 83 66 30 20 40 40 spg 85 72 85 71 30 20 30 30 Tbw watches warnings advisories Fl... None. Gulf waters... None. Short term aviation marine fire weather... 13 oglesby mid term long term decision support... 84 austin |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a map| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
| PMAF1 | 13 mi | 48 min | 67°F | 77°F | 1018.8 hPa (-1.1) | |||
| MTBF1 | 14 mi | 48 min | ENE 14 G 17 | 68°F | 1019 hPa (-1.1) | 64°F | ||
| 42098 | 15 mi | 48 min | 74°F | 3 ft | ||||
| CLBF1 | 18 mi | 114 min | ENE 4.1 G 8 | 71°F | 1018.6 hPa | |||
| SAPF1 - 8726520 - St. Petersburg, FL | 20 mi | 54 min | NE 13 G 16 | 69°F | 75°F | 1018.5 hPa | ||
| OPTF1 - 8726607 - Old Port Tampa, FL | 28 mi | 48 min | ENE 6 G 9.9 | 67°F | 75°F | 1019.1 hPa (-1.3) | ||
| VENF1 - Venice, FL | 30 mi | 48 min | ENE 13 G 16 | 68°F | 75°F | 1018.2 hPa (-0.9) | 67°F | |
| MCYF1 | 34 mi | 48 min | 77°F | |||||
| TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL | 35 mi | 60 min | NNE 6 G 8.9 | |||||
| CWBF1 - 8726724 - Clearwater Beach, FL | 36 mi | 48 min | ENE 8.9 G 11 | 67°F | 75°F | 1019.3 hPa (-1.4) | ||
| FHPF1 - Fred Howard Park, FL | 48 mi | 114 min | ENE 12 G 16 | 66°F | 1020.2 hPa |
Wind History for C-Cut, FL
(wind in knots) EDIT (on/off) Help| Last 24hr | ||||||||||||||||||||||||
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Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Sarasota / Bradenton, Sarasota-Bradenton International Airport, FL | 9 mi | 55 min | ENE 11 | 10.00 mi | Fair | 68°F | 64°F | 90% | 1018 hPa |
| Albert Whitted Airport, FL | 21 mi | 55 min | ENE 15 | 8.00 mi | Overcast | 70°F | 66°F | 90% | 1018.7 hPa |
Wind History from SRQ (wind in knots)
| 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | |
| Last 24hr | Calm | Calm | Calm | NE | N | W | W | W | W | W | W | W | W | W | NW | N | N | N | NE | NE | NE G17 | NE G17 | E | E |
| 1 day ago | Calm | Calm | Calm | SW | SW | SW | W | W | W | W | W | W | W | W | NW | N | N | Calm | Calm | NW | NW | NW | NW | N |
| 2 days ago | E | E | E | E | SE | Calm | SW | W | W | W | W | W | W | W | NW | NW | Calm | Calm | Calm | SW | Calm | Calm | Calm | Calm |
Tide / Current Tables for Cortez, Sarasota Bay, Florida
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| Cortez Click for Map Sat -- 12:54 AM EDT Moonset Sat -- 07:00 AM EDT Sunrise Sat -- 11:52 AM EDT Moonrise Sat -- 03:49 PM EDT 2.28 feet High Tide Sat -- 07:58 PM EDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| -0.3 | -0.2 | 0.1 | 0.4 | 0.7 | 1 | 1.1 | 1.2 | 1.3 | 1.3 | 1.3 | 1.4 | 1.6 | 1.8 | 2.1 | 2.2 | 2.3 | 2.2 | 2 | 1.7 | 1.3 | 0.9 | 0.5 | 0.1 |
Tide / Current Tables for Tampa Bay Entrance (Egmont Channel), Florida Current
EDIT (on/off) Help One Week of Data| Tampa Bay Entrance (Egmont Channel) Click for Map Sat -- 12:55 AM EDT Moonset Sat -- 02:01 AM EDT 0.00 knots Slack Sat -- 05:32 AM EDT 1.41 knots Max Flood Sat -- 07:00 AM EDT Sunrise Sat -- 10:42 AM EDT 0.20 knots Min Flood Sat -- 11:52 AM EDT Moonrise Sat -- 03:38 PM EDT 0.89 knots Max Flood Sat -- 06:26 PM EDT -0.00 knots Slack Sat -- 07:59 PM EDT Sunset Sat -- 10:31 PM EDT -1.86 knots Max Ebb Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| -1.2 | -0.6 | -0 | 0.6 | 1.1 | 1.4 | 1.4 | 1.1 | 0.8 | 0.4 | 0.2 | 0.2 | 0.3 | 0.5 | 0.7 | 0.9 | 0.9 | 0.7 | 0.3 | -0.4 | -1 | -1.5 | -1.8 | -1.8 |
Weather Map and Satellite Images
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GOES Local Image of Southeast EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
target = "new">Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Tampa Bay, FL (5,6,7,8)
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Ground Weather Radar Station Tampa Bay Area, FL
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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. |