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Marine Weather and Tides
Version 3.4 |
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 7:02AM | Sunset 8:03PM | Monday August 21, 2017 11:26 PM EDT (03:26 UTC) | Moonrise 5:48AM | Moonset 7:11PM | Illumination 0% |  |
Marine Forecasts
EDIT (on/off) Help| GMZ850 Coastal Waters From Tarpon Springs To Suwannee River Fl Out 20 Nm- 838 Pm Edt Mon Aug 21 2017 Rest of tonight..Northeast winds 5 to 10 knots then becoming east 10 to 15 knots after midnight. Seas 2 feet or less. Bay and inland waters a light chop. Isolated Thunderstorms. Tuesday..East winds around 10 knots then becoming northeast in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop. Tuesday night..North winds around 10 knots then becoming east after midnight. Seas 2 feet or less. Bay and inland waters a light chop. Wednesday..East winds around 10 knots then becoming northwest in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop. Isolated Thunderstorms. Wednesday night..Northwest winds around 10 knots then becoming northeast around 5 knots after midnight. Seas 2 feet or less. Bay and inland waters a light chop. Scattered Thunderstorms. Thursday..Northeast winds around 5 knots then becoming west around 10 knots in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop. Scattered Thunderstorms. Thursday night..West winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop. Scattered Thunderstorms. Friday..Northwest winds around 5 knots then becoming west around 10 knots in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop. Scattered Thunderstorms. Friday night..Northwest winds around 10 knots then becoming north after midnight. Seas 2 feet or less. Bay and inland waters a light chop. Scattered Thunderstorms. Saturday..North winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop. Scattered Thunderstorms. | GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 838 Pm Edt Mon Aug 21 2017 Synopsis.. A slight increase in the pressure gradient will enhance easterly surges over the gulf waters between a weak tropical wave moving into the gulf of mexico, the bermuda high pressure ridge axis nudging into the area, and another tropical wave over the bahamas. The gradient relaxes as high pressure settles over the region for the end of the week. Expect scattered to numerous storms Tuesday into late week as well. |
7 Day Forecast for Marine Location Near Bayport, FL
Hourly EDIT Helplocation: 28.53, -82.65 debug
Area Discussion for - Tampa Bay, FL
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus62 ktbw 212330 afdtbw area forecast discussion national weather service tampa bay ruskin fl 730 pm edt Mon aug 21 2017 Update (overnight through Tuesday) 23z water vapor and h4 rap analysis shows the florida peninsula resides between a large expanse of upper ridging from carolinas georgia to the western atlantic... And an upper trough retrograding westward across the central western gulf of mexico. A swath of quite dry mid upper level air has pivoted over the central and southern peninsula during the past 24 hours from the se within the large-scale flow between these two features. This drier air as significantly held back the coverage of storms from the i-4 corridor southward this afternoon evening. We were actually able to mix high enough to tap into this drier air... And evaporate quite a bit of the cumulus field. This process that began a bit before the effects of the passing eclipse shadow was actually enhanced by the loss of solar insolation. An even more dramatic decrease in cumulus coverage was evident in satellite imagery closer to where totality passed well off to our north. Have seen a few widely scattered storms the past few hours across the nature coast where the impacts of the drier air have not been as great today. However, the swath of drier air will continue to pivot slowly north and northwest the next 24 hours, and it will be these nature coast zones (north of i-4) that see the greatest impact suppression of storms from the dry air during Tuesday. So, for the rest of tonight, the few isolated shower that have been able to survive the hostile thermodynamic environment aloft will dissipate with sunset and loss of diurnal heating. The remainder of the overnight will see a dry forecast, with typical august overnight temperatures. Tuesday, the dry forecast continues over the landmass through the morning hours, with just a slow development of a few-sct cumulus field. As mentioned above, the driest mid- level air will have move up over the nature coast zones to the north of i-4, and it will be these areas that struggle to see much in the way of showers storms during the afternoon evening. A renewed influx of deep moisture will be slowly trying to move back into the central and southern part of the fl peninsula, with greatest influence the further south and se one travels. Therefore, isolated storms (20% pops) are expected in and around the i-4 corridor the second half of Tuesday, ramping up to scattered coverage (30-40%) down toward sebring punta gorda fort myers). Temperatures look quite warm for your Tuesday, with many spots... Even close to the coast... Reaching the middle 90s. Have a great evening everyone! Aviation (22 00z through 23 00z) Vfr conditions will prevail for all terminals through much, if not all, of the the TAF period. Light easterly or northeast winds overnight will continue into the daylight hours of Tuesday, with some potential for winds to turn nw during the afternoon at ktpa kpie ksrq. Thunderstorm potential will still be below normal, although returning moisture will increase the chance for a passing storm at kpgd kfmy krsw late in the afternoon or evening. Potential further north is still low enough to exclude form current tafs. Prev discussion issued 351 pm edt Mon aug 21 2017 short term (tonight-Tuesday)... one tropical wave lifting off to the NW over northern fl, another wave in place over the eastern bahamas, and high pressure ridging in between with a little dry slot across the central and southern zones this afternoon. This drier mid level air is limiting rain chances for this afternoon, with the greatest chances in place across the nature coast. These features will continue to shift to the W NW through Tuesday with the dry slot lifting north and moisture returning from the south as the tropical wave approaches and then moves over southern fl through Tuesday. For Tuesday afternoon, the nature coast will have low rain chances, |
while the southern half of the area increases to 40-50 percent chances. Generally E NE flow will be in place through the period, with a weak sea breeze possible near the coast Tuesday afternoon. Temperatures will be near normal for lows, generally in the 70s, and highs will be on the warm side in the lower to mid 90s. Long term (Tuesday night through next Monday)... the start of the long range period will feature a strong upper trough centered over the great lakes with upper level high pressure from the western CONUS into the gulf of mexico. At the surface, high pressure will extend across the western atlantic ocean and the gulf of mexico with a weak tropical low across the far eastern gulf. The forecast remains highly uncertain with respect to the tropical low easterly wave expected to move across the southern tip of florida or florida straits. This feature is currently being affected by an area of drier air and weak wind shear, which is good because it limits the potential for this feature to strengthen into a tropical cyclone. However, conditions may become slightly more favorable by Wednesday. So if this low makes it into the eastern gulf of mexico, it will have to be monitored closely. Given the feature is generally being poorly resolved, models vary in its position over the next 72 hours, with some solutions showing it over the gulf and others just of the east coast of florida. In the current forecast, we expect the low to track across south florida, bringing greatly increased rain chances to areas along and south of i-4. The most recent guidance shows this low will remain a relevant feature through the latter half of the week as it slowly meanders either over south florida, or just off the southwest florida coast. It GOES without saying, this will need to be watched closely for potential tropical development. At the very least, this feature will maintain high rain chances each day as deep tropical moisture mingles with the seabreezes and daytime heating. Locally heavy rainfall may also become a concern, especially south of i-4 where the greatest qpf signal is apparent. Heading into the weekend, a potent shortwave is expected to lead to a deepening of the great lakes trough, allowing a cold front to drop southward into the southeast u.S. The more aggressive european brings the drier post frontal air all the way into northern florida with the more reserved gfs confining it more to georgia and the carolinas. In both cases, an interaction between the remnants of the tropical disturbance and the frontal boundary will likely promote heavy rainfall across portions of the southeastern u.S. Including florida. Temperatures will remain seasonal, becoming slightly cooler for the latter half of the week into the weekend as humidity increases. Marine... winds will increase with an easterly surge overnight as the area remains in weak high pressure between two tropical waves, one over northern florida, and the other over the eastern bahamas. The features will shift west through mid- week, with high pressure then returning over the waters for the end of the week. Scattered showers and storms possible as moisture returns across the area through the rest of the week. No headlines expected through the period. Fire weather... no concerns. Preliminary point temps pops Tpa 78 94 78 92 10 20 10 30 fmy 77 95 77 92 10 40 40 60 gif 75 95 76 94 0 30 10 40 srq 77 95 78 92 10 20 30 30 bkv 72 95 75 94 10 10 10 20 spg 80 94 79 92 10 20 20 30 Tbw watches warnings advisories Fl... None. Gulf waters... None. Update aviation... Mroczka previous discussion... Hubbard |
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 |
| ARPF1 - APK - Aripeka, FL | 7 mi | 93 min | Calm G 1.9 | 82°F | 1020 hPa | |||
| FHPF1 - Fred Howard Park, FL | 27 mi | 93 min | E 6 G 8 | 84°F | 1020 hPa | |||
| CWBF1 - 8726724 - Clearwater Beach, FL | 39 mi | 45 min | E 5.1 G 7 | 87°F | 89°F | 1019.8 hPa | ||
| TSHF1 - 8726667 - East Bay Causeway, FL | 43 mi | 45 min | E 5.1 G 7 | |||||
| TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL | 43 mi | 51 min | ENE 5.1 G 8 | |||||
| MCYF1 | 44 mi | 39 min | 90°F | |||||
| CDRF1 - Cedar Key, FL | 46 mi | 27 min | ENE 8.9 G 12 | 81°F | 1020.5 hPa (+1.0) | 76°F | ||
| OPTF1 - 8726607 - Old Port Tampa, FL | 47 mi | 39 min | E 1.9 G 4.1 | 84°F | 89°F | 1020 hPa |
Wind History for Clearwater Beach, FL
(wind in knots) EDIT (on/off) Help| 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 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 | -12 PM | 9 PM | 10 PM | |
| Last 24hr | SE G9 | SE G9 | E G8 | E | E | E | E | E | E G11 | E G10 | E | E G11 | E G12 | E G12 | E G13 | E G8 | E | SE | N | N | N | E G7 | E | |
| 1 day ago | N | N | NE | E G7 | E | NE | E | E | SE G9 | SE G10 | SE G8 | E | SE | E G5 | E | NW G8 | NW | NW G10 | NW | N G8 | N G11 | E G18 | SE G16 | SE G10 |
| 2 days ago | SE G9 | SE | E | E | SE G10 | SE | SE | SE G7 | E | SE | -- | -- | N | W | NW G10 | NW | N | NW | NW | W G12 | NW | W | NW | NW |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Brooksville, Hernando County Airport, FL | 11 mi | 34 min | ENE 6 | 10.00 mi | Fair | 77°F | 72°F | 85% | 1020.1 hPa |
| Crystal River Airport, FL | 24 mi | 32 min | N 0 | 10.00 mi | Fair | 77°F | 73°F | 89% | 1020.3 hPa |
Wind History from BKV (wind in knots)
| 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 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 | |
| Last 24hr | E | E | E | NE | NE | E | Calm | Calm | NE | E | E | E | E | E | E | NE | NE | E | E | NE | E | E | E | |
| 1 day ago | Calm | E | Calm | NE | Calm | SE | Calm | Calm | Calm | SE | SE | NE | E | E | E | E | SE | SE | SE | Calm | E | |||
| 2 days ago | SW | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | S | S | Calm | Calm | W | W | NE | NE | NW | W | NW | Calm | Calm | SE |
Tide / Current Tables for Bayport, Florida
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| Bayport Click for Map Mon -- 02:35 AM EDT 3.08 feet High Tide Mon -- 06:48 AM EDT Moonrise Mon -- 07:03 AM EDT Sunrise Mon -- 08:46 AM EDT 0.96 feet Low Tide Mon -- 02:00 PM EDT 3.85 feet High Tide Mon -- 02:31 PM EDT New Moon Mon -- 08:03 PM EDT Sunset Mon -- 08:10 PM EDT Moonset Mon -- 09:36 PM EDT -0.14 feet Low Tide 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 |
| 1.7 | 2.5 | 3 | 3.1 | 2.8 | 2.4 | 1.9 | 1.4 | 1.1 | 1 | 1.3 | 2.1 | 2.9 | 3.6 | 3.8 | 3.7 | 3.2 | 2.6 | 1.8 | 1 | 0.4 | -0.1 | -0.1 | 0.4 |
Tide / Current Tables for Aripeka, Hammock Creek, Florida
EDIT (on/off) Help One Week of Data| Aripeka Click for Map Mon -- 02:00 AM EDT 2.97 feet High Tide Mon -- 06:48 AM EDT Moonrise Mon -- 07:03 AM EDT Sunrise Mon -- 08:33 AM EDT 0.78 feet Low Tide Mon -- 01:26 PM EDT 3.71 feet High Tide Mon -- 02:31 PM EDT New Moon Mon -- 08:03 PM EDT Sunset Mon -- 08:10 PM EDT Moonset Mon -- 09:23 PM EDT -0.11 feet Low Tide 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 |
| 2.1 | 2.7 | 3 | 2.9 | 2.6 | 2.1 | 1.6 | 1.1 | 0.8 | 0.8 | 1.4 | 2.2 | 3.1 | 3.7 | 3.7 | 3.4 | 2.9 | 2.2 | 1.5 | 0.8 | 0.2 | -0.1 | 0 | 0.6 |
Weather Map and Satellite Images
(on/off) HelpWeather Map | IR Satellite Image from GEOS GOES Local Image of Southeast EDIT  |
Wind Forecast for Tampa Bay, FL (23,6,7,8)
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Ground Weather Radar Station Tampa Bay Area, FL
(on/off) Help
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. |