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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 7:36AM | Sunset 6:52PM | Tuesday October 24, 2017 7:06 AM EDT (11:06 UTC) | Moonrise 10:44AM | Moonset 9:36PM | Illumination 18% |  |
Marine Forecasts
EDIT (on/off) Help| GMZ850 Coastal Waters From Tarpon Springs To Suwannee River Fl Out 20 Nm- 412 Am Edt Tue Oct 24 2017 Today..North winds around 15 knots becoming northwest in the afternoon. Seas 2 to 3 feet. Bay and inland waters a moderate chop. Tonight..Northwest winds around 15 knots becoming north 20 to 25 knots. Seas 2 to 4 feet. Bay and inland waters choppy to rough. Wednesday..North winds 20 to 25 knots then becoming northwest 15 to 20 knots in the afternoon. Seas 3 to 4 feet. Bay and inland waters choppy. Wednesday night..Northwest winds around 15 knots becoming north 10 to 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop. Thursday..North winds around 10 knots then becoming northeast 5 to 10 knots in the afternoon. Seas 2 to 3 feet. Bay and inland waters a light chop. Thursday night..East winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. Friday..East winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. Friday night..East winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. Saturday..Northeast winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. A chance of showers. | GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 412 Am Edt Tue Oct 24 2017 Synopsis.. A cold front will continue to sag south through the eastern gulf of mexico today...shifting winds northerly in its wake. These winds will occasionaly approach 15 knots. A secondary and stronger cold front will quickly move through the forecast waters tonight. Winds increase rapidly to advisory levels behind this front and continue strong into the day Wednesday. Winds will then subside into Thursday as high pressure builds over the region. |
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 240747 afdtbw area forecast discussion national weather service tampa bay ruskin fl 347 am edt Tue oct 24 2017 Synopsis 08z water vapor and h4 rap analysis shows a now highly amplified upper level pattern over the conus... Highlighted by a deepening longwave trough to the east of the continental divide. Two significant pieces of shortwave energy are located within this flow that will have a significant impact on our local weather for the next several days. The first piece is located within the base of the trough approaching the tn valley, while the second is quickly translating southward along the backside of the trough over the upper midwest. These two features will "combine forces" during the next 12-24 hours in order to further amplify this longwave trough all the way down into the deep south eastern gulf of mexico. An initial shortwave that passed north of the region Monday has accelerated up the eastern seaboard... And left behind a cold front it helped deliver to the florida peninsula. With deep layer synoptic flow now nearly parallel to the front in the wake of this energy, the front has slowed to a crawl southward across the region. This front will separate the forecast area today... With rain-free conditions north of the i-4 corridor, and frontal showers and storms still in the forecast further to the south within a zone of deep moisture and closer proximity to the frontal focus. However, this slow down is only temporary. The amplifying trough discussed above will deliver a secondary cold front to the fl peninsula this evening and tonight. This secondary front will have plenty of momentum to clear the entire region and bring the highly anticipated and welcome fall-like airmass for Wednesday and Thursday to all forecast zones. Regional radars show the greatest concentration of showers as of 4am from highlands to lee counties and the adjacent marine zones. The intensity of this activity has been on the decrease past several hours, and should see a transition to more scattered type showers by dawn. Short term (today through Wednesday) Today will be the transition day between the muggy and showery conditions on Monday, and the dry and fall-like airmass arriving for Wednesday. The forecast area will be split north and south today... With northern areas (north of i-4) far enough behind the initial front to stay dry... With some initial drop in dewpoints. The front will be located south of the i-4 corridor today... Making very slow progress southward. Therefore... For the tampa bay lakeland areas... An few isolated shower can not be ruled out during the first half of the morning, but otherwise... Today will turn out generally dry... With increasing amounts of Sun over time. The further south and southeast one travels, the higher the rain chances today... Especially during the afternoon with the help on diurnal instability. Late in the afternoon... The upper trough will be approaching quickly from the northwest... With a secondary cold front reaching levy county and the northern marine zones by around 00z. Tonight... Strong secondary cold front will quickly translate south down the peninsula and through the eastern gulf of mexico. This boundary will be dry... With very little moisture to work with. Its passage will be noted with a slight increase in winds over land, and a big increase in winds over the eastern gulf of mexico... Where advisory level northerly winds will quickly develop overnight. The initial cold front still down toward highlands county fort myers area may support a few more hours with scattered showers through late evening, but thereafter, the secondary front and digging upper trough will shift the residual moisture quickly out of our area. The second half of tonight looks dry for all our forecast zones... With cooler and much drier air quickly filtering in from the north. Would say most areas will become mostly clear given the lack of moisture aloft, however, will not be surprised to see some lower level stratocu developing off the eastern gulf of mexico toward dawn... Given the ssts... Single digit 850mb temps, and strong pva associated with the digging trough. We are certainly going to have the vertical temp differential to support the lower clouds, but the exact wind direction will determine if these clouds make it onshore or stay just offshore over the gulf. Either way, these clouds will only be an issue for the aviation community. The new airmass will be noticeable by dawn... Especially along and north of the i-4 corridor. Low temps reach the lower 60s from st pete to sarasota and fort myers, but decrease steadily further inland and northward. It is not out of the question that spots up toward chiefland drop briefly into the upper 40s. Wednesday... The advertised fall-like airmass will have arrived. Still may be seeing some sct-bkn stratocu along the immediate coast, but otherwise plenty of sunshine will be in the forecast. Will be almost unknown from the surface, but appears a strong shortwave vorticity lobe will be swinging across our skies during the second half of the day. Luckily there is simply no moisture for this feature to work. High temperatures are going to struggle into the middle 70s... And even lower 70s up toward citrus levy counties. |
Dewpoints are forecast to reach very comfortable readings in the 40s. The dry airmass fully in place will allow for the coldest night of the week Wednesday night. Hard to believe but widespread 40s and 50s appears likely. We have not seen an airmass like this in many months. Enjoy it if you can. Mid long term The forecast period begins with cool, dry fall air in place over the peninsula as high pressure settles in behind a cold front. Skies will be clear overnight Wed into Thursday morning allowing temps to drop into the 40s and 50s across west-central and SW florida. This will be some of the coolest air we've seen in over 6 months. Wednesday night Thursday morning looks to be the coolest night with temps Thursday afternoon topping out in the mid 70s. Temps begin to moderate Friday and into Saturday as high pressure will shift to the east with a moderating NE to E flow setting up over the peninsula. As we get into the weekend, models continue to show the potential for an area of low pressure to develop in the western caribbean in association with a central american gyre currently over the region. These features are notoriously difficult for global models to forecast but nevertheless the latest tropical weather outlook from nhc gives this area a 50% chance of tropical development over the next 5 days. Model trends over the last few days has been for a significant moisture increase over the area for the weekend associated with this feature. Given the trends, have increased pops quite a bit from the previous forecast for Saturday and Sunday. While this feature moves north, deep upper-level troughing and another cold front will swoop down across the central CONUS and move towards the fl peninsula. This will quickly lift the moisture associated with the aforementioned low, whether tropical in nature or not, across the region before moving it out into the western atlantic by Sun afternoon. Again, these features are tough for global models to forecast so this is a very low confidence forecast for Saturday and Sunday. Later Sunday, the front will push through the area and bring another round of below normal temps to the region. Aviation (24 08z through 25 06z) cold front is very slowly moving southward down the florida peninsula early this morning. Widespread showers storms from around kfmy krsw should become more scattered approaching dawn, but will remain in the forecast south of the front. Ktpa and nearby terminals may see a brief shower through 12-14z, but thereafter,VFR conditions and improving sky conditions should progress through the day. Terminals around kfmy could see a few showers at any time during the day Tuesday, however rain chances decrease with time after late afternoon. All terminals begin a long duration of prevailing vfr conditions behind a secondary cold front Tuesday evening night. Marine A cold front will continue to sag south through the eastern gulf of mexico today... Shifting winds northerly in its wake. These winds will occasionaly approach 15 knots. A secondary and stronger cold front will quickly move through the forecast waters tonight. Winds increase rapidly to advisory levels behind this front and continue strong into the day Wednesday. Winds will then subside into Thursday as high pressure builds over the region. Fire weather A cold front will continue to slowly sag south across the region today... Keeping chances for showers generally south of the i-4 corridor. A secondary cold front will arrive tonight and clear out the entire region. A cooler and much drier airmass will arrive for Wednesday... Lingering through Thursday. Relative humidity values both Wednesday and Thursday afternoons are expected to approach or fall briefly below 35 percent. However, due to low erc values, and generally light winds, no red flag conditions are anticipated. Although fair weather will continue... Low level moisture and relative humidity values will begin to increase once again on Friday. Fog potential... No significant areas of fog or lower visibility are expected over the next several days. Preliminary point temps pops Tpa 81 61 74 54 20 0 0 0 fmy 84 64 76 54 60 20 0 0 gif 82 58 73 51 30 0 0 0 srq 79 63 74 54 20 10 0 0 bkv 80 55 73 44 10 0 0 0 spg 81 63 74 59 20 0 0 0 Tbw watches warnings advisories Fl... None. Gulf waters... None. Synopsis short term aviation marine fire wx... Mroczka mid term long term decision support... Mckaughan |
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 | 133 min | NW 8 G 14 | 76°F | 1013.2 hPa | |||
| FHPF1 - Fred Howard Park, FL | 27 mi | 73 min | NW 13 G 15 | 76°F | 1013.7 hPa | |||
| CWBF1 - 8726724 - Clearwater Beach, FL | 39 mi | 49 min | NW 14 G 17 | 76°F | 79°F | 1013.3 hPa | ||
| TSHF1 - 8726667 - East Bay Causeway, FL | 43 mi | 55 min | S 5.1 G 7 | |||||
| TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL | 43 mi | 61 min | WNW 5.1 G 8.9 | |||||
| MCYF1 | 44 mi | 49 min | 81°F | |||||
| CDRF1 - Cedar Key, FL | 46 mi | 67 min | N 8 G 9.9 | 64°F | 1014 hPa (+0.5) | 57°F | ||
| OPTF1 - 8726607 - Old Port Tampa, FL | 47 mi | 49 min | NNW 15 G 18 | 76°F | 79°F | 1012.9 hPa |
Wind History for Clearwater Beach, FL
(wind in knots) EDIT (on/off) Help| 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 | 6 AM | |
| Last 24hr | SE G8 | SE G10 | SE | SE G11 | S G19 | S G20 | S G15 | S G20 | S G10 | SE G7 | N G4 | S G19 | S G23 | SE G15 | SE G10 | E | SE | SE G7 | S | S | S | SW | NW | NW G18 |
| 1 day ago | E G14 | E G14 | E G14 | E G15 | E G15 | E G12 | E G15 | SE G18 | SE G13 | SE | SW | SW | S | SW | E | SE G9 | SE G9 | SE G10 | SE G12 | SE | SE G9 | SE G12 | SE G13 | SE |
| 2 days ago | NE G12 | NE | E G14 | E G18 | E G18 | E G15 | E G15 | E G16 | E G14 | E G13 | E G17 | E G15 | E G11 | E G16 | E G18 | E G13 | E G14 | E G11 | E G10 | NE G8 | NE G8 | E | NE G11 | E G10 |
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 | 14 min | NW 6 | 10.00 mi | Partly Cloudy | 71°F | 68°F | 90% | 1013.5 hPa |
| Crystal River Airport, FL | 24 mi | 12 min | NNW 3 | 10.00 mi | Overcast | 66°F | 62°F | 88% | 1013.9 hPa |
Wind History from BKV (wind in knots)
| 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 | 6 AM | 7 AM | |
| Last 24hr | SE | SE | SE | SE | S | S G18 | SW | SW | S | E | SW | SW G20 | S | S | Calm | SE | S | S | Calm | Calm | Calm | NW | NW | NW |
| 1 day ago | NE | E | E | SE G16 | E G17 | E | SE | SE G15 | SE | SE | SE | E | SE | E | E | E | E | SE | SE | SE | SE | SE | SE | SE |
| 2 days ago | NE | NE | E | E G18 | E G17 | E G17 | E G20 | E G19 | E | E | E | E | NE | NE | NE | NE | E | NE | E | E | NE | NE | NE | NE |
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 Tue -- 04:11 AM EDT 3.20 feet High Tide Tue -- 07:37 AM EDT Sunrise Tue -- 11:43 AM EDT Moonrise Tue -- 11:51 AM EDT 0.11 feet Low Tide Tue -- 05:44 PM EDT 2.61 feet High Tide Tue -- 06:51 PM EDT Sunset Tue -- 10:35 PM EDT Moonset Tue -- 11:51 PM EDT 1.19 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 |
| 1.2 | 1.7 | 2.4 | 2.9 | 3.2 | 3.1 | 2.8 | 2.2 | 1.6 | 1 | 0.5 | 0.2 | 0.1 | 0.4 | 0.9 | 1.6 | 2.1 | 2.5 | 2.6 | 2.5 | 2.2 | 1.8 | 1.5 | 1.3 |
Tide / Current Tables for Aripeka, Hammock Creek, Florida
EDIT (on/off) Help One Week of Data| Aripeka Click for Map Tue -- 03:37 AM EDT 3.09 feet High Tide Tue -- 07:37 AM EDT Sunrise Tue -- 11:38 AM EDT 0.09 feet Low Tide Tue -- 11:43 AM EDT Moonrise Tue -- 05:10 PM EDT 2.51 feet High Tide Tue -- 06:52 PM EDT Sunset Tue -- 10:36 PM EDT Moonset Tue -- 11:38 PM EDT 0.96 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 |
| 1.1 | 1.8 | 2.5 | 3 | 3.1 | 2.9 | 2.4 | 1.9 | 1.3 | 0.8 | 0.4 | 0.1 | 0.1 | 0.5 | 1.1 | 1.8 | 2.3 | 2.5 | 2.4 | 2.2 | 1.9 | 1.5 | 1.2 | 1 |
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 (7,2,3,4)
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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. |