Thursday, January21, 2021
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Marine Weather and Tides
Longboat Key, FL

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:19AMSunset 6:04PM Thursday January 21, 2021 11:03 PM EST (04:03 UTC) Moonrise 12:39PMMoonset 1:05AM Illumination 63% Phase: Waxing Gibbous; Moon at 9 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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GMZ853 Coastal Waters From Englewood To Tarpon Springs Fl Out 20 Nm- 837 Pm Est Thu Jan 21 2021
Rest of tonight..Southwest winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop.
Friday..Southwest winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. A slight chance of showers late in the afternoon.
Friday night..South winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. A slight chance of showers after midnight.
Saturday..Southwest winds around 5 knots then becoming north late in the afternoon. Seas 2 feet. Bay and inland waters smooth. A slight chance of showers in the afternoon.
Saturday night..East winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop.
Sunday..East winds around 10 knots then becoming southwest around 5 knots late in the afternoon. Seas 2 feet. Bay and inland waters a light chop.
Sunday night..North winds around 5 knots then becoming southeast around 10 knots in the late evening and overnight. Seas 2 feet or less. Bay and inland waters a light chop.
Monday..South winds around 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop.
Monday night..South winds around 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop.
Tuesday..South 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- 837 Pm Est Thu Jan 21 2021
Synopsis..High pressure over the region today will shift eastward as a weak cold front moves south through Friday and Saturday. Only a few showers will be possible with this boundary, otherwise no marine concerns as ridging continues across the area.


7 Day Forecast for Marine Location Near Longboat Key, FL
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location: 27.38, -82.63     debug


Area Discussion for - Tampa Bay, FL
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FXUS62 KTBW 220135 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 835 PM EST Thu Jan 21 2021

DISCUSSION. A cold front is stalled across the northern FL border. This will settle southward through tomorrow, with the moisture allowing for some patchy to areas of fog overnight, and a few showers possible mainly across the northern half of the area Friday and Saturday. High pressure then builds from the NE then E through Monday, before the next cold front settles into the area and stalls through mid-week. Current forecast is on track with lows falling into the 50s. No changes planned.

AVIATION. VFR conditions expected through the early evening. Some patchy fog is then expected to bring some MVFR to possibly IFR conditions mainly 09-14z. VFR conditions then returns as the fog burns off, with light winds overnight, increasing from the SW late Friday morning through the afternoon.

MARINE. Winds and seas remain AOB 15 knots from the SW into Saturday. Winds then gradually shift around to the E by early Sunday as high pressure builds from the NE. Winds then continue to shift to the S through early next week as the high center shifts south over the Atlantic. Some low rain chances across the northern waters over the next couple of days, but otherwise no headlines expected through the period.

Preliminary Point Temps/PoPs. TPA 58 71 62 73 / 0 20 10 20 FMY 55 74 60 77 / 0 10 10 10 GIF 54 74 60 73 / 0 10 10 20 SRQ 55 72 62 75 / 0 10 10 20 BKV 51 72 58 72 / 0 30 20 20 SPG 60 71 63 71 / 0 10 10 20

TBW WATCHES/WARNINGS/ADVISORIES. FL . None. Gulf waters . None.



UPDATE/AVIATION/MARINE . 24/Hubbard UPPER AIR/DECISION SUPPORT . 27/Shiveley


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PMAF1 18 mi70 min 60°F 62°F1018.2 hPa
MTBF1 20 mi70 min SSW 4.1 G 5.1 61°F 1018 hPa55°F
42098 22 mi68 min 62°F1 ft
VENF1 - Venice, FL 23 mi64 min SSE 2.9 G 2.9 62°F 63°F1018.2 hPa (+0.0)59°F
CLBF1 25 mi130 min S 1 G 1.9 62°F 1017.8 hPa
SAPF1 - 8726520 - St. Petersburg, FL 26 mi70 min SW 1.9 G 2.9 59°F 62°F1018.3 hPa
GCTF1 28 mi70 min 62°F 55°F
OPTF1 - 8726607 - Old Port Tampa, FL 33 mi70 min S 4.1 G 5.1 61°F 64°F1018.3 hPa
EBEF1 39 mi70 min 62°F 64°F1017.9 hPa
SKCF1 39 mi70 min S 7.8 G 9.7
TSHF1 - 8726667 - East Bay Causeway, FL 39 mi76 min SSE 4.1 G 5.1
CWBF1 - 8726724 - Clearwater Beach, FL 43 mi70 min S 7 G 8.9 62°F 65°F1018.1 hPa

Wind History for C-Cut, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sarasota / Bradenton, Sarasota-Bradenton International Airport, FL4 mi71 minN 010.00 miFair56°F50°F81%1017.7 hPa
Venice Municipal Airport, FL24 mi69 minN 08.00 miFair55°F54°F94%1018.6 hPa

Link to 5 minute data for KSRQ

Wind History from SRQ (wind in knots)
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Last 24hrN4CalmCalmCalmCalmCalmSE3CalmCalmCalmCalmNW3W5W7W7SW7W7W5CalmCalmS3SE3CalmCalm
1 day agoNE6NE3CalmCalmNE4NE3CalmCalmNE3E3NE3NE4N4W9W11W10W11NW9NW8N7NW4N4N4Calm
2 days agoN4N5N6E5NE5NE5NE6NE4NE6NE8E7E8E7E5W5W10NW7NW7N5N4CalmCalmCalmNE4

Tide / Current Tables for Sarasota, Sarasota Bay, Florida (2)
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Sarasota
Click for Map
Thu -- 01:05 AM EST     Moonset
Thu -- 01:33 AM EST     0.18 feet Low Tide
Thu -- 07:00 AM EST     0.84 feet High Tide
Thu -- 07:20 AM EST     Sunrise
Thu -- 12:00 PM EST     0.65 feet Low Tide
Thu -- 12:38 PM EST     Moonrise
Thu -- 06:03 PM EST     Sunset
Thu -- 06:04 PM EST     1.54 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.20.20.30.50.70.80.80.80.80.70.70.70.70.81.11.31.51.51.51.41.20.90.6

Tide / Current Tables for Tampa Bay Entrance (Egmont Channel), Florida Current
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Tampa Bay Entrance (Egmont Channel)
Click for Map
Thu -- 01:06 AM EST     Moonset
Thu -- 03:22 AM EST     0.00 knots Slack
Thu -- 06:20 AM EST     0.60 knots Max Flood
Thu -- 07:21 AM EST     Sunrise
Thu -- 10:16 AM EST     -0.00 knots Slack
Thu -- 11:35 AM EST     -0.11 knots Max Ebb
Thu -- 12:39 PM EST     Moonrise
Thu -- 12:49 PM EST     0.00 knots Slack
Thu -- 04:57 PM EST     0.87 knots Max Flood
Thu -- 06:03 PM EST     Sunset
Thu -- 08:15 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1-0.8-0.5-0.10.20.50.60.60.40.20-0.1-0.100.30.60.80.90.80.50.1-0.3-0.7-1

Weather Map
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wmap_A
GEOS Local Image of    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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station



Gulf Stream Current



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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 numerous 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.