Marine Weather and Tides
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 7:01AM||Sunset 8:05PM||Friday August 18, 2017 12:20 PM EDT (16:20 UTC)||Moonrise 2:41AM||Moonset 4:37PM||Illumination 14%|
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|GMZ853 Coastal Waters From Englewood To Tarpon Springs Fl Out 20 Nm- 957 Am Edt Fri Aug 18 2017 |
This afternoon..Northeast winds around 5 knots then becoming northwest early in the afternoon, then increasing to around 10 knots late in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop. Wind and seas higher near isolated Thunderstorms.
Tonight..Northwest winds around 10 knots then becoming northeast late in the evening, then becoming southeast around 5 knots after midnight. Seas 2 feet or less. Bay and inland waters a light chop. Isolated Thunderstorms in the evening.
Saturday..East winds around 5 knots then becoming south early in the afternoon, then becoming west late in the afternoon. Seas 2 feet or less. Bay and inland waters smooth.
Saturday night..Northwest winds around 10 knots then becoming east after midnight. Seas 2 feet or less. Bay and inland waters a light chop. Isolated Thunderstorms.
Sunday..Southeast winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. Scattered Thunderstorms.
Sunday night..East winds 5 to 10 knots increasing to around 15 knots after midnight. Seas 2 feet. Bay and inland waters a moderate chop. Scattered Thunderstorms.
Monday..East winds around 15 knots diminishing to 5 to 10 knots in the afternoon. Seas 2 feet. Bay and inland waters a moderate chop. Scattered Thunderstorms.
Monday night..East winds around 15 knots. Seas 2 feet. Bay and inland waters a moderate chop. Scattered Thunderstorms in the evening, then isolated Thunderstorms after midnight.
Tuesday..East winds around 15 knots diminishing to 5 to 10 knots in the afternoon. Seas 2 to 3 feet. Bay and inland waters a moderate chop. Scattered Thunderstorms.
|GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 957 Am Edt Fri Aug 18 2017 |
Synopsis..Weak bermuda high pressure will remain across the region through the weekend with light winds and slight seas. Winds are expected to increase with easterly surges early next week as the pressure gradient tightens between low pressure to the south and high pressure to the north. Otherwise, the primary marine concern will be daily scattered Thunderstorms which may produce dangerous lightning, locally stronger winds and choppy seas.
7 Day Forecast for Marine Location Near Anna Maria, FLHourly EDIT Help
Area Discussion for - Tampa Bay, FL  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus62 ktbw 181317|
area forecast discussion
national weather service tampa bay ruskin fl
917 am edt Fri aug 18 2017
A few strong storms possible this afternoon...
A large upper level low located over north-central cuba
with a trough axis extending north into the florida
peninsula this morning will continue to move slowly to the
west the remainder of today. Water vapor imagery as well as
12z mfl RAOB data shows drier and cooler mid level air
associated with the upper low advecting into southern
portions of the peninsula early this morning where pw's at
mfl has dropped to 1.46 inches with 500mb temperatures now
at -9c. This drier and cooler mid level air may lead to some
some strong convection developing along the sea breeze
across southwest florida during the afternoon hours with
strong downburst winds and small hail being the main hazards
along with frequent lightning strikes and heavy rain.
Further to the north across central and northern portions of
the forecast area deep layered moisture (pw's 2+ inches and
milder mid level temperatures will again support scattered
to numerous showers and storms developing along the sea
breeze and outflow boundaries during the afternoon with a
very weak steering flow through 700mb again supporting slow
and erratic storm motion with some very heavy rainfall
amounts possible in some locations along with frequent
lightning strikes and some gusty winds. Given the cooler
drier air aloft will add gusty winds and hail wording into
the forecast for southwest florida for the afternoon, and
will also add heavy rain and gusty winds wording for central
and northern zones given the high pw's and slow and erratic|
storm motion. Other than these minor tweaks no other changes
are planned at this time. Zone update will be out by 10 am.
Brief MVFR CIGS vsbys may impact the terminal sites after
16z as scattered showers and thunderstorms develop along
the bay and sea breeze boundaries and have included tempo
groups to cover this. Outside of the convectionVFR will
prevail. Light and variable winds early this morning will
become west to northwest at 7 to 9 knots after 16z as the
sea breeze develops and moves inland with gusts up to 30
knots possible in the vicinity of tsra. Light to calm winds
will return to all terminals after 02z tonight.
High pressure from the atlantic extending west across the
central florida peninsula and into the eastern gulf will
maintain light winds and slight seas over the gulf waters
the remainder of today with a weak pressure pattern
supporting an onshore sea breeze component developing along
the coast during the afternoon. Wind and seas will be higher
in the vicinity of thunderstorms, otherwise no headlines
are expected. Ongoing forecast is on track with no changes
expected in the next forecast issuance around 10 am this
Tbw watches warnings advisories
Gulf waters... None.
Update aviation marine... 57 mcmichael
upper air... 05 carlisle flannery
decision support... 74 wynn
Weather Reporting StationsEDIT (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||12 mi||50 min||86°F||91°F||1016.8 hPa|
|MTBF1||12 mi||50 min||Calm G 1.9||86°F||1017.7 hPa|
|42098||12 mi||50 min||90°F||1 ft|
|CLBF1||15 mi||86 min||SW 4.1 G 6||87°F||1016.3 hPa|
|SAPF1 - 8726520 - St. Petersburg, FL||18 mi||50 min||SSE 2.9 G 5.1||87°F||89°F||1017.8 hPa|
|OPTF1 - 8726607 - Old Port Tampa, FL||25 mi||50 min||S 5.1 G 6||85°F||88°F||1017.4 hPa|
|42013 - C10 - Navy-2||26 mi||50 min||E 3.9 G 5.8||89°F|
|CWBF1 - 8726724 - Clearwater Beach, FL||32 mi||50 min||NNE 8.9 G 14||83°F||89°F||1017.8 hPa|
|MCYF1||32 mi||50 min||91°F|
|TSHF1 - 8726667 - East Bay Causeway, FL||33 mi||50 min||S 2.9 G 5.1|
|TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL||33 mi||56 min||S 5.1 G 6|
|VENF1 - Venice, FL||34 mi||80 min||SW 1.9 G 1.9||86°F||89°F||1017.7 hPa (+1.1)||76°F|
|FHPF1 - Fred Howard Park, FL||44 mi||86 min||SW 2.9 G 6||85°F||1017.9 hPa|
Wind History for C-Cut, FL(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Sarasota / Bradenton, Sarasota-Bradenton International Airport, FL||13 mi||27 min||SSE 4||10.00 mi||Fair||88°F||73°F||61%||1016.9 hPa|
|Albert Whitted Airport, FL||18 mi||27 min||S 7||10.00 mi||Fair||88°F||77°F||70%||1016.6 hPa|
Wind History from SRQ (wind in knots)
|1 day ago||W||W||NE||NW||W||N||N||N||Calm||E||SE||SE||E||SE||SE||SE||E||Calm||E||Calm||SE||NE||Calm|
|2 days ago||W||W||W||W||W||W||W||NW||NW||N||NW||NW||Calm||Calm||Calm||Calm||E||Calm||Calm||E||E||Calm||NW||NW |
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Tide / Current data from XTide NOT FOR NAVIGATION|
EDIT (on/off)  Help One Week of Data
|Tampa Bay Entrance (Egmont Channel) |
Click for Map
Fri -- 02:45 AM EDT -0.00 knots Slack
Fri -- 03:27 AM EDT -0.06 knots Max Ebb
Fri -- 03:41 AM EDT Moonrise
Fri -- 04:13 AM EDT 0.00 knots Slack
Fri -- 07:03 AM EDT Sunrise
Fri -- 09:05 AM EDT 1.16 knots Max Flood
Fri -- 11:51 AM EDT -0.00 knots Slack
Fri -- 03:46 PM EDT -2.09 knots Max Ebb
Fri -- 05:37 PM EDT Moonset
Fri -- 08:05 PM EDT Sunset
Fri -- 08:07 PM EDT 0.00 knots Slack
Fri -- 11:13 PM EDT 1.66 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Southeast EDIT
Wind Forecast for Tampa Bay, FL (12,3,4,5)(on/off)  Help
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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 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.