Thursday, March30, 2017

Marine Weather and Tides
Tierra Verde, FL

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:20AMSunset 7:48PM Thursday March 30, 2017 4:29 PM EDT (20:29 UTC) Moonrise 8:24AMMoonset 9:46PM Illumination 12% Phase: Waxing Crescent; Moon at 3 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
    EDIT      (on/off)   Help
GMZ853 Coastal Waters From Englewood To Tarpon Springs Fl Out 20 Nm- 259 Pm Edt Thu Mar 30 2017
Tonight..South winds 5 to 10 knots increasing to around 15 knots toward morning. Seas 2 to 3 feet. Bay and inland waters a moderate chop.
Friday..South winds around 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Friday night..Southwest winds around 10 knots then becoming northwest around 5 knots after midnight. Seas 2 to 3 feet. Bay and inland waters a light chop. A slight chance of Thunderstorms in the evening.
Saturday..North winds around 5 knots then becoming northeast late in the morning, then becoming northwest early in the afternoon then becoming west around 10 knots late in the afternoon. Seas 2 feet. Bay and inland waters a light chop.
Saturday night..Northwest winds around 10 knots then becoming north around 5 knots after midnight, then becoming northeast around 10 knots toward morning. Seas 2 feet. Bay and inland waters a light chop.
Sunday..Northeast winds around 10 knots then becoming south around 5 knots in the afternoon. Seas 2 feet. Bay and inland waters a light chop.
Sunday night..South winds around 5 knots then becoming southeast 5 to 10 knots after midnight, then increasing to around 15 knots toward morning. Seas 2 feet or less. Bay and inland waters a moderate chop.
Monday..Southeast winds 10 to 15 knots then becoming south around 20 knots in the late morning and afternoon. Seas 3 to 5 feet. Bay and inland waters choppy. A slight chance of Thunderstorms.
Monday night..South winds around 20 knots then becoming southwest 10 to 15 knots in the late evening and overnight. Seas 3 to 5 feet. Bay and inland waters choppy. A chance of showers and a slight chance of Thunderstorms.
Tuesday..West winds around 15 knots diminishing to 5 to 10 knots in the afternoon. Seas 3 to 5 feet. Bay and inland waters a moderate chop. A slight chance of Thunderstorms in the morning. A chance of showers.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 259 Pm Edt Thu Mar 30 2017
Synopsis..A cold front will approach from the west tonight then move south through the eastern gulf waters during Friday and Friday night. High pressure will rebuild in over the region during the upcoming weekend. Another cold front will approach and move through the gulf water late Monday into Tuesday. Winds and seas will increase over the central and northern offshore waters tonight ahead of the front and mariners should exercise caution. Lighter winds and lower seas will return during the upcoming weekend.

7 Day Forecast for Marine Location Near Tierra Verde, FL
   Hourly   EDIT   Help
location: 27.61, -82.72     debug

Area Discussion for - Tampa Bay, FL
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 ktbw 301832
area forecast discussion
national weather service tampa bay ruskin fl
232 pm edt Thu mar 30 2017

Short term (tonight - Friday)
A progressive split flow upper air pattern will continue across the
conus during the short term period. High pressure surface and aloft
will continue to shift eastward over the atlantic tonight as a
closed low and attendant surface low over the mid mississippi valley
moves east-northeast toward the ohio valley/northern appalachians
region through Friday. As the aforementioned storm system moves east
a trailing cold front from it will move east through the florida
panhandle later tonight before it begins to slow down as it moves
into the northern florida peninsula early on Friday, and then into
the central forecast area Friday night as the main upper support
pulls away well to the north and the front becomes parallel to the
upper level flow. A slow increase in moisture combined with enough
instability and lift ahead of the front should support increasing
chances for some much needed rain with some scattered showers and a
few storms (pops 30 to 40 percent) possible over northern portions
of the forecast area later tonight as the front approaches, and then
across the remainder of the forecast area on Friday as the front
sinks south into the region during the day with breezy, warm, and
muggy conditions expected.

Temperatures tonight and Friday will remain above normal with lows
tonight in the 60s area-wide, with daytime highs on Friday again
reaching the mid 80s over inland locations, except cooler readings
along the immediate coast due to a breezy onshore flow.

Long term (Friday night - Thursday)
A closed upper low sits over the four corners region and associated
trouging extends south into the eastern pacific. Upper ridging
extends from louisiana northward through the dakotas. Another closed
low sits over northern virginia, with a more zonal pattern over
florida through Saturday morning when ridging moves east over the
area. This ridging will move east through the weekend into the
beginning of next week as another closed low and deep troughing
approaches the southeast u.S. This troughing will lend support to
the next weather system that is expected to move through the florida
peninsula on Monday and Tuesday next week.

On the surface, an area of low pressure sits over the eastern great
lakes region and extends a cold front south along the
eastern seaboard through southeast florida. Weak high
pressure moves into the gulf of mexico in the wake of this
front and will bring sunny skies and unseasonably warm
temperatures to the area through the weekend. The next
weather system will develop over mississippi by early
Monday. This low moves east-northeastward and will trail a
cold front through the gulf of mexico toward western florida
by Monday evening. This will bring a 30-40 percent chance
of showers and storms to the area beginning Monday afternoon
and continuing through Tuesday afternoon. As this front
moves over southern florida, high pressure builds back into
the area bringing clearing conditions through Wednesday
night next week.

Vfr will prevail at all terminal sites during the next 24 hours. An
approaching cold front will bring increasing chances for shra/tsra
to the terminals after 13z on Friday and have added vcsh to all
sites to account for this for now. A slow increase in mid and high
level clouds can be expected tonight into Friday, with lower CIGS in
the 050-070 range expected after 15z. South to southwest winds in
the 10 to 15 knot range this afternoon will diminish to 6 to 8 knots
after 02z tonight, then increase into the 15 to 20 knot range with
some gusts up to 25 knots possible after 14z on Friday.

High pressure moving east over the atlantic combined with a cold
front approaching from the west will support an increasing south
to southwest wind flow over the gulf waters tonight through Friday
with a period of cautionary headlines likely across the offshore
waters by later tonight through Friday a the cold front approaches
and sinks south into the eastern gulf waters through the period.

Lighter winds and lower seas will return to the waters Friday night
into the upcoming weekend as high pressure re-builds in over the
region with an onshore sea breeze component again developing along
the coast each afternoon. On Monday winds may again increase toward
cautionary or small craft levels as they become southeast to south
as yet another cold front approaches from the west with this front
then sinking south through the waters during Monday night and
Tuesday with winds shifting to the southwest and west.

Fire weather
Increasing 20 foot winds and transport winds will support elevated
dispersion indices across the region on Friday. Humidity values will
remain above critical levels on Friday as moisture and rain chances
increase across the region. Drier air will filter in during the
upcoming weekend which will support a few hours of critically low
humidity values below 35 percent over interior locations each
afternoon, however light winds and erc values below 37 should
preclude red flag conditions.

Preliminary point temps/pops
Tpa 68 79 66 82 / 10 30 10 10
fmy 65 82 67 86 / 10 30 10 0
gif 64 85 63 87 / 10 30 10 0
srq 67 77 64 80 / 10 30 10 0
bkv 64 83 57 85 / 10 30 10 0
spg 68 79 68 82 / 10 40 10 10

Tbw watches/warnings/advisories
Fl... None.

Gulf waters... None.

Short term/aviation/marine/fire weather... 57/mcmichael
mid term/long term/decision support... 74/wynn

Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MTBF1 8 mi41 min WSW 15 G 16 74°F 1014.6 hPa67°F
PMAF1 9 mi41 min 77°F 77°F1013.6 hPa
CLBF1 9 mi95 min SW 15 G 19 77°F 1014.5 hPa
42098 11 mi29 min 72°F2 ft
SAPF1 - 8726520 - St. Petersburg, FL 12 mi47 min SW 17 G 19 77°F 76°F1014 hPa
OPTF1 - 8726607 - Old Port Tampa, FL 19 mi41 min SSW 15 G 17 75°F 78°F1014.6 hPa
MCYF1 26 mi41 min 78°F
CWBF1 - 8726724 - Clearwater Beach, FL 26 mi41 min SSW 14 G 16 73°F 74°F1014.8 hPa
TSHF1 - 8726667 - East Bay Causeway, FL 27 mi41 min SW 13 G 17
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 27 mi47 min WSW 7 G 11
42013 - C10 - Navy-2 32 mi59 min SSE 7.8 G 9.7 69°F 72°F
FHPF1 - Fred Howard Park, FL 38 mi95 min SW 16 G 19 74°F 1014.9 hPa
VENF1 - Venice, FL 40 mi29 min SSW 11 G 12 75°F 75°F1014.1 hPa (-1.5)68°F

Wind History for C-Cut, FL
(wind in knots)    EDIT      (on/off)   Help
1 day
2 days

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St. Petersburg Whitted Airport, FL12 mi36 minWSW 12 G 2110.00 miFair77°F63°F62%1013.8 hPa
Sarasota / Bradenton, Sarasota-Bradenton International Airport, FL17 mi36 minSSW 15 G 2110.00 miFair79°F64°F62%1013.6 hPa
Macdill Air Force Base, Fl., FL20 mi31 minSSW 16 G 2210.00 miFair82°F67°F63%1014.5 hPa
St. Petersburg/Clearwater Airport, FL21 mi36 minSSW 1310.00 miFair82°F60°F47%1014.4 hPa

Wind History from SPG (wind in knots)
Last 24hrW14W11NW11NW8N5N4NW3N5N3NE4E4CalmS7S5S6S3S6S6S8SW9W9SW12SW13SW12
1 day agoW9W11W8NW6NW6N5N6N4E8E10E8N4NE4NE4E5SE4SE5S5E3E3E3E4W9SW11
2 days agoNE3NW73N4NW6N8N5NE5E11SE9SE8SE8SE8S7S4SE4SE5E4E3SE3S6S7SW8W11

Tide / Current Tables for Mullet Key Channel (Skyway), Florida
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Mullet Key Channel (Skyway)
Click for Map
Thu -- 02:36 AM EDT     1.56 feet High Tide
Thu -- 07:23 AM EDT     Sunrise
Thu -- 08:01 AM EDT     0.57 feet Low Tide
Thu -- 09:24 AM EDT     Moonrise
Thu -- 01:54 PM EDT     2.04 feet High Tide
Thu -- 07:47 PM EDT     Sunset
Thu -- 09:07 PM EDT     -0.24 feet Low Tide
Thu -- 10:45 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
Thu -- 02:04 AM EDT     1.71 knots Max Flood
Thu -- 05:21 AM EDT     -0.00 knots Slack
Thu -- 07:23 AM EDT     Sunrise
Thu -- 07:42 AM EDT     -0.94 knots Max Ebb
Thu -- 09:24 AM EDT     Moonrise
Thu -- 10:14 AM EDT     0.00 knots Slack
Thu -- 01:38 PM EDT     1.53 knots Max Flood
Thu -- 04:29 PM EDT     -0.00 knots Slack
Thu -- 07:47 PM EDT     Sunset
Thu -- 07:54 PM EDT     -2.11 knots Max Ebb
Thu -- 10:45 PM EDT     Moonset
Thu -- 11:46 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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 (16,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Tampa Bay Area, FL
   (on/off)   Help
weather_mapweather_map weather_map

Gulf Stream Current

Ad by Google

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 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 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.