Monday, November20, 2017 L-36.com


Marine Weather and Tides
Gulfport, FL

Version 3.4
What's New / NOTES
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 6:55AMSunset 5:37PM Monday November 20, 2017 4:27 AM EST (09:27 UTC) Moonrise 8:37AMMoonset 7:33PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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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GMZ830 Tampa Bay Waters- 331 Am Est Mon Nov 20 2017
.small craft advisory in effect until 7 am est this morning...
Today..Northeast winds around 20 knots early this morning becoming east and diminishing to 10 to 15 knots in the afternoon. Bay and inland waters choppy this morning, becoming a moderate chop in the afternoon.
Tonight..East winds 10 to 15 knots diminishing to 5 to 10 knots after midnight. Bay and inland waters a moderate chop.
Tuesday..East winds around 10 knots. Bay and inland waters a light chop. Showers likely and a slight chance of Thunderstorms.
Tuesday night..Northeast winds around 5 knots. Bay and inland waters smooth. A slight chance of Thunderstorms.
Wednesday..Northeast winds around 5 knots then becoming north late in the afternoon. Bay and inland waters smooth. A chance of showers and a slight chance of Thunderstorms in the afternoon.
Wednesday night..Northeast winds around 10 knots. Bay and inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Thursday..East winds around 5 knots then becoming northwest late in the afternoon. Bay and inland waters smooth. Showers likely and a slight chance of Thunderstorms.
Thursday night..Northeast winds around 10 knots. Bay and inland waters a light chop. A chance of showers.
Friday..North winds around 10 knots. Bay and inland waters a light chop. A slight chance of showers.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 331 Am Est Mon Nov 20 2017
Synopsis..A cold front across the southern florida peninsula early this morning will move into and stall out across the florida straits later this afternoon and tonight as surface high pressure over the southeastern states slides east northeast toward the mid atlantic coast. Strong and gusty north winds over the gulf waters early this morning will diminish some by later this morning and into the afternoon as the flow veers into the northeast and east. Tonight into Tuesday the high will shift east into the atlantic as an area of low pressure develops over the gulf. As this low develops the stalled frontal boundary across the florida straits will lift back to the north as a warm front on Tuesday. Increasing moisture combined with the warm front and developing low pressure over the gulf will bring increasing rain chances and isolated Thunderstorms to the gulf waters on Tuesday and continuing through the end of the week as this storm system continues to affect the region.

7 Day Forecast for Marine Location Near Gulfport, FL
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location: 27.74, -82.69     debug


Area Discussion for - Tampa Bay, FL
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Fxus62 ktbw 200816
afdtbw
area forecast discussion
national weather service tampa bay ruskin fl
316 am est Mon nov 20 2017

Increasing rain chances Tuesday through thanksgiving day...

Short term (today - Tuesday)
A cold front across the southern peninsula early this
morning will stall out across the florida straits by later
this afternoon and early tonight as surface high pressure
over the southeastern states drifts east-northeast toward
the mid atlantic coast. Cooler and drier air will continue
to advect into the region the remainder of the morning on a
breezy northerly wind flow with temperatures bottoming out
in the mid to upper 40s across the nature coast, lower to
mid 50s central interior, and mid to upper 50s across
southwest florida toward sunrise. Dry stable conditions
associated with the high to the north will initially support
sunny skies through the late morning, but as the flow
quickly veers into the east-northeast as the high moves east
expect to see a slow increase in clouds from east to west
during the afternoon as low level moisture increases across
the region. After a cool start temperatures will rebound
quickly back into the lower to mid 70s north, and mid to
upper 70s central and south during the afternoon.

Tonight the surface high along the mid atlantic coast will
slide east into the atlantic as a series of vort maxes within
the amplifying upper level trough over the gulf approach and
slide east across the region during the day on Tuesday. As
the high moves further to the east a developing southeast to
southerly wind flow will help to draw the stalled frontal
boundary to the south back to the north as a warm front on
Tuesday. Increasing low level moisture combined with lift
along the warm front and a possible weak surface low
reflection developing along the front over the northeast
gulf, and additional dynamic support aloft will support
scattered to numerous showers and isolated thunderstorms
(pops 60 to 70 percent) developing across the region during
the day with some locally heavy rain possible in some
locations as all of these features affect the region.

Temperatures tonight into Tuesday will modify back to near
seasonal levels as cloud cover and rain chances increase
with lows tonight in the mid to upper 50s north, and lower
to mid 60s central and south, with highs on Tuesday reaching
the lower to mid 70s north into central zones, and mid to
upper 70s south.

Long term (Tuesday night through Sunday)
The dominant weather feature this week will be a persistent
mid level shortwave trough that will dig into the gulf of
mexico Tuesday night and Wednesday and gradually shift east
through the florida peninsula through next weekend. At the
surface, this shortwave will fuel a pattern of unsettled
weather, as a series of surface lows lift northeast through
the forecast area on the tail end of a warm front Tuesday
night through late in the week. This will result in a rather
wet pattern through Friday, with daily chances for showers
and a few thunderstorms. In general, the GFS is showing a
stronger mid level shortwave, resulting in higher rain
chances than the ECMWF throughout the week, though otherwise
the long range models are in good agreement with the
overall pattern of daily rain chances.

By Friday afternoon and into the weekend, surface ridging
will be building into the central gulf and across northern
florida, allowing a drier and slightly cooler air mass to
filter into the forecast area. This will translate to a
rather pleasant weekend, with generally rain free conditions
Saturday and Sunday under mostly sunny skies. High
temperatures are expected to run in the low to mid 70s,
with cool mornings, and low humidity.

Aviation
Lingering ifr CIGS impacting kfmy and krsw should move to
the south by 08z withVFR returning.VFR with clear skies
is expected at all terminal sites through 20z as drier air
filters into the region in the wake of a cold front. After
20z sct040-050 is expected with bkn040-050 CIGS developing
at kpgd, kfmy, and krsw after 21z with these CIGS then
spreading north to the remainder of the terminals after 01z
tonight as moisture rapidly increases across the region.

North winds in the 10 to 12 knot range with a few higher
gusts this morning will become northeast to east at 8 to 10
knots after 18z which will continue through the end of the
forecast period.

Marine
Strong and gusty north winds and elevated seas in the wake
of the cold front will support hazardous boating conditions
over the gulf waters through early this morning with small
craft advisory headlines remaining in effect for all of the
gulf waters including the tampa bay waters until 7 am est
this morning. Winds and seas should diminish and subside
some but likely remain in the cautionary range through the
remainder of the day especially over the offshore waters as
the flow quickly veers into the northeast and east as high
pressure to the north slides east-northeast toward the mid
atlantic coast. Tonight through the remainder of the week an
area of low pressure is expected to develop over the
eastern gulf of mexico, with this low tracking east
northeast across the peninsula during Wednesday through
Friday. Although winds and seas are not expected to
significantly increase with this low rain chances will with
scattered to numerous showers and isolated storms expected
Tuesday through Friday as this storm system affects the
region.

Fire weather
Drier air will continue to advect into the region early this
morning in the wake of a cold front, but as the flow
quickly veers into the northeast and east by late morning
and into the afternoon an increase in atlantic moisture is
expected which will continue tonight through the remainder
of the week along with increasing rain chances as a
developing storm system over the gulf affects the region.

Given the short lived nature of the dry air humidity values
should remain above critical levels today and through the
remainder of the week with no fire weather issues expected
at this time.

Preliminary point temps pops
Tpa 76 63 75 64 0 10 70 20
fmy 79 66 80 65 0 20 70 20
gif 75 62 76 63 0 10 70 30
srq 77 65 76 64 0 10 70 20
bkv 75 59 75 60 0 10 70 30
spg 75 65 74 64 0 10 70 20

Tbw watches warnings advisories
Fl... None.

Gulf waters... Small craft advisory until 7 am est this morning for
coastal waters from bonita beach to englewood fl out
20 nm-coastal waters from englewood to tarpon springs
fl out 20 nm-coastal waters from tarpon springs to
suwannee river fl out 20 nm-tampa bay waters-waters
from bonita beach to englewood fl out 20 to 60 nm-
waters from englewood to tarpon springs fl out 20 to
60 nm-waters from tarpon springs to suwannee river fl
out 20 to 60 nm.

Short term aviation marine fire weather... 57 mcmichael
mid term long term decision support... 18 fleming


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CLBF1 0 mi94 min NNE 4.1 G 8 57°F 1017.8 hPa
SAPF1 - 8726520 - St. Petersburg, FL 4 mi46 min NE 13 G 19 57°F 71°F1018.6 hPa
MTBF1 7 mi40 min NE 21 G 25 58°F 1018.5 hPa
PMAF1 10 mi40 min 57°F 66°F1017.5 hPa
OPTF1 - 8726607 - Old Port Tampa, FL 11 mi40 min NNE 11 G 15 54°F 71°F1018.7 hPa
42098 16 mi28 min 71°F5 ft
MCYF1 18 mi40 min 73°F
CWBF1 - 8726724 - Clearwater Beach, FL 18 mi40 min NE 13 G 18 56°F 69°F1019 hPa
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 19 mi58 min N 7 G 9.9
TSHF1 - 8726667 - East Bay Causeway, FL 19 mi52 min NNE 8.9 G 12
FHPF1 - Fred Howard Park, FL 29 mi94 min NE 12 G 16 56°F 1019.5 hPa
42013 - C10 - Navy-2 41 mi58 min NE 19 G 25 75°F
VENF1 - Venice, FL 48 mi28 min NNE 9.9 G 14 56°F 72°F1017.5 hPa (+0.0)46°F
ARPF1 - APK - Aripeka, FL 48 mi94 min ENE 4.1 G 6 51°F 1019.1 hPa

Wind History for St. Petersburg, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Albert Whitted Airport, FL4 mi35 minNE 1410.00 miFair58°F45°F62%1018.1 hPa
St. Petersburg/Clearwater Airport, FL12 mi35 minNNE 1210.00 miFair55°F42°F62%1018.8 hPa
Macdill Air Force Base, Fl., FL12 mi32 minNE 710.00 miFair50°F43°F78%1018.9 hPa
Tampa, Peter O Knight Airport, FL18 mi33 minNNE 910.00 mi52°F41°F67%1018.6 hPa
Tampa, Tampa International Airport, FL18 mi35 minN 910.00 miFair53°F39°F61%1018.9 hPa

Wind History from SPG (wind in knots)
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Last 24hrCalmW3W5CalmSW6W9W9W10
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1 day agoE5E5SE5E5SE4SE4SE3CalmSE4SE5NW5SW6W8W4W5W3W4W5W4W4W4W3W3W3
2 days agoNE9NE12NE10NE12NE13NE12NE10NE6E4E3NE8CalmNE4N7N8N8N8N6N6NE3E8SE8SE8E6

Tide / Current Tables for Gulfport, Boca Ciega Bay, Florida
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Gulfport
Click for Map
Mon -- 06:55 AM EST     Sunrise
Mon -- 08:04 AM EST     -0.21 feet Low Tide
Mon -- 08:36 AM EST     Moonrise
Mon -- 02:40 PM EST     1.46 feet High Tide
Mon -- 05:36 PM EST     Sunset
Mon -- 06:44 PM EST     1.22 feet Low Tide
Mon -- 07:32 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.32.221.61.10.60.2-0.1-0.2-0.10.20.611.31.41.51.41.31.21.21.31.61.92.2

Tide / Current Tables for Port Manatee, Tampa Bay, Florida Current
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Port Manatee
Click for Map
Mon -- 02:22 AM EST     -0.00 knots Slack
Mon -- 06:05 AM EST     -1.19 knots Max Ebb
Mon -- 06:55 AM EST     Sunrise
Mon -- 08:36 AM EST     Moonrise
Mon -- 10:00 AM EST     0.00 knots Slack
Mon -- 01:23 PM EST     0.94 knots Max Flood
Mon -- 05:24 PM EST     -0.00 knots Slack
Mon -- 05:36 PM EST     Sunset
Mon -- 06:48 PM EST     -0.17 knots Max Ebb
Mon -- 07:32 PM EST     Moonset
Mon -- 08:20 PM EST     0.00 knots Slack
Mon -- 11:54 PM EST     0.77 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.50.2-0.3-0.7-1.1-1.2-1.1-0.9-0.5-00.50.80.90.90.70.40.1-0.1-0.2-0.10.20.40.7

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Tampa Bay, FL (4,6,7,8)
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Ground Weather Radar Station Tampa Bay Area, FL
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weather_mapweather_map weather_map

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.