Tuesday, October17, 2017 L-36.com


Marine Weather and Tides
Treasure Island, 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 7:32AMSunset 7:00PM Tuesday October 17, 2017 7:19 AM EDT (11:19 UTC) Moonrise 4:26AMMoonset 5:02PM Illumination 9% Phase: Waning Crescent; Moon at 27 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
GMZ830 Tampa Bay Waters- 340 Am Edt Tue Oct 17 2017
Today..Northeast winds 10 to 15 knots. Bay and inland waters a moderate chop. Scattered showers in the morning. Isolated Thunderstorms.
Tonight..Northeast winds 15 to 20 knots diminishing to 10 to 15 knots in the late evening and overnight. Bay and inland waters choppy. Scattered showers and isolated Thunderstorms in the evening.
Wednesday..Northeast winds around 15 knots. Bay and inland waters a moderate chop. Scattered showers in the afternoon.
Wednesday night..Northeast winds around 15 knots. Bay and inland waters a moderate chop. Scattered showers in the evening.
Thursday..Northeast winds around 15 knots. Bay and inland waters a moderate chop. Isolated Thunderstorms.
Thursday night..Northeast winds around 15 knots. Bay and inland waters a moderate chop. Isolated Thunderstorms in the evening.
Friday..Northeast winds around 15 knots. Bay and inland waters a moderate chop.
Friday night..East winds around 15 knots. Bay and inland waters a moderate chop.
Saturday..East winds around 15 knots. Bay and inland waters a moderate chop. Isolated Thunderstorms.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 340 Am Edt Tue Oct 17 2017
Synopsis.. Cautionary to borderlined advisory winds will persist over the northern waters today behind a stalled front. As high pressure intensifies north of the waters today and tonight, cautionary to advisory level winds are forecast to spread southward to include most of the coastal waters. Breezy northeast winds coupled with building seas will likely generate hazardous boating conditions, especially over the offshore waters tonight into early Wednesday morning. While winds may slacken somewhat during the day Wednesday, easterly wind surges will likely result in periods of cautionary to advisory level winds each night and early morning through the latter half of the week. This weekend, winds may improve a bit as high pressure finally slips eastward, resulting in a relaxed gradient over the waters.

7 Day Forecast for Marine Location Near Treasure Island city, FL
   Hourly   EDIT   Help
location: 27.77, -82.78     debug


Area Discussion for - Tampa Bay, FL
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus62 ktbw 170736
afdtbw
area forecast discussion
national weather service tampa bay ruskin fl
336 am edt Tue oct 17 2017

Short term (today and Wednesday)
The upper pattern across the CONUS is defined by broad
upper ridging over the eastern pacific into the southwest
u.S. And broad upper troughing from the northern plains
southward into the eastern gulf of mexico. Within this
trough, a substantial shortwave trough has moved off the mid
atlantic and new england coasts. A trailing cold front
continues to decelerate this morning, extending from the
northern gulf of mexico into the florida big bend and
southern georgia. This feature, and a building surface high
will be the dominant weather features through tomorrow.

As the shortwave trough departs, the energy driving the
cold front south and east will depart, forcing it to stall
later today over far northern florida. Areas north of the
front will get a fresh taste of fall weather with much drier
and cooler air settling in. Over much of the florida
peninsula, we will see slightly cooler temperatures due to
abundant cloud cover, but we will have to wait a bit longer
for a true taste of fall, as muggy conditions will prevail.

A smattering of showers mixed with the occasional storm will
drift from northeast to southwest across the peninsula
today with the greater chances for rain over interior and
eastern parts of the peninsula.

Expect mainly dry conditions overnight tonight. As slightly
drier air spills in from the north, lows will be a bit
cooler than the last few nights, ranging from the lower to
mid 60s north along the nature coast, to the lower to mid
70s elsewhere.

High pressure will continue to build over the southeast
u.S. Tonight into early Wednesday, with prevailing
east northeast flow. This will bring episodes of heavy
rainfall to the florida atlantic coast, but as moisture is
gradually squeezed out from east to west, lesser chances for
rain will reside over interior and western portions of the
peninsula. Still, a chance of a few showers will exist, with
the greater potential remaining over interior middle spinal
parts of the peninsula. High temperatures will begin to
rebound tomorrow with highs reaching the middle and upper
80s.

Long term (Wednesday night through Monday)
Wednesday night and Thursday, a week mid level trough over
florida will gradually shift east as an amplified ridge
builds into the gulf of mexico and deep south. A weak
frontal boundary associated with this trough will be stalled
out across the northern portion of the florida peninsula,
with a dry air mass filling in to the north of the boundary.

This will keep rain chances limited over the nature coast
Thursday, but modest moisture south of the boundary will
still allow for isolated to scattered showers and
thunderstorms from around tampa bay south.

Friday and Saturday, the ridging aloft will shift east and
move over florida, bringing subsidence and drier air into
the region, limiting rain chances even further. Friday in
particular looks to be the driest day during the period,
with only 10 to 20 percent rain coverage forecast. By
Sunday, the mid level ridge will have moved east of florida
as an amplified trough crosses the mississippi river valley,
with a strong surface ridge setting up off the coast of new
england. This will allow the low level flow to turn to
southwesterly, bringing a quick return of moisture to the
area. As a result, more scattered showers and thunderstorms
are forecast for Sunday and Monday.

Temperatures will remain near to a few degrees above
normal, with highs in the 80s and lows generally from the
mid 60s to low 70s

Aviation (06z tafs)
A remnant front will stall north of terminals. A cluster of
showers and storms in progress over northeast florida will
build southward overnight, with possible impacts to klal,
where vcsh is maintained. BrokenVFR CIGS to prevail
overnight, thought patchy MVFR CIGS and vsbys due to fog may
occur most anywhere. Light and variable winds will become
northeasterly by sunrise. Scattered showers will move from
northeast to southwest across the region.

Marine
Cautionary to borderlined advisory winds will persist over
the northern waters today. As high pressure intensifies
north of the waters today and tonight, cautionary to
advisory level winds are forecast to spread southward to
include most of the coastal waters. Breezy northeast winds
coupled with building seas will likely generate hazardous
boating conditions, especially over the offshore waters
tonight into early Wednesday morning. While winds may
slacken somewhat during the day Wednesday, easterly wind
surges will likely result in periods of cautionary to
advisory level winds each night and early morning through
the latter half of the week. Over the weekend, winds may
improve a bit as high pressure finally slips eastward,
resulting in a relaxed gradient over the waters.

Fire weather
A cold front will stall north of the region today, bringing
waves of showers and occasional thunderstorms. High
pressure building in north of the region will result in
northeast winds much of this week. This will allow atlantic
moisture to stream across the peninsula with daily chances
for showers. As moisture will remain high, and relatively
humidities will remain above critical levels, no fire
weather concerns are expected.

Preliminary point temps pops
Tpa 82 70 85 71 30 10 30 10
fmy 85 72 86 71 40 30 40 10
gif 82 70 83 69 50 30 40 10
srq 84 72 86 71 20 10 30 10
bkv 80 68 84 68 20 10 30 10
spg 81 71 83 72 30 10 30 10

Tbw watches warnings advisories
Fl... None.

Gulf waters... None.

Short term aviation marine fire weather... 84 austin
mid term long term decision support... 18 fleming


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
CLBF1 5 mi85 min NE 8 G 15 76°F 1014.8 hPa
SAPF1 - 8726520 - St. Petersburg, FL 8 mi49 min ENE 16 G 23 74°F 83°F1016.1 hPa
MTBF1 12 mi49 min ENE 23 G 25 75°F 1015.9 hPa
OPTF1 - 8726607 - Old Port Tampa, FL 13 mi49 min ENE 8 G 14 73°F 83°F1015.9 hPa
CWBF1 - 8726724 - Clearwater Beach, FL 15 mi49 min ENE 11 G 14 73°F 82°F1016 hPa
PMAF1 15 mi49 min 73°F 81°F1015.1 hPa
MCYF1 21 mi49 min 84°F
TSHF1 - 8726667 - East Bay Causeway, FL 22 mi55 min ENE 8 G 12
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 22 mi55 min NNE 7 G 12
FHPF1 - Fred Howard Park, FL 26 mi85 min E 12 G 15 1015.8 hPa
ARPF1 - APK - Aripeka, FL 46 mi145 min E 9.9 G 14 74°F 1015.6 hPa

Wind History for St. Petersburg, 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
E4
E3
E3
NE3
E4
E3
E2
E4
G7
E4
NE2
SE2
SW1
N7
G11
N7
N7
G11
N5
G9
NE5
G9
NE6
NE4
E4
E4
E3
N4
G7
NE13
G21
1 day
ago
NE7
NE8
G11
NE7
G10
NE7
G10
E6
NE6
NE5
NE4
NE3
W8
G11
NW10
G14
NE16
G22
N5
G10
NE5
N2
N4
N4
NE6
E5
G9
E6
G9
E3
G7
E5
E5
G8
E6
2 days
ago
E9
G14
E11
E10
G16
E8
G14
E8
G11
E7
G10
E10
G15
NE8
G11
NE12
G17
E12
G16
E7
G10
E6
G11
E11
G14
E10
G13
E10
G14
E11
G14
E8
G13
E8
G12
E7
G12
E10
G13
E6
G10
E6
G9
NE7
G10
NE6

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Albert Whitted Airport, FL8 mi26 minE 2110.00 miA Few Clouds and Breezy74°F73°F97%1015.7 hPa
St. Petersburg/Clearwater Airport, FL11 mi26 minNE 13 G 2110.00 miOvercast75°F71°F88%1016.4 hPa
Macdill Air Force Base, Fl., FL15 mi21 minE 1410.00 miMostly Cloudy72°F72°F100%1016.5 hPa
Tampa, Tampa International Airport, FL19 mi26 minNE 610.00 miOvercast73°F70°F90%1016.8 hPa
Tampa, Peter O Knight Airport, FL20 mi24 minENE 1310.00 miLight Drizzle0°F0°F%1016.9 hPa

Wind History from SPG (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 24hrE5E5E4E6E4E3E5E5E3S4CalmN8N7N11N8NE9NE9NE7E6E6E6NE8NE20E21
1 day agoE8NE9E8E8E8E5NE3CalmCalmNW11N12
G21
N10N6N3N6N5E6SE10E8SE9SE7SE7E7E7
2 days agoE13E13E14E12E10E14E10E18E18SE11SE11E13E15E14E16E15E11E12E13E10E9NE9NE8E9

Tide / Current Tables for Johns Pass, Florida
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Johns Pass
Click for Map
Tue -- 05:07 AM EDT     0.79 feet Low Tide
Tue -- 05:26 AM EDT     Moonrise
Tue -- 07:32 AM EDT     Sunrise
Tue -- 11:14 AM EDT     2.12 feet High Tide
Tue -- 05:31 PM EDT     0.67 feet Low Tide
Tue -- 06:02 PM EDT     Moonset
Tue -- 06:59 PM EDT     Sunset
Tue -- 11:27 PM EDT     2.07 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.91.71.51.10.90.80.91.11.41.722.12.11.91.61.20.90.70.70.91.21.61.92

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
Tue -- 01:46 AM EDT     -0.00 knots Slack
Tue -- 04:36 AM EDT     -1.19 knots Max Ebb
Tue -- 05:26 AM EDT     Moonrise
Tue -- 07:32 AM EDT     Sunrise
Tue -- 07:49 AM EDT     0.00 knots Slack
Tue -- 11:02 AM EDT     1.55 knots Max Flood
Tue -- 01:57 PM EDT     -0.00 knots Slack
Tue -- 04:55 PM EDT     -1.34 knots Max Ebb
Tue -- 06:02 PM EDT     Moonset
Tue -- 06:59 PM EDT     Sunset
Tue -- 08:12 PM EDT     0.00 knots Slack
Tue -- 11:16 PM EDT     1.52 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.20.6-0.2-0.8-1.1-1.2-0.9-0.50.10.81.31.51.30.7-0-0.7-1.2-1.3-1.2-0.8-0.10.61.21.5

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Tampa Bay, FL (7,2,3,4)
      (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

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.