Friday, March24, 2017 L-36.com


Marine Weather and Tides
Harbor Bluffs, 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 7:27AMSunset 7:46PM Friday March 24, 2017 9:50 PM EDT (01:50 UTC) Moonrise 4:08AMMoonset 3:30PM Illumination 7% 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
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GMZ830 Tampa Bay Waters- 844 Pm Edt Fri Mar 24 2017
Rest of tonight..East winds 5 to 10 knots increasing to around 15 knots in the late evening and overnight. Bay and inland waters a moderate chop.
Saturday..East winds around 15 knots then becoming southeast 5 to 10 knots in the late morning and afternoon. Bay and inland waters a moderate chop.
Saturday night..Northeast winds around 10 knots then becoming east after midnight. Bay and inland waters a light chop.
Sunday..Southeast winds around 10 knots then becoming south around 5 knots early in the afternoon, then becoming southwest around 5 knots late in the afternoon. Bay and inland waters a light chop.
Sunday night..Northwest winds around 5 knots then becoming east after midnight. Bay and inland waters smooth.
Monday..Southeast winds around 5 knots then becoming southwest late in the afternoon. Bay and inland waters smooth.
Monday night..Northwest winds around 5 knots then becoming east after midnight. Bay and inland waters smooth.
Tuesday..Southeast winds around 5 knots then becoming southwest in the afternoon. Bay and inland waters smooth.
Tuesday night..West winds around 5 knots then becoming east toward morning. Bay and inland waters smooth.
Wednesday..Southeast winds around 5 knots then becoming southwest in the afternoon. Bay and inland waters smooth.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 844 Pm Edt Fri Mar 24 2017
Synopsis..Strong high pressure off the mid-atlantic coast ridges southwestward across the waters. This high slides east through the weekend with an axis across the southeastern states. As the high continues to move east early next week the axis settles down across central florida.

7 Day Forecast for Marine Location Near Harbor Bluffs, FL
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location: 27.91, -82.82     debug


Area Discussion for - Tampa Bay, FL
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Fxus62 ktbw 241921
afdtbw
area forecast discussion
national weather service tampa bay ruskin fl
321 pm edt Fri mar 24 2017

Short term (tonight-Saturday)
Weak mid/high level ridging will hold across the region as surface
high pressure off the mid-atlantic coast drifts east out into the
atlantic ocean, but continues to ridge west-southwest across the
area. This will keep an east to southeast low level flow across
the region continuing to advect atlantic moisture westward leading
to more scattered to broken stratocumulus/altocumulus and maybe a
sprinkle or two over the southern interior and southwest counties.

Otherwise, the low level flow will not be as strong on Saturday as
the gradient relaxes some and this should allow the west coast sea
breeze to develop near the coast during the afternoon.

Temperatures will remain a few degrees above normal with lows
tonight in the mid 50s north to the lower and middle 60s near the
coast from around tampa bay southward. Highs on Saturday will climb
into the lower to middle 80s, except close to the coast where the
sea breeze should hold them in the mid to upper 70s.

Mid term/long term (Saturday night-Friday)
A series of short wave troughs/lows aloft will transit eastward
across the nation through the period... With nearly zonal flow to a
relaxed and meandering upper ridge residing over the gulf of
mexico region. This pattern will keep the bulk of the energy and
frontal boundaries north of our area... Allowing atlantic high
pressure to reach across the state and over the gulf of mexico.

For the most part - a stable and generally dry air mass, model
pwat values run about 1 inch, prevails. The forecast will be rain
free with mostly clear/sunny skies and temperatures on the warm
side of normal, perhaps by 3 to 5 degrees. Winds will initially
be east to southeast with a relaxed gradient permitting afternoon
sea breezes. With time the surface ridge settles south with winds
more southerly to southwesterly.

However, there are two exceptions. The first short wave trough or
low will brush by Sat night or early Sun with some cloudiness
possible. Then the last trough/low is slightly deeper and takes a
more southerly track, pushing a cold front into the gulf for the
end of the work week. The ECMWF has a weaker and slower system
than the GFS which is more robust and faster. For now have leaned
toward the GFS and introduced some low odds of showers across the
northern counties... Although this will be subject to revision.

Aviation
Vfr conditions will prevail at all terminals for next 24 hours.

Easterly winds between 10 and 15 knots with gusts to around 25
knots will continue through late afternoon, then diminish some
this evening. Winds shift to a more southeast direction at 8 to 13
knots mid-morning Saturday then diminish and shift to southwest to
west near the coast as the west coast sea breeze moves inland
during the afternoon. No other aviation impacts are expected at
this time.

Marine
Strong high pressure off the mid-atlantic coast will drift east
well out into the atlantic ocean over the weekend, but continue to
ridge west-southwest across the waters. The breezy easterly winds
will diminish this afternoon falling below 15 knots. However,
during the evening we will see a surge which will bump winds back
to exercise caution criteria overnight. Winds will diminish once
again during Saturday with the west coast sea breeze developing
near the coast during the afternoon before the evening surge
shifts winds back to easterly during Saturday night with a repeat
on Sunday and Sunday night. A similar pattern will continue
through early next week, but winds will remain less than 15 knots
and seas 3 feet or less.

Fire weather
Relative humidity values will remain above critical thresholds
through early next week, but could bottom out near 35 percent
briefly each afternoon. After this afternoon winds are expected to
remain below 15 mph through early next week with the west coast
sea breeze developing near the coast each afternoon. No other fire
weather concerns are anticipated at this time.

Preliminary point temps/pops
Tpa 63 82 65 81 / 0 5 5 0
fmy 62 84 62 84 / 0 10 10 5
gif 60 83 61 84 / 0 0 0 5
srq 61 81 62 79 / 0 5 5 0
bkv 57 82 58 82 / 0 5 5 5
spg 66 79 66 80 / 0 5 5 0

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

Gulf waters... None.

Short term/aviation/marine/fire weather... 69/close
mid term/long term/decision support... 09/rude


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CLBF1 14 mi116 min E 8 G 18 75°F 1021.9 hPa
OPTF1 - 8726607 - Old Port Tampa, FL 15 mi50 min E 8.9 G 14 71°F 71°F1024 hPa (+1.2)
SAPF1 - 8726520 - St. Petersburg, FL 15 mi50 min E 13 G 17 71°F 71°F1023.3 hPa (+1.1)
FHPF1 - Fred Howard Park, FL 17 mi116 min E 9.9 G 12 76°F 1022.9 hPa
TSHF1 - 8726667 - East Bay Causeway, FL 21 mi50 min E 7 G 13
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 21 mi56 min ENE 8.9 G 12
MTBF1 21 mi50 min ESE 16 G 20 71°F 1023.8 hPa (+1.0)59°F
MCYF1 21 mi50 min 70°F
42098 23 mi50 min 69°F2 ft
PMAF1 23 mi50 min 70°F 69°F1023 hPa (+1.4)
ARPF1 - APK - Aripeka, FL 37 mi116 min E 2.9 G 5.1 74°F 1022.9 hPa

Wind History for Clearwater Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St. Petersburg/Clearwater Airport, FL7 mi57 minE 14 G 2110.00 miFair72°F57°F59%1023.6 hPa
St. Petersburg Whitted Airport, FL14 mi57 minESE 1710.00 miFair71°F61°F71%1023.5 hPa
Macdill Air Force Base, Fl., FL16 mi52 minESE 1110.00 miFair71°F58°F66%1024 hPa
Tampa, Tampa International Airport, FL16 mi57 minE 10 G 1810.00 miFair73°F55°F55%1024.1 hPa
Tampa, Peter O Knight Airport, FL20 mi75 minE 14 G 2010.00 miMostly Cloudy73°F59°F61%1024 hPa

Wind History from PIE (wind in knots)
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1 day agoW6W7N6NE5N4N4NE5N4N5NE5NE5NE8E7NE8E8E12E12E7E7E11E17
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2 days agoW5W5W4W6NW7NW5NW6W4W6W5W3W6NW10NW12NW14NW10NW10NW10W11NW10W8W11W8W6

Tide / Current Tables for Clearwater, Florida
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Clearwater
Click for Map
Fri -- 04:47 AM EDT     -0.03 feet Low Tide
Fri -- 05:08 AM EDT     Moonrise
Fri -- 07:30 AM EDT     Sunrise
Fri -- 11:05 AM EDT     2.08 feet High Tide
Fri -- 04:30 PM EDT     Moonset
Fri -- 04:58 PM EDT     0.64 feet Low Tide
Fri -- 07:44 PM EDT     Sunset
Fri -- 10:39 PM EDT     2.08 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.51.10.70.30-00.10.51.11.61.92.121.71.310.70.60.811.41.822.1

Tide / Current Tables for Old Tampa Bay Entrance (Port Tampa), Florida Current
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Old Tampa Bay Entrance (Port Tampa)
Click for Map
Fri -- 12:36 AM EDT     -0.00 knots Slack
Fri -- 05:07 AM EDT     Moonrise
Fri -- 05:25 AM EDT     -1.09 knots Max Ebb
Fri -- 07:29 AM EDT     Sunrise
Fri -- 08:44 AM EDT     0.00 knots Slack
Fri -- 11:49 AM EDT     1.11 knots Max Flood
Fri -- 03:08 PM EDT     -0.00 knots Slack
Fri -- 04:29 PM EDT     Moonset
Fri -- 05:48 PM EDT     -0.68 knots Max Ebb
Fri -- 07:43 PM EDT     Sunset
Fri -- 08:16 PM EDT     0.00 knots Slack
Fri -- 10:50 PM EDT     0.83 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.2-0.1-0.5-0.8-1-1.1-1.1-0.9-0.40.20.711.10.90.50.1-0.4-0.6-0.7-0.5-0.10.40.70.8

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 (21,6,7,8)
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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.