Tuesday, July23, 2019 L-36.com


Marine Weather and Tides
St. Pete Beach, FL

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6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:47AMSunset 8:26PM Tuesday July 23, 2019 9:49 AM EDT (13:49 UTC) Moonrise 11:45PMMoonset 11:33AM Illumination 61% Phase: Waning Gibbous; Moon at 21 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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GMZ853 Coastal Waters From Englewood To Tarpon Springs Fl Out 20 Nm- 354 Am Edt Tue Jul 23 2019
Today..Southwest winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop. Scattered Thunderstorms.
Tonight..Southwest winds 5 to 10 knots increasing to around 15 knots after midnight. Seas 2 feet. Bay and inland waters a moderate chop. Isolated Thunderstorms in the evening, then scattered Thunderstorms after midnight.
Wednesday..Southwest winds around 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop. Numerous Thunderstorms.
Wednesday night..Southwest winds around 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop. Widespread Thunderstorms.
Thursday..Southwest 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. Widespread Thunderstorms in the morning, then numerous Thunderstorms in the afternoon.
Thursday night..Southwest winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. Scattered Thunderstorms.
Friday..Southwest winds around 5 knots then becoming west around 10 knots in the afternoon. Seas 2 feet. Bay and inland waters a light chop. Scattered Thunderstorms.
Friday night..Northeast winds around 10 knots then becoming east after midnight. Seas 2 feet. Bay and inland waters a light chop. Isolated Thunderstorms.
Saturday..Northeast winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop. Isolated Thunderstorms in the morning, then scattered Thunderstorms in the afternoon.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 354 Am Edt Tue Jul 23 2019
Synopsis.. High pressure east of florida will shift southeast today, resulting in a prolonged period of west to southwest winds over the coastal waters. A weak cold front will reach the northern gulf by tonight, bringing enhanced westerly winds and numerous showers and storms offshore the nature coast. Winds and rain will gradually subside Thursday with a return to easterly flow by the weeks end.


7 Day Forecast for Marine Location Near St. Pete Beach, FL
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location: 27.68, -82.86     debug


Area Discussion for - Tampa Bay, FL
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Fxus62 ktbw 231232
afdtbw
area forecast discussion
national weather service tampa bay ruskin fl
832 am edt Tue jul 23 2019

Update
Transition to southwest flow underway across the region... With
morning 12z ktbw sounding reflecting west to southwest flow up to
around 500 mb. Flow is still relatively light over the lowest
3 kilometers... Generally 5 to 10 knots... Which favors coastal
showers and storms during the morning hours then spreading inland
throughout the afternoon. This lines up pretty well with the
existing forecast therefore no significant changes required at
this time.

Aviation
Vfr early across terminals... With the exception of klal which has
had shallow br fg intermittently throughout the morning but
should burn off with daytime heating ensuing following sunrise.

Early lgt vrb conditions will increase to southwest 6 to 10 kts
by 14-15z across terminals before decreasing back to lgt vrb
again overnight at southern terminals. Reductions to MVFR ifr due
to passing shra tsra expected at coastal terminals as early as
14z... With predominantlyVFR conditions returning after 01z or so
as lingering evening convection wanes.

Prev discussion issued 327 am edt Tue jul 23 2019
discussion...

a mid level trough centered over eastern canada extending into the
southeastern us will slowly rotate through the eastern seaboard
today and Wednesday. At the surface, the subtropical ridge axis
stretching from the atlantic across northern florida will be
shunted southeast through Wednesday as a surface trough digs into
northern florida and the northeastern gulf of mexico, setting up
southwesterly flow over the forecast area, holding through
Thursday. This pattern will favor deep moisture advecting across
the area, with showers and storms developing over the gulf waters
during the early morning hours each day and shifting onshore
through the morning and afternoon and into the interior through
the early evening. Upper level support from the trough moving into
the area will cause the highest storm chances of the week on
Wednesday and Thursday, with heavy rainfall and isolated flooding
possible, especially over the nature coast.

The mid level trough will break down Friday through the weekend
with weak ridging building in across florida from the atlantic.

A broad surface ridge will build into the mid atlantic region
during the weekend and into early next week, allowing surface flow
across florida to return to easterly. Deep moisture will continue
to produce scattered to numerous thunderstorms each afternoon,
with the highest chances shifting just inland of the west coast
with the afternoon sea breeze collision.

Aviation...

generallyVFR conditions will hold through mid morning, although
some patchy fog is possible around sunrise. Scattered showers and
thunderstorms will move east through the area from mid morning
through the early evening, with periods of reduced flight
categories possible as storms approach individual terminals.

Marine...

high pressure east of florida will shift southeast today and
tonight as a surface trough pushes south into the northeastern
gulf, with winds becoming southwesterly to westerly. Winds will
generally remain less than 15 knots with seas of no more than 3
feet, although locally higher winds and seas are expected in the
vicinity of daily thunderstorms. Storms will typically form over
the gulf waters and move onshore through the morning and afternoon
hours.

Fire weather...

humidity will remain well above critical levels through the next
several days.

Preliminary point temps pops
Tpa 88 76 87 76 40 40 70 70
fmy 89 76 90 76 40 40 50 40
gif 90 75 89 74 60 20 70 40
srq 89 76 88 76 40 40 70 70
bkv 89 74 87 73 40 50 80 80
spg 88 77 86 76 40 50 70 80

Tbw watches warnings advisories
Fl... None.

Gulf waters... None.

Update aviation... Hurt
upper air... Carlisle
decision support... Jillson
previous discussion... Fleming


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
42098 7 mi49 min 87°F1 ft
CLBF1 10 mi115 min ESE 1.9 G 4.1 78°F 1014.3 hPa
MTBF1 14 mi49 min SSW 5.1 G 6 80°F 1015.3 hPa (+0.9)74°F
SAPF1 - 8726520 - St. Petersburg, FL 14 mi55 min S 4.1 G 5.1 80°F 86°F1015.5 hPa
PMAF1 16 mi49 min 80°F 85°F1015.2 hPa
GCTF1 19 mi49 min 79°F 1015.3 hPa (+1.0)74°F
OPTF1 - 8726607 - Old Port Tampa, FL 20 mi49 min S 7 G 8.9 80°F 87°F1015.2 hPa (+0.8)
CWBF1 - 8726724 - Clearwater Beach, FL 21 mi49 min SE 2.9 G 6 80°F 87°F1015.3 hPa (+0.9)
MCYF1 28 mi49 min 88°F
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 29 mi49 min S 5.1 G 8
TSHF1 - 8726667 - East Bay Causeway, FL 29 mi49 min SE 5.1 G 7
FHPF1 - Fred Howard Park, FL 33 mi115 min SE 4.1 G 6 77°F 1015.7 hPa
42013 - C10 - Navy-2 35 mi79 min WSW 5.8 G 7.8 83°F 86°F1015.5 hPa
VENF1 - Venice, FL 47 mi49 min SSE 8 G 9.9 81°F 87°F1015.4 hPa (+1.1)78°F
42022 48 mi79 min WNW 1.9 G 3.9 84°F 86°F1015.4 hPa

Wind History for C-Cut, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Albert Whitted Airport, FL14 mi56 minS 410.00 miFair80°F75°F85%1014.6 hPa
St. Petersburg/Clearwater Airport, FL18 mi56 minS 410.00 miFair79°F75°F88%1015 hPa
Macdill Air Force Base, Fl., FL22 mi53 minSSE 510.00 miFair80°F74°F83%1015.5 hPa

Wind History from SPG (wind in knots)
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Last 24hrSE7SE6SE4SE4CalmSW8W9SW9
G17
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1 day agoE6SE6SE4SW3SE5NW7
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NE5E10E10SE8S8S10S7SE7SE9SE5E7E6E8SE7E6SE8
2 days agoSE8SE7SE5SE3SE3E3E4SE3S20SW4N6NE6NE4E8E4N7E9E7E8E7SE7E6SE7E6

Tide / Current Tables for Pass-a-Grille Beach, Florida
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Pass-a-Grille Beach
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Tue -- 12:12 AM EDT     Moonrise
Tue -- 05:50 AM EDT     1.62 feet High Tide
Tue -- 06:49 AM EDT     Sunrise
Tue -- 11:46 AM EDT     0.87 feet Low Tide
Tue -- 12:32 PM EDT     Moonset
Tue -- 05:28 PM EDT     1.65 feet High Tide
Tue -- 08:25 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.60.91.21.41.61.61.51.41.210.90.911.21.41.51.61.61.51.31.10.80.7

Tide / Current Tables for Tampa Bay Entrance (Egmont Channel), Florida Current
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Tampa Bay Entrance (Egmont Channel)
Click for Map
Tue -- 12:12 AM EDT     Moonrise
Tue -- 01:24 AM EDT     0.00 knots Slack
Tue -- 04:43 AM EDT     1.29 knots Max Flood
Tue -- 06:49 AM EDT     Sunrise
Tue -- 08:09 AM EDT     -0.00 knots Slack
Tue -- 10:44 AM EDT     -0.68 knots Max Ebb
Tue -- 12:32 PM EDT     Moonset
Tue -- 01:43 PM EDT     0.00 knots Slack
Tue -- 04:45 PM EDT     0.77 knots Max Flood
Tue -- 07:26 PM EDT     -0.00 knots Slack
Tue -- 08:25 PM EDT     Sunset
Tue -- 10:38 PM EDT     -0.98 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.8-0.20.30.91.21.310.60.1-0.4-0.6-0.7-0.5-0.30.10.50.70.80.60.2-0.3-0.7-0.9-1

Weather Map and Satellite Images
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wmap_A
GOES Local Image of Southeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Tampa Bay, FL (9,2,3,4)
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Ground Weather Radar Station Tampa Bay Area, FL
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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.