Tuesday, May22, 2018 L-36.com


Marine Weather and Tides
St. Petersburg, FL

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 6:36AMSunset 8:18PM Tuesday May 22, 2018 3:41 PM EDT (19:41 UTC) Moonrise 12:54PMMoonset 1:18AM Illumination 55% Phase: First Quarter Moon; Moon at 8 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- 1000 Am Edt Tue May 22 2018
This afternoon..Southeast winds around 10 knots. Bay and inland waters a light chop. Scattered showers and isolated Thunderstorms.
Tonight..Southeast winds around 10 knots. Bay and inland waters a light chop. Scattered showers and isolated Thunderstorms in the evening.
Wednesday..Southeast winds around 10 knots becoming southwest late in the afternoon. Bay and inland waters a light chop. Isolated Thunderstorms. Scattered showers in the afternoon.
Wednesday night..West winds 5 to 10 knots becoming east after midnight. Bay and inland waters smooth. Scattered showers and isolated Thunderstorms.
Thursday..Southeast winds 5 to 10 knots. Bay and inland waters smooth. Numerous showers and isolated Thunderstorms.
Thursday night..Southeast winds around 5 knots becoming east around 10 knots after midnight. Bay and inland waters a light chop. Scattered showers and isolated Thunderstorms.
Friday..East winds around 10 knots becoming southeast around 15 knots in the afternoon. Bay and inland waters a light to moderate chop. Numerous showers and isolated Thunderstorms.
Friday night..Southeast winds around 15 knots. Bay and inland waters a moderate chop. Scattered showers and isolated Thunderstorms.
Saturday..Southeast winds around 15 knots. Bay and inland waters a moderate chop. Widespread showers and isolated Thunderstorms.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 1000 Am Edt Tue May 22 2018
Synopsis..Southeast flow will persist over the waters for the next several days. Winds are expected to remain 15 knots or less with seas 4 feet or less through the end of the week...however winds and seas may be higher in the vicinity of Thunderstorms each day. An area of low pressure may develop over the gulf during the upcoming weekend and all mariners should continue to Monitor the progress of this system in the coming days.

7 Day Forecast for Marine Location Near St. Petersburg, FL
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location: 27.77, -82.62     debug


Area Discussion for - Tampa Bay, FL
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Fxus62 ktbw 221920
afdtbw
area forecast discussion
national weather service tampa bay ruskin fl
320 pm edt Tue may 22 2018

Short term (tonight through Wednesday)
Little overall change through Wednesday as the eastern gulf of
mexico and florida continue to reside underneath a broad cyclonic
flow pattern. Moisture has decreased slightly, precipitable water
between 1.7 and 1.9 inches, but still plenty when combined with
daytime heating and the sea breezes for a more typical coverage of
diurnal storms across the area. Locally heavy rainfall will continue
to be the main issue with minor flooding of low lying and poor
drainage areas possible. Low temperatures will be near normal
in the upper 60s to lower 70s while daytime highs are near
to slightly below normal in the mid to upper 80s.

Mid term long term (Wednesday night through next Tuesday)
The main concerns for the long-term forecast period will continue to
be the potential for heavy rainfall along with localized flooding
and river flooding. A broad cyclonic flow will generally remain over
the region through early next week, with abundant deep tropical
moisture continuing to stream over the region. At the surface, the
subtropical ridge axis will extend across the northern florida
peninsula, keeping a low-level southeast wind flow in place. For
both Thursday and Friday, we can expect scattered to numerous
showers and thunderstorms across the forecast area with a bit of a
break overnight, but likely still not totally dry.

As we head into the weekend, the threat for heavy rainfall and
flooding will remain as a disturbance lifts out of the caribbean sea
and into the central or eastern gulf of mexico on Saturday. This
disturbance is currently quite disorganized, so models are having a
hard time with its evolution over the next several days. The latest
gfs is farther east with its solution than the ecmwf, which takes
the system more into the central gulf and into the ms la region. The
ecmwf is also about a day faster than the gfs. Having said all that,
regardless of timing or whether this system becomes tropical or not,
the impacts will continue to be a concern and those are more heavy
rain with additional flooding. Still several days to keep an eye on
the evolution of this system, but even a central gulf track versus
an eastern gulf track would not necessarily make that big of a
difference as far as impacts for our region. This system would have
to track farther west than is currently being shown to have a
diminishing heavy rainfall threat for us.

For early next week, global models continue to show cyclonic flow
over the region with continued deep moisture over the region, so the
threat for additional rainfall looks to remain.

Aviation
Some areas of MVFR ceilings will be possible this morning, then
scattered to numerous showers and thunderstorms are expected this
afternoon which could cause some more MVFR local ifr conditions
along with gusty winds up to around 30 knots. Convection will wind
down this evening with mainlyVFR conditions overnight followed by a
repeat of today on Wednesday.

Marine
Southeast flow will continue at 15 knots or less for the next few
days with the west coast sea breeze trying to develop each afternoon
through Thursday. Winds and seas will remain below advisory levels
through Thursday with the main hazard continuing to be the scattered
showers and thunderstorms with some of the stronger storms capable
of producing strong gusty winds and locally rough seas. Late in the
week winds and seas could increase to near advisory levels, but this
all depends on the evolution and movement of the area of low
pressure moving out of the western caribbean sea.

Fire weather
No fire weather hazards are expected for the next several days as
relative humidity values are expected to remain well above critical
levels.

Preliminary point temps pops
Tpa 72 88 74 86 30 40 30 60
fmy 72 89 72 87 20 70 30 60
gif 71 89 72 88 20 50 20 60
srq 72 87 73 85 20 40 30 50
bkv 69 89 71 88 30 40 40 50
spg 75 87 75 86 30 40 30 60

Tbw watches warnings advisories
Fl... None.

Gulf waters... None.

Short term aviation marine fire weather... 69 close
mid term long term decision support... 05 carlisle


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAPF1 - 8726520 - St. Petersburg, FL 1 mi42 min SE 2.9 G 6 81°F 78°F1017.3 hPa (-1.4)
CLBF1 4 mi108 min ESE 1.9 G 5.1 86°F 1017 hPa
OPTF1 - 8726607 - Old Port Tampa, FL 7 mi42 min SSW 6 G 8 81°F 80°F1017.5 hPa (-1.6)
MTBF1 8 mi42 min W 7 G 8 76°F 1017.8 hPa (-1.3)70°F
PMAF1 10 mi42 min 77°F 79°F1017.5 hPa (-1.3)
MCYF1 14 mi42 min 80°F
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 15 mi54 min ESE 7 G 9.9
TSHF1 - 8726667 - East Bay Causeway, FL 15 mi42 min NNE 6 G 8.9
CWBF1 - 8726724 - Clearwater Beach, FL 18 mi42 min E 4.1 G 8 82°F 80°F1017.6 hPa (-1.4)
42098 21 mi72 min 80°F2 ft
FHPF1 - Fred Howard Park, FL 28 mi108 min SSE 16 G 19 77°F 1018.8 hPa
42013 - C10 - Navy-2 44 mi72 min SSE 3.9 G 5.8 78°F
ARPF1 - APK - Aripeka, FL 46 mi108 min NE 1 G 2.9 78°F 1018.7 hPa
VENF1 - Venice, FL 49 mi42 min ENE 6 G 7 73°F 79°F1017.8 hPa (-0.9)72°F

Wind History for St. Petersburg, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Albert Whitted Airport, FL1 mi49 minE 710.00 miMostly Cloudy78°F73°F85%1016.9 hPa
Macdill Air Force Base, Fl., FL8 mi1.8 hrsN 010.00 miMostly Cloudy82°F70°F69%1018.2 hPa
St. Petersburg/Clearwater Airport, FL10 mi49 minN 010.00 miMostly Cloudy86°F75°F70%1017.4 hPa
Tampa, Peter O Knight Airport, FL14 mi87 minN 010.00 miMostly Cloudy81°F69°F70%1017.9 hPa
Tampa, Tampa International Airport, FL15 mi49 minVar 410.00 miMostly Cloudy85°F71°F63%1017.4 hPa
Tampa, Vandenberg Airport, FL22 mi67 minESE 510.00 miMostly Cloudy82°F69°F66%1018.3 hPa

Wind History from SPG (wind in knots)
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Last 24hrSE9SE9E6S6CalmCalmNE3NE4SE12SE9SE10SE12SE11SE10SE10SE12SE11SE11SE9S9S6S9NE4E7
1 day agoSE18SE17S17S15SE10SE10SE12SE10SE8SE7SE13SE11SE9SE9SE8SE11SE9SE8SE9SE9SE7SW4--SE7
2 days agoNW7E19E9E13SE13SE10SE15E13SE17SE13SE13SE6E7SE10E11E13E14E15E10SE10SE8E11SE12SE10

Tide / Current Tables for St. Petersburg, Tampa Bay, Florida
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St. Petersburg
Click for Map
Tue -- 02:18 AM EDT     Moonset
Tue -- 03:18 AM EDT     -0.04 feet Low Tide
Tue -- 06:37 AM EDT     Sunrise
Tue -- 11:01 AM EDT     1.64 feet High Tide
Tue -- 01:54 PM EDT     Moonrise
Tue -- 03:10 PM EDT     1.35 feet Low Tide
Tue -- 08:16 PM EDT     Sunset
Tue -- 08:41 PM EDT     1.92 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.40.1-0-00.20.50.91.21.41.61.61.61.51.41.41.41.51.61.81.91.91.81.6

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
Tue -- 01:21 AM EDT     -1.08 knots Max Ebb
Tue -- 02:17 AM EDT     Moonset
Tue -- 05:06 AM EDT     0.00 knots Slack
Tue -- 06:37 AM EDT     Sunrise
Tue -- 08:23 AM EDT     1.09 knots Max Flood
Tue -- 11:56 AM EDT     -0.00 knots Slack
Tue -- 01:53 PM EDT     Moonrise
Tue -- 02:29 PM EDT     -0.52 knots Max Ebb
Tue -- 04:59 PM EDT     0.00 knots Slack
Tue -- 07:19 PM EDT     0.50 knots Max Flood
Tue -- 08:16 PM EDT     Sunset
Tue -- 10:05 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1-1.1-1.1-0.9-0.6-0.10.50.91.11.10.80.4-0-0.3-0.5-0.5-0.300.30.50.50.30-0.3

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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Tampa Bay, FL (15,3,4,5)
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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.