Thursday, March23, 2017 L-36.com


Marine Weather and Tides
Holmes Beach, 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 7:28AMSunset 7:44PM Thursday March 23, 2017 6:09 PM EDT (22:09 UTC) Moonrise 3:23AMMoonset 2:33PM Illumination 14% Phase: Waning Crescent; Moon at 26 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- 305 Pm Edt Thu Mar 23 2017
.small craft exercise caution tonight...
Tonight..East winds 10 to 15 knots increasing to 15 to 20 knots in the late evening and early morning, then diminishing to 10 to 15 knots toward morning. Seas 2 to 3 feet. Bay and inland waters choppy. A slight chance of Thunderstorms in the evening.
Friday..East 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.
Friday night..East winds around 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop.
Saturday..East winds around 15 knots then becoming southeast 5 to 10 knots early in the afternoon, then becoming southwest around 5 knots late in the afternoon. Seas 2 to 3 feet. Bay and inland waters a moderate chop.
Saturday night..Northwest winds around 5 knots then becoming north around 5 knots late in the evening, then becoming east around 10 knots after midnight. Seas 2 feet or less. Bay and inland waters a light chop.
Sunday..Southeast winds around 10 knots then becoming southwest around 5 knots late in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop.
Sunday night..Northwest winds around 5 knots then becoming north around 10 knots late in the evening, then becoming east after midnight. Seas 2 feet or less. Bay and inland waters a light chop.
Monday..Southeast winds around 10 knots then becoming southwest around 5 knots in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop.
Monday night..West winds around 10 knots then becoming east around 5 knots toward morning. Seas 2 feet or less. Bay and inland waters a light chop.
Tuesday..Southeast winds around 5 knots then becoming southwest in the afternoon. Seas 2 feet or less. Bay and inland waters smooth.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 305 Pm Edt Thu Mar 23 2017
Synopsis..A frontal boundary moves through the waters this afternoon and evening with some showers and Thunderstorms with winds and seas increasing to caution or advisory levels overnight. High pressure dominates with easterly flow and evening surges into the weekend. Then the high settles south with a relaxing gradient...allowing winds to veer and diminish.

7 Day Forecast for Marine Location Near Holmes Beach, FL
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location: 27.51, -82.71     debug


Area Discussion for - Tampa Bay, FL
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Fxus62 ktbw 231838
afdtbw
area forecast discussion
national weather service tampa bay ruskin fl
238 pm edt Thu mar 23 2017

Short term (rest of today - Friday)
Aloft north america early this afternoon - a robust low was
near the four corners region... A ridge reached from the
mexican gulf coast to hudson bay... And a trough stretched
across the atlantic from labrador to the bahamas. At the
surface - low pressure in the central high plains had a
warm front across the central plains and a cold front
trailing down into northwest mexico. High pressure centered
on the mid-atlantic coast sprawled from eastern canada to
much of the gulf of mexico... With a weak back door cold
front across south-central fl.

Through the period - the four corners upper low moves to the
central plains while another low drops into northern quebec
from the canadian archipelago... With the eastern ridge
flattening and re-locating from the gulf of mexico to the
mid-atlantic coastal waters. The western surface low and
frontal systems slide toward the mississippi valley. The
mid-atlantic high pressure tracks east over the open
atlantic while ridging back across the southeast u.S. And
into the gulf of mexico... With the fl front exiting the
state tonight.

The most active weather is expected between now and around
sunset as the cold front traverses through and a subtle
short wave trough tracks across/down the east coast of fl.

Strong storms have been occurring on the east coast the past
couple of hours and have tracking south. A few of the
storms may drift is across the area... Especially the
interior and southern counties. Expect convection to end as
the front exits to the south and the upper ridge settles in
overhead. Dry and stable conditions dominate Fri although
there will be easterly flow... As the high center
departs... Which will drag some low odds of showers into the
interior in the afternoon.

Mid/long term (Friday night - Thursday)
An upper-level low and associated trough will lift northeast through
the mid-mississippi and ohio valleys Friday night and Saturday, then
weaken as a new upper-level trough moves east from the central
plains on Sunday. This second trough could be just deep enough to
bring a weak cold front to north florida by Monday night or early
Tuesday. In general, models are trending weaker and farther north,
so will not include any mention of rain with this feature. The upper-
level trough will move into the atlantic on Wednesday with a ridge
building over florida and the southeastern states on Thursday.

Temperatures will run several degrees above normal with highs
reaching the middle to even upper 80s each day... Mainly away from
the coast. The airmass will be dry enough to allow temperatures to
fall into the upper 50s to lower 60s each night.

Aviation
23/18z-24/18z. Cold front continues to push south across central fl
with a mixture of vcts/vcsh at all terminals til 00z-01z. Winds ne
to ene and gusty... Diminishing late night... Then becoming easterly
and gusty again late morning.

Marine
Cold front crossing the waters this afternoon will bring
some showers and thunderstorms with robust and gusty winds
filling in behind the front... Small craft exercise caution
and small craft advisory will be in place overnight. High
pressure dominates with easterly flow and evening surges
into the weekend. Then the high settles south with a
relaxing gradient... Allowing winds to veer and diminish.

Fire weather
A weak cold front moves through this afternoon with showers
and thunderstorms. Then high pressure builds with limited
rainfall... A few showers may drift in from the east in the
afternoons. Relative humidity will drop to near but not
reach critical values over the next few days.

Preliminary point temps/pops
Tpa 61 79 62 81 / 10 0 0 10
fmy 62 80 61 83 / 10 10 0 10
gif 59 78 59 83 / 10 0 0 10
srq 61 77 61 79 / 10 0 0 10
bkv 58 78 56 82 / 0 0 0 10
spg 62 78 64 80 / 10 0 0 10

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

Gulf waters... Small craft advisory from 8 pm this evening to 3 am edt
Friday for 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... 09/rude
mid term/long term/decision support... 63/jillson


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PMAF1 12 mi51 min 76°F 69°F1021.8 hPa
MTBF1 12 mi51 min ESE 24 G 28 75°F 1022.6 hPa62°F
42098 13 mi69 min 71°F1 ft
CLBF1 16 mi75 min ENE 8 G 17 82°F 1021 hPa
SAPF1 - 8726520 - St. Petersburg, FL 18 mi51 min ENE 8.9 G 11 78°F 69°F1022 hPa
OPTF1 - 8726607 - Old Port Tampa, FL 25 mi51 min E 15 G 23 78°F 70°F1022.7 hPa
42013 - C10 - Navy-2 26 mi99 min NNW 7.8 G 9.7 68°F 71°F
MCYF1 32 mi51 min 71°F
TSHF1 - 8726667 - East Bay Causeway, FL 33 mi51 min E 11 G 17
VENF1 - Venice, FL 33 mi69 min ENE 15 G 23 79°F 69°F1021 hPa (-0.6)62°F
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 33 mi57 min NE 11 G 16
FHPF1 - Fred Howard Park, FL 45 mi135 min E 14 G 18 79°F 1022.5 hPa

Wind History for C-Cut, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sarasota / Bradenton, Sarasota-Bradenton International Airport, FL11 mi76 minE 18 G 2510.00 miMostly Cloudy and Breezy81°F57°F45%1020.9 hPa
St. Petersburg Whitted Airport, FL18 mi76 minE 1410.00 miFair75°F64°F69%1021.9 hPa

Wind History from SRQ (wind in knots)
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Last 24hrW7W8NW6W7W9W7NE3NE6NE3N4N3CalmNE4NE4NE8E12E10E12NE13E11
G18
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1 day agoW8W8W7W5W3W3W3CalmW3NW3NW3CalmCalmS5CalmW6W8W9W12W12W12W11W9W7
2 days agoN12NW10N6N5N3N3E5N3NE4NE3NE4NE4E4CalmE4SE4S9SW9SW10SW10SW9SW10W10W9

Tide / Current Tables for Anna Maria Key, Bradenton Beach, Tampa Bay, Florida
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Anna Maria Key
Click for Map
Thu -- 03:30 AM EDT     -0.14 feet Low Tide
Thu -- 04:22 AM EDT     Moonrise
Thu -- 07:31 AM EDT     Sunrise
Thu -- 10:49 AM EDT     1.38 feet High Tide
Thu -- 02:49 PM EDT     1.09 feet Low Tide
Thu -- 03:33 PM EDT     Moonset
Thu -- 07:43 PM EDT     Sunset
Thu -- 08:26 PM EDT     1.88 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.40.1-0.1-0.100.30.611.21.31.41.31.21.11.11.21.41.51.71.91.91.71.5

Tide / Current Tables for Tampa Bay Entrance (Egmont Channel), Florida Current
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Tampa Bay Entrance (Egmont Channel)
Click for Map
Thu -- 02:45 AM EDT     -1.37 knots Max Ebb
Thu -- 04:23 AM EDT     Moonrise
Thu -- 06:55 AM EDT     0.00 knots Slack
Thu -- 07:31 AM EDT     Sunrise
Thu -- 10:27 AM EDT     1.37 knots Max Flood
Thu -- 02:21 PM EDT     -0.00 knots Slack
Thu -- 03:33 PM EDT     Moonset
Thu -- 04:01 PM EDT     -0.28 knots Max Ebb
Thu -- 05:55 PM EDT     0.00 knots Slack
Thu -- 07:44 PM EDT     Sunset
Thu -- 09:21 PM EDT     0.78 knots Max Flood
Thu -- 11:50 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.6-1.1-1.3-1.4-1.2-0.9-0.500.61.11.31.310.60.1-0.2-0.3-0.200.30.60.80.70.4

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 (18,4,5,8)
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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.