Monday, January20, 2020
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Marine Weather and Tides
Gulfport, FL

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:20AMSunset 6:02PM Monday January 20, 2020 7:36 AM EST (12:36 UTC) Moonrise 3:32AMMoonset 2:29PM Illumination 22% Phase: Waning Crescent; Moon at 25 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- 332 Am Est Mon Jan 20 2020
.small craft exercise caution...
Today..North winds around 20 knots diminishing to 10 to 15 knots in the afternoon. Bay and inland waters choppy.
Tonight..North winds around 15 knots. Bay and inland waters a moderate chop.
Tuesday..North winds around 15 knots. Bay and inland waters a moderate chop.
Tuesday night..North winds around 20 knots. Bay and inland waters choppy.
Wednesday..North winds around 15 knots. Bay and inland waters a moderate chop.
Wednesday night..Northeast winds around 15 knots diminishing to 5 to 10 knots after midnight. Bay and inland waters a moderate chop.
Thursday..East winds around 10 knots. Bay and inland waters a light chop.
Thursday night..Southeast winds around 10 knots. Bay and inland waters a light chop.
Friday..Southeast winds around 10 knots then becoming southwest in the afternoon. Bay and inland waters a light chop. A slight chance of showers in the morning, then a chance of showers in the afternoon.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 332 Am Est Mon Jan 20 2020
Synopsis.. Breezy north winds are continuing today in the wake of the recent cold front, with advisory to cautionary conditions continuing today through at least Wednesday. High pressure will build in from the north by mid week, allowing wind speeds to subside by Thursday. Another front will approach the area Thursday night and Friday, resulting in increased chances of showers.


7 Day Forecast for Marine Location Near Gulfport, FL
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location: 27.74, -82.69     debug


Area Discussion for - Tampa Bay, FL
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FXUS62 KTBW 201126 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 626 AM EST Mon Jan 20 2020

AVIATION. Some brief periods of MVFR ceilings possible for the next hour, then becoming VFR for the remainder of the period. Winds will remain out of the north around 8-12 knots through the day. No other aviation impacts expected.

Prev Discussion. /issued 243 AM EST Mon Jan 20 2020/

.MUCH COOLER CONDITIONS EXPECTED THROUGH WEDNESDAY.

DISCUSSION . The forecast for the next few days will be dominated by strong cold air advection in the wake of the recent cold front, which will be reinforced periodically as a couple of strong shortwaves dig into the southeastern US. As this cooler and drier air filters south into the Florida Peninsula today, clouds will gradually clear out by this afternoon, but the breezy north winds will prevent temperatures from breaking out of the 50s over the Nature Coast, although southwest Florida should still warm up to the mid to upper 60s. Although these breezy winds will be out of the north, onshore wave action will create a high risk of rip currents at area beaches throughout the day.

The cold air advection will continue overnight, with a Freeze Warning in effect for Levy County early Tuesday morning. Farther south, isolated spots could still touch freezing briefly, although most areas should only drop into the mid to upper 30s, with some 40s along the coast. Apparent temperatures will drop into the 20s over the Nature Coast counties and low to mid 30s as far south as Charlotte County, but wind speeds are not forecast to be high enough to warrant a Wind Chill Advisory at this time.

The cold air advection will continue on Tuesday in spite of some sunny skies, with highs generally topping out in the 50s and low 60s. Tuesday night is forecast to be the coldest night of the week, with a Freeze Watch in effect for Levy, Citrus, Hernando, and Sumter Counties. Farther south, wind speeds will be a little higher than tonight, so a Wind Chill Advisory may end up being needed for much of the area.

Temperatures will start to moderate Wednesday and Thursday as winds turn to easterly. Winds will continue to veer to southerly Thursday night and Friday ahead of the next front developing over the western Gulf of Mexico, with highs on Friday expected to be back above normal, generally reaching into the mid to upper 70s. The southerly low level flow will also allow for building atmospheric moisture, leading to some isolated to scattered showers Thursday night through Friday night. The cold front is expected to pass through the area on Saturday, resulting in another cool down, although this will be a much more mild cold air mass than the current event, and temperatures will not approach freezing.

AVIATION . MVFR and occasional IFR ceilings will gradually clear out of the area from north to south during the rest of the overnight and early morning hours. VFR conditions will then generally hold through the rest of the day under breezy north and northwest winds.

MARINE . High pressure will build in to the eastern Gulf of Mexico from the northwest today through Wednesday in the wake of the recent cold front, setting up breezy northerly winds. A Small Craft Advisory is in effect for the Gulf waters north of Englewood through 10 AM this morning, with exercise caution conditions elsewhere. Winds will subside slightly by late morning, but will remain around exercise caution thresholds into Tuesday. Wind speeds will increase again over the eastern Gulf of Mexico Tuesday afternoon and evening, likely resulting in another Small Craft Advisory.

Winds will gradually subside Wednesday morning through Thursday as the ridge of high pressure settles in to the north of the waters and winds turn to easterly. Thursday night and Friday, winds will turn to southerly ahead of an approaching cold front, resulting in increasing chances of showers.

FIRE WEATHER . Cooler and drier air will fill into the area behind the front today, with relative humidity percentages dropping into the mid 30s for a few hours in some locations this afternoon and again Tuesday afternoon. However, wind speeds are not expected to be high enough to trigger Red Flag Warnings.

Preliminary Point Temps/PoPs. TPA 61 41 57 35 / 0 0 0 0 FMY 68 44 63 38 / 0 0 0 0 GIF 63 40 58 35 / 0 0 0 0 SRQ 63 41 59 36 / 0 0 0 0 BKV 60 32 56 29 / 0 0 0 0 SPG 60 46 57 40 / 0 0 0 0

TBW WATCHES/WARNINGS/ADVISORIES. FL . Freeze Watch from late Tuesday night through Wednesday morning for Coastal Citrus-Coastal Hernando-Coastal Levy-Inland Citrus-Inland Hernando-Inland Levy-Sumter.

High Rip Current Risk through this evening for Coastal Charlotte- Coastal Hillsborough-Coastal Lee-Coastal Manatee-Coastal Sarasota-Pinellas.

Freeze Warning from 3 AM to 9 AM EST Tuesday for Coastal Levy- Inland Levy.

Gulf waters . Small Craft Advisory until 10 AM EST this morning for Coastal waters from Englewood to Tarpon Springs FL out 20 NM- Coastal waters from Tarpon Springs to Suwannee River FL out 20 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.



AVIATION . 74/Wynn DECISION SUPPORT . 69/Close


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CLBF1 0 mi102 min NNE 4.1 G 8.9 49°F 1020.2 hPa
SAPF1 - 8726520 - St. Petersburg, FL 4 mi54 min N 7 G 14 50°F 69°F1021.6 hPa
MTBF1 7 mi84 min NNE 21 G 26 53°F 1021.2 hPa36°F
GCTF1 9 mi54 min 50°F 1021.7 hPa30°F
PMAF1 10 mi48 min 51°F 63°F1021.3 hPa
OPTF1 - 8726607 - Old Port Tampa, FL 11 mi48 min N 16 G 23 49°F 68°F1021.8 hPa
42098 16 mi36 min 68°F5 ft
CWBF1 - 8726724 - Clearwater Beach, FL 18 mi54 min NNE 13 G 19 50°F 68°F1022.3 hPa
MCYF1 18 mi48 min 70°F
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 19 mi54 min N 8.9 G 13
TSHF1 - 8726667 - East Bay Causeway, FL 19 mi54 min N 6 G 14
FHPF1 - Fred Howard Park, FL 29 mi102 min NNE 12 G 14 49°F 1022.1 hPa
VENF1 - Venice, FL 48 mi36 min N 14 G 17 54°F 69°F1020.6 hPa (+1.8)41°F

Wind History for St. Petersburg, FL
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Albert Whitted Airport, FL4 mi43 minN 16 G 1910.00 miFair51°F35°F54%1021.4 hPa
St. Petersburg/Clearwater Airport, FL12 mi43 minN 1010.00 miFair50°F32°F50%1022.1 hPa
Tampa, Tampa International Airport, FL18 mi43 minN 14 G 1810.00 miA Few Clouds47°F26°F44%1022.3 hPa
Tampa, Peter O Knight Airport, FL18 mi41 minNNE 6 G 1410.00 miOvercast48°F33°F58%1022.3 hPa

Link to 5 minute data for KSPG

Wind History from SPG (wind in knots)
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1 day agoE13E10E6SE12SE12SE9SE7SE7SE7SE4SW4--S3SE3S7SE10S11S10S9S8S8S7S6S7
2 days agoNE17NE18NE17E18E15E14E15E14E20E17E20E18E22E20
G26
E21E20E18E18E17E18E16E14E17E14

Tide / Current Tables for Gulfport, Boca Ciega Bay, Florida
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Port Manatee, Tampa Bay, Florida Current
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Port Manatee
Click for Map
Mon -- 02:24 AM EST     -1.14 knots Max Ebb
Mon -- 03:30 AM EST     Moonrise
Mon -- 06:22 AM EST     0.00 knots Slack
Mon -- 07:21 AM EST     Sunrise
Mon -- 09:50 AM EST     0.88 knots Max Flood
Mon -- 02:29 PM EST     Moonset
Mon -- 03:10 PM EST     0.12 knots Min Flood
Mon -- 06:01 PM EST     Sunset
Mon -- 07:33 PM EST     0.62 knots Max Flood
Mon -- 10:49 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.8-1-1.1-1.1-0.9-0.6-0.20.20.60.80.90.80.60.30.20.10.20.30.50.60.60.50.3-0.1

Weather Map
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wmap_A
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Tampa Bay, FL (7,2,3,4)
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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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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 numerous 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.