Tuesday, January21, 2020
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Marine Weather and Tides
St. Pete Beach, 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 6:03PM Tuesday January 21, 2020 3:30 PM EST (20:30 UTC) Moonrise 4:32AMMoonset 3:18PM Illumination 12% 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- 217 Pm Est Tue Jan 21 2020
.small craft advisory in effect through Wednesday morning...
Tonight..North winds 20 to 25 knots. Seas 4 to 6 feet. Bay and inland waters rough.
Wednesday..North winds around 20 knots diminishing to 10 to 15 knots in the late morning and afternoon. Seas 4 to 6 feet. Bay and inland waters choppy.
Wednesday night..Northeast winds around 20 knots. Seas 2 to 3 feet. Bay and inland waters choppy.
Thursday..Northeast winds 15 to 20 knots diminishing to 5 to 10 knots in the late morning and afternoon. Seas 2 to 3 feet. Bay and inland waters a moderate chop.
Thursday night..Southeast winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop.
Friday..Southwest winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop. A chance of showers.
Friday night..Southwest winds around 5 knots then becoming northwest around 10 knots in the late evening and overnight. Seas 2 feet. Bay and inland waters a light chop. A slight chance of showers.
Saturday..North winds 15 to 20 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop.
Saturday night..North winds 15 to 20 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop.
Sunday..North winds 15 to 20 knots diminishing to 5 to 10 knots in the late morning and afternoon. Seas 2 to 3 feet. Bay and inland waters a moderate chop.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 217 Pm Est Tue Jan 21 2020
Synopsis.. Interaction between strong high pressure over the mississippi river valley and an area of low pressure near the bahamas is producing gusty northerly winds across the eastern gulf of mexico. This has warranted the issuance of a sca for all the gulf coast waters and scec for tampa bay and charlotte harbor through late Wednesday morning. Onshore wave action will produce a high risk of rip currents at local beaches through the day. The high pressure moves off the mid-atlantic coast by Thursday which will bring the winds around to the east and will decrease below any sca or scec level to close out the week. Another cold front moves through the coastal waters on Friday producing a chance of showers.


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 211906 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 206 PM EST Tue Jan 21 2020

. FREEZING TEMPERATURES CONTINUE TONIGHT .

DISCUSSION. A highly amplified upper level pattern continues over the eastern half of the CONUS. Sharp ridging extends from Texas northeastward into the western Great Lakes region. Closer to home, a closed upper low has moved into the base of the long wave trough over the GA/SC border. This upper pattern will be the perfect set up to advect more frigid air into the region on Tuesday night into Wednesday morning. The ridge axis moves along the east coast late Wednesday into Thursday, which will start the transition to a warming trend through the end of the week. Another upper low and trough moves south of the Great Lakes by the end of the week and approaches the east coast through the weekend and will lend support to the next cold front expected to cross Florida.

On the surface, a strong high pressure center located over the Mississippi River Valley dominates the weather over the southeast U.S., producing clear skies and much colder weather to the region over the next couple of days. The daytime highs today and Wednesday will top out only in the mid 50's to low 60's. The coldest weather we have seen this winter is expected tonight with temperatures around freezing or below for most of the area. Winds chills will bottom out around 20 to 28 degrees over most of the area tonight, which has warranted the issuance of a Wind Chill Advisory for all of west central and southwest Florida. A Freeze Warning is also in effect for Hernando County northward along the Nature Coast for early Wednesday morning, with a Freeze Watch for all the other counties across west central and southwest Florida.

The next weather system develops through the Mississippi River Valley with a cold front extending into the central Gulf of Mexico late Thursday into Friday. Winds turn southeast, then southwest ahead of this system and will warm things up on Thursday and Friday. This system will move eastward with the cold front moving across Florida on Friday bringing increasing rain chances. Another slight cool down is expected Saturday and continuing into the beginning of next week, then moderating to around average by Tuesday next week.

AVIATION. VFR conditions with gusty northerly winds around 10-15 knots with gusts to 20 knots expected through the period.

MARINE. Interaction between strong high pressure over the Mississippi River Valley and an area of low pressure near the Bahamas is producing gusty northerly winds across the eastern Gulf of Mexico. This has warranted the issuance of a SCA for all the gulf coast waters and SCEC for Tampa Bay and Charlotte Harbor through late Wednesday morning. Onshore wave action will produce a high risk of rip currents at local beaches through the day. The high pressure moves off the mid-Atlantic coast by Thursday which will bring the winds around to the east and will decrease below any SCA or SCEC level to close out the week. Another cold front moves through the coastal waters on Friday producing a chance of showers.

FIRE WEATHER. Colder and drier air has filtered into the area today, with relative humidity percentages dropping into the mid 30s for a few hours in some locations this afternoon. These low RH values combined with gusty winds and high ERC values has warranted the issuance of a Red Flag Warning for portions of west central Florida. Increasing RH values and decreasing winds on Wednesday will prevent any further fire weather concerns through the week.

Preliminary Point Temps/PoPs. TPA 34 61 51 74 / 0 0 0 0 FMY 36 64 52 76 / 0 0 0 10 GIF 34 62 51 74 / 0 0 0 10 SRQ 35 63 51 75 / 0 0 0 0 BKV 29 61 46 74 / 0 0 0 0 SPG 40 61 52 74 / 0 0 0 0

TBW WATCHES/WARNINGS/ADVISORIES. FL . High Rip Current Risk until 8 PM EST this evening for Coastal Charlotte-Coastal Hillsborough-Coastal Lee-Coastal Manatee- Coastal Sarasota-Pinellas.

Wind Chill Advisory from 1 AM to 9 AM EST Wednesday for Coastal Charlotte-Coastal Citrus-Coastal Hernando-Coastal Hillsborough-Coastal Lee-Coastal Levy-Coastal Manatee- Coastal Pasco-Coastal Sarasota-DeSoto-Hardee-Highlands- Inland Charlotte-Inland Citrus-Inland Hernando-Inland Hillsborough-Inland Lee-Inland Levy-Inland Manatee-Inland Pasco-Inland Sarasota-Pinellas-Polk-Sumter.

Red Flag Warning until 7 PM EST this evening for Coastal Hernando-Coastal Hillsborough-Inland Hernando-Inland Hillsborough-Polk.

Freeze Warning from 1 AM to 9 AM EST Wednesday for Coastal Citrus-Coastal Hernando-Coastal Levy-Inland Citrus-Inland Hernando-Inland Levy-Sumter.

Freeze Watch from 1 AM EST Wednesday through Wednesday morning for DeSoto-Hardee-Inland Hillsborough-Inland Manatee-Inland Pasco-Inland Sarasota-Polk.

Gulf waters . Small Craft Advisory until 10 AM EST Wednesday for Coastal waters from Bonita Beach to Englewood FL out 20 NM-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 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.



DISCUSSION/AVIATION/MARINE/FIRE WEATHER . 74/Wynn DECISION SUPPORT . 69/Close


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
42098 7 mi30 min 66°F5 ft
CLBF1 10 mi96 min NNW 7 G 14 51°F 1022.1 hPa
MTBF1 14 mi42 min N 20 G 25 1022.6 hPa
SAPF1 - 8726520 - St. Petersburg, FL 14 mi48 min N 11 G 17 51°F 67°F1022.2 hPa
PMAF1 16 mi42 min 49°F 58°F1022.1 hPa
GCTF1 19 mi42 min 1022.1 hPa
OPTF1 - 8726607 - Old Port Tampa, FL 20 mi42 min NNW 20 G 24 65°F1022.5 hPa
CWBF1 - 8726724 - Clearwater Beach, FL 21 mi48 min NNW 23 G 27 48°F 62°F1023.2 hPa
MCYF1 28 mi42 min 68°F
TSHF1 - 8726667 - East Bay Causeway, FL 29 mi48 min NW 9.9 G 18
FHPF1 - Fred Howard Park, FL 33 mi96 min N 14 G 17 48°F 1024.3 hPa
VENF1 - Venice, FL 47 mi30 min NNW 23 G 26 52°F 66°F1021.5 hPa (-2.1)38°F
42022 48 mi60 min N 21 G 27 53°F 1023.8 hPa

Wind History for C-Cut, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Albert Whitted Airport, FL14 mi97 minN 19 G 2510.00 miFair and Breezy51°F32°F48%1022.2 hPa
St. Petersburg/Clearwater Airport, FL18 mi37 minN 11 G 2210.00 miFair54°F32°F43%1022.7 hPa
Macdill Air Force Base, Fl., FL22 mi94 minN 14 G 2110.00 miFair54°F24°F33%1022.3 hPa

Link to 5 minute data for KSPG

Wind History from SPG (wind in knots)
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Last 24hrNW14NW10N10N8N8N10N11N12N13NE14N13N14N12N9N9N10N9N10
G19
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2 days agoSE7SE4SW4--S3SE3S7SE10S11S10S9S8S8S7S6S7S7S9S8S9S9S12
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Tide / Current Tables for Pass-a-Grille Beach, Florida
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Pass-a-Grille Beach
Click for Map
Tue -- 04:32 AM EST     Moonrise
Tue -- 04:55 AM EST     -0.58 feet Low Tide
Tue -- 07:21 AM EST     Sunrise
Tue -- 01:13 PM EST     0.99 feet High Tide
Tue -- 02:31 PM EST     0.98 feet Low Tide
Tue -- 03:17 PM EST     Moonset
Tue -- 06:02 PM EST     Sunset
Tue -- 09:09 PM EST     1.89 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.60.1-0.3-0.5-0.6-0.5-0.30.10.40.60.80.91111.11.21.41.61.81.91.81.7

Tide / Current Tables for Tampa Bay Entrance (Egmont Channel), Florida Current
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Tampa Bay Entrance (Egmont Channel)
Click for Map
Tue -- 02:37 AM EST     -2.01 knots Max Ebb
Tue -- 04:32 AM EST     Moonrise
Tue -- 07:10 AM EST     0.00 knots Slack
Tue -- 07:21 AM EST     Sunrise
Tue -- 10:24 AM EST     1.68 knots Max Flood
Tue -- 03:18 PM EST     Moonset
Tue -- 03:33 PM EST     0.14 knots Min Flood
Tue -- 06:02 PM EST     Sunset
Tue -- 08:38 PM EST     1.02 knots Max Flood
Tue -- 11:16 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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-1.1-1.6-2-2-1.8-1.4-0.8-0.10.61.31.61.61.30.80.40.20.20.30.50.8110.70.2

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 (15,3,4,5)
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Ground Weather Radar Station Tampa Bay Area, FL
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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.