Thursday, March21, 2019 L-36.com


Marine Weather and Tides
Upper Grand Lagoon, FL

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:43AMSunset 6:55PM Thursday March 21, 2019 4:45 PM CDT (21:45 UTC) Moonrise 7:51PMMoonset 7:24AM Illumination 99% Phase: Waning Gibbous; Moon at 16 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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GMZ750 Coastal Waters From Mexico Beach To Okaloosa Walton County Line Fl Out 20 Nm- Coastal Waters From Mexico Beach To Apalachicola Fl Out 20 Nm- Coastal Waters From Ochlockonee River To Apalachicola Fl Out To 20 Nm- Waters From Mexico Beach To Okaloosa Walton County Line Fl From 20 To 60 Nm- Waters From Apalachicola To Mexico Beach Fl From 20 To 60 Nm- Waters From Suwannee River To Apalachicola Fl From 20 To 60 Nm- 247 Pm Edt Thu Mar 21 2019 /147 Pm Cdt Thu Mar 21 2019/
.small craft exercise caution...
Tonight..Northwest winds 15 to 20 knots. Seas 2 to 4 feet. Dominant period 4 seconds. Protected waters a moderate chop.
Friday..Northwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Protected waters a light chop.
Friday night..Northwest winds 10 to 15 knots becoming north 10 to 15 knots early in the morning. Seas 1 to 2 feet. Dominant period 4 seconds. Protected waters a light chop.
Saturday..East winds 10 knots becoming southeast 5 to 10 knots late in the afternoon. Seas 1 to 2 feet. Dominant period 3 seconds. Protected waters a light chop.
Saturday night..Southeast winds 5 to 10 knots becoming east 10 knots in the late evening. Seas 1 foot or less. Protected waters a light chop.
Sunday..Southeast winds 10 to 15 knots. Seas 1 to 2 feet. Protected waters a light chop.
Sunday night..South winds 5 to 10 knots. Seas 1 to 2 feet. Protected waters mostly smooth.
Monday..Southwest winds 10 knots. Seas 1 to 2 feet. Protected waters a light chop.
Monday night..Northwest winds 10 to 15 knots. Seas 2 to 3 feet. Protected waters a light chop. Slight chance of showers and Thunderstorms.
Tuesday..Northwest winds 15 knots. Seas 2 to 4 feet. Protected waters a moderate chop.
GMZ700 Synopsis For The Suwannee River To Okaloosa-walton County Line Out To 60 Nm 247 Pm Edt Thu Mar 21 2019
Synopsis.. Conditions will be near advisory levels this evening and early tonight in a brisk northwest flow. Small craft should exercise caution. Winds and seas will slowly subside tonight into early Friday. From late Friday into through Monday tranquil boating conditions are expected, with winds less than 15 knots and seas around or below 2 feet.


7 Day Forecast for Marine Location Near Upper Grand Lagoon, FL
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location: 30.17, -85.76     debug


Area Discussion for -
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Fxus62 ktae 211915
afdtae
area forecast discussion
national weather service tallahassee fl
315 pm edt Thu mar 21 2019

Near term [through today]
Continued dry weather with low temperatures remaining several
degrees below normal.

Some haze is possible this afternoon, especially east of the
flint and apalachicola rivers, due to prescribed burns. However,
there is sufficient mixing and wind such that it should not
reduce visibility significantly in any one location, compared
to yesterday.

A deep, dry northwest flow continues tonight. Clear skies will
prevail and winds will gradually diminish. Do not expect winds to
go completely calm, as a pressure gradient is maintained, but
subsiding to below 10 mph. Low temperatures will continue below
average, and have went a few degrees below the guidance, which
remains biased warm. Expect lows in the upper 30s to low 40s,
except mid to upper 40s closer to the gulf coast.

Short term [tonight through Saturday]
A very pleasant stretch of weather with moderating temperatures.

A mid-level ridge will gradually center over the mississippi
valley with an increasingly anticyclonic flow aloft building
high pressure at the surface. Subsidence will maintain a dry
column, with only some diurnal, fair weather clouds. No rain
during this period. Temperatures moderate during this period,
but still slightly below normal, owing more to chilly nights.

There is some uncertainty with high temperatures closer to
the gulf coast on Saturday, where a seabreeze may develop.

Long term [Saturday night through Thursday]
Dry thru this weekend with increasing precip chances thereafter.

The flow will gradually veer to the southwest Saturday night as a
broad long wave trough extends from the great plains into hudson's
bay. This pattern favors increasing clouds by late Sunday and
Monday. A stronger shortwave impulse will amplify the trough as it
rounds the base from the great plains toward florida early next
week. Wpc takes low pressure across north georgia by Tue morning
with a cold front on our door step at that time. This still favors
greater moisture and lift remaining just northwest of the area,
where the extended cips analogs keep heavier precip. Dry weather
through Sunday night with chances for precip increasing on Monday,
and persisting thru Tuesday night, especially north of i-10. There
is also a slight chance of thunder. A return to dry weather for
Wednesday and Thursday. Temperatures slightly above average
thru Tuesday, then slightly below average thereafter.

Aviation
[through 18z Friday]
vfr conditions at all terminals through the TAF period, with the
only exception being haze possible late tonight early Fri morning,
but confidence not high enough to include in taf. Winds subside
tonight out of the northwest.

Marine
Conditions will be near advisory levels this evening and early
tonight in a brisk northwest flow. Small craft should exercise
caution. Winds and seas will slowly subside tonight into early
Friday. From late Friday into through Monday tranquil boating
conditions are expected, with winds less than 15 knots and seas
around or below 2 feet.

Fire weather
Red flag warnings will continue through this evening across much
of north florida. While rhs will remain critically dry and ercs
above 28 into the weekend, 20 foot winds will remain below 15
mph, precluding red flag conditions. Fog is not expected over the
next couple of days.

Hydrology
No rain is expected at least until Monday night. Even then, less
than half an inch of rain is forecast. Flooding is not expected.

Spotter information statement
Spotter activation is not requested. However, spotters are always
encouraged to safely report significant weather conditions when they
occur by calling the office or tweeting us @nwstallahassee.

Preliminary point temps pops
Tallahassee 45 72 44 75 47 0 0 0 0 0
panama city 50 67 50 70 52 0 0 0 0 0
dothan 43 69 44 71 47 0 0 0 0 0
albany 43 69 44 71 46 0 0 0 0 0
valdosta 44 69 43 73 46 0 0 0 0 0
cross city 47 71 45 76 48 0 0 0 0 0
apalachicola 50 68 50 70 53 0 0 0 0 0

Tae watches warnings advisories
Fl... Red flag warning until 7 pm edt 6 pm cdt this evening for
calhoun-central walton-coastal franklin-coastal jefferson-
coastal wakulla-gadsden-holmes-inland bay-inland dixie-
inland franklin-inland gulf-inland jefferson-inland taylor-
inland wakulla-jackson-lafayette-leon-liberty-madison-north
walton-washington.

Ga... None.

Al... None.

Gm... None.

Near term... Lf
short term... Lf
long term... Lf
aviation... Lf
marine... Lf
fire weather... Pullin
hydrology... Ln


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PACF1 - 8729108 - Panama City, FL 5 mi28 min WSW 18 G 22 62°F 64°F1015.5 hPa
PCBF1 7 mi28 min W 20 G 23 63°F 65°F1015.4 hPa
APCF1 - 8728690 - Apalachicola, FL 52 mi28 min WNW 8.9 G 18 65°F 64°F1014.7 hPa

Wind History for Panama City, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Panama City - Northwest Florida Beaches International Airport, FL13 mi53 minWNW 13 G 1910.00 miFair70°F37°F30%1015.7 hPa

Wind History from PAM (wind in knots)
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Last 24hrNE11E10
G15
NE7N8N5N4NW4W11W11W7NW5NW5NW3CalmCalmCalmCalmNW6NW4NW3CalmNW5NW8NW11
1 day agoNE9----N7N8N6N8N7N5NE4NE5NE5NE5NE4NE4E4E4NE4E6E6NE4NE6NE7E7
2 days agoNE7NE9
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NE10N7NE9NE8NE11

Tide / Current Tables for Alligator Bayou, St. Andrew 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 Panama City Beach, Florida
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Panama City Beach
Click for Map
Thu -- 04:46 AM CDT     0.23 feet Low Tide
Thu -- 06:46 AM CDT     Sunrise
Thu -- 07:24 AM CDT     Moonset
Thu -- 08:07 AM CDT     0.37 feet High Tide
Thu -- 09:42 AM CDT     0.35 feet Low Tide
Thu -- 12:00 PM CDT     0.42 feet High Tide
Thu -- 03:59 PM CDT     0.04 feet Low Tide
Thu -- 06:55 PM CDT     Sunset
Thu -- 07:51 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.90.80.60.40.30.20.30.30.40.40.40.40.40.40.20.100.10.20.40.50.60.60.7

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (17,4,5,8)
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Ground Weather Radar Station Northwest Florida
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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.