Monday, May29, 2017 L-36.com


Marine Weather and Tides
Belle Fontaine, AL

Version 3.4
What's New / NOTES
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
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.

Sunrise 5:49AMSunset 7:50PM Monday May 29, 2017 12:11 PM CDT (17:11 UTC) Moonrise 9:54AMMoonset 11:47PM Illumination 18% Phase: Waxing Crescent; Moon at 4 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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GMZ630 Northern Mobile Bay- 1015 Am Cdt Mon May 29 2017
Rest of today..Southwest winds 8 to 13 knots. A light chop. Scattered showers and Thunderstorms.
Tonight..Southwest winds 8 to 13 knots. A light chop becoming smooth to a light chop. Chance of showers and Thunderstorms.
Tuesday..Southwest winds 3 to 8 knots becoming east 5 to 10 knots. Smooth to a light chop. Chance of showers and Thunderstorms.
Tuesday night..Southeast winds 5 to 10 knots becoming east 3 to 8 knots. Smooth to a light chop. Chance of showers and Thunderstorms.
Wednesday..East winds 3 to 8 knots becoming southeast. Smooth to a light chop. Chance of showers and Thunderstorms.
Wednesday night..South winds 3 to 8 knots becoming light. Smooth to a light chop becoming smooth. Slight chance of showers and Thunderstorms in the evening.
Thursday..Southeast winds 3 to 8 knots. Smooth to a light chop. Slight chance of showers and Thunderstorms.
Thursday night..South winds 3 to 8 knots. Smooth to a light chop. Slight chance of showers and Thunderstorms.
Friday..South winds 8 to 13 knots. A light chop. Chance of showers and Thunderstorms.
Friday night..South winds 5 to 10 knots. Smooth to a light chop. Slight chance of showers and Thunderstorms.
GMZ600 Synopsis For Destin Fl To Pascagoula Ms Out 60 Nm Including Mobile Bay- 1015 Am Cdt Mon May 29 2017
Synopsis..High pressure will continue to weaken and drift east over the north central and eastern gulf through midweek in response to an upper level system and weakening frontal boundary approaching from the west and northwest. Showers and Thunderstorms are expected with this pattern with better coverage occurring late tonight through Tuesday morning as the weak frontal boundary nears the coast and stalls. A light southerly flow will become better established late Wednesday through late in the week as a weak surface ridge of high pressure rebuilds over the north central gulf.

7 Day Forecast for Marine Location Near Belle Fontaine, AL
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location: 30.57, -88.09     debug


Area Discussion for - Mobile/Pensacola, FL
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Fxus64 kmob 291627 aaa
afdmob
area forecast discussion... Updated
national weather service mobile al
1127 am cdt Mon may 29 2017

Discussion See updated information for land and marine areas below.

Update Did a quick update to the current zone forecast mainly
to lower pops a tad for this afternoon and this evening. Current
hi-res data and radar trends to the west and south support this
reasoning showing less coverage than earlier anticipated. We will
keep high end chance pops in the forecast for all land areas for
the rest of today and this evening followed by better coverage
over northern sections of the forecast area after midnight tonight
continuing through Tue morning. 32 ee

Marine Lowered rain chances over the marine area for this
afternoon and this evening. Also made a few tweaks to the winds
through Tuesday afternoon mostly for better consistency with
surrounding wfos and afternoon seabreeze effects. 32 ee

Prev discussion issued 749 am cdt Mon may 29 2017
discussion... See updated information for land and marine areas below.

Update...

initial convective complex continues moving east-northeastward
across parts of south-central alabama and the florida panhandle.

Mesoanalysis data indicates decreasing amounts of parcel buoyancy
available, with 1000-1500 j kg now noted near the coastal counties
in our forecast area. Precipitation probabilities have been
increased downstream to account for this initial convective
complex.

Area radars show another convective complex moving toward our area
from southeast louisiana. Infrared satellite imagery indicates
warming cloud tops, which suggests a decreasing convective trend.

Radar trends show this as well. This trend is expected to
generally continue through mid-morning, although I made no
adjustments to precipitation probabilities past 10 am at this
time.

Updated text products will be issued shortly. Butts
marine...

scattered showers and thunderstorms continue moving across the
marine area this morning. The stronger thunderstorms will be
capable of producing wind gusts around 30 knots along with locally
choppy seas and torrential rainfall.

Observational platforms over the northern gulf indicate
significant wave heights over the gulf of mexico waters are
running a skosh higher than what's indicated in the current
forecast products. Current wind speed forecast appears to be in
decent agreement with data from available observational platforms.

Updated text product will be issued shortly. Butts
prev discussion... Issued 651 am cdt Mon may 29 2017
discussion... Updated for latest aviation discussion below.

Aviation...

12z issuance... MVFR toVFR conditions can be expected through
much of the day scattered showers and storms near the terminals by
the afternoon. Ifr to MVFR conditions can be expected in and
around storms. 13
prev discussion... Issued 542 am cdt Mon may 29 2017
near term now through Monday night ...

a large upper-level storm system spinning over southern ontario this
morning continues to result in broad troughiness over much of the
eastern u.S. The associated cold front remains analyzed from middle
tennessee into the ARKLATEX early this morning.

Showers and thunderstorms have already been seen this morning close
to home, initializing along an outflow boundary (or boundaries) from
previous convection. Mesoscale analysis indicates a very unstable
airmass in place across the northern gulf coast, with MLCAPE values
between 1500 and 2000 j kg common. Mid-level lapse rates and
effective bulk shear values are marginal, however, with values 6.5
degrees c km and 25 knots, respectively. Some stabilization is
expected across the region as this complex of storms traverses the
region. The big question is to what degree can we recover for the
afternoon.

I think convection today will likely be driven by largely mesoscale
processes. Sure, synoptic scale forcing is enhanced given the
proximity of the surface front. The upper jet, though, is forecast
to remain to our north with a minimum of cross isobaric flow between
the upper trough and the surface front. That said, I think the front
(and the best source of large scale forcing shear) will likely
remain to our north west tonight.

What we will have is a "soupy" airmass, with precipitable water
values between 1.75 and 2 inches over the region. Forecast soundings
indicate some airmass recovery is possible this afternoon, with
maximum MLCAPE values between 1500 and 2000 j kg possible. Short
version - ample moisture and instability will be present, as will be
plenty of mesoscale boundaries and disturbances in the upper
atmosphere moving through the region.

The ongoing convection should take full advantage of the
thermodynamic environment through mid-morning, with additional
development possible across southeast mississippi and adjacent
areas of interior southwest alabama. Expect the areal coverage of
this convection to diminish by late morning as instability is
used. There may be a break in the convection late morning through
early to mid- afternoon, before more showers and thunderstorms
develop across southeast mississippi with the approach of the next
upper atmosphere disturbance. Timing of precipitation
probabilities have been based on this train of thought.

There are lots of flies hanging out in the ointment today, so
updates will likely have to be made as the event evolves. Locally
heavy downpours will be possible in the stronger thunderstorms.

Short term Tuesday through Wednesday night ...

minimal cross isobaric flow should be provided by the broad upper-
level trough through Tuesday. This should result in the surface
front remaining nearly stationary, generally waffling somewhere
either side of the ih-20 corridor.

The atmosphere across our region will remain quite moist.

Precipitable water values should remain between 2 and 3 standard
deviations above climatological means, with amounts above 1.75
inches expected. Instability should not be as great as today, but
mlcape values around 1000 j kg may be seen. Weaker perturbations
moving across our area will interact with this airmass to result in
additional periods of showers and thunderstorms over the region
through Tuesday. Expect the greatest convective coverage to remain
generally along and north west of ih-65, where better moisture
transport will be seen.

Additional upper-level energy is expected to rotate southward across
the upper midwest Tuesday afternoon and evening, helping to amplify
the upper-level trough. This should provide enough momentum to help
push the surface front southward into our area by Wednesday. Despite
the loss of daytime heating, increased synoptic scale forcing should
help maintain a scattered coverage of showers and thunderstorms over
much of the region Tuesday night.

The front should gradually weaken as it sags toward the coast
sometime Wednesday night. I've kept convective probabilities above
seasonal values through mid-week due to the presence of the
weakening front. We'll likely see a stronger diurnal signal by
Wednesday as well, although i've refrained from indicating this in
the forecast at this time.

Long term Thursday through Sunday ...

broad upper trough axis is forecast to shift east across quebec
Thursday. In its wake, weak ridging both at the surface and aloft
will attempt to rebuild across the region as the old surface front
gradually dissipates. With the loss of significant synoptic scale
forcing, expect scattered afternoon convection to exhibit a strong
diurnal signal with the greatest coverage in the afternoon and early
evening.

Low-level flow veers to a more southerly direction Friday night-
Saturday, just in time for another shortwave trough to move through
the plains. This feature will likely amplify over the eastern u.S.

By the end of the weekend and aid in bringing another cold front
toward the mid-south. Boundary layer moisture increases to nearly 3
standard deviations above climatological values, and when combined
with ample instability, will likely result in an increase in
convective coverage for the upcoming weekend.

Marine...

light to moderate onshore flow is expected over the marine area
through tonight, along with scattered showers and thunderstorms. A
weakening cold front is forecast to enter the marine area by Tuesday
night and become stationary through mid-week. As the boundary
becomes more diffuse, a decreased shower thunderstorm coverage will
likely be seen for the end of the week before showers and
thunderstorms increasing in coverage again next weekend. Winds and
seas will be higher in vicinity of any convection.

Mob watches warnings advisories
Al... None.

Fl... None.

Ms... None.

Gm... None.

This product is also available on the web at:
http: weather.Gov mob


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MCGA1 - 8736897 - Coast Guard Sector Mobile, AL 6 mi41 min S 1.9 G 4.1 79°F 79°F1018.3 hPa
PTOA1 8 mi41 min 80°F 74°F
OBLA1 - 8737048 - Mobile State Docks, AL 10 mi41 min 80°F 78°F1017.7 hPa
MBLA1 - Middle Bay Light, AL 10 mi71 min S 6 79°F 1018.3 hPa (+1.4)
MHPA1 - Meaher Park, AL 11 mi41 min SW 4.1 78°F 1018 hPa
WBYA1 18 mi41 min 79°F
CRTA1 - Cedar Point, AL 18 mi41 min SW 7 78°F 1017.6 hPa
DPIA1 - Dauphin Island, AL 22 mi71 min WSW 6 G 8 80°F 1017.6 hPa (+0.9)
GDXM6 - Grand Bay Reserve, MS 23 mi86 min WSW 7 78°F 1019 hPa73°F
KATA1 - Katrina Cut, AL 23 mi71 min WSW 8 78°F 1018 hPa (+1.0)
FMOA1 - 8734673 - Fort Morgan, AL 24 mi41 min W 8 G 8.9 79°F
RARM6 - 8741094 - Range A rear, Pascagoula, MS 27 mi41 min SSW 4.1 G 6 80°F 1017 hPa
ULAM6 - 8741041 - Dock E. Port of Pascagoula, MS 27 mi41 min 79°F
DKCM6 - 8741501 - Dock C, Pascagoula, MS 29 mi41 min S 6 G 6 78°F 1017.4 hPa
PNLM6 - 8741533 - Pascagoula NOAA Lab, MS 29 mi41 min 77°F
PTBM6 - 8741003 - Petit Bois Island, MS 33 mi41 min SSW 5.1 G 6 79°F 1018.3 hPa
PPTA1 35 mi41 min S 5.1 82°F 1018.3 hPa
42012 - Orange Beach AL Buoy 45 mi81 min SSW 9.7 G 12 79°F 79°F3 ft1017.6 hPa (+0.9)73°F
42067 - USM3M02 47 mi151 min W 9.7 G 12 78°F 2 ft1018.1 hPa73°F
PCLF1 - 8729840 - Pensacola, FL 48 mi41 min 82°F 80°F1018.1 hPa

Wind History for Coast Guard Sector Mobile, AL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mobile, Mobile Downtown Airport, AL5 mi78 minN 010.00 miA Few Clouds79°F75°F88%1018.3 hPa
Mobile, Mobile Regional Airport, AL11 mi75 minSW 710.00 miLight Rain78°F73°F85%1018.2 hPa
Sonny Callahan Airport, AL14 mi76 minS 410.00 miFair79°F77°F94%1017.9 hPa

Wind History from BFM (wind in knots)
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Last 24hrS7E8CalmSW535S9
G20
S7S7SW5N3CalmCalmNE5NE4E4SE4E12SE11SE76SW3CalmSE6
1 day agoSE11SE10S9S12
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SW5S5S453S4S3SW6SW34CalmCalmCalmCalm3SW4SW4S4
2 days agoSE11SE10SE10S8SE11S8S7S4S3S3S5S7S55CalmCalmCalmCalmCalmCalm--SE5SE7SE9

Tide / Current Tables for Fowl River, Mobile Bay Entrance, Alabama
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Fowl River
Click for Map
Mon -- 02:34 AM CDT     -0.26 feet Low Tide
Mon -- 05:51 AM CDT     Sunrise
Mon -- 09:54 AM CDT     Moonrise
Mon -- 03:15 PM CDT     1.99 feet High Tide
Mon -- 07:48 PM CDT     Sunset
Mon -- 11:46 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.1-0.2-0.2-0.2-0.2-00.20.40.70.91.11.31.51.71.9221.91.71.41.10.90.60.3

Tide / Current Tables for Mobile Bay Entrance, Alabama Current
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Mobile Bay Entrance
Click for Map
Mon -- 02:01 AM CDT     0.00 knots Slack
Mon -- 05:51 AM CDT     Sunrise
Mon -- 08:29 AM CDT     2.44 knots Max Flood
Mon -- 09:54 AM CDT     Moonrise
Mon -- 02:32 PM CDT     -0.00 knots Slack
Mon -- 07:47 PM CDT     Sunset
Mon -- 08:24 PM CDT     -2.37 knots Max Ebb
Mon -- 11:46 PM CDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.2-0.6-00.61.11.622.32.42.42.321.510.3-0.3-0.9-1.5-1.9-2.2-2.4-2.3-2.2-1.9

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 Mobile/Pensacola, FL (13,3,4,5)
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Ground Weather Radar Station Mobile, AL
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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.