Sunday, September24, 2017 L-36.com


Marine Weather and Tides
Brook Highland, AL

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 6:36AMSunset 6:41PM Sunday September 24, 2017 9:34 PM CDT (02:34 UTC) Moonrise 10:40AMMoonset 9:42PM Illumination 20% 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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7 Day Forecast for Marine Location Near Brook Highland, AL
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location: 33.45, -86.71     debug


Area Discussion for - Birmingham, AL
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Fxus64 kbmx 250000
afdbmx
area forecast discussion
national weather service birmingham al
700 pm cdt Sun sep 24 2017

Update
For 00z aviation.

Short term
Updates made this morning appear to still be on track as we are
beginning to see isolated showers in the northeast. Will hold onto
activity through 10 pm, but it will likely be done earlier due to
the isolated nature this afternoon. This isolated nature is due to
2 reason. The first we are seeing a somewhat drier airmass working
into the region from the east. Secondly we are being cutoff from
the rich airmass with all of the convection associated with a meso
low near the alabama coastline. This low has also increased the
dry airmass as a general subsidence zone has set over the
southeast. There may be some patchy fog again tonight, but again
will be generally thin and should not cause any major issues.

16

Long term
Monday through Saturday.

By Monday, we can finally say goodbye to any last upper level
signature from jose, taken over by maria. The large upper trough
over the rockies opens up pulling the energy over the southern
states into it as an open wide shortwave. The NE us ridge breaks
down as maria continues northward. The result for c al Monday
will be only low pops in the afternoon with diurnal heating in
the southwest with better chances near the gulf coast.

Tuesday into Wednesday, the main upper low associated with the
rockies system moves northeast toward manitoba Tuesday and toward
quebec by Wednesday. At the same time, a piece of energy breaks
off from the trough forming a closed low on Wednesday over the
desert southwest. Ridging fills in over the gulf behind maria (as
she treks northward along the atlantic seaboard over the atlantic)
and starts to wrap its way around into texas and the lower ms
river valley. We should remain dry for Tuesday into Wednesday
across central alabama being on the dry northerly flow side of
maria along with ridging in place across much of the deep south.

At the surface, a cold front makes progress across the central
part of the us to near our door step by late Wednesday. Each run
of the guidance looks a little drier ahead of the front. We really
do not get an opportunity for much of any return flow ahead of the
front due to our position in respect to maria. So, I have removed
the low pops on Thursday that were there. A second reinforcing
surface front moves in behind it on Friday escorting a 1030-32 mb
ridge across the upper plains into the mid west states. Extended
models do agree on the secondary front with a nice ridge behind
it. Some disagreement comes into play with the orientation of said
ridge and exactly the extent of our gradients and northerly flow.

This in turn is somewhat dependent on the exact position of maria
by Friday. If she is just off the east coast then we will have
tighter pressure gradients and a more northerly flow across
alabama with colder temperatures. If maria ends up a little
further to the east over the atlantic then we could end up with
more relaxed pressure gradients and a flatter ridge over more of
conus and thus not as strong of a northerly flow with not as much
cold air advection and thus milder temperatures but still
definitely cooler than we are now.

08

Aviation
00z TAF discussion.

PredominantVFR conditions again this period. Went slightly more
optimistic with the fog overnight due to drier air moving in the
east, lack of rain today, and persistence. There has been fog
each night in central alabama and will monitor. A few cumulus
develop during the heating of the day on Monday with high clouds
overhead. Winds remain light overnight and east around 7kts
daytime. More of the same into Tuesday.

75

Fire weather
Shower and thunderstorm chances are more confined to the
southwest counties of central alabama through Monday afternoon
with daytime heating. Relative humidity values only drop into the
upper 40s and 50s. There are no fire weather concerns at this
time. A change in the pattern is expected by early Thursday with
the arrival of a cold front along with cooler and drier weather
expected as we head into next weekend.

Preliminary point temps pops
Gadsden 64 87 64 88 65 10 10 0 0 0
anniston 66 87 65 87 66 10 10 0 0 0
birmingham 68 88 68 90 67 10 10 0 10 0
tuscaloosa 68 90 68 92 68 10 10 0 10 0
calera 68 88 67 89 67 10 10 0 10 0
auburn 67 87 66 88 68 10 10 0 0 0
montgomery 70 90 68 91 69 10 20 10 10 0
troy 66 88 67 89 67 10 20 10 10 0

Bmx watches warnings advisories
None.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Birmingham, Birmingham International Airport, AL8 mi41 minNE 310.00 miMostly Cloudy76°F66°F74%1015.9 hPa
Alabaster, Shelby County Airport, AL19 mi41 minN 09.00 miA Few Clouds74°F71°F91%1015.1 hPa

Wind History from BHM (wind in knots)
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Last 24hrNE4NE4NE4E3CalmCalmNE3NE3NE4CalmE5E5CalmSE6NE5E8E75S3NE6E5NE3NE3NE3
1 day agoCalmCalmCalmCalmCalmCalmNE3NE3E4N3CalmE5SE3E7SE6E4NE8E7E6NE6E7NE4NE3Calm
2 days agoCalmCalmCalmCalmCalmCalmCalmN3CalmE3NE3N34Calm33CalmCalmSE5CalmE3E3NE3NE3

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
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IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Birmingham, AL (22,6,7,8)
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Ground Weather Radar Station Birmingham, AL
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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.