Friday, March24, 2017 L-36.com


Marine Weather and Tides
Pell City, AL

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:39AMSunset 7:00PM Friday March 24, 2017 6:54 PM CDT (23:54 UTC) Moonrise 4:31AMMoonset 3:37PM Illumination 7% Phase: Waning Crescent; Moon at 27 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 Pell City, AL
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location: 33.61, -86.29     debug


Area Discussion for - Birmingham, AL
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Fxus64 kbmx 242335
afdbmx
area forecast discussion
national weather service birmingham al
635 pm cdt Fri mar 24 2017

Update
For 00z aviation.

Short term
Tonight and Saturday.

A mild night tonight due to south to southeast winds staying up
around 10 mph. The air mass is still relatively dry across alabama
with precipitable water values less than one inch. Models also
indicate the low levels will not moisten up much overnight, so
rain free conditions expected this evening, with only a slight
chance of showers in the far west towards sunrise. A pre-frontal
band of convection will be across western mississippi early
Saturday morning. The line of strong to severe thunderstorms will
likely be near a tupelo to jackson mississippi line by 10 am,
reaching marion and lamar counties in central alabama by late
morning. Best low level speed and directional shear across west
alabama will be before 18z, before main convective line moves
across west alabama, so tornado threat still looks minimal at this
time. 0-6km bulk shear still looks favorable for organized
convection along squall line. Hi-res models also show surface
based CAPE values approaching 1000 j/kg across west alabama
Saturday afternoon, so slight risk of severe storms for areas west
of i-65 still looks valid. With loss of daytime heating and a
weakening low level wind field, expect convective activity to
diminish in intensity once it shifts east of i-65. The convective
line's speed will also slow down in the afternoon as the mid level
closed upper low over the plains states takes a more northward
component. With the closed upper low over the plains states
lifting northward and filling, the surface cold front never
reaches alabama and low level winds stay south southwest Saturday
night. Although the threat of severe storms and heavier rainfall
will end Saturday evening, there will be enough residual moisture
hanging around Saturday night for a chance of showers and a few
storms throughout the night.

58/rose

Long term
Sunday through Thursday.

Moist southwesterly low-level flow is expected to continue into
Sunday, and isolated showers/storms cannot be ruled out. Another
upper trough will move toward the area on Monday and has trended
more impressive in terms of the severe weather threat. SBCAPE is
now expected to reach 1000-2000 j/kg with steep lapse rates
spreading eastward across ms into west al. Lift/forcing with the
upper trough appears to be subtle which would allow higher CAPE to
build before convective initiation occurs. Moderate 500mb
westerlies of 30-40 kt could yield clusters and supercells capable
of producing hail possibly larger than quarter size and damaging
winds. The tornado threat appears very low at this time due to
marginal surface to 700mb shear. The upper trough will be slow to
move through, and convection could linger into Tuesday morning
across the north with a moist southwesterly fetch remaining in
place.

Yet another system will move into the plains on Wednesday with
drier and warmer conditions across alabama as a 500 mb ridge
amplifies over the region. It is too early for specifics, but
another severe weather threat could be on the table for Thursday
especially if the trough trends toward more of an open wave than
currently indicated.

87/grantham

Aviation
00z TAF discussion.

--vfr cloudiness tonight into Saturday morning; increasing threat
of thunderstorms west-to-east through Saturday with sub-vfr impacts;
instances of breeziness--
overall overcast cloudiness continues tonight, though there may
be some flex toward broken at times. Based on progged low-level
winds either side of 35-knots and rh values, ceilings are expected
to remain comfortably withinVFR range.

Next, a weather system will affect all terminals in some fashion
on Saturday, tracking west-to-east across the state. We should
begin with spotty/vcsh showers before a line of thunderstorms
moves through. Sub-vfr conditions are expected with the
convection (visibility and/or ceilings). Given the surface front
hanging upstream, areas of lingering showers/storms are possible
beyond the end of the TAF period as well.

Light to modest breezes continue tonight (though reprieved from
Friday afternoon gustiness) thanks to the pressure gradient
between upstream low pressure and ridging off the carolina
coastline. Periods of gustiness are expected to return on
Saturday.

89^gsatterwhite

Fire weather
Rain free conditions expected overnight with south to southeast
winds staying up overnight. Low level moisture will gradually
increase on Saturday as a line of strong to possibly severe
storms moves across central alabama during the day Saturday. Rain
chances will continue Saturday night and into Sunday due to a
moist southwest flow holding over the area. An active weather
pattern will continue into next week. Critical fire weather
conditions are not expected through the next 7 days.

Preliminary point temps/pops
Gadsden 57 77 58 76 57 / 10 80 80 50 20
anniston 58 76 58 77 58 / 0 70 80 50 20
birmingham 61 76 60 78 59 / 10 80 80 40 20
tuscaloosa 61 73 61 81 61 / 10 80 60 30 10
calera 60 77 60 79 60 / 10 80 70 40 10
auburn 58 76 58 78 59 / 0 60 70 40 10
montgomery 61 79 60 84 61 / 10 70 60 30 10
troy 58 78 60 82 61 / 0 60 50 30 10

Bmx watches/warnings/advisories/
None.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Anniston Metro Airport, AL23 mi61 minS 910.00 miFair74°F51°F45%1023.7 hPa

Wind History from ANB (wind in knots)
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Last 24hrSE12E6SE7E10E8E7
G14
E6E7E5E6E6SE4E6E5E7E10SE9SE8S7
G15
S7SE8E6
G16
S8S9
1 day agoE5CalmCalmCalmE3E4NE4NE3NE4NE5NE6NE6NE6NE6E10
G15
E11E12E12
G16
SE9
G17
6
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6
G17
SE11SE11
G18
SE10
2 days agoSW8N22
G30
N7
G14
CalmCalmCalmSE33N66Calm34NE5N7NE7N6N6
G18
NE11N8N8N11N9NE7

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
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Birmingham, AL (19,4,5,8)
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Ground Weather Radar Station Birmingham, AL
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weather_mapweather_map weather_map

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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.