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 9:10 AM CDT (14:10 UTC) Moonrise 4:31AMMoonset 3:37PM Illumination 10% 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 241210
afdbmx
area forecast discussion
national weather service birmingham al
710 am cdt Fri mar 24 2017

Update
For 12z aviation.

Short term
Today and tonight.

This am, a large surface high pressure ridge was centered just off
the atlantic seaboard with southeast to south low level flow into
alabama. The satellite picture over central alabama, unlike
yesterday at this time, is almost completely overcast across
central alabama as a result of this change. High pressure across
across the state will continue to weaken with southerly flow
increasing as the ridge moves further into the atlantic. This is
due to our continued advancement of a developing low pressure
system across eastern colorado into western kansas with an
associated front extending southward into west texas. This low
should push toward missouri through tonight and drag the front
toward the mississippi river valley extending into southeast texas
in the process.

The main change expected for today will be a smaller diurnal
temperature range with the extra cloud cover and thus not quite as
warm high temperatures. Also, dew points will continue to slowly
creep up with the continued warm sector onshore flow. Mild
conditions continue into tonight ahead of our approaching weather
system. All guidance including hires, except gfs, hold off precip
until the daytime on Saturday. I only left in very low pops in the
far west from 9-12z.

08

Long term
Saturday through Thursday.

Storms should be ongoing across ms at daybreak Saturday with a
respectable 40-60 kt low-level jet to our west. An organized band
of storms moving eastward from ms should encounter a less
favorable environment with the low-level jet weakening as the
system becomes vertically stacked. SBCAPE values should range from
300-700 j/kg and combine with 0-6 km shear of 40-45 kt yielding a
low-end threat for damaging winds mainly west of i-65 late
Saturday morning and into the early afternoon. The severe weather
threat should gradually decrease with eastward extent as
instability decreases. Additional showers and an occasional
thunderstorm may develop Saturday night with the surface front and
500 mb trough axis hanging back to the west.

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
12z TAF discussion.

Vfr tafs for the next 24 hours. Winds will be southeast and a
little gusty today as surface pressure gradients increase with
high pressure exiting to the east and a low pressure system/front
inching closer from the west. Any precipitation/lower CIGS should
hold off until after 12z so tafs are rain free.

08

Fire weather
Low level moisture will gradually increases today ahead of
increased rain chances for this weekend. Thunderstorms are
expected, with locally heavy rainfall. Another system will bring
more rain chances for Monday and Tuesday. Critical fire weather
conditions are not expected through the next 7 days.

Preliminary point temps/pops
Gadsden 74 57 77 58 76 / 0 10 80 80 50
anniston 74 57 76 58 77 / 0 0 70 80 50
birmingham 76 60 76 60 78 / 0 10 80 80 40
tuscaloosa 78 60 73 61 81 / 0 10 90 60 30
calera 77 59 77 60 79 / 0 10 80 70 40
auburn 76 57 76 58 78 / 0 0 50 60 40
montgomery 80 60 79 60 84 / 0 10 70 60 30
troy 79 58 78 60 82 / 0 0 50 50 30

Bmx watches/warnings/advisories/
None.

08/87


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Anniston Metro Airport, AL23 mi18 minE 710.00 miOvercast61°F50°F67%1028.8 hPa

Wind History from ANB (wind in knots)
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Last 24hrE11E12E12
G16
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1 day agoNE7N6N6
G18
NE11N8N8N11N9NE7E5CalmCalmCalmE3E4NE4NE3NE4NE5NE6NE6NE6NE6E10
G15
2 days agoW13W9SW10W10
G18
SW12SW13
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W11SW8N22
G30
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CalmCalmCalmSE33N66Calm34NE5N7

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 (10,2,3,4)
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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.