Monday, August26, 2019 L-36.com


Marine Weather and Tides
Gadsden, AL

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Sunrise 6:12AMSunset 7:19PM Monday August 26, 2019 1:53 AM CDT (06:53 UTC) Moonrise 1:48AMMoonset 4:30PM Illumination 19% Phase: Waning Crescent; Moon at 25 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 Gadsden, AL
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location: 34.02, -85.99     debug


Area Discussion for - Birmingham, AL
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Fxus64 kbmx 260538
afdbmx
area forecast discussion
national weather service birmingham al
1238 am cdt Mon aug 26 2019

Update
For 06z aviation.

Short term
Updated at 0710 pm cdt Sun aug 25 2019
the atmosphere has stabilized at the surface from tuscaloosa
northward early this evening. This area experienced earlier
convection and now has a large stratiform region overhead. An
outflow boundary from troy to clanton to south of tuscaloosa was
moving northward and had embedded convection within it. This area
will continue northward with thunder becoming more iffy with time.

But rain chances will remain high with some moderate to heavy rain
at times especially west of i-65. The latest model guidance is in
fair agreement in both time and space that additional showers and
embedded storms will remain a good chance through the overnight
hours. Went ahead and increased rain chances slightly.

Due to the precipitable water value near the high mark at 2+
inches, the synoptic influence of the trough moving in, and
surface front moving northward, have mention some threat for
localized flooding into the hwo for the remainder of the night and
into Monday. As mentioned previously, the threat may not be
widespread enough for a watch, but certainly a localized threat
exists where a few inches of rain may fall in short period of
time.

75
previous short-term discussion:
updated at 0440 pm cdt Sun aug 25 2019
tonight through Monday.

This afternoon we continue to have a stationary boundary situated
across a portion of central alabama from the northwest to
southeast across the west half of the area. This boundary may
meander a little through tonight and continue to aide with
convection. Then on Monday, it is expected to push northeast as a
warm front. In the upper levels, an upper low is present over
louisiana and associated trough is present over we continue in a
moist and with troughing extending back to the north across the
central u.S. The base of this trough is expected to continue to
the northeast through tonight into mississippi and across alabama
on Monday.

Our sounding tells the story with a very saturated column for
bmx. Pw's this am were at 2.12 inches, up not surprisingly from
yesterday. This increasing trend will continue tonight into Monday
with onshore flow to increase in the lower and upper levels
across central alabama with guidance showing a little higher 2+ pw
values spreading across the area. With the convection yesterday,
ongoing today, and the QPF expected on Monday, we have added a
mention for some localized flooding in the hazardous weather
outlook for today and Monday. With that said, we have been in a
dry period up to this event, so some areas will appreciate the
rain with widespread flooding not anticipated. Will forgo a flood
watch at this time.

Tuesday through the weekend.

As far as changes in the extended for late Monday through the
weekend, we continue with a moist airmass into Tuesday and a
front moving through on Wednesday. Confidence is increasing for a
small cooling down, clearing out, and drying out for central
alabama starting Wednesday night and lasting generally through
Friday as a large surface ridge moves in from the central u.S.

Slowly making progress eastward across the east half of conus. On
Saturday, most should still be dry, but a few in the southeast
could see some diurnally influenced convection with the help of an
inverted trough that may develop over the gulf of mexico.

08

Long term
Updated at 0342 am cdt Sun aug 25 2019
Tuesday through Saturday.

More thunderstorms are expected on Tuesday as a cold front
approaches from the northwest, but should see a bit of dry air
work in behind the shortwave trough from Monday with shortwave
ridging also noted in the low-levels which will help reduce the
overall rain coverage. Temperatures are forecast to remain below
90f on Monday with highs in the low mid 80s and upper 80s on
Tuesday as widespread rain and cloud cover keeps us a bit cooler
although humid.

A northeast-southwest oriented cold front, associated with broad
deep-layer troughing over ontario, will pass through central alabama
late Tuesday afternoon into Wednesday. As noted above, the presence
of drier mid-level air from 700-500mb ahead of the front may hinder
the spatial development of rain during the overnight hours. However,
latest guidance diverges a bit on the timing of the frontal passage
and amount of dry mid-level air. Therefore, decided to keep pops
around 20-40 percent for Wednesday due to the lower confidence with
highest chances along and southeast of i-20. A much drier airmass
sets in behind the front for Thursday through Saturday with ridging
amplifying back over the southeast. May see a small increase in rain
chances for our southeastern counties on Saturday as a low-level
inverted trough develops over the gulf coast, but confidence on this
solution remains low at this time. Therefore, plentiful sunshine is
expected for the end of the work week with highs in the upper
80s low 90s and overnight lows in the mid upper 60s.

86

Aviation
06z TAF discussion.

Stratiform rain and overcast clouds cover much of central al and
will continue to do so through this TAF period. CIGS have been the
biggest problem over the last few hours, with most sites bouncing
between MVFR and ifr. I think that pattern will continue for much
of the period as well. Rain and showers continue for the northern
taf sites, and at times may reduce vis. Confidence is low for any
specific site to see vis restrictions, so i've kept 6sm in the
tafs. Mgm and toi still could see some instability build in
tomorrow, so i've left mention for vcts in the afternoon.

25 owen

Fire weather
Shower and thunderstorm chances remain elevated through Tuesday as
we remain in a moist tropical airmass. With the increased
moisture, minimum relative humidity values will be elevated as
well. Gusty winds will be possible in close proximity to any
thunderstorms that do develop. A surface frontal boundary is
expected to move through Wednesday into Thursday. Although drier
air will arrive, minimum relative humidity values for the end of
the week should still remain above critical levels.

Preliminary point temps pops
Gadsden 80 69 87 70 88 90 80 60 40 20
anniston 80 70 86 70 88 90 80 60 30 30
birmingham 82 72 88 72 90 90 70 60 40 30
tuscaloosa 83 72 89 72 89 80 50 60 40 30
calera 82 70 88 71 90 90 60 60 40 30
auburn 82 71 86 72 88 90 80 70 30 40
montgomery 84 72 89 73 91 90 60 70 30 40
troy 83 71 88 71 90 90 50 70 30 40

Bmx watches warnings advisories
None.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gadsden, Gadsden Municipal Airport, AL6 mi4 hrsN 010.00 miOvercast72°F72°F100%1017.3 hPa
Albertville, Albertville Municipal Airport, AL20 mi3 hrsSE 410.00 miRain70°F68°F94%1017.3 hPa

Link to 5 minute data for KGAD

Wind History from GAD (wind in knots)
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Last 24hrNE4NE4E4E5NE8E8E8E7E8E8E8E6E10E9E8SE6E8SE8E7E4CalmSE3E4E3
1 day agoW3CalmCalmCalmCalmCalmN3N3NE54N5CalmNE64NE6N36SW5SW3E7NE7CalmE4E6
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmW5E3SW9NW3W3W5CalmCalmW4CalmN3CalmCalmCalmCalmCalm

Tide / Current Tables for
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Weather Map and Satellite Images
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Wind Forecast for Birmingham, AL (2,6,7,8)
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Ground Weather Radar Station Northern Alabama
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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.