Wednesday, September19, 2018 L-36.com


Marine Weather and Tides
Guntersville, AL

Version 3.4
What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 6:30AMSunset 6:46PM Wednesday September 19, 2018 3:10 PM CDT (20:10 UTC) Moonrise 3:50PMMoonset 1:24AM Illumination 74% Phase: Waxing Gibbous; Moon at 10 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 Guntersville, AL
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location: 34.37, -86.25     debug


Area Discussion for - Huntsville, AL
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Fxus64 khun 192001
afdhun
area forecast discussion
national weather service huntsville al
issued by national weather service birmingham al
301 pm cdt Wed sep 19 2018

Near term (tonight)
issued at 301 pm cdt Wed sep 19 2018
deep layer ridge will slide across the area this afternoon and
tonight, and continue to suppress convection. Do not expect anything
more than a scattered CU field through the rest of the day, which
will diminish quickly with sunset. Valley and river fog is possible
again tonight, with temperatures in the upper 60s to lower 70s.

Short term (Thursday through Friday night)
issued at 301 pm cdt Wed sep 19 2018
by Thursday afternoon, the deep layer ridge will have strengthened
slightly and shifted eastward, centered over the western carolinas.

Another day of dry, mostly sunny and hot conditions can be expected.

With drier air in place and dewpoints mixing out into the 60s during
the afternoon, heat index values should remain below 100f. Will
begin to see a pattern shift Thursday night as the ridge moves toward
the east coast and a weak trough moves across the plains. Moisture
will increase as mid level winds become southerly. Cannot rule out a
shower or two overnight, but will maintain only a 10 pop. Increasing
moisture transport will lead to isolated to scattered showers and
thunderstorms Friday and Friday night, with the best coverage in the
west, as drier air associated with the lingering upper level ridge to
our east nudges into northeast alabama.

Long term (Saturday through Tuesday)
issued at 341 am cdt Wed sep 19 2018
only minor changes needed to the extended to account for differences
in model timing of an approaching front and increased rain chances
beginning Saturday. The previous discussion remains valid and is
below.

By early Saturday, a surface front will be draped roughly sw-ne
across the area. The exact location (down to county scales) is
uncertain at this time. Nevertheless, with the front in proximity,
broad scale low-lvl mass moisture convergence will provide the
necessary forcing for the eventual development of showers and
thunderstorms in the unstable environment. It appears as though
instability CAPE will still be generally modest with ml CAPE values
forecast below ~1000 j kg and sb CAPE generally below ~1500 j kg.

Shear is also likely to be rather weak during the weekend, with
environmental flow below 25 kts through most of the tropospheric
column. With that said, the long, skinny CAPE profiles, high pws,
high wbz heights combined with slow cell movement could lead to some
locally heavy rainfall where any stronger cells do occur. The front
may move initially to our south on Sunday before moving back across
the area during the day, triggering more shower and thunderstorm
activity. The increased likelihood of impacts associated with the
frontal boundary have lead to an increase in pops for the weekend
into the likely category for the afternoons.

The sheared remnants of upper vorticity associated with a shallow
long wave trough will still be present in the region as the surface
boundary moves to our north. However, gradual strengthening and
deepening southerly flow will develop across the region as a
mid upper ridge strengthens off the coast in the western atlantic.

Sufficient instability and forcing will lead to the potential for
scattered showers and thunderstorms for both Monday and Tuesday.

Temperatures will remain warm with daytime high values likely in the
mid or upper 80s at most spots, but this will ultimately depend on
the amount of convection and associated cloud cover.

A look ahead still indicates good chances for the passage of a
"fall-like" cold front around the middle to latter part of next week.

Aviation (for the 18z tafs through 18z Thursday afternoon)
issued at 1242 pm cdt Wed sep 19 2018
cu field developing across the region this afternoon, with heights
around 5kft. Upper level ridging and drier air will limit cloud
growth and convection this afternoon. Southeasterly to southerly
winds will become light or calm this evening, with prevailing clear
skies. Confidence in light fog at terminals is too low to include at
this time, and will lean toward persistence and maintainVFR
conditions through the night. Winds increase from the southeast
Thursday morning at 4-5kts.

Hun watches warnings advisories
Al... None.

Tn... None.

Near term... Bhm
short term... Bhm
long term... Kdw
aviation... Bhm
for more information please visit our website
at weather.Gov huntsville.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Albertville, Albertville Municipal Airport, AL10 mi76 minSE 410.00 miPartly Cloudy90°F69°F52%1016.3 hPa

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Last 24hrNW5CalmN3CalmN7N5CalmSE4NE3CalmNE4CalmNE3NE3CalmCalmNE4NE3CalmCalmCalmCalmW4Calm
1 day agoNW8N6N4N4CalmNE3N3NE3N3NE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW3N5CalmW7
2 days agoNE9NE3N6N6NE6N4N4N4CalmCalmCalmCalmCalmSW3CalmS3CalmCalmCalmW5CalmNW4N7N9

Tide / Current Tables for
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Weather Map and Satellite Images
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NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for Huntsville, AL (16,3,4,5)
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Ground Weather Radar Station Northern Alabama
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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.