Monday, August19, 2019 L-36.com


Marine Weather and Tides
Guntersville, AL

Version 3.4
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7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:07AMSunset 7:29PM Monday August 19, 2019 9:16 AM CDT (14:16 UTC) Moonrise 9:59PMMoonset 9:41AM Illumination 84% Phase: Waning Gibbous; Moon at 19 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 191250
afdhun
area forecast discussion
national weather service huntsville al
750 am cdt Mon aug 19 2019

Near term (rest of today)
issued at 749 am cdt Mon aug 19 2019
extensive mid and high clouds are found in advance of an elongated
5h trof axis. Have adjusted sky grids to account for this trend.

Virga and perhaps a few sprinkles were occurring in portions of north
central and northeast al. With few clouds behind the trof axis,
expect the hottest temps to be in NW al shoals area where the current
heat advisory resides. Isolated thunderstorms still look reasonable
later this afternoon per latest hrrr guidance.

Short term (tonight through Wednesday night)
issued at 345 am cdt Mon aug 19 2019
any ongoing convective activity should rapidly diminish after sunset
this evening. Scattered cirrus clouds are expected to continue
overnight, with mild low temperatures in the low to mid 70s.

Tomorrow, the upper level ridging builds farther northward into the
central plains. Although heights over the tn valley do not
significantly change, increasing surface convergence will lead to
higher thunderstorm coverage tomorrow than is expected today. Because
of this, high temperatures are limited to the mid 90s and heat
indices mostly remain between 100 and 105. However, some isolated
areas above 105 are possible, making additional heat advisories
possible tomorrow. Because of the axis of surface convergence
combined with possible remnant outflow boundaries, an isolated shower
or thunderstorm remains possible overnight tomorrow night as low
temperatures once again only decrease to the low to mid 70s.

As the upper level ridge remains over the central plains, the regime
of northwest flow aloft sets us up for higher chances for showers and
thunderstorms Wednesday into Wednesday night. Higher cloud cover and
rain chances will limit high temperatures in the mid 90s on
Wednesday. Pops were kept in the chance range for now, but as
confidence in timing and placement increases, I would not be
surprised if these were elevated to likely. Wednesday night will
continue to see elevated chances for showers and thunderstorms due
to a shortwave trough digging into the great lakes region. This
shortwave will push a surface low into the northeast, dragging a weak
surface boundary through the midwest and into the mid-mississippi
valley. Moisture convergence along this axis will see rain chances
pick up Wednesday night heading into Thursday.

Long term (Thursday through Sunday)
issued at 345 am cdt Mon aug 19 2019
after a very warm to hot first half of the week, slightly cooler
temperatures and wetter conditions are forecast across the tennessee
valley to close out the week. An upper low moving to the ese across
the hudson bay and quebec will help in the development of a surface
low north of the great lakes on Wednesday, deepening as it moves
across the st lawrence seaway late in the week. A cold front trailing
behind this low, being pushed to the south by high pressure building
southward from central canada, will approach the forecast area. As
has been the case the past few days, the various medium range models
vary somewhat on where the boundary will actually settle.

Going with a blend, the front should reach the tn al border sometime
late Friday into Saturday. Before then, a persistent southerly flow
rounding high pressure off of the east coast will gradually increase
atmospheric moisture content, with precipitable water amounts rising
into the 1.8" to 2.1" range in the thu-sat timeframe. This moisture,
aided by lift from the approaching boundary, and a more unstable
atmosphere will yield good rain chances for the late week. The
gfs ECMWF canadian to a degree all painted showers over the region
during the late week with the frontal boundary, so went with likely
chances of showers and thunderstorms for Thu fri. More uncertainly on
where the front ends up and greater model spread yielded lower rain
chances for the weekend, but still in the scattered range (25-54%).

Gfs soundings suggest that stronger storms are possible on Thursday,
with gusty winds and locally heavy downpours.

More clouds and shower activity will put a damper on daily
temperatures. High temperatures on Thursday should range into the
lower 90s, and upper 80s for fri-sun. Low temperatures in the lower
70s thu-sat mornings, should cool to near 70 by Sunday morning.

Aviation (for the 12z tafs through 12z Tuesday morning)
issued at 604 am cdt Mon aug 19 2019
bkn ovc altostratus will continue to scatter and move eastward this
morning, leaving behind mostly clear skies. A scattered CU field will
develop late this morning with wind remaining 5-7 kts or lower.

Isolated showers and thunderstorms may develop later today, but the
highest confidence is east of the terminals, so no mention was made
in the taf. There is also a chance for patchy fog development
tomorrow morning, but confidence is too low to include at this time.

Hun watches warnings advisories
Al... Heat advisory from noon today to 7 pm cdt this evening for
alz001>003.

Tn... None.

Near term... 17
short term... 30
long term... Rsb
aviation... 30
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 mi42 minN 010.00 miMostly Cloudy79°F68°F70%1018.6 hPa

Link to 5 minute data for K8A0

Wind History from 8A0 (wind in knots)
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Last 24hrSW3W4NW7W5CalmW5CalmW4W6SW3CalmCalmSE3SE4S5CalmCalmSE5S3CalmCalmCalmCalmCalm
1 day agoCalmCalmNW4N6NW5CalmNE3NE3N6W3CalmNE3NE3CalmCalmE3E3E4SE3SE4SE5SE4S3SW4
2 days agoNE3N4W3NW9NW7NW8N7NW9N7N4N5N5CalmCalmCalmCalmCalmNE3NE3E3CalmCalmNE3NE3

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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GOES Local Image of    EDIT
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Huntsville, AL (10,2,3,4)
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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.