Friday, September20, 2019 L-36.com


Marine Weather and Tides
Nacogdoches, TX

Version 3.4
NOTICE
9/4/2019 Fixed the weather maps due to NOAA moving them.
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 7:04AMSunset 7:19PM Friday September 20, 2019 5:31 AM CDT (10:31 UTC) Moonrise 10:30PMMoonset 11:50AM Illumination 63% Phase: Waning Gibbous; Moon at 21 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 Nacogdoches, TX
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location: 31.61, -94.65     debug


Area Discussion for - Shreveport, LA
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Fxus64 kshv 200934
afdshv
area forecast discussion
national weather service shreveport la
434 am cdt Fri sep 20 2019

Short term today through Saturday night
current regional radar shows a large area of precipitation moving
northeast through east tx and NW louisiana this morning in
association with the remnants of imelda. This precipitation will
continue to spread northeast into the remainder of our louisiana
parishes this morning as well as SE oklahoma and SW arkansas.

Additional convection will develop across the region today as the
remnants of imelda, now an open wave, continues to move northward
out of the region. Fortunately for us, it appears we will not see
the rainfall amounts expected earlier with this system. An
additional 1-3 inches will be possible today, with the highest
totals across the western half of the region.

By Saturday, the remnants of imelda should be well north of the
region, merging with a frontal zone in the central plains and
midwest. Upper level ridging will begin to build into the SE conus
and into our region. Despite the ridging, decided to maintain
slight rain chances across deep east tx and west-central louisiana
as deep southerly flow along with daytime heating could result in
isolated afternoon convection. Some of this convection could move
further north toward the i-20 corridor of east tx and NW louisiana,
but confidence is low at this time.

Temperatures will remain below normal today with the rain and
cloud cover over the region. Afternoon highs will struggle to
reach the mid 80s. Look for afternoon temperatures to rebound into
the upper 80s to near 90 degrees on Saturday with the upper ridge
expanding into the region. 20

Long term Sunday through Friday
by the end of the weekend, upper ridging will be set up across the
southeast u.S. With the ridge axis extending westward across the
lower miss river valley into S tx. A longwave trough should be
moving out of the intermountain west Sun morning, filling as it
ejects quickly into the central and northern plains by Sun evening.

Cannot rule out some isolated, diurnally driven convection across
our western half on Sunday where moisture will be a little more
prevalent. There will be weak frontal boundary in association with
this ejecting longwave trough that will try to backdoor into our
northern third Monday aftn evng which could help to focus scattered
convection along and ahead of it so did beef pops up to low end
chance variety to account for this. What is left of this boundary
should return back to the north or washout all together Tue into wed.

By wed, the upper ridge axis will begin to lose its identity across
the southern plains with southwest flow aloft developing across the
plains as an upper level trough carves its way across the southwest
conus. Kept pops out of the forecast for Wed but did increase pops
to low end chance variety for Thu as this trough ejects out into the
southern plains. This trough should help to tap deeper gulf of
mexico moisture on Thu which should support the increase in
convectional coverage. We are back to isolated diurnally driven
convection for Fri with southwest flow aloft continuing in the wake
of the ejecting trough.

13

Prev discussion issued 1138 pm cdt Thu sep 19 2019
aviation...

conditions to deteriorate overnight as ceilings become MVFR ifr
areawide after 20 06z. Additionally, widespread showers will
continue to overspread the region overnight with vcsh conditions
possible across area terminals. Ceilings to gradually improve to
vfr by 20 18z with east to southeast winds around around 10 knots
increasing to 10 to 15 knots on Friday with gusts to 25 knots
across mainly east texas terminals.VFR conditions expected after
21 00z with southeast winds 5 to 15 knots across area terminals.

05

Preliminary point temps pops
Shv 82 71 88 71 60 10 10 10
mlu 86 69 90 70 40 10 10 10
deq 82 70 88 70 80 40 10 10
txk 82 70 88 71 70 30 10 10
eld 83 68 89 69 40 20 10 10
tyr 85 72 88 71 60 10 10 10
ggg 84 71 88 71 60 10 10 10
lfk 84 72 87 71 50 10 20 10

Shv watches warnings advisories
Ar... None.

La... None.

Ok... None.

Tx... None.

20 13


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for KOCH

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Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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GEOS Local Image of SouthCentralPlains    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

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Wind Forecast for Shreveport, LA (6,6,7,8)
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Ground Weather Radar Station Shreveport, LA
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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.