Friday, August23, 2019 L-36.com


Marine Weather and Tides
Nacogdoches, TX

Version 3.4
NOTICE
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 6:47AMSunset 7:54PM Friday August 23, 2019 7:05 PM CDT (00:05 UTC) Moonrise 11:51PMMoonset 12:58PM Illumination 41% Phase: Third Quarter Moon; Moon at 23 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 232111
afdshv
area forecast discussion
national weather service shreveport la
411 pm cdt Fri aug 23 2019

Short term through tomorrow night
the persistent subtropical ridge over the region is currently showing
good signs of breaking down, at least temporarily, over the
region in the short term period. Shower and thunderstorm coverage
is definitely better across the region than has been the case in
the last handful of days, although a good many locations over
central and western zones have still yet to receive much in the
way of wetness.

Through tomorrow, the ARKLATEX will benefit from another
disturbance approaching in the dipping westerlies while a cut-off
low gradually pushes north northeast into la. Both of those
factors will increase lift and atmospheric moisture, resulting in
an increasingly better coverage of showers and thunderstorms
through the day tomorrow. The disturbance approaching from our
northwest will likely get a somewhat vigorous cluster of
thunderstorms advancing toward northwestern zones later tonight
with some residual of this activity probably spilling into
northern zones by daybreak. In our south the considerable moisture
influx tied the cut-off low progressing north of the coastline
could even keep some showers going through through the bulk of
the night. No widespread hazardous weather is anticipated with the
thunderstorm activity through tomorrow, although localized heavy
downpours causing some minor flooding issues cannot be ruled out
in far southern zones. As always with summertime storms, a few
storms producing frequent lightning, brief gusty winds, and
torrential downpours cannot be ruled out through the next 36
hours. Fortunately, the increasing rain chances will help keep
temperatures a little cooler with highs tomorrow expected to
remain below 95 degrees in all areas with heat indices mainly
maxing out at or below 100 degrees. 50

Long term Sunday through Friday morning
an upper level trough will be pushing through the area during the
day on Sunday bringing an increase in rain chances that day. Plenty
of instability at the surface and steep mid-level lapse rates by the
late afternoon will bring a marginal chance of severe weather in far
northern sections of the region north of i-30 in SE ok and SW ar.

Also, could see rainfall rates be very efficient as precipitable
water values will be in excess of 2 inches over much of the area.

Then, the upper level ridge to our west nudges back into the four
state region on Monday and maybe into Tuesday where we could see
heat index values spike to over 105f, mainly for east texas and
extreme sections of northwest louisiana. But, this is where the long
range guidance begins to differ. The ECMWF wants to push a front
through on Tuesday while the GFS holds it up further north of the
area. Either way, Wednesday will have increased rain chances as the
front is either passing through or stall out near our area. But, by
Thursday rain chances will be decreasing from north to south as the
front makes a final push south.

Temperatures will hold near normal at the beginning of the period
but will warm up to the mid to upper 90s for Monday and possibly
into Tuesday. Depending on what happens with the timing of the front
during mid-week, we could see temperature returning to near normal
values. 35

Aviation
For the 23 18z TAF period,VFR conditions observed this afternoon
as expansive CU field covers our terminal airspace. Within this cu
field, scattered shwrs and isolated tstms are noted per shv radar
as copius low level moisture continues advecting northward from
the gulf while a weak frontal boundary is perched just to our
north. This will result in additional convection developing this
afternoon through early evening before dissipating with heating
loss after sunset. Have handled most sites with vcsh vcts and will
amend as needed with tsra if terminals are impacted. Otherwise,
look for low stratus develop again overnight through early sat
morning and advect north with all sites likely seeing MVFR cigs
and a few possibly with patchy fog where rainfall occurs. Light
s SE winds will prevail through the period as most sites, but
txk eld may see more variable winds due to the proximity of the
frontal boundary. Stronger winds will be possible in convection.

19

Preliminary point temps pops
Shv 75 93 75 93 30 50 30 50
mlu 73 91 73 90 40 60 40 60
deq 73 88 72 90 40 60 30 40
txk 74 89 73 91 30 50 30 40
eld 73 90 72 90 30 60 40 50
tyr 74 93 75 95 20 40 20 30
ggg 75 93 75 95 20 40 20 40
lfk 74 93 75 94 20 50 20 40

Shv watches warnings advisories
Ar... None.

La... None.

Ok... None.

Tx... None.

50 35


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Nacogdoches, A L Mangham Jr. Regional Airport, TX4 mi69 minSE 710.00 miFair89°F73°F61%1012.7 hPa

Link to 5 minute data for KOCH

Wind History from OCH (wind in knots)
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Last 24hrSE6SE7S7----S5--SE4----CalmE4E3--3SW5Calm3SE55E13
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1 day agoS6S6S6--S3----S4Calm--CalmCalm--Calm3SW3SW7SW7SE6S9S7S6SE5SE8
2 days agoSE6S4S3SE4--------SE4S3CalmCalm----SW7SW7W4W6436CalmSE7SE8

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 Shreveport, LA (20,4,5,8)
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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.