Tuesday, January16, 2018 L-36.com


Marine Weather and Tides
Nacogdoches, TX

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:16AMSunset 5:40PM Tuesday January 16, 2018 1:16 PM CST (19:16 UTC) Moonrise 6:53AMMoonset 5:32PM Illumination 0% Phase: New Moon; Moon at 29 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 161144
afdshv
area forecast discussion
national weather service shreveport la
544 am cst Tue jan 16 2018

Aviation
Precipitation across most of the region overnight has transitioned
from rain to snow, and a little sleet mix, as sfc temperatures
quickly fell below the frzg mark. Some frzg rain also occurred at
the klfk terminal. Most other areal terminals may see one to three
inches of snow on runways, except kmlu, where transition to snow
was recent. Mostly low MVFR to ocnl borderline ifr CIGS across
the region will begin to gradually lift as precip diminishes.

Vsbys thru around 16 14z may fall to btwn one to two miles at
times in heavier snowbands. North winds 10 to 20 kts, most gusty
across NE tx terminals, will gradually diminish today, along with
a transition toVFR mid lvl decks by midday, and mostly skc before
17 00z across the region thru the remainder of the 17 12z fcst
cycle and beyond. As sfc temps remain below frzg areawide today,
all sfc moisture at terminals will remain frozen. 07

Prev discussion issued 405 am cst Tue jan 16 2018
discussion...

the wintry event we have been anticipating for has definitely
arrived across the four-state region, as the cold front ushered in
the arctic airmass and thus dropped temps to subfreezing across all
but portions of deep east tx and central la as of 09z this morning.

As expected rain quickly transitioned to a freezing rain sleet mix
to an all snow event, with public reports of 2 inches of snowfall at
texarkana, ar and anywhere from 1 4 inch to 1 2 inch of a sleet and
snow mix around the tyler, tx areas. Shreveport has been all snow
for the last few hours but of late, reported vis obstructions of
less than 3 miles due to the snow. Furthermore, icy slushy road
conditions across east tx near tyler and longview validates the
hazardous driving conditions that has arose, and with temperatures
today expected to not warm to above freezing, driving conditions
will remain slick. Latest radar showed the back edge of the wintry
precip across far southeast ok and extreme northeast tx, which
has resulted in no wintry precip falling across northwest
mccurtain county at this time. The hrrr solution seems to have a
good handle on the going precip event and therefore exhibited the
precip to continue to shift southeastward across the CWA with
precip coming to an end at shreveport AOA 14-16z and shifting to
south of jena, la by late afternoon. Have therefore adjusted the
expiration dates of the ongoing advisories and warnings: the
winter weather advisory across southeast ok, extreme northeast tx
and portions of southwest ar will now expire at 15z, the winter
weather warning affecting the majority of the ARKLATEX will now
expire at noon, and the expiration time for the other winter
weather advisory across central louisiana and deep east tx will
remain at 6 pm will let the dayshift look at the trends to see if
it could expire earlier than that . Although the snow sleet will
be coming to an end this afternoon, the breezy northerly winds
will cause wind chills to fall into the single digits early this
morning through noon the wind chill advisory will expire on time
at noon thus making for a cold and raw day. Furthermore,
motorists are urged to exercise caution as many primary and
secondary roadways, including elevated surface such as bridges and
overpasses will be quite slick. As such, traveling is highly
discouraged.

This evening a few hours after sunset, clearing skies and light
winds will allow for excellent radiational cooling to occur. With
lingering snow ice on the ground, overnight temperatures will
plummet into the lower to mid teens with perhaps portions of
southeast ok and southwest ar flirting with single digit readings.

Have therefore elected to once again hoist a wind chill advisory
for this evening through late tomorrow morning wind chills
dropping into the single digits , as well as a hard freeze
warning. Make sure you protect exposed pipes and bring outdoor
pets indoors. Daytime temps tomorrow will barely get to the
freezing mark with perhaps a few place alongs and south of the
i-20 corridor getting to a degree or so above freezing however
deep east tx may see temps in the middle 30s . Once again any
lingering frozen precip on roadways could create traveling
problems so use caution. Tomorrow night is anticipated to not be
as cold as tonight but still will drop into the mid to upper teens
thus showing how cold this arctic airmass truly is.

Thereafter, a reprieve will be underway on Thursday as the cold
airmass finally shifts east of the region and causing highs to warm
into the 40s whilst surface winds veer to the south. For the last
several runs, computer models have been showing an ua low
translating east southeast across central tx to across southeast tx
by Friday aftn evening. Ensuing south-southeast sfc winds will aid
in transporting gulf moisture to across the region and perhaps some
light rain showers could impact portions of the area Friday night-
Saturday as the said disturbance is progged to open up and weaken
by the time it makes it here. However, better chances for
widespread rainfall is being shown to occur this weekend as a
stronger and broader ua low progress eastward from near the four-
corners region to across the central plains by Sunday evening.

Its pacific cold front that will impact the ARKLATEX will be the
focus of precip with model solutions hinting a bit of MUCAPE to
support isolated thunderstorms. Precip is expected to quickly
shift from west to east and clearing the fa by Monday morning.

The warmup will continue as we head into the weekend with highs
reaching the 60s by Saturday some 9-10 degrees above normal before
dropping back to only the 50s by early next week in response to the
aforementioned pacific front.

Preliminary point temps pops
Shv 28 15 33 19 70 0 0 0
mlu 29 14 32 17 80 0 0 0
deq 25 10 32 15 10 0 0 0
txk 25 10 32 17 30 0 0 0
eld 27 11 32 17 60 0 0 0
tyr 26 13 32 20 30 0 0 0
ggg 27 12 32 18 60 0 0 0
lfk 31 16 37 19 80 0 0 0

Shv watches warnings advisories
Ar... Hard freeze warning from 8 pm this evening to 10 am cst
Wednesday for arz050-051-059>061-070>073.

Winter storm warning until noon cst today for arz059>061-070>073.

Wind chill advisory until noon cst today for arz050-051-059>061-
070>073.

Wind chill advisory from 8 pm this evening to 10 am cst
Wednesday for arz050-051-059>061-070>073.

Winter weather advisory until 9 am cst this morning for arz050-
051.

La... Hard freeze warning from 8 pm this evening to 10 am cst
Wednesday for laz001>006-010>014-017>022.

Lake wind advisory until 9 am cst this morning for laz001>003-
010>014-017>022.

Winter storm warning until noon cst today for laz001>004-006.

Wind chill advisory until noon cst today for laz001>004-010.

Wind chill advisory from 8 pm this evening to 10 am cst
Wednesday for laz001>006-010>014-017>022.

Winter weather advisory until 6 pm cst this evening for laz005-
010>014-017>022.

Ok... Hard freeze warning from 8 pm this evening to 10 am cst
Wednesday for okz077.

Lake wind advisory until 9 am cst this morning for okz077.

Wind chill advisory until noon cst today for okz077.

Wind chill advisory from 8 pm this evening to 10 am cst
Wednesday for okz077.

Winter weather advisory until 9 am cst this morning for okz077.

Tx... Hard freeze warning from 8 pm this evening to 10 am cst
Wednesday for txz096-097-108>112-124>126-136>138-149>153-
165>167.

Lake wind advisory until 9 am cst this morning for txz096-
108>111-124>126-136>138-149>153-165>167.

Winter storm warning until noon cst today for txz097-108>112-
124>126-136>138-149>151.

Wind chill advisory until noon cst today for txz096-097-108>112-
124>126-136>138-149>153.

Wind chill advisory from 8 pm this evening to 10 am cst
Wednesday for txz096-097-108>112-124>126-136>138-149>153-
165>167.

Winter weather advisory until 6 pm cst this evening for txz152-
153-165>167.

Winter weather advisory until 9 am cst this morning for txz096.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Nacogdoches, A L Mangham Jr. Regional Airport, TX4 mi20 minNNW 1210.00 miPartly Cloudy25°F17°F72%1039.8 hPa

Wind History from OCH (wind in knots)
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Last 24hrSW6SW5CalmSE4SE4SE5SE4N7N12
G21
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N16
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--N11
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N9
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--NW12
1 day agoE56SE4--E3SE3CalmCalmCalmCalmSE3CalmCalmCalmCalmCalmCalmCalmCalmSE4S8S863
2 days agoN9NW8NW6N7N4NE3CalmCalmE5E5E4E6E4E5E4E5E6CalmCalm5SE4SE63S5

Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
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IR Satellite Image from GEOS
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GOES Local Image of SouthCentralPlains    EDIT
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Wind Forecast for Shreveport, LA (14,3,4,5)
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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.