Thursday, May25, 2017 L-36.com


Marine Weather and Tides
East Mountain, TX

Version 3.4
What's New / NOTES
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 6:13AMSunset 8:19PM Thursday May 25, 2017 1:23 PM CDT (18:23 UTC) Moonrise 5:21AMMoonset 7:17PM Illumination 0% Phase: New Moon; Moon at 0 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 East Mountain, TX
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location: 32.58, -94.79     debug


Area Discussion for - Shreveport, LA
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Fxus64 kshv 251748
afdshv
area forecast discussion
national weather service shreveport la
1248 pm cdt Thu may 25 2017

Aviation
For the 25 18z tafs, some scattered cumulus clouds will be
possible across north central louisiana through sunset, but most
of the area, including all TAF sites, should experience skc
conditions until the early morning hours of Friday. Wind speeds
are only expected to diminish slightly after sunset, with winds
near or above 10 kts persisting at most terminals. The strong
southerly low level flow should bring low stratus into portions
of the area before sunrise Friday morning. This could result in
MVFR ceilings across east texas and extreme western louisiana,
including ktyr, kggg, and klfk. Ceilings will be slow to lift
after daybreak, and increasing mid and high clouds are expected
from the west. Winds speeds will likely increase once again to
around 15 kts areawide with gusts near or above 25 kts by the end
of the period.

Cn

Prev discussion issued 1035 am cdt Thu may 25 2017
discussion...

pressure gradient kicking up to the west and expect south winds to
increase to 15 to 20 mph over at least western half of cwa. Dry
cloud free airmass will easily warm 10 to 15 degrees from 10 am
readings with aftn highs reaching mid to upper 80s. No update
needed. 07
prev discussion... Issued 311 am cdt Thu may 25 2017
discussion...

unseasonably cool temperatures this morning with 3 am temperatures
in the lower 50s across several locations and even upper 40s
across portions of SW ar. Temperatures across northeast texas are
staying up a bit due to light southeast winds which were already
returning along the backside of a sfc ridge axis that will be
shifting east of our region later today. This ridge axis will
already be east of the miss river by noon today and with low level
cyclogenesis taking place in the lee of the rockies, a strong
pressure gradient will develop across the southern plains. So much
so that we will hoist another lake wind advisory today for our
western half which will include extreme northwest louisiana from
16z thru 00z.

Our departing trough of low pressure which was responsible for the
rainfall on Tue and the cooler weather across our entire region
has moved well east of the area this morning and taking its place
will be weak upper ridging moving into the plains. The increasing
southerly wind today will aid the rapid warmup of some 30 to 40
degrees by this afternoon. Moisture will return rapidly as well in
the form of low level cloud cover late tonight across our western
half with some cirrus overspreading the region as well. The result
will be lows Friday morning some 15 degrees warmer than what we
see this morning and daytime highs on Friday approaching 90
degrees. The strong pressure gradient will remain in place for
Friday as well with another lake wind advisory likely becoming
necessary areawide.

If there has been any change to the forecast for the weekend its
to delay the onset of precipitation. Medium range progs are in
descent agreement that the upper ridge centered across the
northern gulf will hold out a little longer which will delay the
upper trough to our west from moving into the plains. Have removed
all mention of precip for the day Saturday but with the trough
approaching the region Saturday night into Sunday, have increased
pops to likely categories across our northern third for Sat night
and high end chance pops across all but our northern zones for
Sunday. The atmosphere will be extremely unstable across the
middle red river valley of northeast texas, southeast oklahoma and
southwest arkansas Saturday afternoon and overnight but it
appears that a capping inversion should hold on through much of
the day, at least until Saturday evening into the overnight hours.

Cape values are progd to be over 5000 j kg with 700-500mb lapse
rates above 8 deg c which would suggest once that cap is broken,
explosive severe thunderstorm development will be likely overnight
sat across our northern most zones. This will continue to be
monitored as we approach the weekend. These precipitation chances
will be accompanied by a cold front which will begin moving into
our region Sunday night into early Monday with the front possibly
stalling across our southern zones or just south of our region
before returning north again by the middle of next week. This will
result in unsettled weather through much of the extended periods
of the forecast with a chance of showers and thunderstorms
continuing Tue through Thu of next week.

Prelims to follow... 13.

Preliminary point temps pops
Shv 85 68 90 74 0 0 0 10
mlu 83 66 90 72 0 0 0 10
deq 83 65 87 72 0 0 10 10
txk 84 68 89 73 0 0 10 10
eld 83 66 89 72 0 0 0 10
tyr 86 71 89 75 0 0 10 10
ggg 86 70 89 75 0 0 10 10
lfk 88 71 90 76 0 0 0 10

Shv watches warnings advisories
Ar... Lake wind advisory until 7 pm cdt this evening for arz050-051-
059-060-070-071.

La... Lake wind advisory until 7 pm cdt this evening for laz001-002-
010-017.

Ok... Lake wind advisory until 7 pm cdt this evening for okz077.

Tx... Lake wind advisory until 7 pm cdt this evening for txz096-097-
108>112-124>126-136>138-149>153-165>167.

09 07


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gilmer, Fox Stephens Field - Gilmer Municipal Airport, TX12 mi28 minS 13 G 2010.00 miFair80°F56°F45%1007.8 hPa
Longview - East Texas Regional Airport, TX14 mi30 minS 1310.00 miFair84°F60°F44%1007.4 hPa

Wind History from JXI (wind in knots)
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Last 24hrNW14
G23
NW8
G20
NW13
G17
NW7NW8
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NW6CalmCalmCalmCalmCalmCalmCalmS3S3CalmS3SE4SE6SE11S10
G14
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G17
SE9
G14
1 day agoCalmW4NW4CalmS5CalmCalmCalmNW11
G19
NW6CalmCalmCalmCalmW4W3W3W4W3CalmW7NW7
G17
NW12
G18
NW9
G20
2 days agoNE5NE7E5E6E5E5CalmNE3CalmCalmCalmCalmCalmNW3CalmCalmCalmCalmSW3NW3N4NW4NW4N5

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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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Midwest    EDIT
Geos

Wind Forecast for Shreveport, LA (14,3,4,5)
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Ground Weather Radar Station Shreveport, LA
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weather_mapweather_map weather_map

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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.