Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
Blanchard, LA

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 6:41AMSunset 7:54PM Wednesday August 21, 2019 7:49 PM CDT (00:49 UTC) Moonrise 10:32PMMoonset 11:02AM Illumination 61% 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 Blanchard, LA
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location: 32.58, -94     debug


Area Discussion for - Shreveport, LA
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Fxus64 kshv 220041
afdshv
area forecast discussion
national weather service shreveport la
741 pm cdt Wed aug 21 2019

Update
Heat advisory in effect until 7 pm this evening has expired with
temps now slowly falling into the lower 90s, and aftn heat indices
Thursday expected to remain just under 105 degrees. Widely
scattered convection across mainly la portions of area will likely
dissipate in the next hour or two. 07.

Prev discussion issued 657 pm cdt Wed aug 21 2019
aviation...

mostlyVFR conditions expected thru the 23 00z fcst cycle. Widely
sct convection across northcentral la and eastern toledo bend area
will diminish by around 22 02 including the kmlu terminal area.

Any fog or low clouds very limited overnight except for kmlu and
klfk, with high MVFR CIGS briefly affecting ktyr and kggg btwn
22 12-15z. Best chance for TSTM development after 22 15z can be
expected at kmlu. Southerly winds 5 to 10 kts expected after
22 15z across most of the area. 07 .

Prev discussion... Issued 404 pm cdt Wed aug 21 2019
short term... Tonight through Thursday night
diurnal instability combined with weak ascent from the sea breeze
and a weak trough in the gulf of mexico has once again led to
scattered convection, mainly south of the forecast area. Farther
north, similar development has occurred along a weak cold front
across oklahoma and arkansas. The four state region is really
caught in between and is on the fringes of these areas. At best,
only isolated convective coverage is expected north of interstate
30 and across north central louisiana, but this activity should
quickly dissipate after sunset.

The upper level ridge that has dominated our weather and kept hot
conditions in place for much of the last week will finally weaken
considerably by Thursday morning. The center of the weakened ridge
will also be farther west over new mexico. The flow aloft will
become slightly better established and more zonal. A series of
shortwave troughs in the northern branch of the jet stream will
help to push a weak cold front currently over kansas and missouri
very slowly into the southern plains. Scattered convection will
likely develop once again along the front to the north and along
the coast in response to the sea breeze and the gulf trough. Low-
level southerly winds should help to bring the sea breeze
northward into the area. While the sea breeze convection should
once again dissipate after sunset Thursday night, a weak shortwave
moving across the southern plains could result in more convective
developing along the stalled front, which may affect southeast
oklahoma and extreme southwest arkansas into early Friday morning.

Increased cloud cover should keep daytime high temperatures near
today's levels, or possibly a degree or two cooler. Dewpoints
should also be very similar to today. Scattered instances of heat
index values near or above 105 degrees are expected on Thursday,
but they are not expected to be widespread. Therefore, the heat
advisory was not extended past this evening. However, with much of
the area just on the cusp of advisory criteria, a small increase
in temperatures may necessitate reissuing heat headlines.

Cn
long term... Friday through Tuesday night
weak flow aloft under broad upper ridging to be in place across our
region by the end of the work week. Convection will remain possible
each day, as weak upper low across the NRN gulf tx-la coast and a
stalled cold front trof to our NE sandwich the region. Another trof
will move across the central high plains Saturday Sunday, allowing
for more widespread convection. Temps to run in the low to mid 90s,
which will be a relief from previous days.

Trof to move E Monday Tuesday, allowing the ridge to reinforce
itself over W tx. This will reduce our chances for convection to
isold at best for early next week, with temps likely recovering into
the mid and perhaps even upper 90s. 12

Preliminary point temps pops
Shv 77 97 76 95 20 30 10 30
mlu 74 94 74 93 20 50 10 40
deq 75 95 74 94 20 30 20 30
txk 76 96 75 92 20 30 10 30
eld 75 94 74 93 20 40 10 40
tyr 77 97 75 95 0 10 0 20
ggg 77 97 75 96 10 20 10 20
lfk 74 96 75 93 10 20 0 30

Shv watches warnings advisories
Ar... None.

La... None.

Ok... None.

Tx... None.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Shreveport, Shreveport Regional Airport, LA13 mi1.9 hrsESE 710.00 miPartly Cloudy95°F71°F46%1013 hPa
Shreveport, Shreveport Downtown Airport, LA14 mi56 minSSE 710.00 miFair94°F68°F43%1012.9 hPa
Marshall, TX17 mi74 minno data10.00 miFair92°F68°F45%1014.2 hPa
Barksdale Air Force Base, LA18 mi1.9 hrsSE 410.00 miFair95°F69°F44%1013.6 hPa

Link to 5 minute data for KSHV

Wind History from SHV (wind in knots)
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Last 24hrSW3SE4CalmSE4S4S4SE3CalmCalmSW5S3S3S4W74NW354W433SE4E7SE7
1 day agoSE4S4S3S7SE7S5CalmSE3SE3S3CalmCalmS5SW4SW5Calm5CalmCalmSW4E10SW7S7S3
2 days agoS10S7--S7S6S5S5SE5S4S4SE3S4SW5SW6SW10SW65S7Calm4CalmCalmSE4SE5

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

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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.