Monday, May21, 2018 L-36.com


Marine Weather and Tides
Frierson, LA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 6:10AMSunset 8:12PM Monday May 21, 2018 10:08 AM CDT (15:08 UTC) Moonrise 11:32AMMoonset 12:26AM Illumination 42% Phase: First Quarter Moon; Moon at 7 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 Frierson, LA
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location: 32.35, -93.63     debug


Area Discussion for - Shreveport, LA
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Fxus64 kshv 211236
afdshv
area forecast discussion
national weather service shreveport la
736 am cdt Mon may 21 2018

Aviation
For the 21 12z TAF period, a mixed bag of CIGS and vsbys this
morning with the main trouble spots across east texas with some
ifr lifr conditions. Elsewhere, MVFRVFR conditions prevail with
mostly mid and high clouds and very patchy fog. Conditions will
improve through late morning toVFR areawide as scattered shwrs
and tstms begin to develop into the afternoon as heating occurs.

Convection will gradually diminish by early evening with the loss
of heating. Winds will be lgt vrbl through much of the period but
a primary S SW component will prevail through much of the daytime
hours. Cloud cover will gradually decrease overnight with mid and
high clouds lingering after midnight. Some patchy low stratus and
fog may redevelop toward daybreak on Tuesday, but low confidence
precludes any mention in this current 12z TAF cycle. 19

Prev discussion issued 415 am cdt Mon may 21 2018
short term... Today through Tuesday night
ongoing convection this morning is mainly limited to parts of sw
arkansas as it continues drifting N ne. Elsewhere, abundant mid
and high clouds blanket much of the region with some spotty low
stratus across parts of east texas where a weak frontal boundary
continues to linger this morning as it extends north into western
arkansas. This boundary is expected to be the focus for additional
showers and thunderstorms later today as we begin to heat up and
destablize the atmosphere. Couple that with nearly 2 inch pwats,
and you have a good recipe for more of what we saw yesterday over
much of the region. More rainfall is certainly welcome as may has
been an unusually dry month in our part of the country. The other
benefit, of course, is dampening our high temperatures just a bit
with MAX readings today mainly in the mid to upper 80s to near 90
degrees over sections of north central louisiana where pops are a
little lower today. Much like yesterday, expect to see convection
diminish after sunset with heating loss. Overnight lows will fall
into the mid and upper 60s to near 70 degrees on Tuesday morning.

Weak upper ridging will try to nudge eastward from the plains on
Tuesday, but expect another day of scattered convection along the
southern periphery of the ridge axis. Temperatures will inch back
up a few degrees under the influence of the ridge but remain just
below 90 degrees for most areas due to the more extensive cloud
cover and scattered convection during the afternoon. The diurnal
trends will play a factor once again as convection will diminish
with the setting Sun on Tuesday evening with overnight lows ending
up on either side of 70 degrees. 19
long term... Wednesday through Monday
by the middle portion of the work week, 500mb analysis shows weak
ridging across the lower miss valley with an embedded inverted
trough centered across the middle red river valley into central la
and offshore the S la coast. This general pattern will remain
virtually unchanged through much of the remainder of the work week
which will work with daytime heating and higher pwat content to
produce scattered showers and thunderstorms each day.

Differences begin to plague the medium range when it comes to the
development of a closed low in the 500mb height fields across the
central gulf. The 00z ECMWF wants to bring this feature northward
towards the south central la gulf coast by Sat while the 00z gfs
just keeps a broad trough axis to the east of our region through the
upcoming weekend. The canadian is more in line with the development
of this gulf trough into something more significant than the gfs
suggests but keeps the feature east of our region through the
weekend as well. Made an attempt to blend model pops for late in the
work week into the upcoming weekend which would keep the higher pops
across our eastern most zones but confidence is not there to go any
higher than chance pops attm.

Did not stray too far from MOS temps, especially during the
overnight hours through the extended but did shave MOS daytime highs
for late in the extended period due to the above mentioned
parameters.

13

Preliminary point temps pops
Shv 87 70 90 71 50 20 40 20
mlu 90 69 90 70 30 20 40 20
deq 85 66 88 66 30 20 30 20
txk 84 68 87 69 50 20 40 20
eld 87 67 88 68 50 20 40 20
tyr 85 69 87 70 50 10 40 10
ggg 85 69 88 69 50 20 40 10
lfk 86 68 89 70 50 20 30 20

Shv watches warnings advisories
Ar... None.

La... None.

Ok... None.

Tx... None.

19 13


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Barksdale Air Force Base, LA11 mi73 minSSW 310.00 miMostly Cloudy74°F66°F78%1017.4 hPa
Shreveport, Shreveport Regional Airport, LA13 mi73 minSSW 410.00 miOvercast75°F69°F82%1017.4 hPa
Shreveport, Shreveport Downtown Airport, LA14 mi16 minWSW 410.00 miFair79°F68°F69%1017 hPa

Wind History from BAD (wind in knots)
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Last 24hrSW4SE9S8S6SE5S4W17
G27
CalmW11S5S5CalmSE3W4N4CalmSE5SE3SW4SE3CalmCalmS3SW3
1 day agoSW13S10S10S11S12
G17
SW9S10S9S8S7E5SE3SE5SE7S7S7S6SW5SW3SW4S5S3SW6S7
2 days agoSE6SE6SE7SE7SE5S11S6S6S8SE5SE5SE6S5S10S9S6S6SE6S6S7S6S7S10SW11

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 Midwest    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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Shreveport, LA (11,2,3,4)
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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.