Thursday, June20, 2019 L-36.com


Marine Weather and Tides
Frierson, LA

Version 3.4
NOTICE
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 6:06AMSunset 8:26PM Thursday June 20, 2019 8:55 AM CDT (13:55 UTC) Moonrise 10:15PMMoonset 8:01AM Illumination 91% Phase: Waning Gibbous; Moon at 18 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
    EDIT      (on/off)   Help


7 Day Forecast for Marine Location Near Frierson, LA
   Hourly   EDIT   Help
location: 32.35, -93.63     debug


Area Discussion for - Shreveport, LA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus64 kshv 201203
afdshv
area forecast discussion
national weather service shreveport la
703 am cdt Thu jun 20 2019

Aviation
For the 20 12z TAF period, some patchy low stratus will continue
to affect some sites through mid to late morning before this low
cloud cover lifts into a CU field by this afternoon. Some mid and
high clouds will also be passing through our terminal airspace as
these lingering convective debris clouds gradually exit with the
departing upper level trough. Any intermittent ifr MVFR CIGS this
morning will becomeVFR closer to midday as they scatter out with
the CU field gradually dissipating by early evening. Expect clear
to mostly clear skies through much of the evening and overnight,
but low clouds are expected to return toward daybreak with MVFR
cigs likely at most sites near the end of the period. Southerly
winds will prevail from around 6-12 kts throughout much of the
period.

19

Prev discussion issued 431 am cdt Thu jun 20 2019
short term... Today through Friday
the early morning MCS continues to quickly shift E of the region
this morning while weakening, as dry slotting has spread e
beneath the shortwave trough over ERN ar ERN la. The morning
mesoscale analysis indicates that a residual cold pool has pushed
sse into deep E tx into cntrl la, with 2-3 mb 3 hr pressure rises
over ncntrl la suggesting that this bndry will continue to spill
se a little more away from the region before becoming stationary.

However, the lack of pressure rises over deep E tx suggests that
the bndry has stalled, with a discernible instability gradient
noted over cntrl and SE tx where mlcapes still range from near to
in excess of 2000 j kg. In fact, a small cluster of strong to svr
convection has recently developed near and just SE of act, where
moisture convergence has increased near the far WRN periphery of
the sfc bndry. While the short term global models have failed to
pick up on this convection, the cams have to some extent and
suggest the convection continuing to build SE this morning near
this bndry instability gradient, even as SE winds return to deep e
tx to help nudge what's left of the bndry nwd. Thus, have
inserted slight chance pops this morning for portions of deep e
tx, while also maintaining isolated pops this morning for the far
ern zones of ncntrl la to account for any isolated convection that
may linger to start the period.

The cold pool leftover from the overnight MCS should gradually
modify today as ssw low level winds return, although strong
insolation should result in MAX temps near or slightly warmer than
what was observed Wednesday. Based on the fact that enough mixing
occurred in wake of Wednesday morning's cold pool erosion over the
region, have tried to tailor dewpoints today to something similar,
resulting in heat indices just shy of heat advisory criteria
across portions of E tx. However, with 09z dewpoints in the mid
and upper 70s this morning over the coastal bend of SE tx and much
of SRN la, these higher dewpoints should quickly expand nwd later
today and especially this evening, with enough of a pressure
gradient resulting in enough wind and low stratus development to
keep min temps from falling much (if not at all) into the mid 70s.

The short term progs continue to suggest ridging aloft will begin
to build and expand N tonight across la ar into the lower ms
valley, with the ridge slowly shifting E into the SE CONUS Friday.

As a result, enough of a deep srly flow on the backside of the
ridge may result in isolated seabreeze convection developing and
shifting N into portions of lower E tx ncntrl la during the
afternoon, as suggested by the cams as well as the 00z ECMWF and
gfs. Thus, have expanded slight chance pops a bit for these areas
just S of the i-20 corridor. With the ridge building N over the
region tonight through Friday, and given the fact that min temps
will be on the warmer side, have trended MAX temps Friday into the
mid 90s for much of the area, with limited mixing given the deeper
srly low level flow resulting in heat indices near the heat
advisory criteria across portions of E tx. Thus, later forecasts
will take into account observations and model trends for the
potential need of an advisory for portions of these areas Friday.

15
long term... Friday night through Wednesday night
the upper ridge axis will continue to shift farther eastward into
the SE CONUS to begin the period. Meanwhile, the next major upper
level trough will be shifting out of the rockies into the southern
plains to start the weekend. As a result, SW flow aloft will return
across our region with a slight chance of showers and thunderstorms
on Saturday afternoon mainly over our western zones. Otherwise, the
main weather story will be the intense heat and humidity which may
warrant heat advisory conditions over parts of the region through
the first half of the weekend.

By Sunday, the upper trough will shift a bit farther east into the
plains with increasing large scale ascent spreading farther across
our region. As the trough begins to accelerate SE late Sunday into
Monday, expect showers and thunderstorms to become more widespread
with some strong storms possible through the afternoon on Monday.

Although the trough will eventually shift eastward by Monday night
into Tuesday, rain chances will continue to linger through mid week
as an upper level ridge will slowly retrograde westward across the
gulf of mexico and build to our SW over northern mexico and western
texas. This will allow for a return to NW flow aloft over our area,
favoring better rain chances with disturbances riding around the
periphery of the upper ridge.

Temperatures will generally run near or just slightly below normal
during this more unsettled period from late in the weekend through
early to mid week.

19

Preliminary point temps pops
Shv 93 77 94 77 10 10 10 0
mlu 92 76 94 77 20 10 10 0
deq 90 74 92 75 10 10 0 0
txk 91 76 93 76 10 10 0 0
eld 91 75 93 76 10 10 10 0
tyr 93 77 94 77 10 10 10 0
ggg 92 77 94 77 10 10 10 0
lfk 94 77 94 77 20 10 20 0

Shv watches warnings advisories
Ar... None.

La... None.

Ok... None.

Tx... None.

19 15


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Barksdale Air Force Base, LA11 mi2 hrsSSW 710.00 miFair69°F69°F100%1010.6 hPa
Shreveport, Shreveport Regional Airport, LA13 mi2 hrsSSW 810.00 miOvercast70°F68°F93%1009.7 hPa
Shreveport, Shreveport Downtown Airport, LA14 mi63 minS 510.00 miFair73°F68°F84%1010.4 hPa

Wind History from BAD (wind in knots)
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
Last 24hrS8S7S7S9SW8SW10S14SW9S10S12
G19
S9S10S3SE3S5NW17S3S7S13S8S5SW6S7S6
1 day agoNW4NW7W4W7W8SW5NE3NE3W6W5W3SW4S4SE3SE4SE3SE3SE3CalmS3CalmSE5SW7NW14
2 days agoCalmCalmSW4S4SW4SW6SW8SW5S7W4CalmCalmSE4CalmS4S3CalmCalmCalmCalmCalmCalmCalmNW4

Tide / Current Tables for
   EDIT   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_A
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 (9,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Shreveport, LA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.