Area Forecast Discussion
Issued by NWS Shreveport, LA

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000
FXUS64 KSHV 251721
AFDSHV

Area Forecast Discussion
National Weather Service Shreveport LA
1221 PM CDT Sun Jun 25 2017

.AVIATION...
Waning scattered -SHRA were near kshv, klfk and affecting kmlu,
with a continued declining trend expected throughout the
afternoon. Elected to insert a VCSH at kshv and klfk and a TEMPO
group for kmlu for a few hours. Otherwise, VFR conditions have
prevailed across the terminals early this afternoon. Thickest VFR
CIGS were noted along and south of the Interstate-20 corridor
thus, ktxk had only FEW cloud cover. VFR CIGS will continue to
scatter out throughout the afternoon whilst relatively light east-
southeast winds ensue /5-8 kts/. Tonight, light east- southeast
or variable and calm winds may occur for some terminals. A
slightly drier airmass across the region will lead to nil concerns
for fog/low cloud development overnight.

&&

PREV DISCUSSION... /issued 1054 AM CDT Sun Jun 25 2017/

.DISCUSSION...
A band of showers currently extends from along the Interstate 20
corridor in North Louisiana northeast through Mississippi,
Alabama, and into Georgia. These showers are generally co-located
with the axis of an upper level trough. Farther southwest, heavier
showers and thunderstorms associated with a weak frontal boundary
near the Gulf Coast will drift northward into Deep East Texas.
Rain chances will become increasingly more confined to areas south
of Interstate 20 as the day progresses, so the PoP grids were
adjusted accordingly.

The dense cloud cover and showers along the I-20 corridor have
slowly warming somewhat in these areas, while temperatures have
warmed much faster farther north where cloud cover is considerably
less. The high temperature and hourly temperature grids for today
were also adjusted to reflect these trends. Overall, the updates
were relatively minor.

Updated text products have been sent.

CN

&&

PREV DISCUSSION... /issued 341 AM CDT Sun Jun 25 2017/

DISCUSSION...
Drier airmass continues to gradually work its way swd into the
area today. Although sfc front is located just south of I-20, expecting
isold convection to develop south of 850 mb frontal boundary,
which is just north of I-20. However, with isold showers
developing recently well north of elevated front, and even north
of cwa, will add 20 percent chance of showers across northern
portions of area, for the morning hours. Dewpoints in lower 60s
just north of cwa will also shift south, with overnight lows
falling into 60s for much of area by tonight. Broad upper ridge
help keep pattern in place thru mid week, confining any low pops
to southern portions of area. Zonal flow to continue across much
of rest of conus. Strong short waves movg across upper midwest
later in week will serve to break down upper ridge and pops will
increase as cooling aloft steepens lapse rates, and increased
upper ridging over se states helps pump gulf moisture back into
region. Seasonal temps expected in upper 80s to lower 80s
beginning Tuesday, and overnight lows will rebound back to around
the lower 70s by later in the week.

/07/

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  86  65  88  68 /  20  10  10  10
MLU  87  63  88  67 /  20  10  10  10
DEQ  88  62  86  62 /  20  10  10  10
TXK  87  64  87  67 /  20  10  10  10
ELD  87  61  87  64 /  20  10  10  10
TYR  86  66  86  69 /  20  20  20  10
GGG  86  65  88  68 /  20  10  20  10
LFK  85  68  87  69 /  40  20  20  10

&&

.SHV WATCHES/WARNINGS/ADVISORIES...
AR...None.
LA...None.
OK...None.
TX...None.
&&

$$

29/09/07



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