Area Forecast Discussion
Issued by NWS Shreveport, LA

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

000
FXUS64 KSHV 290122
AFDSHV

Area Forecast Discussion
National Weather Service Shreveport LA
822 PM CDT WED SEP 28 2016

.AVIATION...
For the 29/00Z terminal forecast period expecting VFR flight
categories with patchy high cirrus around 25 kft at times and
possibly some brief scattered clouds around 4 kft with turbulent
mixing with cold frontal passage as winds shift. Surface winds
will be light and variable to light West less than 6
knots...becoming Northerly 5-10 knots as the boundary moves into
Northeast Texas and Southwest Arkansas near 29/05-29/06Z and
along and near the Interstate 20 corridor between 29/08Z-29/10Z
over East Texas and North Louisiana...and for Deep East Texas and
lower parts of Northwest and North Central Louisiana around
29/12Z. The surface winds will be more gusty during the late
morning into the middle of the afternoon as the pressure gradient
tightens as high pressure builds into the region. /06/

&&

.PREV DISCUSSION... /issued 342 PM CDT WED SEP 28 2016/

DISCUSSION...
A broad upper trough will become cut off over the middle Ohio
River Valley while an upper ridge builds over the Plains. The
resulting dry northwest flow aloft will result in a general
persistence forecast for much of the next week with mostly clear
to partly cloudy skies, cool mornings, and warm afternoons. A cold
front currently in Oklahoma and Arkansas will quickly move across
our area by sunrise Thursday morning. The pressure gradient will
tighten slightly with the front increasing northerly winds. The
resulting cold air advection will should keep daytime highs near
or below 80 degrees F and overnight lows in the low to mid 50s
Thursday night/Friday morning.

The weather will likely be rather quiet through the weekend.
Temperatures will gradually warm back into the mid to upper 80s by
the beginning of next week. The pattern aloft will shift as the
Ohio Valley trough opens and merges with the westerlies. A digging
trough over the Great Basin should kick the upper ridge eastward
and transition the flow aloft to southwesterly. Deep layer
moisture is expected to slowly increase as the upper trough and a
Pacific cold front approach from the west bringing showers and
thunderstorms back into the forecast for late Tuesday and into
Wednesday.

/09/

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  59  80  55  82 /   0   0   0   0
MLU  58  80  55  80 /   0   0   0   0
DEQ  53  77  53  79 /   0   0   0   0
TXK  55  77  55  79 /   0   0   0   0
ELD  55  76  53  79 /   0   0   0   0
TYR  58  78  55  79 /   0   0   0   0
GGG  58  79  55  80 /   0   0   0   0
LFK  60  81  56  81 /   0   0   0   0

&&

.SHV Watches/Warnings/Advisories...
AR...None.
LA...None.
OK...None.
TX...None.
&&

$$

06/09



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.