Area Forecast Discussion
Issued by NWS Shreveport, LA

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554
FXUS64 KSHV 230330
AFDSHV

Area Forecast Discussion
National Weather Service Shreveport LA
930 PM CST Sun Jan 22 2017

.UPDATE...
Trends running warm under the clouds

&&

.DISCUSSION...
The cloudy skies are working quickly Eastward now with colder
temps by daybreak with sky clear and winds slacking, our dew
points are in the upper 30s ands lower 40s and may fall more over
night in the wind. The gusts are slacking as planned earlier with
the Eastern Texas counties dropping out of the Lake wind advisory
this past hour. The remainder will expire after midnight with
skies expected to be clear and winds diminishing there too. /24/

&&

.PREV DISCUSSION... /issued 513 PM CST Sun Jan 22 2017/

AVIATION...
Rain and showers are rapidly diminishing across Northern Louisiana
and Southern Arkansas this evening and should be completely east
of our terminal airspace after 03z or so. Some ceilings have
become MVFR underneath the precipitation...TXK and ELD terminals
and MLU will likely follow suite but expect gradual clearing from
northwest to southeast across the terminal airspace through the
overnight hours. Winds will also decouple overnight tonight with
gusts subsiding across our eastern most terminal locations after
06z.

13

PREV DISCUSSION... /issued 418 PM CST Sun Jan 22 2017/

DISCUSSION...
Upper level closed low pressure system continued to spin over
extreme Northeast Louisiana and Southeast Arkansas with its center
over Central Mississippi. Moisture wrapping around the back side
of the system was helping produce a large area of showers and
isolated thunderstorms. On the surface a large associated surface
low pressure system covered much of the Southeast States and
was providing a tight pressure gradient over the central sections
of the country since surface high pressure covered much of the
plains and into West Texas. Will keep the lake wind advisory in
effect until 9 PM CST for the entire Four States Area and
the Eastern half of the region from 9 PM - 1 AM CST Monday morning
since the pressure gradient will still be tight as the surface low
pressure system shifts East along with the upper level low
pressure center. The winds will taper off near midnight and into
the early morning hours Monday. Wrap around cloud cover will
decrease as drier air associated with surface high pressure and
ridging aloft into the start of the work week. Temperatures will
also warm into the week as the surface and ridge of high pressure
move East allowing more southerly winds. A large and broad trough
of low pressure drops down across the western 2/3rds of the
country during the first half of the week which should keep any
rain chances for our forecast area confined to the more southern
zones for late Tuesday. The forecast area will remain on the
Southern axis of the upper trough aloft resulting a nearly zonal
flow for late week.

Boaters venturing out tonight should be very cautious due to the
rough chop on area lakes, rivers and bayous. Small boats will be
more prone to capsizing. High profile vehicles will also be
affected by the Northwest to North winds.  /06/

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  43  64  47  74 /  10   0   0  10
MLU  44  61  42  70 /  30   0   0  10
DEQ  37  61  40  70 /  10   0   0  10
TXK  40  62  44  71 /  10   0   0  10
ELD  41  61  42  70 /  30   0   0  10
TYR  41  67  49  74 /  10   0   0  10
GGG  42  64  47  74 /  10   0   0  10
LFK  43  68  48  77 /  10   0   0  10

&&

.SHV WATCHES/WARNINGS/ADVISORIES...
AR...Lake Wind Advisory until 1 AM CST Monday for ARZ060-061-071>073.

LA...Lake Wind Advisory until 1 AM CST Monday for LAZ001>006-010>014-
     017>022.

OK...None.
TX...None.
&&

$$

24/13/06



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