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 251139
AFDSHV

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
639 AM CDT WED MAR 25 2015

.DISCUSSION...

THIS MORNING...THE FOUR STATE REGION WAS UNDER THE INFLUENCE OF
SURFACE HIGH PRESSURE TO THE EAST AND LARGE SURFACE LOW PRESSURE
SYSTEM TO THE WEST...WITH ONE CENTER OVER THE PAN HANDLES OF
TEXAS AND OKLAHOMA...CONNECTED BY A DRY LINE ACROSS WEST TEXAS TO
ANOTHER SURFACE LOW PRESSURE AREA ACROSS THE BIG BEND REGION.
THE DEPARTING UPPER DISTURBANCE THAT HELPED PRODUCE SHOWERS AND
THUNDERSTORMS OVER NORTHERN ZONES OVERNIGHT LEFT A WEAK BOUNDARY
OVER PARTS OF NORTHEAST TEXAS...SOUTHEAST OKLAHOMA...AND SOUTHWEST
ARKANSAS. THIS WILL SHIFT NORTH TODAY AS A WARM FRONT THAT
WILL ARCH INTO THE SURFACE LOW CENTERED OVER WEST OKLAHOMA.
RADAR THIS MORNING INDICATED A FEW WEAK SHOWERS OVER PARTS OF
NORTHEAST TEXAS NEAR THIS FEATURE. THE UPPER LEVEL FLOW IS
SLIGHTLY SOUTHWEST IN WAKE OF THE DEPARTING DISTURBANCE AND TO THE
WEST AN AMPLIFYING UPPER LEVEL TROUGH OF LOW PRESSURE CONTINUED TO
TAKE SHAPE ACROSS THE ROCKIES. THE UPPER TROUGH WILL SWING EAST
TODAY AND OVERNIGHT SENDING THE SURFACE LOW NORTHEAST INTO THE
PLAINS WITH ANOTHER ACROSS NORTH TEXAS AND SOUTH TEXAS. THE COLD
FRONT ASSOCIATED WITH THE SYSTEM WILL MOVE EAST INTO THE FORECAST
AREA AROUND MIDNIGHT INCREASING SHOWERS AND THUNDERSTORMS THAT
WILL DEVELOP ALONG AND AHEAD OF THE BOUNDARY AS IT QUICKLY
OVERTAKES THE DRY LINE OVER TEXAS. THE FRONT WILL BE NEARING A
TEXARKANA ARKANSAS AND TYLER TEXAS LINE NEAR DAYBREAK...AND OUT OF
THE FOUR STATE REGION DURING THE MIDDLE TO LATE AFTERNOON
THURSDAY. LOCALLY HEAVY RAINFALL WILL BE POSSIBLE FOR PARTS OF THE
AREA BETWEEN MIDNIGHT AND 9 AM THURSDAY...AND THERE MAY BE
ISOLATED STRONG TO SEVERE THUNDERSTORMS...HOWEVER THE MORE
ELEVATED SEVERE THREAT WILL BE TO THE NORTH OF THE REGION.
IN THE WAKE OF THE LONGWAVE TROUGH OF LOW PRESSURE...EXPECT
HIGH PRESSURE ON THE SURFACE AND ALOFT TO BUILD INTO THE REGION.
THE DRY NORTHWEST PATTERN ALOFT WILL KEEP THE REST OF THE WEEK AND
WEEKEND DRY. COOL TEMPERATURES WILL PREVAIL FROM THURSDAY INTO
FRIDAY NIGHT...THEN A WARMING WILL COMMENCE AS HIGH PRESSURE
RETURNS SOUTHERLY WINDS ON THE SURFACE PLENTY OF SUNSHINE RETURNS.
THE UPPER RIDGE OVER THE WESTERN SECTIONS OF THE COUNTRY BEGINS TO
BREAK DOWN EARLY NEXT WEEK AS A SERIES OF DISTURBANCES MOVE INTO
THE SYSTEM. WILL RETURN RAIN CHANCES THROUGH MID WEEK. /06/

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  81  57  65  43 /   0  50  50  10
MLU  79  58  67  41 /   0  20  60  10
DEQ  78  49  61  35 /  20  70  20  10
TXK  80  53  63  40 /  10  70  30  10
ELD  79  57  64  39 /  10  50  60  10
TYR  81  55  63  42 /   0  60  30  10
GGG  82  55  64  40 /   0  60  30  10
LFK  84  58  66  46 /   0  30  60  10

&&

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

$$

06



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