000
FXUS64 KEWX 132027
AFDEWX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
327 PM CDT MON MAY 13 2013

.SHORT TERM (TONIGHT THROUGH TUESDAY NIGHT)...
UPPER LOW OVER BAJA CALIFORNIA THIS AFTERNOON WILL SLOWLY PUSH
NORTHEAST INTO THE SOUTHERN PLAINS BY WEDNESDAY. THIS FEATURE WILL
BECOME AN UPPER WAVE LATE TUESDAY AS IT APPROACHES WESTERN AND
CENTRAL TEXAS. AT THE SURFACE...SOUTHERLY FLOW HAS BEGUN ACROSS
THE AREA THIS AFTERNOON AS HIGH PRESSURE CENTERED OVER THE GULF
OF MEXICO STATES MOVES TO THE EAST. BY LATE TUESDAY
AFTERNOON...SHOWERS AND THUNDERSTORMS WILL FORM ACROSS THE
NORTHERN MEXICAN MOUNTAINS AS UPPER SHORT WAVES PULSES TRAVERSE
THE AREA. THESE STORMS WILL CONTINUE TO MOVE EASTWARD AND ACROSS
THE RIO GRANDE PLAINS BETWEEN 7 TO 11 PM TUESDAY EVENING...ALONG
THE I-35 CORRIDOR...FROM MIDNIGHT TO ABOUT 4 AM WEDNESDAY AND ALONG
AND EAST OF HIGHWAY 183...FROM 5 TO 9 AM WEDNESDAY MORNING. SOME OF
THESE STORMS COULD BECOME STRONG AS THEY MOVE ACROSS THE RIO GRANDE
PLAINS TUESDAY EVENING. STORM TOTAL RAINFALL AMOUNTS ARE EXPECTED
TO GENERALLY BE FROM ONE TENTH TO ONE QUARTER INCH ALONG AND WEST
OF HIGHWAY 83...ONE QUARTER TO ONE HALF INCH BETWEEN HIGHWAY 83
AND HIGHWAY 183 AND ONE HALF TO THREE QUARTER INCH ALONG AND EAST
OF HIGHWAY 183. LOWS TONIGHT WILL BE IN THE MID 50S ACROSS THE
HILL COUNTRY TO MID 60S ACROSS THE RIO GRANDE PLAINS.

&&

.LONG TERM (WEDNESDAY THROUGH MONDAY)...
AS THE UPPER TROUGH MOVES NORTHEASTWARD ON WEDNESDAY...DAYTIME
HEATING AND CONVECTIVE INSTABILITY WILL RESULT IN A SECOND ROUND
OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON AND PART OF THE
EVENING FROM EAST OF A LLANO TO LOCKHART TO HALLETTSVILLE LINE.
WEATHER CONDITIONS WILL BEGIN TO IMPROVE WEDNESDAY EVENING THROUGH
THE UPCOMING WEEKEND AS AN UPPER LEVEL RIDGE DEVELOPS AND
DOMINATES OUR REGION FOR COUPLE OF DAYS. AN UPPER LEVEL TROUGH IS
EXPECTED TO MOVE ACROSS THE FOUR CORNERS REGION INTO THE HIGH
PLAINS BY THE WEEKEND...KEEPING THE STORM TRACK WELL TO THE NORTH.
A WARMING TREND IS ON THE WAY FOR THE LATER PART OF THE WEEK AND
INTO THE WEEKEND WITH HIGHS IN THE LOWER 90S ACROSS THE I-35
CORRIDOR TO NEAR 102 OVER PARTS OF THE RIO GRANDE PLAINS.

&&

.PRELIMINARY POINT TEMPS/POPS...
AUSTIN CAMP MABRY              59  86  66  83  67 /  -   20  50  40  20
AUSTIN BERGSTROM INTL AIRPORT  55  85  64  82  66 /  -   20  50  40  20
NEW BRAUNFELS MUNI AIRPORT     57  85  64  84  66 /  -   20  50  30  10
BURNET MUNI AIRPORT            58  85  64  83  66 /  -   20  50  30  20
DEL RIO INTL AIRPORT           66  87  69  92  72 /  -   20  40  -   -
GEORGETOWN MUNI AIRPORT        57  84  64  81  66 /  -   20  50  40  20
HONDO MUNI AIRPORT             59  86  66  86  68 /  -   30  50  10  10
SAN MARCOS MUNI AIRPORT        58  83  65  81  67 /  -   20  50  30  20
LA GRANGE - FAYETTE REGIONAL   61  85  67  82  68 /  -   20  40  40  20
SAN ANTONIO INTL AIRPORT       60  84  66  83  68 /  -   30  50  20  10
STINSON MUNI AIRPORT           60  84  66  84  67 /  -   30  50  20  10

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$

MESOSCALE/AVIATION...08
SYNOPTIC/GRIDS...17
PUBLIC SERVICE/DATA COLLECTION...33