623
FXUS64 KEWX 112327
AFDEWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
627 PM CDT FRI SEP 11 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 618 PM CDT FRI SEP 11 2026
- LOW RAIN CHANCES REMAIN THROUGH EARLY THIS EVENING FROM THE
NORTHERN HILL COUNTRY INTO PORTIONS OF THE I-35 CORRIDOR AND
COASTAL PLAINS.
- A HEAT ADVISORY HAS BEEN ISSUED FROM NOON TO 7 PM ON SATURDAY
OVER THE I-35 CORRIDOR AND COASTAL PLAINS. ABOVE NORMAL
TEMPERATURES CONTINUE INTO NEXT WEEK AND ADDITIONAL HEAT
PRODUCTS MAY BE NEEDED.
- MAINLY DRY CONDITIONS THIS WEEKEND INTO NEXT WEEK, EXCEPT FOR
SOME LOW RAIN CHANCES OVER THE COASTAL PLAINS IN THE AFTERNOONS.
UPDATE
ISSUED AT 540 PM CDT FRI SEP 11 2026
HAVE EXTENDED POPS THROUGH THIS EVENING (LASTING PERHAPS AS LATE
AS ABOUT 8 TO 10 PM) FOR LOCATIONS PRIMARILY TO THE EAST OF THE
I-35 CORRIDOR GIVEN THE PROGRESSION AND COVERAGE OF THE CURRENT
ACTIVITY ACROSS THE REGION.
SHORT TERM
(TONIGHT THROUGH SATURDAY NIGHT)
ISSUED AT 1240 PM CDT FRI SEP 11 2026
ONE MORE DAY OF LOW RAIN CHANCES REMAINS TODAY BEFORE RELATIVELY DRY
CONDITIONS TAKE HOLD INTO THE MIDDLE OF NEXT WEEK. NORTHWESTERLY
FLOW ALOFT AND ANY BOUNDARIES FROM SHOWERS/STORMS EARLIER THIS
MORNING COULD LEAD TO ADDITIONAL ACTIVITY THIS AFTERNOON AND EVENING
MAINLY FROM THE HILL COUNTRY INTO THE I-35 CORRIDOR AND COASTAL
PLAINS NORTH AND EAST OF THE SAN ANTONIO METRO. COVERAGE SHOULD BE
ISOLATED OR WIDELY SCATTERED AS MID-LEVEL RIDGING BEGINS TO BUILD
EAST TODAY AND BE OVER MUCH OF THE AREA ON SATURDAY. WHILE AN
ISOLATED SHOWER OR STORM CANNOT BE RULED OUT SATURDAY, CHANCES ARE
TOO LOW TO INCLUDE ANY MENTIONABLE PRECIPITATION KEEPING THE
FORECAST DRY.
ABOVE NORMAL TEMPERATURES CONTINUE THROUGH THE WEEKEND WITH HIGHS IN
THE UPPER 90S TO UP TO 105 DEGREES, HIGHEST ALONG THE RIO GRANDE. A
FEW ISOLATED LOCATIONS MAY SEE HEAT INDICES UP TO 108 DEGREES IN THE
COASTAL PLAINS THOUGH LATE THIS AFTERNOON. FOR SATURDAY, A SLIGHT
INCREASE IN TEMPERATURES FROM TODAY IS EXPECTED WITH THE BROADER
RIDGING OVER THE AREA. MAXIMUM HEAT INDEX VALUES WILL BE CLOSE OR
JUST ABOVE 108 DEGREES ALONG AND EAST OF I-35 PUSHING US TOWARDS THE
HEAT ADVISORY THRESHOLD. GIVEN WE'RE HEADING INTO THE WEEKEND AND
TEMPERATURES CONTINUE TO BE WELL ABOVE AVERAGE, HAVE OPTED TO ISSUE
A HEAT ADVISORY FOR SATURDAY FROM 12 PM TO 7 PM. ADDITIONAL HEAT
PRODUCTS MAY BE NEEDED SUNDAY OR EVEN NEXT WEEK.
LONG TERM
(SUNDAY THROUGH NEXT FRIDAY)
ISSUED AT 1240 PM CDT FRI SEP 11 2026
AS MENTIONED IN THE SHORT TERM DISCUSSION, HOT CONDITIONS CONTINUE
SUNDAY THROUGH AT LEAST EARLY NEXT WEEK. RIDGING SHIFTS FURTHER
NORTH SUNDAY, THEN GRADUALLY SHIFTS EASTWARD TOWARDS THE LOWER
MISSISSIPPI AND TENNESSEE VALLEYS MONDAY. THIS WILL BRING BACK A
SLIGHT INCREASE IN MOISTURE, MOST NOTABLY IN THE EASTERN HALF OF THE
FORECAST AREA. HIGH TEMPERATURES WILL CONTINUE TO HOVER AROUND FROM
THE UPPER 90S TO AROUND 102 DEGREES THROUGH TUESDAY, AND HEAT INDEX
VALUES MAY AGAIN APPROACH OR EXCEED HEAT ADVISORY CRITERIA DURING
THIS TIME DEPENDING ON LOCATION. THE MAIN MESSAGE REMAINS THAT
SUMMER IS NOT OVER AND TO CONTINUE TO PRACTICE HEAT SAFETY.
OUTSIDE OF SOME SEABREEZE SHOWERS OR THUNDERSTORMS EACH DAY IN THE
LATE AFTERNOONS, MAINLY DRY CONDITIONS CONTINUE ACROSS SOUTH CENTRAL
TEXAS.
AVIATION
(00Z TAFS)
ISSUED AT 618 PM CDT FRI SEP 11 2026
ISOLATED TO SCATTERED CONVECTION IN PLACE OVER PORTIONS OF THE
REGION THIS AFTERNOON AND INTO THE EARLY EVENING, PRIMARILY ALONG
AND TO THE NORTH OF THE I-10 CORRIDOR. CONVECTION MOSTLY WENT
AROUND KAUS WITH ONLY LIGHT RAIN TO IMPACT THE SITE DURING THE
NEXT HOUR OR TWO. WE'LL ALSO MONITOR OUTFLOW AND ONGOING SHOWERS
TO THE NORTH OF SAN ANTONIO BUT ACTIVITY MAY FADE ONCE IT DOES
APPROACH KSAT AND/OR KSSF. FOR NOW, INSERTED VCSH AT THOSE SITES.
KDRT IS CLEAR WITH NO RAIN IN SITE, IT WILL REMAIN MOSTLY CLEAR
THROUGHOUT THE NIGHT. THE I-35 SITES MAY SEE PATCHY LOW CLOUD
DEVELOPMENT INTO EARLY TO MID-MORNING BUT AT THIS TIME, I'LL
KEEP THE AREAL COVERAGE SCATTERED AND VFR. TOMORROW AFTERNOON IS
EXPECTED TO SEE SOME FAIR WEATHER CUMULUS BUT RAIN COVERAGE IS TO
REMAIN LOWER IN COMPARISON TO THIS AFTERNOON'S ACTIVITY. WINDS
WILL REMAIN LIGHT TO MODERATE, GENERALLY OF AROUND 12 KT OR LESS
BUT OCCASIONAL GUSTS COULD BE HIGHER, ESPECIALLY AROUND OUTFLOW
AND THE ONGOING SHOWER/CONVECTIVE ACTIVITY.
PRELIMINARY POINT TEMPS/POPS
AUSTIN CAMP MABRY 77 103 77 101 / 10 10 0 0
AUSTIN BERGSTROM INTL AIRPORT 77 102 77 100 / 20 10 0 0
NEW BRAUNFELS MUNI AIRPORT 75 101 76 100 / 20 10 0 0
BURNET MUNI AIRPORT 75 100 74 98 / 10 0 0 0
DEL RIO INTL AIRPORT 79 103 79 101 / 0 0 0 0
GEORGETOWN MUNI AIRPORT 77 102 77 100 / 20 10 0 0
HONDO MUNI AIRPORT 75 101 75 99 / 10 10 0 0
SAN MARCOS MUNI AIRPORT 75 101 76 100 / 20 10 0 0
LA GRANGE - FAYETTE REGIONAL 77 101 77 100 / 30 10 0 10
SAN ANTONIO INTL AIRPORT 78 101 78 99 / 10 10 10 0
STINSON MUNI AIRPORT 78 102 79 101 / 10 10 10 0
EWX WATCHES/WARNINGS/ADVISORIES
HEAT ADVISORY FROM NOON TO 7 PM CDT SATURDAY FOR TXZ173-191>194-
205>209-220>225.
UPDATE...62
SHORT TERM...27
LONG TERM....27
AVIATION...62
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