175
FXUS64 KEWX 260527
AFDEWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1227 AM CDT WED AUG 26 2026
..NEW SHORT TERM, LONG TERM, AVIATION
KEY MESSAGES
UPDATED AT 1217 AM CDT WED AUG 26 2026
- HEAT ADVISORY CONTINUES UNTIL 7 PM THIS EVENING FOR THE COASTAL
PLAINS, I-35 CORRIDOR, AND PORTIONS OF THE HILL COUNTRY.
- LOW TO MEDIUM RAIN AND STORM CHANCES FOR MOST AREAS THURSDAY AND
A SOME LOCATIONS ON FRIDAY. OTHERWISE, HOT AND DRY WEATHER
THROUGHOUT THE WEEK.
SHORT TERM
(TODAY THROUGH THURSDAY)
ISSUED AT 1217 AM CDT WED AUG 26 2026
WESTWARD MOVEMENT OF THE RIDGE WILL TAKE PLACE TODAY POSITIONING
SOUTH CENTRAL TEXAS UNDER MORE NORTHERLY OR NORTHWESTERLY FLOW
ALOFT BY THE EVENING. THIS HELPS US ONLY MILDLY IN THE TEMPERATURE
DEPARTMENT AS ANOTHER HOT DAY IS STILL FORECAST WITH HIGHS IN THE
100-105 DEGREE RANGE. THE LONG-STANDING HEAT ADVISORY WILL REMAIN
IN EFFECT THROUGH 7 PM TONIGHT WHICH INCLUDES THE COASTAL PLAINS,
I-35 CORRIDOR AND PORTIONS OF THE HILL COUNTRY. ADDITIONALLY,
LATE THIS AFTERNOON AND TONIGHT STILL TREND DRIER AS MOST GUIDANCE
INDICATES WEAKENING OR DISSIPATING SHOWER AND STORM ACTIVITY AS
IT APPROACHES OUR NORTHERN CWA. THE RIDGE JUST SLIGHTLY SHIFTS
FURTHER WEST ON THURSDAY BRINGING ALL OF THE AREA UNDER THE
NORTHWESTERLY FLOW. A FEW DISTURBANCES MAY DEVELOP AND MOVE SOUTH
INTO THE AREA WITH THE HIGHEST RAIN CHANCES BEGINNING THURSDAY
AFTERNOON AS A FRONT SLOWLY MOVES TOWARDS THE AREA. MOISTURE AND
PEAK HEATING WILL LIKELY ALLOW FOR SOME SHOWER AND THUNDERSTORM
DEVELOPMENT NEAR THIS FEATURE, THOUGH WE ARE NOT EXPECTING
WIDESPREAD RAIN ACROSS THE AREA. ANY CONVECTION THAT DOES MANAGE
TO DEVELOP WILL LIKELY BE HIGH-BASED AND WOULD POSE A GUSTY WIND
THREAT IN ANY OF THE STRONGER CELLS. DUE TO RAIN CHANCES AND
INCREASED CLOUD COVER THURSDAY, HIGH TEMPERATURES SHOULD DECREASE
A FEW DEGREES KEEPING US BELOW HEAT ADVISORY CRITERIA. HOWEVER,
DEPENDING ON WHERE AND WHEN STORMS DEVELOP, SOME AREAS COULD STILL
BE CLOSE TO THE 103 MARK FOR HIGH TEMPERATURES OR HAVE HEAT INDEX
VALUES APPROACH 108 DEGREES DUE TO INCREASED HUMIDITY, SO WE WILL
CONTINUE TO MONITOR.
LONG TERM
(THURSDAY NIGHT THROUGH TUESDAY)
ISSUED AT 1217 AM CDT WED AUG 26 2026
LOW TO MEDIUM RAIN CHANCES CONTINUE THURSDAY NIGHT INTO FRIDAY
WITH A BOUNDARY IN THE AREA. THERE MAY BE LESSER COVERAGE IN ANY
SHOWERS OR THUNDERSTORMS FRIDAY DUE TO THE SLIGHT EASTWARD
PROGRESSION OF THE MID-LEVEL RIDGE DURING THE DAY. HIGH
TEMPERATURES RELAX SLIGHTLY FRIDAY INTO THE WEEKEND THOUGH THE MID
90S TO AROUND 103 DEGREES WILL STILL BE COMMON EACH DAY DEPENDING
ON LOCATION. AN INCREASE IN MOISTURE WILL BUMP UP HEAT INDEX
VALUES, HOWEVER, SO THERE MAY BE A NEED FOR ADDITIONAL HEAT
PRODUCTS BUT CONFIDENCE IS LOW AT THIS TIME. WEAK RIDGING THIS
WEEKEND IS INTERRUPTED BY A DISTURBANCE MOVING TOWARDS THE GULF
COAST EARLY NEXT WEEK. THIS COULD BRING BACK SOME LOW RAIN CHANCES
TO THE AREA AND KEEP HIGHS BELOW HEAT ADVISORY LEVELS.
AVIATION
(06Z TAFS)
ISSUED AT 1217 AM CDT WED AUG 26 2026
VFR FLIGHT CONDITIONS GENERALLY PREVAIL. FEW TO SCT LOW CLOUDS
COULD DEVELOP NEAR AND AFTER SUNRISE NEAR AND TO THE EAST OF THE
I-35 SITES (KAUS, KSAT, AND KSSF). CANNOT RULE OUT A BRIEF PERIOD
OF MVFR BUT WILL ASSESS AS WE GET CLOSER TO SUNRISE AND SEE THE
LOCATION OF WHERE LOW CLOUDS ARE DEVELOPING. OTHERWISE, EXPECT
MOSTLY CLEAR SKIES WITH FEW MID TO HIGH LEVEL CLOUDS PASSING
THROUGH THE REGION. THERE MAY BE A SLIGHTLY MORE HIGH CLOUDS INTO
THURSDAY MORNING FROM THE NORTH. WE'LL AGAIN ALSO MONITOR FOR ANY
RETURNING LOW CLOUDS TOWARD SUNRISE THURSDAY MORNING AS WELL.
WINDS WILL LOOK TO MAINTAIN AT AROUND 10 KTS OR LESS FROM THE
SOUTH-SOUTHWEST TO EAST-SOUTHEAST. THE LATEST GUIDANCE IS NOT AS
GUSTY THIS EVENING AFTER SUNSET, REGARDING THE SEA BREEZE.
PRELIMINARY POINT TEMPS/POPS
AUSTIN CAMP MABRY 103 80 102 77 / 0 10 30 30
AUSTIN BERGSTROM INTL AIRPORT 103 80 102 77 / 0 10 40 40
NEW BRAUNFELS MUNI AIRPORT 103 77 101 75 / 0 0 40 40
BURNET MUNI AIRPORT 102 77 100 75 / 10 10 40 30
DEL RIO INTL AIRPORT 104 79 102 77 / 0 0 10 20
GEORGETOWN MUNI AIRPORT 103 79 101 77 / 10 10 30 30
HONDO MUNI AIRPORT 102 76 100 75 / 0 0 40 40
SAN MARCOS MUNI AIRPORT 103 78 102 76 / 0 10 40 40
LA GRANGE - FAYETTE REGIONAL 103 79 102 77 / 0 10 40 40
SAN ANTONIO INTL AIRPORT 103 79 101 78 / 0 0 30 40
STINSON MUNI AIRPORT 103 79 102 78 / 0 0 30 40
EWX WATCHES/WARNINGS/ADVISORIES
HEAT ADVISORY UNTIL 7 PM CDT THIS EVENING FOR TXZ171>173-191>194-
205>209-220>225.
SHORT TERM...27
LONG TERM....27
AVIATION...62
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