737
FXUS64 KEWX 170019 AAA
AFDEWX
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
719 PM CDT SUN AUG 16 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 707 PM CDT SUN AUG 16 2026
- AUGUST HEAT AND A MAINLY RAIN FREE WEATHER REGIME CONTINUES THIS
WEEK. PRACTICE HEAT SAFETY AND STAY COOL AND HYDRATED.
SHORT TERM
(TONIGHT THROUGH MONDAY NIGHT)
ISSUED AT 1224 PM CDT SUN AUG 16 2026
THIS MORNING DID SEE A CORRIDOR OF FOG SETUP FROM THE EASTERN SIDE
OF THE SAN MARCOS/NEW BRAUNFELS AREA INTO PORTIONS OF THE COASTAL
PLAINS. THIS WAS DUE TO LIGHTER, CALM WINDS AND NEAR THE GROUND
SATURATION AS THE MORNING LOW TEMPERATURES DIPPED CLOSE TO THE DEW
POINTS, WHICH WERE NOTABLY LOWER COMPARED TO THE PREVIOUS FEW
MORNINGS. A REGION OF DRIER AIR, PRIMARILY FOCUSED NEAR AND TO THE
EAST OF THE I-10/I-37 CORRIDOR IS RESPONSIBLE FOR THESE LOWER DEW
POINTS. DESPITE A LIGHTER SOUTHERLY FLOW COMPARED TO THE PREVIOUS
FEW AFTERNOONS, EXPECT THROUGH THE DIURNAL HEATING PROCESS FOR THE
DEW POINTS ACROSS THIS SAME REGION TO MIX OUT TO THE MID TO UPPER
50S AND LOW 60S FROM THIS AFTERNOON INTO THE EARLY EVENING. THIS
YIELDS TO MOSTLY SUNNY CONDITIONS AND FOR AFTERNOON HIGHS TO CLIMB
INTO THE 100 TO 103 DEGREE RANGE OUTSIDE OF THE NATURALLY COOLER
LOCATIONS WITHIN THE HILL COUNTRY. HEAT INDICES, HOWEVER, WILL
REMAIN CLOSER TO THE AMBIENT TEMPERATURE. FARTHER WEST TOWARDS THE
RIO GRANDE, WHERE SLIGHTLY HIGHER DEW POINTS SHOULD PERSIST WITH
CLOSER PROXIMITY TO AN EXITING UPPER LOW, TEMPERATURES MAY BE A
LITTLE HARDER TO EFFICIENTLY WARM ACROSS THIS REGION AS RESULT.
THE DRIER AIR FOCUSED ACROSS OUR EASTERN AREAS TODAY SHOULD EXPAND
INTO THE WEST FROM THE OVERNIGHT INTO MONDAY. MORNING LOWS IN THE
LOW TO MID 70S WILL BE COMMON ACROSS THE REGION, BUT DO EXPECT FOR
ISOLATED LOCATIONS ACROSS THE HILL COUNTRY AND EDWARDS PLATEAU TO
BEGIN THE DAY IN THE 60S. WHILE LOW CLOUDS STILL MAY DEVELOP,
ESPECIALLY NEAR OR WEST OF SAN ANTONIO, TOWARDS SUNRISE, IT SHOULD
BE LESS WIDESPREAD IN GENERALLY ACROSS THE REGION AS THE PAST FEW
OVERNIGHTS. HOWEVER, GIVEN THE LIGHTER WINDS, WE STILL MAY SEE A
LITTLE BIT OF PATCHY FOG FOR THE COASTAL PLAINS BUT THE SIGNAL FOR
THIS IS WEAKER THAN WHAT HAD OCCURRED THIS MORNING. MONDAY TRENDS
WITH MOSTLY TO COMPLETELY SUNNY SKIES AND TEMPERATURES THAT WILL
AGAIN EFFICIENTLY WARM INTO THE 100 TO 103 DEGREE RANGE FOR MANY,
EXCEPT FOR THOSE NATURALLY COOLER LOCATIONS WITH THE TERRAIN.
LONG TERM
(TUESDAY THROUGH NEXT SUNDAY)
ISSUED AT 1224 PM CDT SUN AUG 16 2026
A PERSISTENT WEATHER PATTERN REMAINS THROUGH THE UPCOMING WEEK AS
THE REGION REMAINS UNDER THE INFLUENCE OF SUB-TROPICAL RIDGING. THE
RIDGING DOES REPOSITION A BIT TOWARDS LATE WEEK INTO THE WEEKEND,
WITH THE CENTER AXIS BECOMING ESTABLISHED ACROSS THE FOUR CORNERS
REGION. NONETHELESS, THE HOT AND PRIMARILY RAIN FREE FORECAST WILL
CONTINUE ACROSS SOUTH-CENTRAL TEXAS WITH THE DAYTIME HIGHS STILL
RUNNING A BIT ABOVE NORMAL. MIDWEEK FEATURES THE DRIEST AIR BEFORE
HUMIDITY LEVELS SLOWLY CREEP BACK UPWARDS WITH TIME FROM LATE WEEK
INTO THE WEEKEND. THIS WOULD ALLOW FOR A GRADUAL INCREASE IN THE
POTENTIAL FOR THE RETURNING OF MORE MORNING LOW CLOUDS BUT ALSO
PERHAPS A STRAY SHOWER IN ASSOCIATION WITH THE SEABREEZE.
AVIATION
(00Z TAFS)
ISSUED AT 707 PM CDT SUN AUG 16 2026
VFR CONTINUES THIS EVENING ALONG WITH SOUTH TO SOUTHEAST WINDS
AROUND 10KT, WITH SOME EVENING GUSTS UP TO 20KT. LOW CLOUDS WILL
DEVELOP AFTER MIDNIGHT AND WE WILL KEEP PREVAILING MVFR CIGS IN
THE FORECAST FOR SAT AND SSF. WE HAVE ALSO OPTED TO ADD A BRIEF
TEMPO GROUP FOR MVFR CIGS AT AUS BETWEEN 11-14Z. LOW CLOUDS WILL
BE QUICK TO DISSIPATE BY MID-MORNING AS SHALLOW MOISTURE MIXES
OUT LEAVING VFR FOR THE REMAINDER OF THE MORNING AND AFTERNOON.
PRELIMINARY POINT TEMPS/POPS
AUSTIN CAMP MABRY 75 102 77 102 / 0 0 0 0
AUSTIN BERGSTROM INTL AIRPORT 72 102 75 101 / 0 0 0 0
NEW BRAUNFELS MUNI AIRPORT 73 101 75 101 / 0 0 0 0
BURNET MUNI AIRPORT 73 101 74 100 / 0 0 0 0
DEL RIO INTL AIRPORT 77 101 78 100 / 0 0 0 0
GEORGETOWN MUNI AIRPORT 74 101 76 100 / 0 0 0 0
HONDO MUNI AIRPORT 73 100 74 100 / 0 0 0 0
SAN MARCOS MUNI AIRPORT 72 101 74 100 / 0 0 0 0
LA GRANGE - FAYETTE REGIONAL 73 101 76 100 / 0 0 0 0
SAN ANTONIO INTL AIRPORT 75 100 77 100 / 0 0 0 0
STINSON MUNI AIRPORT 75 102 76 101 / 0 0 0 0
EWX WATCHES/WARNINGS/ADVISORIES
NONE.
SHORT TERM...17
LONG TERM....17
AVIATION...PLATT
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