089
FXUS64 KEWX 200538
AFDEWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1238 AM CDT MON APR 20 2026
..NEW SHORT TERM, LONG TERM, AVIATION
KEY MESSAGES
- SOGGY MONDAY LIKELY FOR MOST AND FOR THE EASTERN TWO-THIRDS OF
THE AREA AGAIN ON TUESDAY.
- COOL WEATHER CONTINUES INTO TUESDAY WITH NEAR NORMAL
TEMPERATURES WEDNESDAY AND A WARMING TREND FOR LATE WEEK.
SHORT TERM
(TODAY THROUGH TUESDAY)
ISSUED AT 1229 AM CDT MON APR 20 2026
SHOWERS AND ISOLATED THUNDERSTORMS ARE CURRENTLY ONGOING ACROSS THE
AREA AT THIS HOUR WITH ACTIVITY EXPECTED TO CONTINUE AND INCREASE IN
COVERAGE AS THE MAIN DISTURBANCE RESPONSIBLE SLOWLY SHIFTS EASTWARD.
AT THE SAME TIME, THE UPPER-LEVEL RIDGING RESPONSIBLE FOR KEEPING
OUR NORTHERN AND EASTERN CWA AREAS DRY IS MOVING OFF TO THE EAST.
THIS WILL RESULT IN ADDITIONAL OVERRUNNING AND DEVELOPMENT OF
WIDESPREAD SHOWERS CONTINUING INTO DAYBREAK THIS MORNING. MOST
ACTIVITY IS EXPECTED TO REMAIN FAIRLY LIGHT. HOWEVER, THE ATMOSPHERE
IS VERY MOIST AND AS SUCH THE HREF PMM 24 HOUR QPF IS STILL SHOWING
A WIDE SWATH OF 1-2 INCHES FOR OUR AREA. SO ANY HEAVIER CELLS COULD
CERTAINLY TAKE ADVANTAGE OF THIS AS THERE REMAINS SOME INSTABILITY
ALOFT. TEMPERATURES LOOK TO STAY FAIRLY COOL FOR THIS TIME OF YEAR AS
MANY AREAS REMAIN LOCKED UNDER SHOWERS AND THICK CLOUD COVER WITH
AREAS REMAINING IN THE 50S AND PERHAPS MID 60S. ANOTHER ROUND OF
RAIN SHOWERS ALONG WITH ISOLATED THUNDERSTORMS LOOKS SET TO IMPACT
THE EASTERN TWO THIRDS OF OUR AREA HEADING INTO TUESDAY WITH RAIN
COOL AIR AND CAA ONCE AGAIN HELPING TO LIMIT AFTERNOON HIGH
TEMPERATURES WITH MOST BARELY HITTING 70 DEGREES. MAIN EXCEPTION
WOULD BE FOR THOSE UNDER A DEVELOPING SHORTWAVE RIDGE OUT WEST. AS A
RESULT, AREAS ACROSS THE RIO GRANDE PLAINS CAN EXPECT TO SEE HIGHS
IN THE MID TO UPPER 70S.
LONG TERM
(TUESDAY NIGHT THROUGH SUNDAY)
ISSUED AT 1229 AM CDT MON APR 20 2026
TUESDAY NIGHT WE SHOULD SEE RAIN CHANCES DECREASE SOMEWHAT BEFORE A
SECOND WAVE OF ENERGY MOVES BACK INTO THE AREA HELPING TO KICK OFF
MORE SHOWERS AND ISOLATED STORMS WITH OUR OVERRUNNING/ISENTROPIC
LIFT TYPE PATTERN CONTINUING INTO EARLY WEDNESDAY. WE FINALLY START
TO DRY OUT BY WEDNESDAY AFTERNOON WITH AREAS ALONG AND EAST OF I-35
CONTINUING TO SEE THE HIGHEST RAIN CHANCES. ALL ACTIVITY SHOULD
FINISH BY WEDNESDAY NIGHT AS MOST PRECIPITATION FINALLY PUSHES OFF
TO THE EAST AND OUT OF OUR AREA. THURSDAY AND FRIDAY SHOULD BE A
MUCH DRIER DAYS AS SOUTHERLY LOW LEVEL FLOW RETURNS AND WITH IT THE
POSSIBILITY FOR SOME ISOLATED STREAMER SHOWERS OVER THE COASTAL
PLAINS ON FRIDAY. TEMPS SHOULD WARM UP NICELY BACK INTO THE MID 80S
ON THURSDAY AND INTO THE UPPER 80S BY FRIDAY. OUR QUIETER AND DRIER
WEATHER IS SHORT LIVED AS A TROUGH OUT WEST BEGINS TO DEEPEN HELPING
TO BRING US BACK INTO SOUTHWEST FLOW. AS A RESULT, THUNDERSTORMS
APPEAR POSSIBLE FOR BOTH SATURDAY AND SUNDAY GIVEN THE SETUP IN
PLACE.
AVIATION
(06Z TAFS)
ISSUED AT 1229 AM CDT MON APR 20 2026
OVERRUNNING RAIN SHOWERS WILL MOISTEN UP THE LOWER LEVELS AND
LOWER CEILINGS IN THE SAN ANTONIO AREA WITHIN THE NEXT HOUR OR TWO.
WILL KEEP WITH PRIOR ISSUED TAF TIMING ON LOWERING INTO MVFR AS
THIS IS, ALONG WITH THE BLENDED GUIDANCE, A BIT MORE AGGRESSIVE
THAN THE MOS GUIDANCES. DEL RIO AND SAN ANTONIO AIRPORTS WILL DROP
INTO IFR BEFORE DAYBREAK, GIVEN THAT MODEL DATA SHOWS AREAS OF
PRECIPITATION MOST OF THE NIGHT. AT AUS, ONLY INTERMITTENT LIGHT
RAIN IS EXPECTED TO BEGIN AROUND MIDNIGHT, SO IT MAY TAKE LONGER
FOR THE CEILING TO LOWER. BY DAYBREAK, ALL AREAS HAVE A CHANCE TO
LOWER INTO IFR.
PRELIMINARY POINT TEMPS/POPS
AUSTIN CAMP MABRY 65 58 69 64 / 90 80 90 40
AUSTIN BERGSTROM INTL AIRPORT 65 57 69 63 / 90 80 90 40
NEW BRAUNFELS MUNI AIRPORT 65 57 70 63 / 90 80 90 40
BURNET MUNI AIRPORT 62 55 66 61 / 80 80 90 40
DEL RIO INTL AIRPORT 62 59 76 66 / 70 60 20 20
GEORGETOWN MUNI AIRPORT 63 56 66 61 / 70 80 90 40
HONDO MUNI AIRPORT 61 57 71 64 / 90 80 70 40
SAN MARCOS MUNI AIRPORT 65 57 69 63 / 90 80 90 40
LA GRANGE - FAYETTE REGIONAL 67 59 71 64 / 60 70 80 40
SAN ANTONIO INTL AIRPORT 63 59 70 65 / 90 80 80 40
STINSON MUNI AIRPORT 63 59 72 66 / 90 80 80 40
EWX WATCHES/WARNINGS/ADVISORIES
NONE.
SHORT TERM...CJM
LONG TERM....CJM
AVIATION...05
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