017
FXUS64 KFWD 181840
AFDFWD
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FORT WORTH TX
140 PM CDT TUE AUG 18 2026
..NEW SHORT TERM, LONG TERM, AVIATION
KEY MESSAGES
- AN EXTREME HEAT WARNING IS IN EFFECT FOR NORTH TEXAS THROUGH
WEDNESDAY EVENING FOR TEMPERATURES UP TO 108 DEGREES, WITH A
HEAT ADVISORY IN EFFECT ELSEWHERE.
- TRIPLE-DIGIT HIGH TEMPERATURES WILL CONTINUE AREA-WIDE FOR THE
NEXT SEVERAL DAYS.
- LITTLE TO NO RAINFALL IS EXPECTED THE REST OF THE WEEK, AND LOW
HUMIDITY MAY CONTRIBUTE TO INCREASED WILDFIRE ACTIVITY.
SHORT TERM
(THIS EVENING THROUGH WEDNESDAY)
ISSUED AT 137 PM CDT TUE AUG 18 2026
STRONG UPPER LEVEL RIDGING WILL CONTINUE TO BRING VERY HOT WEATHER
TO THE REGION. AFTERNOON TEMPERATURES WILL CLIMB TO 100-108
DEGREES BOTH TODAY AND TOMORROW. THE EXTREME HEAT WARNING AND
HEAT ADVISORY HAVE BOTH BEEN EXTENDED THROUGH WEDNESDAY EVENING -
THE FORMER DRIVEN MORE BY HIGH TEMPERATURES OF 105 OR GREATER AND
THE LATTER DRIVEN BY A COMBINATION OF HEAT INDEX VALUES BETWEEN
105-109 DEGREES AND ACTUAL TEMPERATURES OF 102 OR GREATER.
FORTUNATELY, STRONG MIXING WILL KEEP HEAT INDEX VALUES WITHIN A
FEW DEGREES OF ACTUAL TEMPERATURES, ESPECIALLY ACROSS NORTH TEXAS.
HOWEVER, THIS WILL RESULT IN LOW RELATIVE HUMIDITY (NEAR 20-30%)
WHICH WILL CONTINUE TO FUEL CONCERNS OVER WILDFIRE STARTS.
WINDS WILL FORTUNATELY REMAIN RELATIVELY LIGHT (NEAR 10-15 MPH OR
LESS), WHICH WILL LIMIT FIRE SPREAD SHOULD ANY WILDFIRES BE
IGNITED. A VERY WEAK FRONTAL BOUNDARY WILL APPROACH FROM THE NORTH
WEDNESDAY AFTERNOON, BUT IS CURRENTLY EXPECTED TO STALL PRIOR TO
ENTERING THE FORECAST AREA. IF IT MAKES IT FURTHER SOUTH THAN
CURRENTLY ANTICIPATED, IT WILL GO RATHER UNNOTICED OUTSIDE OF
SHIFTING LIGHT WINDS OUT OF THE NORTH/NORTHEAST.
BARNES
LONG TERM
(WEDNESDAY NIGHT THROUGH NEXT MONDAY)
ISSUED AT 137 PM CDT TUE AUG 18 2026
THE WEATHER WILL FEEL RATHER "RINSE AND REPEAT" THROUGH THE
UPCOMING WEEKEND, WITH HIGH TEMPERATURES BETWEEN 100-108 DEGREES
EACH DAY AND LOWS IN THE MID 70S TO LOW 80S. STRONG MIXING WILL
KEEP HEAT INDEX VALUES CLOSE TO ACTUAL TEMPERATURES THROUGH
FRIDAY, BUT WE'LL STILL LIKELY NEED HEAT HEADLINES ON A DAILY
BASIS. A WEAK BOUNDARY MAY SLIDE INTO PORTIONS OF THE AREA OVER
THE WEEKEND, BUT WILL OFFER LITTLE TO NO RELIEF FROM THE HEAT.
WHILE THERE IS A LOW-END POTENTIAL FOR PRECIPITATION WITH THE
BOUNDARY, THE GENERAL CONSENSUS FAVORS THE CONTINUATION OF RAIN-
FREE CONDITIONS, WITH RAIN CHANCES ONLY AROUND 10% FOR PORTIONS OF
SOUTHEAST TEXAS.
BARNES
AVIATION
(18Z TAFS)
ISSUED AT 137 PM CDT TUE AUG 18 2026
VFR CONDITIONS ARE EXPECTED THROUGH THE PERIOD. SOUTHERLY WINDS
BETWEEN 7-10 KNOTS WILL PREVAIL. A SLIGHT INCREASE IN WIND SPEEDS
TO 10-15 KNOTS IS EXPECTED AROUND OR AFTER 05Z TONIGHT BUT SHOULD
ONLY LAST A FEW HOURS. A VERY WEAK COLD FRONT WILL APPROACH FROM
THE NORTH TOMORROW BUT IS EXPECTED TO STALL NEAR THE RED RIVER.
BARNES
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
PRELIMINARY POINT TEMPS/POPS
DALLAS-FT. WORTH 105 82 105 82 / 0 0 0 0
WACO 102 79 102 78 / 0 0 0 0
PARIS 104 80 104 80 / 0 0 0 0
DENTON 105 80 105 80 / 0 0 0 0
MCKINNEY 104 80 104 80 / 0 0 0 0
DALLAS 106 82 106 82 / 0 0 0 0
TERRELL 104 79 104 79 / 0 0 0 0
CORSICANA 103 79 102 78 / 0 0 0 0
TEMPLE 102 77 102 76 / 0 0 0 0
MINERAL WELLS 106 77 106 77 / 0 0 0 0
FWD WATCHES/WARNINGS/ADVISORIES
EXTREME HEAT WARNING UNTIL 8 PM CDT WEDNESDAY FOR TXZ091>095-
100>107-115>123-129>134.
HEAT ADVISORY UNTIL 8 PM CDT WEDNESDAY FOR TXZ135-141>148-
156>162-174-175.
SHORT TERM...BARNES
LONG TERM....BARNES
AVIATION...BARNES
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