Area Forecast Discussion
Issued by NWS Tulsa, OK

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000
FXUS64 KTSA 251101
AFDTSA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
601 AM CDT SAT JUL 25 2015

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG.
VFR CONDITIONS ARE EXPECTED AT ALL SITES THROUGH THE TAF PERIOD.



&&

.PREV DISCUSSION... /ISSUED 345 AM CDT SAT JUL 25 2015/

DISCUSSION...
HOT AND HUMID WEATHER WILL CONTINUE THROUGH AT LEAST MIDWEEK AS
HIGH PRESSURE ALOFT REMAINS FIRMLY ENTRENCHED OVER THE AREA. RING
OF FIRE CONVECTION AROUND THE RIDGE MAY APPROACH THE NORTHEAST
CORNER OF OUR FORECAST AREA FROM TIME TO TIME BUT POPS LOOK TO
REMAIN BELOW MENTIONABLE LEVELS IN OUR AREA THROUGH AT LEAST
WEDNESDAY.

AFTERNOON HEAT INDEX VALUES WILL AGAIN EXCEED 110 TODAY ACROSS
MUCH OF NORTHEAST OKLAHOMA AND ALSO IN PARTS OF THE ARKANSAS RIVER
VALLEY IN WEST CENTRAL ARKANSAS SO HAVE ISSUED AN EXCESSIVE HEAT
WARNING IN THOSE AREAS. A HEAT ADVISORY WILL BE IN EFFECT FOR THE
REST OF THE FORECAST AREA AS PARTS OF WASHINGTON AND MADISON
COUNTIES IN ARKANSAS ARE ALSO FORECAST TO SEE HEAT INDEX VALUES
OVER 105 THIS AFTERNOON. HEAT HEADLINES WILL LIKELY BE NEEDED
AGAIN SUNDAY INTO MIDWEEK...BUT A SLOW DRYING OF THE BOUNDARY
LAYER SHOULD RESULT IN SLIGHTLY LOWER AFTERNOON HEAT INDICES AS WE
HEAD INTO EARLY NEXT WEEK.

A WEAK FRONTAL BOUNDARY IS EXPECTED TO PUSH INTO THE AREA
WEDNESDAY NIGHT AND THURSDAY. THE UPPER RIDGE WILL STILL BE
HOLDING STRONG AT THAT TIME SO CONVECTIVE COVERAGE MAY BE RATHER
LIMITED WITH THE FRONT. BY THE END OF THE WEEK...THE RIDGE FINALLY
RETROGRADES A BIT TO THE WEST AND THIS MAY TAKE JUST A LITTLE BIT
OF THE EDGE OFF THE HEAT AND HUMIDITY BY THAT TIME.

STAYED CLOSE TO GUIDANCE TEMPERATURES THE NEXT COUPLE DAYS.

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...HEAT ADVISORY FROM NOON TODAY TO 8 PM CDT THIS EVENING FOR
     OKZ049-053-063-068-069-073-075.

     EXCESSIVE HEAT WARNING FROM NOON TODAY TO 8 PM CDT THIS EVENING
     FOR OKZ054>062-064>067-070>072-074-076.

AR...HEAT ADVISORY FROM NOON TODAY TO 8 PM CDT THIS EVENING FOR
     ARZ001-002-010-011.

     EXCESSIVE HEAT WARNING FROM NOON TODAY TO 8 PM CDT THIS EVENING
     FOR ARZ019-020-029.

&&

$$

AVIATION...23



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