396 FXUS64 KTSA 211954 AFDTSA AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 254 PM CDT FRI JUN 21 2013 .DISCUSSION... ANOTHER HOT AND HUMID DAY FOR THIS FIRST DAY OF ASTRONOMICAL SUMMER. ISOLATED SHOWERS/STORMS WILL BE POSSIBLE ACROSS MAINLY NORTHWEST ARKANSAS...WITH THE VISIBLE SATELLITE SHOWING AN ENHANCED CU FIELD...AND THE LOCAL RADAR MOSAIC SHOWING A FEW SHOWERS ALREADY BEGINNING TO DEVELOP NEAR THAT AREA. A WEAKNESS IN THE UPPER RIDGE WILL PERSIST ACROSS NORTHWEST ARKANSAS AND FAR EASTERN OKLAHOMA THROUGH EARLY NEXT WEEK...ALLOWING ISOLATED DIURNAL THUNDERSTORMS TO BE POSSIBLE ACROSS THE HIGHER TERRAIN AREAS THROUGH MONDAY AFTERNOON/EVENING. AFTER THAT TIME...THE RIDGE SHOULD REASSERT ITSELF...MAKING DIURNAL STORM DEVELOPMENT LESS LIKELY...AND CERTAINLY BELOW MENTIONABLE LEVELS IN AN EXTENDED FORECAST. THE BUILDING RIDGE WILL LIKELY LEAD TO THE HOTTEST TEMPERATURES OF THE YEAR SO FAR...WITH AREAS APPROACHING THE UPPER 90S WEDNESDAY AND THURSDAY. WE MAY FLIRT WITH HEAT HEADLINE THRESHOLDS AS WELL. A COLD FRONT WILL APPROACH THE REGION LATE NEXT WEEK...WHICH COULD PROVIDE A SMALL MEASURE OF RELIEF TO PARTS OF OKLAHOMA AND ARKANSAS BY FRIDAY. && .PRELIMINARY POINT TEMPS/POPS... TUL 78 95 78 93 / 10 0 0 10 FSM 74 94 73 92 / 10 10 10 10 MLC 74 93 75 91 / 0 10 10 10 BVO 72 94 72 92 / 10 0 0 10 FYV 70 90 70 87 / 10 10 10 20 BYV 70 89 69 88 / 10 20 20 20 MKO 72 93 72 91 / 10 10 10 10 MIO 73 93 73 91 / 10 10 10 10 F10 74 93 74 91 / 0 10 10 10 HHW 73 94 74 92 / 0 10 10 10 && .TSA WATCHES/WARNINGS/ADVISORIES... OK...NONE. AR...NONE. && $$ SHORT TERM...30 LONG TERM....22