476 FXUS64 KOHX 172117 AAA AFDBNA AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE NASHVILLE TN 400 PM CDT THU JUN 17 2004 .DISCUSSION...FIRST AREA OF SHOWERS AND THUNDERSTORMS, ASSOCIATED WITH AN UPPER LEVEL SHORTWAVE, HAS NOW EXITED THE PLATEAU. HOWEVER, A SECOND AREA OF SCATTERED SHOWERS AND STORMS, LOCATED IN CLOSE PROXIMITY TO THE 500MB VORT MAX, WAS JUST STARTING TO PUSH INTO OUR NORTHWESTERN COUNTIES. HAVE LEFT IN A 30 PERCENT CHANCE OF EVENING SHOWERS AND THUNDERSTORMS OVER THE WESTERN TWO-THIRDS OF OUR FORECAST AREA, BUT HAVE KEPT THE 30% POP RUNNING ALL NIGHT ALONG THE PLATEAU, WHERE THE SAGGING UPPER LEVEL SHORTWAVE COULD SET OFF A SHOWER OR STORM LATER IN THE NIGHT. STILL LOOKS LIKE ANOTHER DECENT SHORTWAVE WILL MOVE INTO OUR NECK OF THE WOODS LATE FRIDAY NIGHT AND SATURDAY AND BRING ALONG ANOTHER ROUND OF SCATTERED SHOWERS AND THUNDERSTORMS. THUS, HAVE LEFT THE 50% POP RUNNING FOR SATURDAY. SUNDAY LOOKS LIKE A DRY DAY. HOWEVER, BY THE EXTENDED PERIOD, MONDAY THROUGH THURSDAY, WE SHOULD GET BACK INTO SOUTHERLY FLOW, WHICH SHOULD GIVE US A RETURN TO A TYPICAL SUMMER-LIKE PATTERN, WITH A 30% CHANCE OF SHOWERS AND THUNDERSTORMS EACH PERIOD. && .BNA WATCHES/WARNINGS/ADVISORIES... NONE. && $$ 19