Issued by NWS Indianapolis, IN
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000 FXUS63 KIND 241742 AFDIND AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE INDIANAPOLIS IN 140 PM EDT FRI OCT 24 2008 .DISCUSSION... FCST FOCUS ON TEMPS/PRECIP CHCS FIRST 24 HRS THEN TEMPS BEYOND SAT. AGAIN...NO SIG DISCREPANCIES BETWEEN GFS/NAM WITH REGARD TO MAIN FCST FEATURES THROUGH THE PERIOD. ONLY MINOR DIFFERENCES IN TEMPS SAT/SUN. UPPER SYSTEM IS SLOWLY MOVING NE TOWARD THE REGION. DRY SLOT IS APPROACHING BUT SHALLOW ISENTROPIC LIFT HAS LEAD TO MUCH OF THE REGION CLOUDING OVER IN LOW CLDS. TONIGHT...DYNAMIC LIFT AHEAD OF THE UPPER LOW WILL LEAD TO ANOTHER ROUND OF SCT SHOWERS ESPECIALLY ACROSS THE NORTHERN HALF OF THE CWA. GIVEN CONTINUED SW SFC FLOW AND EXPECTED CLDS WILL LEAN TOWARD THE WARMER MAV TEMPS OVERNIGHT. ANY LINGERING SHOWERS SHOULD EXIT THE CWA EARLY SAT. HOWEVER...CLDS WILL PERSIST INTO THE AFTERNOON WITH SOME LATE DAY SUN POSSIBLE. HIGHS WILL REMAIN COOL AND GUIDANCE IS IN GOOD AGREEMENT WITH TEMPS STAYING IN THE 50S. STRONG COLD FRONT IS STILL ON TRACK TO SWEEP THROUGH THE AREA SUNDAY. WINDY CONDS SHOULD ALLOW FOR MIXING DAYTIME TEMPS TO MILD READINGS HOWEVER TIMING AND EXTENT OF CAA REMAINS UNCERTAIN HOWEVER WE WILL CONTINUE TO LEAN TOWARD COOLER METMOS HIGHS WHICH AGREE WITH GFS/NAM BUFKIT SOUNDING SFC TEMPS. NO CHANGES TO NEXT WEEK/S FCST WITH HIGHS IN THE 40S MONDAY/TUES WITH SFC RIDGE AND UPPER RIDGE FCST TO MOVE EAST OF THE STATE BY MID WEEK WITH NEAR OR JUST ABOVE AVG TEMPS BY LATE WEEK. && .AVIATION... DISCUSSION FOR 241800Z TAFS. A VERY SLOW MOVING UPPER LEVEL LOW PRESSURE OVER THE MID MISSISSIPPI VALLEY WILL PLAGUE THE AVIATION FORECAST. WITH ITS SLOW MOVEMENT AND ALL THE MOISTURE IT CONTINUES TO BRING INTO THE AREA...CIGS WILL ONLY VERY SLOWLY IMPROVE. IFR WILL GIVE WAY TO MVFR LATER THIS AFTERNOON AFTER 22Z BUT THEN THE MVFR WILL REMAIN UNTIL LATE MORNING ON SATURDAY. A SECOND AREA OF LIGHT RAIN WILL CROSS THE AREA AFTER 06Z TONIGHT BUT SHOULD BE GONE BY 12Z. WINDS WILL INCREASE OUT OF THE SOUTHWEST BY 14Z SATURDAY AND WILL BECOME GUSTY. SUSTAINED WINDS ABOUT 15KTS WITH GUSTS IN THE 20-22KT RANGE ARE EXPECTED. VFR CIGS WILL RETURN AFTER 14-15Z. && .IND WATCHES/WARNINGS/ADVISORIES... NONE. && $$ AVIATION...JOHNSON
