Weather Discussion 9: 5-27-2008
DISCUSSION...RAIN ASSOCIATED WITH A SHORTWAVE SYSTEM OVER ALABAMA IS BEGINNING TO FORM TO THE NORTHWEST OF AS IT STRETCHES FROM HUNTSVILLE, ALABAMA BACK TOWARDS JACKSON, TENNESSEE. RAINFALL WILL MAKE ITS WAY EAST AS THE DAY GOES ON.
SHORT TERM...FRONT ASSOCIATED WITH A LOW PRESSURE SYSTEM OVER THE GREAT LAKES WILL SLOWLY MAKE ITS WAY INTO THE FORECAST AREA OVER THE OVERNIGHT HOURS TONIGHT. A SHORTWAVE SYSTEM AHEAD OF IT ALONG WITH A SMALL, LOW LEVEL JET AND DAYTIME HEATING LEAVE CHANCES FOR STORMS FOR LATER TODAY. MOST OF THE RAIN WILL AFFECT NORTHERN SECTIONS OF THE TENNESSEE VALLEY AND CUMBERLAND PLATEAU AS THE FRONT ADVANCES. AS THE FRONT PASSES TO OUR EAST, CHANCES FOR THUNDERSTORMS WILL DROP AS CONVECTIVE SYSTEM LEAVES OUR AREA.
LONG TERM...EFFECTS FROM THE FRONT STILL LINGER INTO WEDNESDAY WITH A CHANCE OF RAIN FOR THE MORNING HOURS, BUT TAPERING OFF AS THE DAY GOES ALONG. AN UPPER LEVEL RIDGE SITUATED OVER THE PLAINS STATES WILL MOVE EASTWARD ON THURSDAY, BRINGING WITH IT CLEAR SKIES AND TEMPERATURES INTO THE MID AND UPPER 80S FOR LATE WEEK, AND IT LOOKS LIKE THOSE HOT TEMPERATURES WILL HANG AROUND FOR AT LEAST A WEEK, IF NOT THE REST OF THE SEASON. THE CLEAR SKIES CONTINUE FOR FRIDAY AS WELL, BUT A FRONTAL SYSTEM COULD GIVE US THE CHANCE FOR SOME SEVERE WEATHER AS WE GO INTO THE DAY ON SATURDAY.
3-DAY FORECAST FOR KNOXVILLE, TN
WEDNESDAY: SHOWERS AND STORMS IN THE MORNING, 60% CHANCE OF RAIN, HIGH 81, LOW 63
THURSDAY: UPPER LEVEL RIDGE MOVES IN LEAVING US WITH CLEAR SKIES, WARM, HIGH 83, LOW 60
FRIDAY: CLEAR AND HOT, HIGH 88, LOW 67
850 MB SURFACE MAP
500 MB SURFACE MAP
SURFACE ANALYSIS
Posted at 10:36AM May 27, 2008 by arbowlin in General | Comments[0]