Weather Discussion 5: 5-20-2008
DISCUSSION...LOW PRESSURE MAKES ITS WAY ACROSS NORTH CAROLINA TODAY WHILE THE TRAILING COLD FRONT WILL PASS TO THE SOUTH OF THE TENNESSEE VALLEY AS THE DAY CONTINUES. CHANCES FOR RAIN THIS MORNING HAVE DIMINISHED WHILE CHANCES FOR THE AFTERNOON HAVE INCREASED. WINDY CONDITIONS ARE EXPECTED AS WELL.
SHORT TERM...MOSTLY CLOUDY SKIES WITH A FEW BREAKS IN THE CLOUDS FOR THIS MORNING AS THE COLD FRONT SITS OVER THE REGION. WINDY CONDITIONS ARE EXPECTED TODAY DUE TO A LOW LEVEL JET MAKING ITS PRESENCE KNOWN OVER THE VALLEY. WARM AIR ADVECTION FROM THE WARM FRONT PASSAGE YESTERDAY HAS LEFT HIGHER LEVELS OF THE ATMOSPHERE WITH A LITTLE INSTABILITY WHICH COULD INCREASE THE CHANCE OF A FEW LATE DAY ISOLATED STORMS. TEMPERATURES WILL REMAIN RELATIVELY WARM FOR TUESDAY AS THEY ARE TRENDING HIGHER THROUGHOUT THE WEEK. CHANCE OF RAIN DECREASES THROUGH THE OVERNIGHT AS SKIES WILL CLEAR OUT FOR EARLY AM WEDNESDAY.
LONG TERM...A LOW PRESSURE SYSTEM STILL SITUATED OVER THE GREAT LAKES AND CANADA ALONG WITH NORTHWESTLY FLOW ALOFT WILL CONTINUE TO BRING MOISTURE DOWN TO OUR REGION FOR THE NEXT FEW DAYS. CHANCES REMAIN FAIRLY LOW FOR WEDNESDAY THOUGH. CHANCES ARE BACK ON THE RISE FOR THURSDAY AND FRIDAY AS THE TYPICAL SUMMERTIME STORM SET-UP IS IN PLACE. MOISTURE WITH DAYTIME HEATING AND SLIGHT INSTABILITY COULD GET THE STORMS GOING THURSDAY INTO FRIDAY. TEMPERATURES CONTINUE TO TREND HIGHER TOWARDS THE LOW TO MID 80'S AS THE WEEK ENDS.
3-DAY FORECAST FOR KNOXVILLE, TN
WEDNESDAY: PARTLY CLOUDY AND WARM, HIGH 77, LOW 57
THURSDAY: MOSTLY CLOUDY WITH A CHANCE OF A SCATTERED SHOWER OR STORM, 30% CHANCE OF RAIN, HIGH 76, LOW 57
FRIDAY: SLIGHT CHANCE OF AN ISOLATED THUNDERSTORM, OTHERWISE MOSTLY CLOUDY, 20% CHANCE OF RAIN, HIGH 80, LOW 59
850 MB SURFACE MAP
500 MB SURFACE MAP
SURFACE ANALYSIS
Posted at 09:58AM May 20, 2008 by arbowlin in General | Comments[0]