By GLENN LOGANSOUTHWEST — Spring’s first heavy snowfall was a doozer and had the southwest suburbs tied up in knots last Wednesday and Thursday. Fortunately there were no fatalities or serious injuries.The predicted flurries start-ed falling in blizzardproportions about mid-day Wednesday. Snowflakesthat looked so large that one expected them to bouncetwice when they hit soon hadthe ground covered. Radio reports continued to deal with snow mixed with rain most of the afternoon and that may have been true inChicago.But in the southwest suburbs it was just plain snow — big flakes then small flakes, then bie ones and small ones,See SNOW, Page 19