OAK FOREST 1 NNW 0.5 IN 0700 AM 03/04 COCORAHS WHEN IT ENDED FRIDAY EVENING TO THE SATURDAY MORNING OBSERVATIONS.ĬHICAGO HEIGHTS 3.2 IN 0700 PM 03/03 PUBLIC NOT ALL DATA LISTED ARE CONSIDERED OFFICIAL.ĭO NOTE THERE WAS LIKELY SOME COMPACTING OF THE SNOWFALL FROM WE THANK ALL VOLUNTEER WEATHER OBSERVERSįOR THEIR DEDICATION. OBSERVATIONS ARE COLLECTED FROM A VARIETY OF SOURCES WITH VARYINGĮQUIPMENT AND EXPOSURES. When it became apparent that snowfall would not make it into some of that Advisory area, such as downtown Chicago and the western suburbs, the Advisory was cancelled for those locations on Friday morning.ġ114 AM CST SAT /1214 PM EST SAT MAR 4 2023/ This was upgraded to a Warning for northwest Indiana and the Kankakee River Valley region of northern Illinois on Thursday evening, with an Advisory issued to the immediate northwest. A Winter Storm Watch had been issued for northwest Indiana and a large part of northern Illinois Thursday morning, March 2.The sharp gradient in snowfall and impacts was expected, however, pinpointing where exactly this would occur was challenging for forecasters leading up to this event (see Forecast Thoughts tab). The event resulted in a sharp gradient of snowfall on its northern end, and the width of the snow corridor itself was only ~90 miles.I-57 in Kankakee County shortly after 3 PM CST on Ma(courtesy of IDOT)įowler, IN in Benton County near 5 PM CST on Ma(courtesy of INDOT) Resulting impacts were snow-covered roads and low visibility, with hazardous to at times dangerous travel south of I-80, including near and along I-57 and I-65.There were also strong winds ahead of and during the snow, especially south of the Kankakee River Valley, where gusts exceeded 45 mph.Total accumulations at most locations that saw snow ended up ranging from around 2 to a little over 5 inches. In the local area, heavy snowfall rates materialized south of I-80, with 1 to 2 inch per hour rates that were occasionally accompanied by lightning and thunder (rare thundersnow!).A low pressure system that reached a record strength in the lower Ohio Valley ( reference NWS Paducah, KY) brought widespread impacts to the southern, central, and eastern United States on the night of March 2 through the morning of March 4.

Indiana snowfall totals