![]() Not all data listed are considered official. We thank all volunteer weather observersįor their dedication. Observations are collected from a variety of sources with varyingĮquipment and exposures. La Crosse Regional Airport -49 F 0453 AM 01/30ġ E Black River Falls -48 F 0615 AM 01/30 Sparta/Fort McCoy Airport -50 F 0515 AM 01/30 ![]() Prairie Du Chien Airport -52 F 0315 AM 01/30 Viroqua Municipal Airport -55 F 0555 AM 01/30īlack River Falls Area Airpo -54 F 0935 PM 01/30ĭecorah Municipal Airport -53 F 0235 AM 01/30 Platteville Municipal Airpor -55 F 0715 AM 01/30 Oelwein Municipal Airport -58 F 0115 AM 01/30ġ ENE Jackson Junction -56 F 0230 AM 01/30Īustin Municipal Airport -55 F 0435 AM 01/30 Rochester International Airp -61 F 0354 AM 01/30 (occurred just before midnight Tue evening) (map temps are approx and not official readings - more specifics in tables below) Tragically, the cold also resulted in some loss of life. A state of emergency was declared for Wednesday, Jan.30th by the Wisconsin Governor resulting in many businesses being closed and suspension of postal services. Most schools closed through the week, first for the snow storm on Monday, then for the dangerous cold Tuesday through Thursday. Even colder readings were observed Thursday morning as clear skies and light winds allowed temperatures to fall to -40 or colder in some areas. Low temperatures bottomed out around 30 below for most Wednesday morning. Winds would diminish a bit Wednesday (30th), eventually becoming light that night. Northwest winds were on the increase by early morning on the 29th (Tuesday), blowing from 15 to 25 mph with gusts upwards of 40 through that day. ![]() What made this air more dangerous, to deadly, was the addition of strong, gusty winds. Temperatures would not climb above zero (0 deg F) until later Friday morning (Feb 1st) - one of the longest stretches of sub-zero temperatures on record. The record-breaking cold (coldest since 1996) moved in Monday afternoon (the 28th), with the temperatures dropping below zero by early evening. A dangerously cold arctic air mass settled across the Upper Mississippi River Valley for the end of January 2019, in the wake of a winter storm that brought several inches of snow a day earlier. ![]()
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