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2024 Hennepin County All -Jurisdiction Hazard Mitigation Plan <br />Volume 2 — Hazard Inventory <br />The snow began around noon in the Twin <br />Cities and intensified throughout the day. <br />Five to 10 inches had already fallen by the <br />end of the day, and intense snowfall <br />continued throughout the overnight period. <br />By daybreak on November I", most of the <br />Twin Cities area already had well over a foot <br />of snow on the ground, with heavy snow still <br />falling. Many areas experienced a decrease in <br />snowfall intensity beginning in the late <br />morning, but snow nevertheless continued to <br />accumulate at a rate of an inch every 2-3 <br />hours throughout the afternoon and into the <br />evening. <br />Winds had picked up during the morning also, <br />and increased throughout the day, with <br />sustained speeds between 20 and 30 mph <br />with many gusts above 40 mph in the Twin <br />Cities. By mid -evening, another band of <br />heavy snow spread across the area, as winds <br />reached peak speeds of 25-40 mph with gusts <br />as high as 50 mph. Whiteout conditions <br />permeated the entirety of Hennepin County <br />during this period. <br />Snowfall totals from Halloween Blizzard. Courtesy of <br />Minnesota DNR State Climatology Office <br />Snow continued at a lighter pace into the 2nd and even the 3rd of November, but most of the <br />snow had fallen, with 25-30" totals falling on through the event. <br />The storm prompted school closings on both Friday November 1, and Monday November 41h in <br />some districts, as snow removal efforts were significantly behind schedule. The storm broke daily <br />and all-time snowfall records in the Twin Cities, and in its aftermath, the earliest subzero <br />temperatures on record were observed. <br />Dome Teflon Roof #3 Snowstorm and Blizzard, December 10-12, 2010. <br />A very potent winter storm developed over South Dakota and Nebraska on Friday, December <br />10th, then strengthened as it moved into Iowa through Saturday, December 11th. Moisture <br />surged into the Upper Mississippi River Valley ahead of the system on Friday, and precipitation <br />pushed into the region during the overnight hours. Both coverage and intensity increased during <br />the day on Saturday, and winds increased to 25-40 mph with higher gusts by afternoon. <br />177 <br />