Resolution 7478 hazard mitigation

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2024 Hennepin County All -Jurisdiction Hazard Mitigation Plan Volume 2 — Hazard Inventory 2006 • In the wake of a winter storm on February 17, 2006, strong high pressure moved in and created strong winds and dangerous wind chills. The coldest wind chill seen at the Twin Cities International Airport was -34°F. The coldest wind chill found statewide was -54°F at Thief River Falls. 2014 • Governor Mark Dayton cancelled K-12 public schools statewide on Monday January 6th, 2014, due to extreme wind chills that were forecasted well in advance. The coldest wind chill temperature in Minnesota was -63°F at Grand Marais Airport at 9:00 AM with a -31°F air temperature and a 21mph wind. The coldest wind chill temperature in the Twin Cities was -48°F at 5:00 AM with an air temperature of -22°F and a 15-mph wind. Many schools also cancelled classes the following day as well. The wind chill at 4am January 7th was - 28°F at the Twin Cities International Airport with an air temperature of -14°F and a wind of 6mph. Statewide the coldest wind chill was -50°F reported at Duluth at 4:00 AM with an air temperature of -23°F and a west wind of 16mph. • Schools were cancelled at many locations again on Thursday, January 23. The coldest wind chill in the Twin Cities on January 23 was at 2:00 AM with a wind chill of -37°F with an air temperature of -14°F and a NW wind of 15mph. The coldest statewide wind chill was - 51°F at Park Rapids at 6am with an air temperature of -33°F and as wind of 6mph. • Schools were cancelled for a fourth day across the Twin Cities on January 27 as well. Classes were also canceled for the day for the University of Minnesota. The coldest wind chill in the Twin Cities was -39°F at 4:00 AM (-13°F air temp and wind NW 20mph). The coldest wind chill statewide was -53°F degrees at the Grand Marais Airport at 8:00 AM (- 26°F air temp, wind NE 16mph). • Schools were cancelled once more across the Twin Cities on Tuesday January 28th. University of Minnesota classes were cancelled in the morning. The coldest wind chill in the Twin Cities was -29°F at gam with an air temperature of -12°F and a wind speed of 8mph. The coldest wind chill in the state was -52°F at Fosston at 7:00 AM with air temperature of -33°F degrees and a wind speed of 7mph from the south. 4.3.10.8. Future Trends Ble In Minnesota, there are climate change signals showing the loss of formerly normal cold temperatures. That is saying that the coldest day of the year has warmed by about 8°F since the early 201h century and the 15 coldest days have warmed by about 7° F over the same period. GRAPHIC 4.3.1011) shows this warming period of coldest temperatures from about 1970 forward. This means the coldest high temperatures have warmed dramatically since 1970 and are now warmer than at any other time on record. In addition, the high temperatures at or below zero have become much less common in recent years and may soon be the exception, rather than the rule. 164