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<br />Ramsey County | Multi-Jurisdiction Hazard Mitigation Plan 75 <br />Frequent CG lightning at the rate of 4 to 11 flashes per minute (about 20 to 55 flashes <br />per 5 minutes) associated with a given lightning storm. <br />Excessive CG lightning rate of 12 flashes or more per minute (about 60 flashes or more <br />per 5 minutes) and is nearly continuous associated with a given lightning <br />storm. <br />Source: www.weather.gov <br />Lightning risk is also defined as low, moderate, or high as shown in Table 19. <br />Table 19. Lightning Risk <br />Level Definition <br />Low Risk Atmospheric conditions do not support frequent cloud-to-ground lightning <br />strikes. <br />Moderate Risk Thunderstorms are forecast to be scattered in coverage (30-50% chance). <br />Atmospheric conditions support frequent cloud-to-ground lightning strikes. <br />High Risk Thunderstorms are forecast to be numerous or widespread in coverage (60- <br />100% chance). Atmospheric conditions support continuous and intense <br />cloud-to-ground lightning strikes. <br />Source: www.weather.gov <br />3.11.4 HISTORY <br />Ramsey County has a significant history of damaging windstorms and tornadoes. The National Centers <br />for Environmental Information (NCEI) Storm Events Database was consulted for incident records. <br />According to NCEI records, there have been 243 significant summer weather incidents reported <br />between 1950 and July 2024. This dataset recorded five deaths and two injuries since 1950. Notable <br />summer weather hazard incidents since 1950 are displayed in Table 20. <br />Table 20. Notable Summer Weather Hazard Incidents in Ramsey County, MN <br />Date Type Deaths/ <br />Injuries <br />Property <br />Damage <br />Description <br />August 9, <br />1998 <br />Lightning 1/0 None <br />reported <br />One man died because of a lightning strike <br />while under a tree. <br />May 1, 2001 Hail 0/0 $2M Numerous vehicles and buildings were <br />damaged. <br />June 7, 2005 Lightning 0/0 None <br />reported <br />Lightning struck a home on Timberline Trail. <br />The northwest corner of the home caught fire <br />and sheetrock fell on a person lying in bed. <br />August 8, <br />2005 <br />Lightning <br /> <br />0/0 None <br />reported <br />Lightning struck a home and a nearby tree on <br />Whitaker Street. The bolt that struck the <br />home damaged the electrical equipment <br />inside. The bolt that struck the tree caused <br />the tree to split in two, and one of the pieces <br />fell through a window.