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<br />Ramsey County | Multi-Jurisdiction Hazard Mitigation Plan 57 <br />don't take precautions, you may become seriously ill or even <br />die. <br />Excessive Heat Outlooks—Be Aware! The outlooks are issued when the potential exists for an <br />excessive heat event in the next 3-7 days. An Outlook <br />provides information to those who need considerable lead <br />time to prepare for the event. <br />Source: www.weather.gov <br />3.10.3.2 Hail <br />Hail size typically refers to the diameter of the hailstones. Warnings and reports may report hail size <br />through comparisons with real-world objects that correspond to certain diameters. To be considered <br />severe, hail stones must be at least 1 inch in diameter. Hail naming convention, damage estimate, <br />description, and size are provided in Table 6. <br />Table 6. Hail Descriptions and Damage Estimates <br />Hail Name Damage Description Diameter <br />(in.) <br />Small Hail Unlikely Pea 0.25 <br />Marble or Mothball 0.50 <br />Penny or Dime 0.75 <br />Nickel 0.88 <br />Large Hail Minor damage Quarter 1.00 <br />Half Dollar 1.25 <br />Walnut or Ping Pong Ball 1.50 <br />Golf ball 1.75 <br />Very Large Hail Moderate damage Hen's Egg 2.00 <br />Tennis Ball 2.50 <br />Baseball 2.75 <br />Giant Hail Major damage Teacup 3.00 <br />Grapefruit 4.00 <br />Softball 4.50 <br />Source: www.weather.gov <br />3.10.3.3 Lightning <br />The threat of lightning is largely based on the likelihood that cloud-to-ground lightning (CG) from <br />thunderstorms will occur combined with the anticipated flash rate. With CG lightning, every strike is <br />potentially lethal and has the potential to contribute to other hazards such as wildfire. Flash rate is <br />defined in Table 7. <br /> <br /> <br />