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2025 Hazard Mitigation Plan <br />Kittitas County, Washington <br /> <br /> <br />Chapter 4: Hazard Identification and Risk Assessment 158 <br />Figure 4-21. SPC Severe Thunderstorm Outlook Categories <br /> <br /> <br />Hail can vary in shapes and sizes, and only the very large hailstones pose a serious risk to life safety. <br />NWS reports hail size by comparing the hailstone with traditional object to size conversion for assessment <br />and translation of severe hail reports. Table 4-97 lists the traditional conversion of hail size <br />descriptions.200F <br />200 <br />Table 4-97. Converting Traditional Hail Size Descriptions <br />Hail Size <br />(inches) Object Analog Reported <br />0.25 Pea <br />0.50 Mothball <br />0.75 Penny <br />0.88 Nickel <br />1.00 Quarter <br />1.50 Walnut, ping pong <br />1.75 Golf ball <br />2.50 Tennis ball <br />2.75 Baseball <br />3.00 Teacup <br />4.00 Softball <br /> <br />200 NOAA, National Severe Storms Laboratory. (n.d.). Severe Weather 101: Hail Basics. Retrieved from <br />https://www.nssl.noaa.gov/education/svrwx101/hail/.