Likely state of Colorado record diameter hailstone

Likely state of Colorado record diameter hailstone

Members of the National Weather Service office in Goodland, CO and the Colorado State University Climate Center visited a family north of Bethune, Colorado on August 14 afternoon to measure a hailstone which was reported August 13 as being the largest in the state of Colorado history.

The Colorado State climatologist measured the hailstone using a set of calipers to get the exact measurement to the hundredth of an inch, NWS said. "The hailstone measured 122.6 mm (4.83 inches) in diameter at its widest point."

The homeowner said that the hailstone was brought indoors and secured in a freezer approximately 30 minutes after falling due to safety concerns from ongoing severe weather.

"Social media pictures were taken soon after the hailstone had fallen yesterday which were higher than the 4.83 inches (122.6 mm) measurement. The hailstone weighed 8.5 ounces (240.9 g) and its widest circumference was 12 inches (304.8 mm) and 7/8 inches (22.2 mm)," NWS said.

At this time there is no official measurement, and the current state record for the largest hailstone measured remains 114.3 mm (4.5 inches).

The Colorado State climatologist will be working with a committee of members from other agencies to take into account the social media pictures and their measurement along with the measurements taken today.

"When a final measurement is given we will share the information with our users," NWS meteorologists said.

Featured image credit: Becky Bolinger

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