Grand Lake grapples with ‘graupel’ as storm dumps soft hail on town
July 28, 2009
Catching shorts- and T-shirts-wearing tourists off guard, a shower of graupel, or marble-sized lumps of snow defined as soft hail, preceded rain showers around 2 p.m. in Grand Lake on Monday.
Cold temperatures, plenty of moisture and an “unstable atmosphere” caused snowflakes to glom together for the odd July weather, according to David Barjenbruch, meteorologist at the National Weather Service in Boulder.
Scattered showers and thunderstorms are expected to continue through today in northeastern/northcentral Colorado, and the cooler weather pattern could persist through the middle of next week, according to forecasters.
Beyond that, “There is still plenty of summer left for some heat,” Barjenbruch said.