june2004hastings-mammatusSpectacular Mammatus Clouds over Hastings, Nebraska These photos were taken by Jorn Olsen, he lives on Heartwell Park in Hastings, Nebraska. e-mail - jolsen@dutton-lainson.com His website is: http://www.jornolsen.com which you may be interested in looking at. Three of these photos were featured on the front and back cover of the Journal of Meteorology and circulated in 26 countries.
