Severe thunderstorms developed across parts of Montana on 16 June 2007, producing heavy rainfall (2-6 inches), large hail (up to 3 inches in diameter), damaging winds (gusting to 89 mph), and isolated tornadoes (SPC storm reports). GOES-11 10.7µm InfraRed (IR) imagery (above; Java animation) indicated cloud top brightness temperature values were as cold as -68º... Read More