This was the starting salvo for a quickly evolving blue hour thunderstorm at Horsetooth Reservoir, CO just after the sun set. The image is one minute of exposure time from two merged exposures and highlights some of the interesting cloud structure that was happening as the storm evolved quickly.

StormStormyWXWeatherLightnightTStormThunderstormThunderSkySkyscapeLandscapeStormscapeCOColoradoLarimerFort CollinsNatureAtomosphereLakeReservoirHorsetoothHorsetooth ReservoirMenefeeMichael MenefeeBlue HourNight