National Geographic : 1956 Sep
© National Geographic Society 323 Scientists Scan Idaho's Sunset Sky. Project Skyfire Probes the Clouds for Secrets Lightning ignites some 6,000 fires annually in western forests. Operation Skyfire, sponsored by a meteorologi cal research foundation, the Forest Service, the U. S. Weather Bureau, and others, seeks to determine whether cloud seeding can eliminate lightning. These meteorologists gather data on alto-cumulus clouds over Priest River Experimental Forest. Theodolite (left) measures direction and velocity of cloud movement. Time-lapse camera (on tripod) makes color movies of cloud development. Antenna detects atmospheric electricity.