Operational Periods: Aircraft Seeding Operations: November 1st to March 31st Ground Seeding Operations: November 1st to April 30th *Cloud seeding does not occur outside of these operational periods in Idaho Hot Topics NEW: EPA’s Information on Contrails Cloud Seeding Committee Meeting No. 1-25  Recording Silver Iodide (AgI) Research Monthly and Annual Operational Reports Current Project … Continue reading Cloud Seeding Program