Arizona Daily Precipitation — CoCoRaHS
Observation date: October 18, 2026 (24-hour period ending ~7:00 AM local)
This map shows daily precipitation totals reported by CoCoRaHS volunteer observers across Arizona for the 24-hour period ending at approximately 7:00 AM local time on the observation date above. CoCoRaHS (the Community Collaborative Rain, Hail and Snow Network) is a network of trained volunteers who measure and report precipitation from their own backyards, providing a dense, ground-truth view of rainfall patterns that fills gaps between official weather stations.