What's Happening?
Matt Carnicle, a volunteer for the NASA-sponsored Community Collaborative Rain, Hail, and Snow Network (CoCoRaHS), recorded a historic 29.06 inches of rainfall in Louisiana on June 18, 2026. This measurement shattered the previous state record of 22.00
inches set in 1962. CoCoRaHS is a network of volunteer weather observers who measure and map precipitation. Carnicle's measurement was validated by Louisiana State Climatologist Jay Grymes and National Weather Service representatives. The event is considered extremely rare, expected to occur less than once in a thousand years. A NOAA committee will verify and document the new record.
Why It's Important?
This record-breaking rainfall event highlights the importance of volunteer-based weather observation networks like CoCoRaHS in providing critical data for weather forecasting and climate research. Such data can improve the accuracy of weather models and inform public safety measures, such as flash flood warnings. The event underscores the potential for extreme weather patterns, which can have significant implications for infrastructure, agriculture, and emergency preparedness in the region. The involvement of citizen scientists in data collection also emphasizes the role of community engagement in scientific research.
What's Next?
The NOAA committee will convene to verify and document the new rainfall record. This process will ensure the accuracy and reliability of the data, contributing to the historical climate record. The findings may prompt further research into the causes and frequency of such extreme weather events, potentially influencing future climate models and policy decisions. Additionally, the event may encourage more individuals to participate in volunteer weather observation programs, enhancing data collection efforts across the country.
