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The Pacific Islands CASC-supported Hawaiʻi Climate Data Portal makes data from  a network of 100 new weather stations across the Hawaiian Islands available to improve forecasts and early warning systems for floods and wildfires.

Hawaiʻi’s unique landscapes and climate create drastic differences in temperature, rainfall, wind, and other environmental conditions across small land areas. This variation makes monitoring weather and climate patterns difficult.  

 

To fill in data gaps in more remote parts of the island archipelago, researchers, including the Pacific Islands CASC University Program Director Dr. Ryan Longman, are working to install 100 new weather monitoring stations across the islands. Called the “Hawaiʻi Mesonet,” the network is designed to improve weather forecasting, enhance early warning systems for floods and wildfires, and strengthen climate monitoring. Each station in the network uses sensors to constantly scan and measure rainfall, air temperature, wind speed, solar radiation, and soil conditions, and transmitting the data in 15 minute increments that are made available via Hawaiʻi Climate Data Portal. The 61st station, installed in December 2024, is already providing real-time data, while the remaining 39 stations are planned to be deployed by 2026. The Hawaiʻi Mesonet is a collaboration with the University of Hawaiʻi, the Hawaii Department of Land and Natural Resources (DLNR), and the National Science Foundation (NSF). The Pacific Islands CASC and other organizations are contributing efforts that utilize these data and make the more accessible to range of stakeholders across the islands. 


Improving the state’s ability to monitor weather and climate, real-time data and high-resolution climate maps can be used by decision-makers to plan for emergencies, protect natural resources, and to support agriculture, water management, and ecosystems.  

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