September 5, 2023

Climate Events Analysis

Using the Climate Shift Index maps, a team of climate scientists, data analysts, and weather communications experts at Climate Central regularly identify notable weather events around the world that were made more likely by human-caused climate change. They analyze temperatures, temperature anomalies, and Climate Shift Index values to identify these events. They then release rapid alerts—often days before an event—and more detailed retrospective reports. 

Climate Central issues alerts when there’s a notable heat event around the world that was made more likely by human-caused climate change. 

The following examples were published in the summer of 2023.

Previous Climate Shift Index alerts

About the Climate Shift Index

Climate Central’s Climate Shift Index®, grounded in the latest peer-reviewed science, maps the influence of climate change on temperatures across the globe, every day. 

Climate Shift Index levels indicate how much human-caused climate change has altered the frequency of daily temperatures at a particular location. Level 1 indicates that climate change is detectable in that day’s temperature. Level 2 means that climate change made exceptionally warm temperatures in a given location at least twice as likely. Level 5 is the maximum and indicates temperatures at least 5 times more likely because of climate change.

For this analysis, temperatures come from NOAA’s Global Forecast System model.