This tool is an interactive map of the Chesapeake Bay watershed that provides gridded estimates of how projections of future extreme precipitation—the number of days each year with precipitation above a 1", 2" or 3" threshold—during 30-year periods (2006-2035, 2036-2065, 2066-2095) and under two future emissions scenarios, compare to a historic 30-year average (1976-2005).
Changes in Extreme Precipitation from 1976 to Present
This tool is excerpted from Chesapeake Bay Watershed Climate Impacts Summary and Outlook for 2018.
- The eastern half of the Chesapeake Bay Watershed has experienced increases in extreme precipitation from 2006-2017 compared to historical averages.
- We see greater changes in the number of extreme precipitation events when looking at larger events.
- Much of the eastern portion of the watershed has seen double the number of days with extreme precipitation over 3 inches. These are the largest daily events in our analysis.
- Decreases in extreme precipitation events over the western portion of the watershed could suggest drying or at least decreases in the magnitude and intensity of precipitation events.
View all the climate data tools