This tool is excerpted from Chesapeake Bay Watershed Climate Impacts Summary and Outlook for 2018.
Move the slider to adjust the Daily Precipitation Threshold to show number of days with precipitation above a 1", 2" or 3" threshold.
Click or tap a grid cell to show trends in the number of annual extreme precipitation events. This data will change when a different Daily Precipitation Threshold is selected.
The ChesWx gridded climate datasets contain daily interpolations of precipitation and temperature observations for the Chesapeake Bay watershed, as well as the broader Mid-Atlantic and surrounding regions. Data are available from 1948 to 2017 at 4km spacial resolution. For this study, we utilized ChesWx daily precipitation data over the Chesapeake Bay watershed from 1976 to 2017. Access ChesWx data and learn more about the ChesWx methodology and input datasets.
We calculated the number of days above 1 inch, 2 inch and 3 inch daily precipitation thresholds ofr each year across the Chesapeake Bay watershed using the ChesWx precipitation data product. The annual counts above these thesholds were then averaged across two periods: 1976-2005 and 2006-2017. The ChesWx were masked to the boundaries of the Chesapeake Bay watershed, and the spacial resolution of each dataset was preserved.
