19 Mar 2021

Drought Intensity, U.S. Drought Monitor

This layer displays areas that experienced dry or drought conditions in the last seven days. Data are retrieved as shapefiles from the U.S. Drought Monitor and are updated on a weekly basis. The affected areas are represented by polygons, which are classified according to drought intensity. Using quantitative and objective indicators, as well as local condition and impact reports, the U.S. Drought Monitor defines each drought intensity level as follows:

D0 – Abnormally Dry
D1 – Moderate Drought
D2 – Severe Drought
D3 – Extreme Drought
D4 – Exceptional Drought.

For more information about the data, please see the U.S. Drought Monitor Data Classification web page.

12 Mar 2021

PRISM 30-Year Average Precipitation, 1981 – 2010

This layer depicts average annual precipitation amounts based on data from 1981 to 2010. Data was obtained from the PRISM Climate Group at Oregon State University. PRISM models climate information using a process which incorporates a digital elevation model. Monthly average data is also available.

12 Mar 2021

PRISM 30-Year Average Temperature, 1981 – 2010

This layer depicts average annual temperature based on data from 1981 to 2010. Data was obtained from the PRISM Climate Group at Oregon State University. PRISM models climate information using a process which incorporates a digital elevation model. Monthly average data is also available.

12 Mar 2021

PRISM 30-Year Average Maximum Temperature, 1981 – 2010

This layer depicts average annual maximum (high) temperature based on data from 1981 to 2010. Data was obtained from the PRISM Climate Group at Oregon State University. PRISM models climate information using a process which incorporates a digital elevation model. Monthly average data is also available.

12 Mar 2021

PRISM 30-Year Average Minimum Temperature, 1981 – 2010

This layer depicts average annual minimum(low) temperature based on data from 1981 to 2010. Data was obtained from the PRISM Climate Group at Oregon State University. PRISM models climate information using a process which incorporates a digital elevation model. Monthly average data is also available.

12 Mar 2021

EPA Climate Change Indicators – Change in Extreme Temperatures

This indicator displays changes in the number of days with unusually (>95th percentile) cold temperatures in the contiguous 48 United States. Indicator data are acquired from the EPA’s Climate Change Indicators in the United States, Fourth Edition, published in 2016.

12 Mar 2021

EPA Climate Change Indicators – Change in River Flooding

This indicator examines changes in the size and frequency of inland river flood events in the United States. Indicator data are acquired from the EPA’s Climate Change Indicators in the United States, Fourth Edition, published in 2016.

12 Mar 2021

EPA Climate Change Indicators – Change in Snowfall

This indicator examines changes in total snowfall in the contiguous 48 United States. Indicator data are acquired from the EPA’s Climate Change Indicators in the United States, Fourth Edition, published in 2016.