Choose an option for data retrival from above the map.
Click on the map to add marker for gridded data or simply click on predefined region.
Choose a tool on the right side of the page. Click on the plus sign to open a panel and click on the minus sign to close a panel.
Select options and press the Submit! button to request data.
Navigate through the along the top edge above the generated data/graphics. Click to navigate between tabs clicking on the Map tab will take you back to the map. Note hitting the back button of the browser or refreshing the page will remove all tabs and data/graphics.
Choose an option for data retrival from above the map.
Standardized Precipitation Index is a drought measurement where negative values represent drought and positive values represent wet conditions.
Palmer Drought Severity Index is a measure of dryness where negative values represent drought and positive values reflect excess rain.
Palmer Z-Index is a measure of monthly moisture conditions where negative values represent drought conditions and positive values represent wetness.
Self Calibrated Palmer Drought Serverity Index is created by replacing constant empirical values- mainly extreme events- with dynamically calculated values that are more spatially explicit.