Drought levels across US counties
Drought is a complicated phenomenon that is challenging to monitor and determine. Hurricanes, for instance, have a distinct beginning and end and can easily be observed as they grow and move. Drought, on the other hand, is the lack of water. It is a spreading phenomenon that slowly creeps up and affects many areas of the economy and works on various time scales. As a result, the climatological society has defined 4 types of drought:
- meteorological drought (dry weather patterns dominate an area)
- hydrological drought (low water supply becomes visible)
- agricultural drought
- socioeconomic drought.
The U.S. Drought Monitor explains drought combined across all time scales and differentiates among agricultural and hydrological impacts.