Heat Map: Serious Drought in California

Currently, United States is facing extreme weather, the polar vortex, and people may not notice the serious drought problem in California. Following is a heat map, released by the National Drought Mitigation Center, reminding us to face the serious drought problem in California.
california-drought-mapFrom the above map, we can see that the wetness percentile in California is below 2 that nearly 90 percent of the state is suffering from extreme drought.