Monterey County Farm Bureau

Drought Monitor Map

A vigorous upper-level trough crossed southern California and the desert Southwest from December 25 to 27. Widespread moderate to heavy rain and high-elevation snow (0.5 to 2 inches, liquid equivalent) accompanied this upper-level trough. Snowfall amounts exceeded two feet in the mountains of southern California, while 4 to 12 inches was recorded in the higher elevations of Arizona. This recent precipitation along with support from longer-term SPI values resulted in a 1-category improvement to Dx levels in parts of Arizona and southwest Utah. 180-day precipitation deficits remain the largest (more than 6 inches) across southwest Colorado.

Drier weather returned to the Pacific Northwest during the final week of December. Following the period of heavy precipitation during mid to late December, no changes were made to the ongoing abnormal dryness (D0) and short-term moderate drought (D1) areas. Water year to date (since October 1) precipitation deficits of more than 12 inches, 28-day stream flows in the lowest 10th percentile, and basin average snow water content less than 50 percent support the short-term moderate drought (D1) across parts of Oregon and Washington.

As a comparison, below is the Drought Monitor Map from the high-point of the four-year drought:

Updated 1/03/2020