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California Drought Early Warning System

Conditions for the week of February 14-20

Most of California remained dry this week. Above-normal temperatures over the last few months, combined with precipitation deficits over most of the Southwest, led to the continuation of drought in much of the Southwest region. Moderate drought expanded through parts of the Sierra Nevada, where very low snowfall, short- and seasonal-range precipitation deficits, and warm temperatures so far this winter continued. Some ski areas have even closed because of the lack of snowfall. Abnormally dry conditions expanded through the rest of the Central Valley in California, where precipitation deficits over the water year and stream flow continued to degrade.

Read more about the California DEWS

U.S. Drought Monitor - California DEWS

U.S. Drought Monitor - California DEWS
U.S. Drought Monitor - California DEWS
Drought Conditions (Percent Area)
WeekNoneD0-D4D1-D4D2-D4D3-D4D4
Current
2/20/2018
8.43%91.57%47.87%19.98%0.00%0.00%
Last Week
2/13/2018
18.29%81.71%45.71%19.98%0.00%0.00%
Three Months Ago
11/21/2017
73.98%26.02%8.24%0.00%0.00%0.00%
Start of Calendar Year
1/02/2018
55.70%44.30%12.69%0.00%0.00%0.00%
One Year Ago
2/21/2017
61.66%38.34%16.87%4.19%0.00%0.00%

Drought Intensities

  •       None: No Drought
  •       D0: Abnormally Dry
  •       D1: Moderate Drought
  •       D2: Severe Drought
  •       D3: Extreme Drought
  •       D4: Exceptional Drought
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Pie chart describing current drought for this location.