Map released: Thurs. February 29, 2024
Data valid: February 27, 2024 at 7 a.m. EST


  • None
  • D0 (Abnormally Dry)
  • D1 (Moderate Drought)
  • D2 (Severe Drought)
  • D3 (Extreme Drought)
  • D4 (Exceptional Drought)
  • No Data


United States and Puerto Rico Author(s):

Pacific Islands and Virgin Islands Author(s):

The Drought Monitor focuses on broad-scale conditions. Local conditions may vary. See accompanying text summary for forecast statements.


Statistics type ?
Week Date None D0-D4 D1-D4 D2-D4 D3-D4 D4 DSCI

Estimated Population in Drought Areas:

West Drought Summary

Two to locally 5 inches of precipitation fell in the Oregon and Washington Cascade and Coastal mountains this week, with half an inch to locally 2 inches in the northern and central Rockies and southern California, and 0.5 to 1.5 inches in the Sierra Nevada and parts of coastal California. Outside of these areas, precipitation was generally less than a fourth of an inch, with rainshadow areas and the Southwest (Four Corners States) mostly dry. The precipitation was above normal for the week in some areas, particularly parts of the Cascades, Rockies, and southern California. But amounts were not enough to bring month-to-date totals to near normal values, with these areas still well below normal for the month. And snowpack improved little, with just a few inches of new snow added to most Cascade and Coastal mountain SNOTEL sites. Mountain snowpack and SWE values were still well below normal to near-record low in Washington, Oregon, Idaho, and Montana. In California, as of February 27, mountain SWE was 94% of normal in the northern Sierra Nevada Mountains, 78% of normal in the Central Sierra, and 76% of normal in the southern Sierra. In Washington, D0-D1 was expanded in the northern Cascades and D1 added to the Olympic Mountains to reflect the low snowpack and subnormal precipitation. Low SWE and 1- to 4-month SPEI values resulted in expansion of D0-D3 in parts of Montana.

Full Summary

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