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Intermountain West Drought Early Warning System

U.S. Drought Monitor - Intermountain West DEWS

U.S. Drought Monitor - Intermountain West DEWS
U.S. Drought Monitor - Intermountain West DEWS
Drought Conditions (Percent Area)
WeekNoneD0-D4D1-D4D2-D4D3-D4D4
Current
3/21/2017
67.74%32.26%14.61%1.07%0.04%0.00%
Last Week
3/14/2017
75.10%24.90%13.80%0.93%0.04%0.00%
Three Months Ago
12/20/2016
31.32%68.68%23.81%2.31%0.00%0.00%
Start of Calendar Year
1/03/2017
49.44%50.56%18.89%1.51%0.00%0.00%
One Year Ago
3/22/2016
25.57%74.43%24.16%2.74%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.

Conditions for the week of March 15-21

A pronounced dry signal over the past 60 days (10-35 percent of normal) led to an increase in Abnormal Dryness (D0) and Moderate Drought (D1) across eastern New Mexico.  Meanwhile, the Southwest’s lingering long-term drought areas are still exhibiting deficits beyond the 2-year window, with 3-year precipitation totals averaging 60 to 75 percent of normal.  In Colorado, unseasonable warmth (7-day average temperatures as much as 18°F above normal) and protracted dryness (6-month precipitation averaging 30 to 50 percent of normal) led to the expansion of Severe Drought (D2) in north-central portions of the state. Rain will be need soon everywhere east of the Rockies to prevent a rapid intensification of drought as winter wheat continues to break dormancy and soil moisture requirements increase.  

Read more about the Intermountain West DEWS