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Intermountain West Drought Early Warning System

Conditions for the week of November 20-26, 2019

The Southwest’s most significant storm since spring 2019 delivered drought-easing precipitation in Arizona and portions of neighboring states, starting on November 19. A record-setting, 155-day streak without measurable precipitation finally ended in Saint George, Utah, as 1.29 inches fell in a 24-hour period on November 19-20.  Elsewhere in Utah, Bryce Canyon Airport netted 1.85 inches in a 48-hour period from November 19-21.  In northern Arizona, Flagstaff received 2.37 inches (6.6 inches of snow) on November 20-21.  The 20th was a particularly wet day in several desert locations, including Kingman, Arizona (0.83 inch), and Las Vegas, Nevada (0.67 inch). General reductions in the severity of moderate to severe drought (D1 to D2) were introduced across Arizona’s wettest areas, including the central one-third of the state.  Farther east, however, drought continued to worsen in northeastern New Mexico, where severe drought (D2) was bridged across two previously existing areas.  On November 24, New Mexico’s topsoil moisture was rated 57% very short to short, according to USDA, while subsoil moisture was 68% very short to short. 

Read more about the Intermountain West DEWS

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
12/03/2019
36.72%63.28%42.62%22.76%0.00%0.00%
Last Week
11/26/2019
28.87%71.13%52.97%28.72%0.62%0.00%
Three Months Ago
9/03/2019
40.36%59.64%15.14%0.77%0.00%0.00%
Start of Calendar Year
1/01/2019
21.52%78.48%62.20%42.87%15.90%7.45%
Start of Water Year
10/01/2019
35.87%64.13%39.15%8.17%0.00%0.00%
One Year Ago
12/04/2018
18.47%81.53%63.99%43.60%16.18%7.69%

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.