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Published September 23, 2010
Arizona Drought Status(data through 9/14/10)
Data Source(s): U.S. Drought Monitor
Spotty monsoon precipitation has continued to help keep short-term drought conditions at bay across much of southeast Arizona. In most parts of Arizona outside the southeast, however, precipitation in the last month has been below average (Figure 4a). This had led to persistence of the abnormally dry conditions in the northern and western parts of the state and the expansion of moderate drought conditions through most of Mohave County. The overall area experiencing some drought conditions is the same as last month. However, while abnormally dry conditions dropped 5 percent to 4 percent during the last 30 days, moderate drought conditions or worse have expanded by an equal amount (Figure 4b). The most recent seasonal precipitation forecast issued by the NOAA–Climate Prediction Center (CPC) calls for increased odds for a dry winter (see page 15). This forecast reflects a greater than 90 percent chance that the La Niña event will persist through March. La Niña events often bring below-average precipitation to the Southwest.
Drought impacts reported by Arizona DroughtWatch support the current depiction of drought status across Arizona. Reports indicate low range productivity, increasing forage toxicity, and the need for water hauling in some areas, among other impacts. More drought impact reports can be viewed on Arizona Droughtwatch’s webpage at http://azdroughtwatch.org/.Notes:
The Arizona section of the U.S. Drought Monitor is released weekly (every Thursday) and represents data collected through the previous Tuesday. The maps are based on expert assessment of variables including (but not limited to) the Palmer Drought Severity Index, soil moisture, streamflow, precipitation, and measures of vegetation stress, as well as reports of drought impacts. It is a joint effort of several agencies.
For the most current drought status map, visit:
For monthly short-term and quarterly long-term Arizona drought status maps, visit:
Southwest Climate Outlook Staff
- Michael Crimmins, UA Extension Specialist
- Stephanie Doster, Institute of the Environment Editor
- Gregg Garfin, Founding Editor, Institute of the Environment
- Zack Guido, Managing Editor, CLIMAS Associate Staff Scientist
- Nancy J. Selover, Arizona State Climatologist
- Jessica Dollin, CLIMAS Publications Assistant
- Dave Dubious, New Mexico State Climatologist
Please direct your Southwest Climate Outlook comments and suggestions to Zack Guido.
The CLIMAS Web site contains official and non-official forecasts, as well as other information. While we make every effort to verify this information, please understand that we do not warrant the accuracy of any of these materials.... Read full disclaimer