Drought Information Statement
Issued by NWS Des Moines, IA

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AXUS73 KDMX 171653

Drought Information Statement
National Weather Service Des Moines IA
1153 AM CDT Thu Aug 17 2017

...Extreme Drought Conditions Developing in Southern Iowa...


Precipitation deficits continue to grow over much of the state as
the summer months begin to wind down. Most significant rainfall over
the last 3 months has been confined to north central and northeast
Iowa. Areas to the south and west are anywhere from 50 to 80 percent
below normal for the summer, causing areas of moderate to extreme
drought to develop during the growing season.

Some of the hardest impacted areas continue to be in the southern
tier of the state where there has been scant precipitation this
summer. Total precipitation at the Ottumwa Airport since the
June 1st is only 2.77 inches, which is 9.16 inches below normal for
the season. A lack of rainfall further north also has Des Moines 6.92
inches below normal for the summer, and 2.91 inches below normal at
Sioux City.


As of mid-August, extreme drought conditions have been introduced to
parts of south central and southeast Iowa. This includes the Highway
34 corridor in areas near Ottumwa, Chariton, and Osceola. Abnormally
dry conditions continue to support moderate to severe drought
conditions through central into northwest Iowa.

Open burn bans have expanded over the last couple weeks to include
six Iowa counties within the drought area.

Soil moisture continues to drop in southern Iowa, where parts of
the extreme drought area are now below the 5th to 10th percentile


Temperatures through the remainder of August look near to just below
normal, which should help limit excessive heat stress on crops.
However, the precipitation outlook over the next few weeks is not
favorable for widespread drought improvement. Near to below normal
precipitation is likely with no large organized precipitation events
expected. There may be some instances of localized heavier rainfall.


The Chariton River Basin lies within the extreme drought area. All
river gauge sites within this basin are running much below normal
for stream flow levels, according to the USGS as of Thursday August
17, 2017. This means that the the streamflow is less than the tenth
percentile for flow categories.


This product will be updated in late August or as necessary.


.Related websites...

Local weather...climate and water information -

Drought Monitor and information -

Iowa State University Cooperative Extension Service -

Iowa Environmental Mesonet -

Additional River Information -
   USGS - http://water.usgs.gov
   COE  - http://www.mvr.usace.army.mil

Climate Prediction Center -



If you have any questions or comments about this drought information
please contact:

   Craig Cogil
   Climate Services focal point
   National Weather Service
   Johnston...IA 50131
   email: craig.cogil@noaa.gov



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