Drought Information Statement
Issued by NWS Rapid City, SD

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AXUS73 KUNR 141337
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Drought Information Statement
National Weather Service Rapid City SD
737 AM MDT Thu Sep 14 2017

...Drought Conditions Expand Across Western South Dakota...

SYNOPSIS...

Drought conditions were expanded this week across western South
Dakota and northeastern Wyoming due to continued dry conditions. The
lack of rainfall over the past few weeks has prompted the expansion
of D3, Extreme Drought, through Jackson and into far northwestern
Mellette Counties. The dry conditions across much of the area have
caused an increase in fire activity and continue to impact the
agricultural community.

The latest U.S. Drought Monitor depicts:

* Extreme (D3) drought conditions across far northern Perkins, far
  northeastern Harding, far southwestern Ziebach, eastern Meade, far
  northeastern Pennington, western Haakon, northern Jackson, and far
  northwestern Mellette Counties.
* Severe (D2) drought conditions covered the rest of Perkins,
  Harding, Ziebach, Jackson and Haakon Counties, as well as most of
  Butte, parts of central Meade, eastern Pennington, eastern
  Bennett, western Mellette, and western Todd Counties in South
  Dakota.
* Moderate (D1) drought in South Dakota covered the rest of Butte,
  Meade, Bennett, Mellette, and Todd Counties as well as central
  Pennington, eastern Custer, northeastern Fall River, northeastern
  Oglala Lakota, and Tripp Counties. In northeastern Wyoming,
  Moderate (D1) drought conditions covered far northern Campbell and
  northern Crook Counties.
* Abnormally dry (D0) conditions covered northeastern Weston and the
  rest of Crook and northern Campbell Counties in northeastern
  Wyoming as well as rest of western South Dakota.

SUMMARY OF IMPACTS...

Drought impacts continue to be reported by agricultural producers.
Many impacts are related to crop failures in winter and spring
wheat. Other substantial impacts include cattle deaths due to poor
water quality and an increase in cattle sales due to feed shortages
and poor growth in pastures and hay lands. Soil moisture continues
to dry out, with the latest USDA South Dakota Crop Progress and
Condition Report indicating topsoil moisture supplies rated at 46
percent very short or short and subsoil moisture supplies rated at
60 percent short or very short. Also, reports now indicate the
pheasant population is beginning to suffer due to the drought
conditions.

Several counties in western South Dakota have declared local
emergency drought disaster resolutions and Governor Dennis Daugaard
has already declared a statewide drought emergency for South Dakota.
Transport restrictions have been eased, allowing the movement of
oversized loads of hay and feed with proper signage and reflectors
and landowners adjacent to highways may mow and bale hay along state
highways.

CLIMATE SUMMARY...

Overall August was cooler than average with below normal
precipitation amounts. Seasonal and annual precipitation continues
to be well below average.

PRECIPITATION/TEMPERATURE OUTLOOK...

Sea surface temperatures in the tropical Pacific Ocean are trending
below average, but still indicating neutral El Nino Southern
Oscillation (ENSO) conditions. The outlook for the fall and winter
is for possible La Nina conditions to develop. For the northern
plains in the fall, this typically means the temperatures will trend
near to above average and precipitation will continue to trend below
average. For winter in the northern plains, temperatures should
trend near average and precipitation would be near to slightly above
average, indicating a few more storms may be possible. Overall,
precipitation in the winter is only around an inch for the December
through February time period and is only about 7% of the annual
precipitation.

The outlook for the rest of September calls for a greater chance for
below average temperatures and above average precipitation.

HYDROLOGIC SUMMARY AND OUTLOOK...

According to the Bureau of Reclamation, reservoir levels at
Angostura, Deerfield, Keyhole, and Pactola were above average for
this time of the year. However, end of the month reservoir
elevations in August at Belle Fourche and Shadehill were below
average.

According to the U.S. Geological Survey 28-day average streamflow
compared to historical streamflow for the day of the year indicates
normal to below normal conditions across much of the area.

NEXT ISSUANCE...

The next drought statement will be issued around September 21, 2017.

&&

ACKNOWLEDGMENTS...

The drought monitor is a multi-agency effort involving NOAA`s
National Weather Service and the National Centers for Environmental
Information, United States Department of Agriculture (USDA), State
and Regional Climate Centers, and the National Drought Mitigation
Center at the University of Nebraska-Lincoln. Information for this
statement has been gathered from the NWS and Federal Aviation
Administration observing sites, State Cooperative Extension
Services, United States Department of Agriculture, Bureau of
Reclamation, and the United States Geological Survey.

QUESTIONS OR COMMENTS...

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

Melissa Smith
Service Hydrologist
National Weather Service
300 East Signal Drive
Rapid City South Dakota 57701
605-341-9271
melissa.smith@noaa.gov

RELATED WEB SITES...

U.S. Drought page...
http://www.drought.gov

South Dakota Climate and Weather Information...
http://climate.sdstate.edu

Wyoming Water and Climate Information...
http://www.wrds.uwyo.edu/

U.S. Drought Monitor...
http://droughtmonitor.unl.edu

River and Reservoir Information
NWS - http://water.weather.gov/ahps
USGS - http://www.usgs.gov/water
USBR - http://www.usbr.gov/gp/lakes_reservoirs

Climate Prediction Center...
http://www.cpc.ncep.noaa.gov

Black Hills Fire Restrictions...
http://blackhillsfirerestrictions.com

$$

Smith



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