Drought Information Statement
Issued by NWS Rapid City, SD

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Drought Information Statement
National Weather Service Rapid City SD
820 AM MDT Thu Oct 19 2017

...Drought Conditions Continue Across Western South Dakota...

SYNOPSIS...

Drought conditions have improved slightly across south central South
Dakota. However, long term precipitation deficits remain across much
of the area.

The latest U.S. Drought Monitor depicts:

* Extreme (D3) drought conditions across far southwestern Ziebach,
  eastern Meade, far eastern Pennington, and northwestern Haakon
  Counties.
* Severe (D2) drought conditions covered the rest of Ziebach County,
  as well as Perkins and parts of far northeastern Harding, far
  eastern Butte, central Meade, eastern Pennington, and northern
  Jackson Counties.
* Moderate (D1) drought in South Dakota covered the rest of Harding,
  Butte, Meade, Haakon, and Jackson Counties, as well as central
  Pennington, eastern Custer, northeastern Fall River, most of
  Oglala Lakota, Bennett, western Todd, and western Mellette
  Counties. In northeastern Wyoming, Moderate (D1) drought
  conditions covered far northern Campbell and northern Crook
  Counties.
* Abnormally dry (D0) conditions covered 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.
Stock ponds and dugouts are dry or contain water of poor quality.
Numerous pasture and hay lands have not been able to recover from
the dry conditions over the summer.

CLIMATE SUMMARY...

Overall September precipitation ranged from above average across
northeastern Wyoming, far northwestern South Dakota, and south
central South Dakota to below average across southwestern South
Dakota into north central South Dakota. Temperatures in September
were around average. So far in October, temperatures and
precipitation have been below average.

PRECIPITATION/TEMPERATURE OUTLOOK...

Sea surface temperatures in the tropical Pacific Ocean are below
average, but are 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 average and precipitation will continue to trend below average.
For winter in the northern plains, temperatures should trend below
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 November calls for above average temperatures and
near average precipitation.

The three-month outlook for November, December, and January calls
for increased odds toward above-average temperatures and near to
above average precipitation.

The U.S. Monthly Drought Outlook indicates drought conditions will
persist through the winter.

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 in November 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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