Drought Information Statement
Issued by NWS Rapid City, SD

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AXUS73 KUNR 181826
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Drought Information Statement
National Weather Service Rapid City SD
1125 AM MDT Thu Jan 18 2018

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

SYNOPSIS...

Climatology speaking, we are in the driest time of the year.
However, precipitation and snowfall over the winter have been around
average, allowing for a slight improvement in drought conditions.
Precipitation during the winter is typically minimal, accounting for
less than 10% of the annual precipitation over the plains and about
15% of the annual precipitation in the Black Hills and Bear Lodge
Mountains.

The latest U.S. Drought Monitor depicts:

* Severe (D2) drought conditions covered Perkins, western Ziebach,
  eastern Butte, most of Meade, eastern Pennington, western Haakon,
  northern Jackson, northern Oglala Lakota, and far northeastern
  Fall River Counties.
* Moderate (D1) drought in South Dakota covered the rest of Butte,
  Meade, Pennington, Fall River, Oglala Lakota, Jackson, Haakon,
  Ziebach Counties, as well as Harding, Custer, eastern Lawrence,
  Bennett, western Todd, and western Mellette Counties. In
  northeastern Wyoming, Moderate (D1) drought conditions covered far
  northeastern 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 producers due to dry
soils. 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...

Precipitation in 2017 ranged from 60% to 80% of average for most of
the area. So far in January, temperatures have been below average
and precipitation has been near average.

PRECIPITATION/TEMPERATURE OUTLOOK...

Sea surface temperatures in the tropical Pacific Ocean are below
average, indicating La Nina conditions. The outlook for the spring
and summer is for La Nina conditions to trend toward El Nino
Southern Oscillation (ENSO) neutral conditions. For the northern
plains, this pattern typically favors near average temperatures
through the spring. For precipitation, there are equal chances of
below, above, and average precipitation.

The outlook for the rest of January calls for near average
temperatures and precipitation.

The three-month outlook for February, March, and April calls for
near to below average temperatures and near to above average
precipitation.

The U.S. Monthly Drought Outlook indicates drought conditions will
persist through early spring.

HYDROLOGIC SUMMARY AND OUTLOOK...

According to the Bureau of Reclamation, December end of the month
reservoir elevations at Angostura, Belle Fourche, Deerfield,
Keyhole, and Pactola were above average for this time of the year.
However, end of the month reservoir elevation at Shadehill was below
average. October inflows into these reservoirs were mainly below
average, with the exception of inflows into Angostura, Deerfield and
Pactola which were above average.

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

NEXT ISSUANCE...

The next drought statement will be issued in February 2018.

&&

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

$$



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