Drought Information Statement
Issued by NWS Rapid City, SD

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Drought Information Statement
National Weather Service Rapid City SD
735 AM MDT Thu Aug 17 2017

...Drought Conditions Continue Across Western South Dakota and
Northeastern Wyoming...

SYNOPSIS...

Drought conditions continue across the area due to the spotty nature
of recent rainfall. The dry conditions continue to impact the
agricultural community.

The latest U.S. Drought Monitor depicts:

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

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 66
percent very short or short and subsoil moisture supplies rated at
75 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...

July was hot with most areas receiving below average precipitation.
So far August has been cooler than average with some places
receiving near normal precipitation amounts. However, seasonal and
annual precipitation continues to be well below average.

PRECIPITATION/TEMPERATURE OUTLOOK...

Sea surface temperatures in the tropical Pacific Ocean are slightly
above average, indicating neutral El Nino Southern Oscillation
(ENSO) conditions. The outlook for the summer and fall is for a
continuation of the ENSO-neutral conditions. For the northern
plains, this means there are equal chances for above, below, and
near-average temperatures and precipitation.

The outlook for September calls for a greater chance for above
average temperatures and equal chances for above, below, and near-
average precipitation.

The three-month outlook for September, October, and November calls
for increased odds toward above-average temperatures and equal
chances for above, below, and near-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 at Belle Fourche and Shadehill were below average.
Inflows into Angostura, Belle Fourche, Deerfield, Pactola, and
Shadehill were below average in July, with Shadehill having their
5th lowest July inflow on record. The July inflow was the 4th
highest on record for Keyhole, which was mainly the result of runoff
from heavy rainfall on July 27.

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 at the end of August.

&&

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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