Drought Information Statement
Issued by NWS Rapid City, SD
AXUS73 KUNR 131919 CCA
DROUGHT INFORMATION STATEMENT...corrected for minor spelling
NATIONAL WEATHER SERVICE RAPID CITY SD
845 AM MDT Thu Apr 13 2017
...Drought Conditions Continue Across Parts of Western South Dakota
and Northeastern Wyoming...
Recent rain and snow have helped ease drought conditions across
parts of western South Dakota, with status quo conditions across
northeastern Wyoming. Before our snow on Monday, April 10th, all of
the snowpack had already melted. But with the current warm weather
and relatively warm ground, our recent snow also is nearly
completely melted as of this writing. The current drought conditions
reflect long-term moisture deficits dating back to last summer.
At the beginning of April, Moderate (D1) drought conditions covered
Crook, Weston, and eastern Campbell counties in Wyoming. In western
South Dakota, Moderate (D1) drought conditions have been removed
except for the extreme western portion of the central Black Hills.
Abnormally dry (D0) conditions covered the rest of western Campbell
County, Wyoming, along with Fall River, Oglala Lakota, Custer,
Lawrence, Butte, most of Pennington, and the southwestern halves of
Harding and Meade Counties in South Dakota. Furthermore, the D0
conditions have been removed from Perkins, Ziebach, Haakon, Jackson,
and Bennett Counties.
SUMMARY OF IMPACTS...
* Soil moisture is beginning to recover in the top layers of the
ground due to the recent rain and snow.
* Stock ponds and dugouts are still low, which continues to limit
water for cattle and other animals.
Temperatures in March were above average across the entire area
(especially northeastern Wyoming and far western South Dakota),
while precipitation amounts were near to below average. It also
ranked in the top 10 as one of the least snowy months of March in
history. Snowfall in March was typically under an inch, with around
a foot in Lead. Typically, March is the snowiest month for western
South Dakota and northeastern Wyoming.
Sea surface temperatures in the tropical Pacific Ocean are near to
above average, indicating a possible developing El Nino. The outlook
for the spring and summer is for a continuation of the relatively
warm waters, with odds favoring El Nino conditions by the summer
into fall. If El Nino develops this summer, that would tilt the odds
toward increased chances of above average rainfall, with
temperatures near average.
The three month outlook for April, May, and June calls for equal
chances for below, average, and above-average temperatures, but with
odds tilted toward above-average precipitation.
HYDROLOGIC SUMMARY AND OUTLOOK...
According to the Bureau of Reclamation, reservoir levels are
slightly above average for this time of the year, with the exception
of Shadehill Reservoir, which is slightly below average. Streamflows
according to the U.S. Geological Survey have been around normal.
Links to hydrologic data from the U.S. Geological Survey and Bureau
of Reclamation can be found below.
The next drought statement will be issued in May unless conditions
The drought monitor is a multi-agency effort involving NOAA`s
National Weather Service and 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...
National Weather Service
300 East Signal Drive
Rapid City South Dakota 57701
RELATED WEB SITES...
U.S. Drought page...
South Dakota Climate and Weather Information...
Wyoming Water and Climate Information...
U.S. Drought Monitor...
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...
Black Hills Fire Restrictions...