Drought Information Statement
Issued by NWS Rapid City, SD

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Drought Information Statement
National Weather Service Rapid City SD
745 AM MDT Thu Apr 19 2018

...Drought Conditions Improve Across the Northern High Plains...

SYNOPSIS... Recent moisture has helped to improve drought conditions
across northeastern Wyoming and western South Dakota. Since January,
precipitation has been above average and temperatures have been well
below average. Snow cover ranges from little to no snowpack across
the plains to around 20 inches in the higher elevations of the Black
Hills and Bear Lodge Mountains.

The latest U.S. Drought Monitor depicts:

*  Moderate (D1) drought conditions covered Perkins, most of Meade,
   Ziebach, western Haakon, eastern Pennington, and northeastern
   Harding Counties.
*  Abnormally dry (D0) conditions covered the rest of Perkins,
   Meade, Haakon, eastern Harding Counties, as well as central
   Pennington, eastern Butte, far northeastern Custer, Jackson, and
   northwestern Mellette Counties.

SUMMARY OF IMPACTS... Long-term drought impacts continue to be
reported by producers, including the slow recovery of pasture
conditions.

CLIMATE SUMMARY... During the Fall of 2017, precipitation was below
average and temperatures were above average across northeast Wyoming
and western South Dakota. However, since December 1, all areas have
seen above average precipitation and below average temperatures.

In February, temperatures were well below average and precipitation
was above average. In fact, it was one of the coldest, wettest, and
snowiest Februarys` on record for most locations. In March,
temperatures continued to be well below average with above average
precipitation.

So far, the cold and wet trend has continued into April.
Temperatures so far in April are at least 6 to 12 degrees below
average. Precipitation is above average by a half-inch to an inch.
Average high temperatures for April are in the lower to middle 50s
with average lows in the lower 30s. Average precipitation typically
ranges from around two inches on the plains to over three inches in
the Black Hills.

PRECIPITATION/TEMPERATURE OUTLOOK... Sea surface temperatures in the
tropical Pacific Ocean have been warming for the past month,
indicating a trend toward El Nino Southern Oscillation (ENSO)
neutral conditions. For the Northern Plains, this pattern typically
favors below average temperatures and above average precipitation
through the early spring before trending to a warmer and drier
pattern by early summer.

The outlook for May calls for a greater chance for below average
temperatures and above average precipitation.

The three month outlook for May, June, and July calls colder and
wetter than average conditions in early May trending to warm and
dry conditions by July.

The U.S. Monthly Drought Outlook indicates drought conditions will
improve through the spring.

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

NEXT ISSUANCE... The next drought statement will be issued in the
middle of May 2018, unless conditions change sooner.

&&

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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