508  
AXUS73 KUNR 211440  
DGTUNR  
 
DROUGHT INFORMATION STATEMENT  
NATIONAL WEATHER SERVICE RAPID CITY SD  
840 AM MDT THU SEP 21 2017  
 
...DROUGHT CONDITIONS DECREASE SLIGHTLY ACROSS WESTERN SOUTH  
DAKOTA...  
 
SYNOPSIS...  
 
DROUGHT CONDITIONS DID NOT CHANGE MUCH THIS PAST WEEK ACROSS WESTERN  
SOUTH DAKOTA AND NORTHEASTERN WYOMING, ALTHOUGH SOME BENEFICIAL  
RAINS, ESPECIALLY OVER NORTHWESTERN SOUTH DAKOTA, HAVE EASED THE  
DROUGHT SOMEWHAT IN THAT AREA.  
 
THE LATEST U.S. DROUGHT MONITOR DEPICTS:  
 
* EXTREME (D3) DROUGHT CONDITIONS ACROSS FAR SOUTHWESTERN ZIEBACH,  
EASTERN MEADE, FAR NORTHEASTERN PENNINGTON, WESTERN HAAKON,  
AND NORTHERN JACKSON COUNTIES.  
* SEVERE (D2) DROUGHT CONDITIONS COVERED THE REST OF ZIEBACH,  
JACKSON, AND HAAKON COUNTIES, AS WELL AS PERKINS AND PARTS OF  
NORTHEASTERN HARDING, EASTERN BUTTE, CENTRAL MEADE, EASTERN  
PENNINGTON, EASTERN BENNETT, WESTERN MELLETTE, AND WESTERN TODD  
COUNTIES IN SOUTH DAKOTA.  
* MODERATE (D1) DROUGHT IN SOUTH DAKOTA COVERED THE REST OF HARDING,  
BUTTE, MEADE, BENNETT, MELLETTE, AND TODD COUNTIES, AS WELL AS  
CENTRAL PENNINGTON, EASTERN CUSTER, NORTHEASTERN FALL RIVER, MOST  
OF OGLALA LAKOTA, AND TRIPP COUNTIES. IN NORTHEASTERN WYOMING,  
MODERATE (D1) DROUGHT CONDITIONS COVERED FAR NORTHERN CAMPBELL AND  
NORTHERN CROOK COUNTIES.  
* ABNORMALLY DRY (D0) CONDITIONS COVERED NORTHEASTERN WESTON, 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.  
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 48  
PERCENT VERY SHORT OR SHORT AND SUBSOIL MOISTURE SUPPLIES RATED AT  
63 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...  
 
OVERALL AUGUST WAS COOLER THAN AVERAGE WITH BELOW NORMAL  
PRECIPITATION AMOUNTS. SEASONAL AND ANNUAL PRECIPITATION CONTINUES  
TO BE WELL BELOW AVERAGE.  
 
PRECIPITATION/TEMPERATURE OUTLOOK...  
 
SEA SURFACE TEMPERATURES IN THE TROPICAL PACIFIC OCEAN ARE TRENDING  
BELOW AVERAGE, BUT 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 TO ABOVE AVERAGE AND PRECIPITATION WILL CONTINUE TO TREND BELOW  
AVERAGE. FOR WINTER IN THE NORTHERN PLAINS, TEMPERATURES SHOULD  
TREND NEAR TO 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 THE REST OF SEPTEMBER INTO EARLY OCTOBER CALLS FOR  
BELOW AVERAGE TRANSITIONING TO ABOVE AVERAGE TEMPERATURES, WITH NEAR  
AVERAGE PRECIPITATION.  
 
THE ONE-MONTH OUTLOOK FOR OCTOBER (AS WELL AS THE THREE-MONTH  
OUTLOOK FOR OCTOBER, NOVEMBER, AND DECEMBER) 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 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 AROUND SEPTEMBER 28, 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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