Drought Conditions Expand Across Western South Dakota and Northeastern Wyoming

Updated on Thursday November 29, 2012

Synopsis

Drought conditions as of November 29. Exceptional /D4/ drought conditions are located across portions of South Dakota and Wyoming. This includes Weston County and southeastern Campbell County in northeastern Wyoming and southwestern Fall River, eastern Shannon, eastern Pennington, southern Meade, Haakon, Jackson, Bennett, Mellette, Todd, and Tripp Counties in South Dakota. Extreme /D3/ drought conditions cover the southern portions of Campbell and Crook Counties in northeastern Wyoming; in South Dakota extreme /D3/ drought covers southern Butte, Lawrence, western Pennington, Custer, northeastern Fall River, western Shannon, southern Ziebach, and the rest of Meade County. The rest of northwestern South Dakota and northeastern Wyoming was classified as severe /D2/ drought conditions. 

Summary of Impacts

  • For the week of November 26, the wheat crop was rated 64% poor to very poor condition, the worst of any state.
  • As of November 25, only 60% of winter wheat is reported emerged, compared to 100% normally at this time of year.
  • Most dugouts and stock ponds across northeastern Wyoming and South Dakota have dried up or are an unsuitable water source for cattle and other animals.
  • Pasture and rangeland conditions are reported as very poor.

Climate Summary

For November temperatures were above average and precipitation ranged from below average across south central South Dakota to near average elsewhere.

Average high temperatures in November are typically in the middle 40s and average lows are in the middle 20s. Average precipitation is between a half inch and an inch for the plains with 1.5 to 2.0 inches for the Black Hills and Bear Lodge Mountains.

Precipitation and Temperature Outlook

The outlook for December indicates below average temperatures with equal chances of above, below, and average precipitation. Average high temperatures for December are in the 30s with average lows in the teens. Average precipitation is between a third to two thirds of an inch on the plains and around 1.5 inches in the Black Hills and Bear Lodge Mountains.

Hydrologic Summary and Outlook

The table below shows reservoir percent of average capacity on November 29 according to the Bureau of Reclamation (USBR).

Reservoir Percent of Normal Feet from Full
Angostura 61% 12.4 ft
Belle Fourche 44% 14.7 ft
Deerfield 98% 0.6 ft
Keyhole 79% 4.7 ft
Pactola 86% 9.6 ft
Shadehill 66% 9.4 ft

Questions or Comments

If you have any questions or comments about this drought information please contact,

Melissa Smith
Drought Focal Point
National Weather Service
300 East Signal Drive
Rapid City South Dakota 57701
Telephone 605-341-9271
E-mail melissa.smith@noaa.gov 

Acknowledgements

The drought monitor is a multi-agency effort involving NOAA's National Weather Service (NWS) and National Climatic Data Center, the United States Department of Agriculture (USDA), state and regional center climatologists, and the National Drought Mitigation Center. Information for this statement has been gathered from NWS and Federal Aviation Administration observation sites, state cooperative extension services, USDA, USBR, and USGS.


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