Updated on Thursday, May 15, 2008 and Wednesday, May 28, 2008
As of May 15, severe /D2/ drought conditions are located across eastern Harding and western Perkins counties with another area of severe /D2/ drought over southern Fall River County. Elsewhere in South Dakota, moderate /D1/ drought conditions covered the rest of Fall River, Perkins and Harding counties and most of Custer and Shannon counties. Abnormally dry /D0/ conditions exist across Ziebach, Haakon, Jackson, Bennett, Pennington, Meade and Butte counties.
In northeast Wyoming, moderate /D1/ drought conditions exist over most of Weston County with abnormally dry /D0/ conditions over southern Campbell County.
On May 28, rainfall improved the overall drought conditions across the area. Drought severity improved to moderate /D1/ drought and abnormally dry /D0/ conditions. This will be the last statement issued until drought conditions return.
During the month of April, temperature and precipitation amounts were slightly below average. So far in May, temperatures have been below average. Precipitation in northwestern South Dakota and the northern Black Hills has already exceeded the average May precipitation totals with 3 to 7 inches already. Precipitation amounts in South Central South Dakota and northeastern Wyoming have been near average.
The Climate Prediction Center outlook for the rest of May calls for below average temperatures and above average precipitation.
Snow melt combined with heavy rain during the beginning of the month, caused minor flooding in the northern Black Hills, foothills and in northwestern South Dakota. Several culverts were washed out, many secondary roads were covered with water and numerous creeks and streams overflowed their banks.
According to the United States Geological Survey /USGS/, the 28-day average streamflow compared to historical streamflow is normal to above normal.
The table below shows the percent full of the reservoir conservation pool and the change in reservoir elevation over the past 30 days as calculated by the United States Bureau of Reclamation /USBR/.
|Reservoir||Percent of Normal||Elevation Change|
|Belle Fourche||81%||+5.5 ft|
If you have any questions or comments about this drought information please contact,
Melissa Smith or Lee Czepyha
Drought Focal Points
National Weather Service
300 East Signal Drive
Rapid City South Dakota 57701
E-mail email@example.com or firstname.lastname@example.org
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.