Percent of U.S. Mainland in Selected
Drought Ranges -- September 15, 2007
Percentile
Range
Short-Term
Drought Indicator Blend
Long-Term
Drought Indicator Blend
 Current   Anomaly*   Percentile*   Change**   Current   Anomaly*   Percentile*   Change** 
0-30 (D0)   35.96 + 5.77 68.24 + 0.19 47.30 +17.09 82.62 + 0.54
0-20 (D1)   23.87 + 3.73 66.98 - 4.65 35.74 +15.56 84.46 + 1.49
0-10 (D2)   11.98 + 1.90 68.93 - 7.22 20.34 +10.21 86.90 - 0.51
0-5 (D3)    3.87 - 1.23 55.26 - 6.61 11.50 + 6.37 87.90 - 0.69
0-2 (D4)    0.71 - 1.36 49.41 - 5.49  4.04 + 1.98 86.32 - 1.16
*Anomalies & percentiles based on monthly 1932 - 2001 data from National Climatic Data Center.
**Change from Previous Week's Percentage of U.S. Covered