Percent of U.S. Mainland in Selected
Drought Ranges -- September 30, 2007
Percentile
Range
Short-Term
Drought Indicator Blend
Long-Term
Drought Indicator Blend
 Current   Anomaly*   Percentile*   Change**   Current   Anomaly*   Percentile*   Change** 
0-30 (D0)   29.34 - 0.84 52.37 + 2.82 45.81 +15.60 81.10 + 0.28
0-20 (D1)   15.26 - 4.88 42.18 - 0.19 32.72 +12.53 81.09 + 0.42
0-10 (D2)    8.12 - 1.96 52.15 + 1.35 20.19 +10.06 86.82 + 2.57
0-5 (D3)    4.40 - 0.70 60.49 + 1.70  9.97 + 4.84 85.57 + 0.44
0-2 (D4)    2.33 + 0.26 74.39 + 1.62  3.61 + 1.55 84.46 - 0.09
*Anomalies & percentiles based on monthly 1932 - 2001 data from National Climatic Data Center.
**Change from Previous Week's Percentage of U.S. Covered