Percent of U.S. Mainland in Selected
Drought Ranges -- September 1, 2007
Percentile
Range
Short-Term
Drought Indicator Blend
Long-Term
Drought Indicator Blend
 Current   Anomaly*   Percentile*   Change**   Current   Anomaly*   Percentile*   Change** 
0-30 (D0)   45.16 +14.97 83.35 + 2.72 48.92 +18.71 83.85 + 1.39
0-20 (D1)   33.96 +13.82 85.78 + 1.00 36.20 +16.01 84.80 + 0.24
0-10 (D2)   22.39 +12.31 90.22 + 1.74 21.82 +11.69 88.57 + 1.72
0-5 (D3)   15.13 +10.03 92.94 + 1.54 11.88 + 6.75 88.58 - 0.46
0-2 (D4)    7.67 + 5.60 93.80 - 0.01  6.05 + 3.99 91.42 + 0.31
*Anomalies & percentiles based on monthly 1932 - 2001 data from National Climatic Data Center.
**Change from Previous Week's Percentage of U.S. Covered