Percent of U.S. Mainland in Selected
Drought Ranges -- May 5, 2007
Percentile
Range
Short-Term
Drought Indicator Blend
Long-Term
Drought Indicator Blend
 Current   Anomaly*   Percentile*   Change**   Current   Anomaly*   Percentile*   Change** 
0-30 (D0)   27.37 - 2.82 47.12 - 0.43 31.97 + 1.76 58.77 - 1.20
0-20 (D1)   17.52 - 2.63 49.89 - 0.63 21.35 + 1.17 62.49 + 1.20
0-10 (D2)    8.18 - 1.90 52.47 + 0.78 12.78 + 2.66 71.11 + 3.86
0-5 (D3)    2.29 - 2.81 42.83 + 0.30  4.02 - 1.11 61.51 + 1.24
0-2 (D4)    0.54 - 1.53 45.44 + 0.40  1.09 - 0.97 60.68 + 0.00
*Anomalies & percentiles based on monthly 1932 - 2001 data from National Climatic Data Center.
**Change from Previous Week's Percentage of U.S. Covered