| Percent of U.S. Mainland in
Selected Drought Ranges -- May 9, 2009 |
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| Percentile Range |
Short-Term Drought Indicator Blend |
Long-Term Drought Indicator Blend |
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| Current | Anomaly* | Percentile* | Change** | Current | Anomaly* | Percentile* | Change** | |
| 0-30 (D0) | 20.82 | - 9.36 | 30.42 | + 0.73 | 20.41 | - 9.80 | 34.49 | - 0.79 |
| 0-20 (D1) | 13.87 | - 6.27 | 37.50 | + 0.53 | 14.19 | - 6.00 | 42.46 | + 2.59 |
| 0-10 (D2) | 5.51 | - 4.56 | 37.94 | - 0.22 | 2.94 | - 7.19 | 28.21 | - 1.42 |
| 0-5 (D3) | 3.31 | - 1.79 | 50.25 | + 2.16 | 1.34 | - 3.79 | 36.18 | + 0.66 |
| 0-2 (D4) | 1.89 | - 0.18 | 69.67 | + 1.88 | 0.66 | - 1.40 | 52.54 | + 0.38 |
| *Anomalies & percentiles based on monthly 1932
- 2001 data from National Climatic Data Center. **Change from Previous Week's Percentage of U.S. Covered |
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