| Percent of U.S. Mainland in
Selected Drought Ranges -- May 17, 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) | 27.01 | - 3.17 | 45.94 | + 6.19 | 21.65 | - 8.56 | 37.27 | + 1.23 |
| 0-20 (D1) | 15.54 | - 4.60 | 42.88 | + 1.67 | 14.13 | - 6.06 | 42.39 | - 0.06 |
| 0-10 (D2) | 10.06 | - 0.02 | 62.26 | + 4.54 | 2.94 | - 7.19 | 28.21 | + 0.00 |
| 0-5 (D3) | 3.37 | - 1.73 | 51.12 | + 0.05 | 0.96 | - 4.17 | 31.63 | - 0.38 |
| 0-2 (D4) | 0.00 | - 2.07 | 0.00 | - 1.89 | 0.00 | - 2.06 | 0.00 | - 0.66 |
| *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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