| Percent of U.S. Mainland in
Selected Drought Ranges -- December 22, 2007 |
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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) | 9.90 | -20.28 | 6.66 | - 2.83 | 37.56 | + 7.35 | 68.90 | - 1.00 |
| 0-20 (D1) | 4.34 | -15.81 | 6.62 | - 0.74 | 23.45 | + 3.27 | 65.66 | - 2.52 |
| 0-10 (D2) | 0.61 | - 9.46 | 5.54 | + 0.17 | 10.38 | + 0.25 | 64.06 | - 1.47 |
| 0-5 (D3) | 0.00 | - 5.10 | 0.00 | + 0.00 | 4.84 | - 0.29 | 66.19 | + 0.00 |
| 0-2 (D4) | 0.00 | - 2.07 | 0.00 | + 0.00 | 1.87 | - 0.19 | 71.13 | + 0.17 |
| *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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