Continuous drought process categories & Monitoring period | Statistical feature quantity | Meteorological drought level | |||
Little-drought (2) | Mid-drought (3) | High-drought (4) | Extreme-drought (5) | ||
Summer and autumn and winter drought (monitoring period: December 1st to February 10th) | Number of consecutive drought days(d) | - | - | 67 - 90 | ≥91 |
Lifting rainfall (6d precipitation) | - | ≥30mm |