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Estimated intensity
- no signal — Below the event threshold. Radar indicated no relevant hail.
- light — Above the event threshold, in the lowest band of the archive.
- moderate — Mid band of the historical archive.
- severe — High band — most body-damage events land here.
- extreme — Top of the historical archive. Rare.
Ordinal class from measured percentiles. Colors show relative radar signal strength — not hail size.
Technical detail of the 11 bands
MESH quantization bands in inches. This is the internal radar reading, not a hail size measurement (measured correlation r=0.31).
| # | MESH | Class |
|---|---|---|
| 1 | 0.25–0.49 in | no signal |
| 2 | 0.50–0.74 in | light |
| 3 | 0.75–0.99 in | light |
| 4 | 1.00–1.17 in | light |
| 5 | 1.18–1.49 in | moderate |
| 6 | 1.50–1.69 in | moderate |
| 7 | 1.70–1.99 in | severe |
| 8 | 2.00–2.13 in | severe |
| 9 | 2.14–2.99 in | extreme |
| 10 | 3.00–3.99 in | extreme |
| 11 | ≥ 4.00 in | extreme |
light: 0.50–1.17 in · moderate: 1.18–1.69 in · severe: 1.70–2.13 in · extreme: ≥ 2.14 in