| Wind Strength | Wind Speed | Ranged Weapon Penalty/Siege Weapon Penalty | Check Size | Blown Away Size | Skill Penalty |
|---|---|---|---|---|---|
| Light | 0–10 mph | —/— | — | — | — |
| Moderate | 11–20 mph | —/— | — | — | — |
| Strong | 21–30 mph | –2/— | Tiny | — | –2 |
| Severe | 31–50 mph | –4/— | Small | Tiny | –4 |
| Windstorm | 51-119 mph | Impossible/–4 | Medium | Small | –8 |
| Hurricane | 120-170 mph | Impossible/-8 | Large | Medium | -12 |
| Tornado | 170+ mph | Impossible/Impossible | Huge | Large | -16 |