the Blackford scale is the official scale of the Hurricane Research Center of Indianapolis, created by head of the HRCI, Forecaster Blackford...it is a completely custom scale.
| Name | Winds | Impacts |
|---|---|---|
| Tropical Low | <29.4MPH | Very little damage, much comparable to a normal strong thunderstorm |
| Developing System | 29.5-32.8MPH | Minor damage, comparable to a normal severe thunderstorm/EF0 tornado |
| Tropical Depression | 32.9-38.6MPH | Damage slightly worse than a Developing System |
| Tropical Storm | 38.7-74.9MPH | Minor to severe damage, depending on the region...damage can range from EF0-like to EF2-like. |
| Weak Hurricane | 75-110.9MPH | Moderate to devastating damage, damage can range from EF1-like to EF4-like, replaces Category 1 and Category 2. |
| Medium Hurricane | 111-152MPH | Major to devastating damage, damage can range from EF3-like to low end EF5-like, replaces Category 3 and Category 4. |
| Category 5 Hurricane | 152.1-187.4MPH | Devastating damage, damage will be in the EF5 range. Entire towns decimated. |
| Category 6 Hurricane | 187.5MPH> | Historical damage, very few storms have reached this intensity. Entire counties completely wiped out and entire towns wiped off the face of the Earth with their people. |