convertimate Tornado scales

Enhanced Fujita rating to TORRO rating

Type a value in EF scale to get it in TORRO instantly.

T5TORRO

That's 1.35× as strong as a strong EF2 tornado, while a violent EF4 tornado is 1.1× stronger.

What it means

How strong is that tornado?

EF uses three-second gusts and the old F-scale fastest-quarter-mile winds, so the same rating number means different speeds. Ratings are estimated from damage.

The math

How to convert EF scale to TORRO

EF ratings are gust bands: EF0 = 65–85 mph, EF1 = 86–110, EF2 = 111–135, EF3 = 136–165, EF4 = 166–200, EF5 over 200. TORRO: v = 2.365 × (T + 4)^1.5 m/s.

Example: EF4 EF scale = T5 TORRO.

Every unit

That tornado on every scale

Tables

EF scale to TORRO conversion table

EF scale to TORRO conversion table
EF scaleTORRO
EF0 EF scaleT1 TORRO
EF1 EF scaleT2 TORRO
EF2 EF scaleT3 TORRO
EF3 EF scaleT4 TORRO
EF4 EF scaleT5 TORRO
EF5 EF scaleT7 TORRO
TORRO to EF scale conversion table
TORRO to EF scale conversion table
TORROEF scale
T1 TORRObelow EF0 EF scale
T2 TORROEF0 EF scale
T4 TORROEF2 EF scale
T5 TORROEF3 EF scale
T6 TORROEF4 EF scale
T7 TORROEF4 EF scale

Quick answers

Quick answers

How many TORRO is EF1 EF scale?
EF1 EF scale is T2 TORRO.
How many TORRO is EF4 EF scale?
EF4 EF scale is T5 TORRO.

The units

About these units

Enhanced Fujita rating (EF scale)

EF0 to EF5, used in the US and Canada.

TORRO rating (TORRO)

T0 to T11, used in Britain and Europe: v = 2.365 (T + 4)^1.5 m/s.

Learn more about tornado units

Keep going

Related conversions