A summary of Beaufort scale, Fujita (F) and Enhanced Fujita (EF) tornado scales.
| Beaufort | F | EF | Wind speed | Description | Wave height | Sea conditions | Land conditions | ||||
| # | kn | km/h | mph | m/s | m | ft | |||||
| 0 | 0 | 0 | 0 | 0-0.2 | Calm | 0 | 0 | Flat. | Calm. Smoke rises vertically. | ||
| 1 | 1-3 | 1-6 | 1-3 | 0.3-1.5 | Light air | 0.1 | 0.33 | Ripples without crests. | Wind motion visible in smoke. | ||
| 2 | 4-6 | 7-11 | 4-7 | 1.6-3.3 | Light breeze | 0.2 | 0.66 | Small wavelets. Crests of glassy appearance, not breaking | Wind felt on exposed skin. Leaves rustle. | ||
| 3 | 7-10 | 12-19 | 8-12 | 3.4-5.4 | Gentle breeze | 0.6 | 2 | Large wavelets. Crests begin to break; scattered whitecaps | Leaves and smaller twigs in constant motion. | ||
| 4 | 11-15 | 20-29 | 13-18 | 5.5-7.9 | Moderate breeze | 1 | 3.3 | Small waves. | Dust and loose paper raised. Small branches begin to move. | ||
| 5 | 16-21 | 30-39 | 19-24 | 8.0-10.7 | Fresh breeze | 2 | 6.6 | Moderate (1.2 m) longer waves. Some foam and spray. | Smaller trees sway. | ||
| 6 | 22-27 | 40-50 | 25-31 | 10.8-13.8 | Strong breeze | 3 | 9.9 | Large waves with foam crests and some spray. | Large branches in motion. Whistling heard in overhead wires. Umbrella use becomes difficult. | ||
| 7 | 28-33 | 51-62 | 32-38 | 13.9-17.1 | Near Gale/Moderate gale | 4 | 13.1 | Sea heaps up and foam begins to streak. | Whole trees in motion. Effort needed to walk against the wind. | ||
| 8 | 34-40 | 63-75 | 39-46 | 17.2-20.7 | Fresh Gale | 5.5 | 18 | Moderately high waves with breaking crests forming spindrift. Streaks of foam. | Twigs broken from trees. Cars veer on road. | ||
| Beaufort | F | EF | Wind speed | Description | Wave height | Sea conditions | Land conditions | ||||
| # | kn | km/h | mph | m/s | m | ft | |||||
| F0 | 64-116 | 40-72 | 18-32 | Gale tornado | Light damage. Some damage to chimneys; branches broken off trees; shallow-rooted trees pushed over; sign boards damaged. | ||||||
| 9 | (F0) | 41-47 | 76-87 | 47-54 | 20.8-24.4 | Strong Gale | 7 | 23 | High waves (6-7 m) with dense foam. Wave crests start to roll over. Considerable spray. | Light structure damage. | |
| 10 | (F0) | 48-55 | 88-102 | 55-63 | 24.5-28.4 | Whole Gale/Storm | 9 | 29.5 | Very high waves. The sea surface is white and there is considerable tumbling. Visibility is reduced. | Trees uprooted. Considerable structural damage. | |
| 11 | (F0) | 56-63 | 103-119 | 64-73 | 28.5-32.6 | Violent storm | 11.5 | 37.7 | Exceptionally high waves. | Widespread structural damage. | |
| (F0) | EF0 | 105-137 | 65-85 | 29-38 | Light damage. Peels surface off some roofs; some damage to gutters or siding; branches broken off trees; shallow-rooted trees pushed over. Confirmed tornadoes with no reported damage (i.e. those that remain in open fields) are always rated EF0. |
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| F1 | (EF0) | 117-180 | 73-112 | 33-50 | Moderate tornado | Moderate damage. The lower limit is the beginning of hurricane wind speed; peels surface off roofs; mobile homes pushed off foundations or overturned; moving autos pushed off the roads; attached garages may be destroyed. | |||||
| Beaufort | F | EF | Wind speed | Description | Wave height | Sea conditions | Land conditions | ||||
| # | kn | km/h | mph | m/s | m | ft | |||||
| 12 | (F1) | (EF0) | 64-80 | 120 | 74-95 | 32.7-40.8 | Hurricane | 14+ | 46+ | Huge waves. Air filled with foam and spray. Sea completely white with driving spray. Visibility greatly reduced. | Considerable and widespread damage to structures. |
| (F1) | EF1 | 138-177 | 86-110 | 38-49 | Moderate damage. Roofs severely stripped; mobile homes overturned or badly damaged; loss of exterior doors; windows and other glass broken. |
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| (F1) | EF2 | 179-217 | 111-135 | 50-60 | Considerable damage. Roofs torn off well-constructed houses; foundations of frame homes shifted; mobile homes completely destroyed; large trees snapped or uprooted; light-object missiles generated; cars lifted off ground. |
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| F2 | (EF2) | 182-253 | 113-157 | 51-70 | Significant tornado | Considerable damage. Roofs torn off frame houses; mobile homes demolished; boxcars overturned; large trees snapped or uprooted; light-object missiles generated. | |||||
| (F2) | EF3 | 219-266 | 136-165 | 61-74 | Severe damage. Entire stories of well-constructed houses destroyed; severe damage to large buildings such as shopping malls; trains overturned; trees debarked; heavy cars lifted off the ground and thrown; structures with weak foundations blown away some distance. |
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| F3 | (EF3) | 254-332 | 158-206 | 71-92 | Severe tornado | Severe damage. Roofs and some walls torn off well-constructed houses; trains overturned; most trees in forest uprooted; heavy cars lifted off the ground and thrown. | |||||
| Beaufort | F | EF | Wind speed | Description | Wave height | Sea conditions | Land conditions | ||||
| # | kn | km/h | mph | m/s | m | ft | |||||
| (F3) | EF4 | 267-322 | 166-200 | 74-89 | Devastating damage. Well-constructed houses and whole frame houses completely leveled; cars thrown and small missiles generated. |
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| (F3) | EF5 | 322-up | 200-and up | 89-up | Incredible damage. Strong frame houses leveled off foundations and swept away; automobile-sized missiles fly through the air in excess of 100 m (109 yd); high-rise buildings have significant structural deformation; incredible phenomena will occur. So far only one EF5 tornado has been recorded since the Enhanced Fujita Scale was introduced on February 1, 2007. See Greensburg, Kansas tornado |
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| F4 | (EF5) | 333-418 | 207-260 | 93-116 | Devastating tornado | Devastating damage. Well-constructed houses leveled; structures with weak foundations blown away some distance; cars thrown and large missiles generated. | |||||
| F5 | (EF5) | 420-512 | 261-318 | 117-142 | Incredible tornado | Incredible damage. Strong frame houses lifted off foundations and carried considerable distances to disintegrate; automobile sized missiles fly through the air in excess of 100 m (109 yd); trees debarked; steel reinforced concrete structures badly damaged; incredible phenomena will occur. | |||||
| F6 | 513-610 | 319-379 | 143-169 | Inconceivable tornado | ... | ||||||
