Cumulonimbus and aviation at this altitude, updraughts with speeds that can exceed . Such an updraught speed corresponds to the wind speed of a small hurricane. The speed can even exceed . The maximum number in the Beaufort scale is 12 ("hurricane force" wind) and is assigned to wind speeds of 64 knots or greater. If the Beaufort scale were extended, these updraughts would have a Beaufort number of 14 "in the vertical direction". The turbulence is then "extreme" at this altitude. Moreover, the diameters of the updraught columns vary between 2 km (air mass thunderstorm) and 10 km (supercell thunderstorm). The height
1932 Bahamas hurricane the churches were reportedly carried . Newspaper reports and photos helped to establish estimated prevailing winds on Green Turtle Cay that possibly exceeded during the hurricane. After the storm passed Abaco on September 6 and 7, several vessels caught in the storm recorded winds of Force 12 (Beaufort Wind Scale) and low barometric pressures; the steamship "Yankee Arrow" recorded a pressure of on September 7, while the nearby steamship "Deer Lodge" reported a lower pressure of . Although storm warnings were posted for the Florida and eastern United States coastline, the storm's recurvature prevented a landfall, leaving the main effects