Beaufort scale the extension to 17 noted above. China also switched to this extended version without prior notice on the morning of 15 May 2006, and the extended scale was immediately put to use for Typhoon Chanchu. Hong Kong and Macau retain force 12 as the maximum. In the United States, winds of force 6 or 7 result in the issuance of a small craft advisory, with force 8 or 9 winds bringing about a gale warning, force 10 or 11 a storm warning ("a tropical storm warning" being issued instead of the latter two if the winds relate to a tropical
Daniel Cornelius de Beaufort succeeded by Samuel Grove. De Beaufort married Esther Gougeon and they had a son Daniel Augustus Beaufort (1739–1821) who was a priest and distinguished cartographer. His son was Sir Francis Beaufort (1774-1857), Royal Navy officer and hydrographer and the inventor of the Beaufort Scale for indicating wind force. In 1746, de Beaufort accompanied the Earl of Harrington to Ireland as chaplain and in 1747 he received the benefice of Navan, Meath. In 1753 he was appointed to be Provost of Tuam and he later became rector of Clonenagh. Daniel Cornelius de Beaufort Daniel Cornelius de Beaufort (1700-1788) was rector of