TY - JOUR AU - Austin, Jill F. AB - which would blow over a wooden fence in the south of England would probably be regarded as a breeze in the north of Scotland. Gale definitions The formal definition of a gale day is when the wind speed, averaged over a 10-minute period, exceeds 33kn (-16ms-*), which is Beaufort force 8. This is a very strong wind speed, which is rarely recorded away from the coasts and exposed headlands in the UK. Unfortunately, there are very few sites in the UK that have records of daily wind data, and the maximum length of homogenous site records is of the order of only 30 years (Hulme and Jones 1991). Therefore, Jenkinson and Collison (1977) developed an index of gale days from gridded sealevel pressure gradients. This was calibrated with monthly frequency of gales in the sea areas around the British Isles for a 10-year period. Hulme et al. (1993) used this index to calculate gale frequencies for the British Isles from 1881 to 1990. The annual distribution has a pronounced peak in January and a minimum in July, in common with the definition in the Meteorological glossay (Meteorological Office 1991). However, what about windy days which do not meet TI - Equinoctial gales: Fact or fiction? JO - Weather DO - 10.1002/j.1477-8696.1995.tb05500.x DA - 1995-10-01 UR - https://www.deepdyve.com/lp/wiley/equinoctial-gales-fact-or-fiction-XZDhyjYliJ SP - 330 VL - 50 IS - 10 DP - DeepDyve ER -