John Dee's Climate Normal

John Dee's Climate Normal

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John Dee's Climate Normal
John Dee's Climate Normal
Development & Analysis Of A UK Storm Indicator (part 7)

Development & Analysis Of A UK Storm Indicator (part 7)

Today I start turning the handle on daily wind speed data as gathered by 26 Irish weather stations since WWII.

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John Dee
Mar 07, 2025
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John Dee's Climate Normal
John Dee's Climate Normal
Development & Analysis Of A UK Storm Indicator (part 7)
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OK, so I’ve got two cleaned and prepped data files ready to fry that span the period October 1939 – August 2021. One of these contains records of daily mean wind speed in units of metres per second; the other contains records of daily maximum wind speed attained (a.k.a. gust speed) in the same metric units. Please have your trusty hand-held calculators at the ready to convert these unfamiliar beasts to the familiar imperial measures of mph.

NOTE: A gale force wind is defined as having a speed between 34 and 47 knots (17.5 – 24.2 m/s). On the Beaufort scale gale force winds correspond to wind forces 8 and 9, with force 8 ranging from 34 to 40 knots (17.5 – 20.6 m/s), and force 9 ranging from 41 to 47 knots (21.1 – 24.2 m/s). Storm Force 10 on the Beaufort scale corresponds to winds with a speed ranging from 48 to 55 knots (24.7 - 28.3 m/s).

Just to convince you that we are dealing with the real deal here I’m going to produce a summary table of maximum gust speeds in descending order of v…

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