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Monthly Weather Events - Shannon

Weather events for Shannon_Airport up to 31-Aug-2018

Number of days with Rainfall > 10mm.

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2018 8 3 0 0 2 0 3 1 n/a n/a
2017 1 2 3 0 1 3 4 1 3 1 4 4
2016 1 4 1 0 1 1 0 5 1 1 2 4
2015 2 3 3 2 3 0 1 1 3 1 6 8

Number of days with a maximum 10-min. mean wind speed >= 15m/s

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2018 9 3 2 3 0 1 0 0 n/a n/a
2017 1 2 3 1 0 1 1 0 2 3 1 4
2016 4 5 3 1 0 0 0 1 2 0 0 1
2015 7 4 8 0 0 2 0 1 0 0 11 9

Number of days with Minimum Temperature < 0 deg. C

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2018 2 7 11 2 0 0 0 0 n/a n/a
2017 4 4 0 0 0 0 0 0 0 0 2 6
2016 0 4 3 1 0 0 0 0 0 0 8 3
2015 5 6 4 1 0 0 0 0 0 0 0 0

An objective and measurable approach was adopted in relation to what is considered to be a weather event which could trigger a delay event, i.e. the contractor gets additional time. A delay event is triggered when a weather event exceeds a defined threshold (90th percentile) value in any given month.

Weather events are:

  • Number of days per month with a rainfall amount > 10mm.
  • Number of days per month with a maximum 10-min. mean wind speed >=15m/s.
  • Number of days per month with a minimum temperature < 0 deg. C.

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