Ongoing analysis Material from: Linus
Discussed in the following Daily reports:
http://intra.ecmwf.int/daily/d/dreport/2014/02/10/sc/
http://intra.ecmwf.int/daily/d/dreport/2014/02/12/sc/
1. Impact
On the 12 February a storm hit Ireland, Wales and western England. The storm caused power cuts 65000 homes on Ireland and 50000 homes in Wales.
http://www.bbc.co.uk/news/uk-26166796
For the event, red warnings were issued for high wind speeds on Ireland, Wales and western England (see figure above from meteoalarm.eu).
2. Description of the event
Satellite images from yr.no
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The figures above shows satellite images from yr.no. The first figure is for 12 February 00UTC and the following are with 3 hours apart. The maximum reported gust was 108 mph (48 m/s) according to BBC.
The figures above shows maximum observed wind gusts during 12 February (24-hour period). Several stations on Ireland and Wales/England reported wind gusts above 40 m/s.
3. Predictability
3.1 Data assimilation
3.2 HRES
HRES wind gusts |
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The series of figures above shows HRES forecasts of the maximum wind gust during the 12 February and the MSLP valid 12 UTC. The colour scale is the same as for the observations in the previous section. The first forecast is from 12 february 00 UTC and the following is 11 February 00UTC and so on (with 1 day apart).
3.3 ENS
Dalmatian plots for wind speed |
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Dalmatian plots for maximum wind speed at ~1km around a cyclonic feature.
EFI for wind gusts |
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Extreme index forecasts for maximum wind gusts valid on the 12 February, from 1 (12 Nov 00UTC), 2, 3, 4, 5 days before the event. The figures also includes the values for the 99th percentile.
3.4 Monthly forecasts
3.5 Comparison with other centres
4. Experience from general performance/other cases