202501 - Windstorm - Eowyn

Material from: Linus, Ivan, ...

1. Overview

Storm Éowyn brought on 24 January extreme winds to Ireland and western parts of the UK. Wind gusts peaked at 51 m/s on the western Irish coast in Mace Head where mean wind of 38 m/s between 04:00 and 05:00 UTC and an hour earlier, a mean wind of 38 m/s was recorded (the station stopped reporting after 05UTC). Inland Connaught Airport has recoded a maximum wind gust of 43 m/s while other stations in Ireland reported 35 m/s. 

https://www.irishtimes.com/ireland/2025/01/23/how-will-storm-eowyn-impact-the-west-of-ireland-what-to-expect-from-met-eireanns-danger-to-life-warning/

https://www.severe-weather.eu/global-weather/storm-eowyn-windstorm-ireland-bomb-cyclone-uk-north-atlantic-europe-mk/

2. Analyses and Observations

2.1 Event Defintion

2.2 Analyses

2.3 Observations

Water-vapour satellite images from Meteosat, every 3rd hour.

Sounding 24 January 00UTC from Valencia

2.4 Climatological perspective

3. Forecasts

3.1 Data assimilation and observation usage

3.2 Single Forecasts

Observations for the event

Control forecast

DestinE

AIFS deterministic

AIFS ensemble

3.3 Ensemble distribution

EFI

Forecast Evolution plot

The plots below show cyclone feature plots for minimum surface pressure valid 24 January 00UTC from different initial times.

3.4 Sub-seasonal forecasts

3.5 Comparison with other centres

4. Hazard Forecasts

5. Dedicated Experiments

6. Event Summary

6.1 Good and bad aspects of the forecasts for the event

6.2 Experience from general performance/other cases

7. Additional material