Storm Isha - Sunday 21/Monday 22 January 2024

Massive Thunder, lightning and flickering lights here in Achill now. Seems directly to the north of me. Didn't expect this before tomorrow.

I really hope this turns out to be a major anticlimax.

It needs to ... all we have got since that war started is winter winter winter and more winter ... last good summer was 2021 ... and all we get is lightning and rain and wind .... let us hope this is not a hurricane .... everyone is talking like it is but I do not see the official evidence yet ... either way still miserable unwanted weather ... give us something else ... but I do not think that will happen until this war ends ... it sucks in wind to fill the void caused by vacuum ... 31st December 2021 to May 2022 was the last time we had a really long spell of proper settled weather ...

Could be another Darwin type storm here in Limerick City with winds coming up the Estuary once again yikes. I remember Darwin very well, it blew the gutters off our roof, the noise sounded like constant grenades going off. 😬

Just checked the gfs and it decreased gusts by 10 12mph overnight for Donegal .

I would go red for Donegal, mayo, parts of Galway, possibly Clare, and isolated "tornadic streak" type red alert conditions are possible anywhere well exposed to SW-W winds. Various models picked up on this and have attempted to depict where these streaks may occur. But forecasting them is by no means an exact science. I do feel they will materialize, warnings associated will be of the "nowcast" variety.

The surface gradient may not be all that different from more moderate events, but the upper support is very strong and the dynamics will mix strong low level jet stream winds down near the ground. Worst conditions will be late afternoon but the southern inland tornadic wind streak potential may peak before the coastal wind maximum associated with windshift from SW to W (looks to be around 6-9 pm).

It's already getting windy in the Cork area. This event has sped up quite a bit its actually an afternoon/evening event now and will be clearing by around 10pm. Perhaps more dangerous now as more will be out in it!

Orange warnings should be brought forward by about 3 hours to reflect the system coming in quicker

I am very surprised with the tempo of this in cork already!

I travel quite a bit for work, and I’ve been cancelled/delayed/diverted quite a bit as a result.

it’s far too early to say what’ll happen re Dublin Airport and a flight tonight. Landing conditions are likely to be ok, The biggest factor for a later flight is actually whether or not your crew and plane can be in the right place for your flight to take place. If they’re subject to significant delays and get displaced the airline might decide operationally to cancel an over and back from their base to somewhere to get everyone in position for later flights. That might work in your favour. Equally they might keep chasing the schedule and run your flight 2 hours late.

if you look up your flight on flightradar24.com you’ll be able to see the plane that’s planned for use, click on this to see where it’s going today. It might be flying around Europe with little risk to its schedule from an Ireland storm, or it might be doing stansted to Dublin all day and going all over the shop as the day progresses.

Some airlines will start operationally cancelling flights if congestion builds. KLM and AL in my experience are good for cancelling early if they’re gonna. BA are good for having a standby crew, I’ve been surprised by on time flights with a late change in plane when the intended inbound craft is delayed. Ryanair ….. well they might cancel it when you’ve been sitting through a 1 hr delay already.