
Rare summer storm could batter Ireland as expert warns of 'worst case scenario'
Weather models are suggesting the possibility of very strong winds sweeping across the country, but there is still some hope for calmer conditions to follow.
Both the Global Forecast System (GFS) and the European Centre for Medium-Range Weather Forecasts (ECMWF) have flagged the potential development of a low-pressure system early next week that could bring stormy conditions to Irish shores. Ireland may be in for an unwelcome blast of extreme weather next week, as a rare summer storm looms on the horizon. Pic: Niall Carson/PA
Irish weather expert Alan O'Reilly, who runs the widely-followed @CarlowWeather account on X, has been monitoring the charts closely and highlighted next Tuesday as the most likely day for disruption.
'When it comes on Tuesday – look at this – very, very strong winds right across the country. Now, it's a week out. It's very uncertain. It's going to chop and change but the GFS and the ECMWF are both showing the risk of a low pressure storm moving towards us on Monday or Tuesday, hopefully Tuesday,' he said on social media.
While he urged people not to panic, he advised keeping an eye on developments. 'I wouldn't get too worried at the moment but it's certainly something to keep an eye on.'
Monday evening update and an early look ahead at the long weekend including latest weather models showing risk of storm early next week. pic.twitter.com/fa8uJMSn2Z — Carlow Weather (@CarlowWeather) July 28, 2025
There's also a silver lining. O'Reilly suggested that even if strong winds do materialise, better weather may follow shortly after: 'The good news is that once that clears, high pressure looks more likely to move in for next week so it might be a short-term loss in terms of some wind and rain but then high pressure moving in so fingers crossed that we get that high pressure and the low pressure stays to the north.'
For now, conditions will remain mixed in the lead-up to the weekend.
According to Met Éireann, a good deal of dry weather is expected over the coming days, with temperatures remaining in the high teens.
However, that's set to change by Saturday, August 2, when a band of rain moves in across the country, turning heavy at times.
Sunday is expected to bring scattered showers, with temperatures holding steady in the mid to high teens.
Providing some cautious optimism, O'Reilly added that the most severe projection from the ECMWF might not come to pass.
Good news is the weather model ensembles show that the ECMWF model with storm next Tuesday is currently worst case scenario so hopefully won't end up that bad🤞 pic.twitter.com/pSpVYBANjk — Carlow Weather (@CarlowWeather) July 28, 2025
'Good news is the weather model ensembles show that the ECMWF model with storm next Tuesday is currently worst case scenario so hopefully won't end up that bad.'

Try Our AI Features
Explore what Daily8 AI can do for you:
Comments
No comments yet...
Related Articles


Irish Daily Mirror
6 hours ago
- Irish Daily Mirror
Met Eireann issues a range of Storm Floris weather warnings across the country
Met Eireann has delivered a wide range of weather warnings ahead of the arrival of Storm Floris in the coming days. While the UK Met Office officially named Storm Floris yesterday, the Irish national forecaster waited until today to issue its weather warnings ahead of a wet and windy start to the week ahead. Status Yellow wind and rain warnings have been issued for several counties as the impacts of Storm Floris are felt across the country. A Status Yellow wind warning has been issued for Clare, Galway, Mayo and Sligo as very strong and blustery southwest winds will veer westerly and bring some damaging gusts. This wind warning is valid from 2am on Monday to 1pm on Monday. During this time, the possible impacts include dangerous travelling conditions, outdoor events being impacted, structural damage, fallen trees and debris, power outages and wave overtopping. A separate Status Yellow rain warning has been issued for Donegal, Galway, Leitrim, Mayo and Sligo. This comes into effect at 2am on Monday and will expire eight hours later. Met Eireann anticipates spells of heavy rain, with a chance of thunder. Local flooding and lightning damage are possible. Another Status Yellow wind warning will be in effect for Cavan, Donegal, Monaghan and Leitrim as a result of Storm Floris for a 12-hour period from 4am on Monday morning. "Storm Floris will bring a spell of wet and unseasonably windy weather, particularly for northwestern areas, through Sunday night and into Monday," a Met Eireann spokesperson said. "As this is a Public Holiday Weekend with a large number of outdoor events and with many people going camping, etc, and with an increased usage of temporary structures such as tents, more people will be at a greater risk of exposure than would normally be the case. And while we are in a period of neap tides, with lowest tidal ranges of this cycle expected on Sunday and Monday, strong onshore winds and high waves may cause wave overtopping in low-lying coastal areas in the northwest and west. "Our advice would be to pay attention to the weather forecasts and warnings issued over the weekend and take them into consideration with any plans you have. And as always, please heed the advice of local authorities." Subscribe to our newsletter for the latest news from the Irish Mirror direct to your inbox: Sign up here.


RTÉ News
10 hours ago
- RTÉ News
Storm Floris predicted to be exceptionally strong
A big storm, named Floris by the UK Met Office, is heading our way over the coming days. It is likely to bring unseasonably strong winds and heavy rain and cause considerable disruption, especially to the north west of the country and to Northern Ireland. The storm, which is predicted to be exceptionally strong, especially for this time of year, will arrive tomorrow night and be at its height by Monday morning. Met Éireann is warning that more people than usual are likely to be exposed and impacted due to a large number of outdoor events taking place, as well as people camping, holidaying and engaging in outdoor pursuits at this time of the year. There are fears too, that a storm of this magnitude could do huge damage to trees that are full of leaves at the height of the summer. And of course, damage to trees in Ireland inevitably means damage to electricity poles, power outages, and local disruption to the electricity supply network. Met Éireann is warning of dangerous driving conditions, fallen trees, debris and loose objects Met Éireann is highlighting other potential hazards too. It is warning of dangerous driving conditions, fallen trees, debris and loose objects, structural damage, wave overtopping, and localised flooding that will be made worse by leaves and debris. People will be at greater risk of exposure, says forecaster Forecaster Andrew Doran-Sherlock says as this is a Public Holiday Weekend more people will be at a greater risk of exposure than would normally be the case. He said: "While we are in a period of neap tides, with lowest tidal ranges of this cycle expected on Sunday and Monday, strong onshore winds and high waves may cause wave overtopping in low-lying coastal areas in the northwest and west." "Our advice would be to pay attention to the weather forecasts and warnings issued over the weekend and take them into consideration with any plans you have," he added. "And as always, please heed the advice of local authorities." Forecaster Andrew Doran-Sherlock urged people to heed the advice of local authorities There is still some uncertainty in the details so the full impact of the storm system cannot be determined. Nevertheless, on Friday, forecasters at the British Met Office were not ruling out the possibility that storm Floris could bring with it an unusual phenomenon that weather professionals refer to as "explosive cyclogenesis". In common (or tabloid) parlance that means Storm Floris could turn out to be a so-called "weather-bomb". This occurs when a storm brings a rapid drop in air pressure of 24 millibars, or more, in 24 hours. It is a rare phenomenon in an Irish context. But when it does happen wind speeds tend to become extremely intense. That is exactly what occurred during the devastating Storm Éowyn last January, the costliest storm in terms of damages to ever hit the country. Floris could qualify as a 'weather bomb' Meteorologists at the UK Met Office said yesterday that although it is difficult to be sure, it looks like air pressure will be about 1,005 hectopascals (or millibars) 24 hours before the storm, but will fall as low as 980 hectopascals and maybe even lower when it arrives. If that does happen then Floris would qualify as a "weather bomb" and the winds at the centre of the storm would be extremely strong. Of course, that does not mean this storm will be as damaging as Éowyn because the timing, the trajectory and the position of the coming storm when it is at its maximum will be different. Éowyn was a direct hit on the coast of Ireland while Floris is currently expected to track to the north west of the country, so its impact is unlikely to be as fierce. Storm Éowyn was a direct hit on the coast of Ireland (Photo:RollingNews) Nevertheless, it would be truly remarkable if two storms characterised by "explosive cyclogenesis" impacted Ireland in a period of less than seven months. The meteorologists at the UK Met Office are saying this cannot be ruled out so it is well worth watching out for. One can expect to hear a lot of discussion about the fingerprints of climate change if that does turn out to be the case. As things stand right now the UK Met Office is predicting potentially record gusts for this time of the year, of up to 100 kilometres per hour or more in the Northwest of Ireland, and Northern Ireland, early on Monday. There is no question that will come as a shock to many holiday makers. It's a big nuisance for farmers and crop growers too. Five years ago this month, when Storm Francis hit, some of Ireland's apple growers lost as much as 30% of their crops due to wind damage. Rivers burst their banks, with people needing to be rescued from up to 300 homes in Newcastle Co Down. This month two years ago Storm Betty caused flooding, fallen trees, branches, and debris across the south of the country, with electricity outages affecting 70,000 homes, farms, and businesses. The stories were similar and the experiences equally challenging during, Antoni, Lillian, Ellen, and Evert - the four other August named storms during the eleven years since the convention of naming storms was adopted here. On that basis we can expect lots of reminders, and very good advice about taking care, avoiding hazards, and driving carefully over the coming days. The good news on the weather front is that the UK meteorologists are expecting that after the storm weather will settle down quickly and we should be back to calm and warm conditions by Wednesday with high pressure ruling the roost.


Irish Daily Mirror
a day ago
- Irish Daily Mirror
Met Eireann issues weather warning update as Storm Floris officially named
Met Eireann has delivered an update to the Irish public after Storm Floris was named by the UK's Met Office earlier today. While Met Eireann has yet to issue a weather warning, Ireland's national forecaster has acknowledged the potential storm risks by issuing an advisory, and suggested that official warnings should be expected from Saturday. This comes as a spell of wet and unseasonably windy weather is anticipated from Sunday evening. The downturn in conditions could result in a greater number of people being impacted as a result of a large number of outdoor events over the August Bank Holiday weekend, including festivals. Some potential impacts of the stormy weather include dangerous travelling conditions, fallen trees, debris, structural damage, knock-on impacts for outdoor events, power outages, wave overtopping and localised flooding. The deepening low pressure system will likely track to the northwest of Ireland and bring with it a spell of heavy rain and very strong winds. Forecaster Andrew Doran-Sherlock said: "Storm Floris will bring a spell of wet and unseasonably windy weather, particularly for northwestern areas, through Sunday night and into Monday. However, there is still some uncertainty in the details so the full impacts of the system cannot yet be determined. By Saturday though, the event will be within the range of our high-resolution DINI forecasting model and warnings will be issued. "However, as this is a Public Holiday Weekend with a large number of outdoor events and with many people going camping, etc, and with an increased usage of temporary structures such as tents, more people will be at a greater risk of exposure than would normally be the case. And while we are in a period of neap tides, with lowest tidal ranges of this cycle expected on Sunday and Monday, strong onshore winds and high waves may cause wave overtopping in low-lying coastal areas in the northwest and west. "Our advice would be to pay attention to the weather forecasts and warnings issued over the weekend and take them into consideration with any plans you have. And as always, please heed the advice of local authorities." Storm Floris is the sixth named storm of the 2024/25 season. Storm Éowyn, which took place in late January, was the last named storm to affect Ireland and caused significant damage to tens of thousands of people across the country. Subscribe to our newsletter for the latest news from the Irish Mirror direct to your inbox: Sign up here.