Met Éireann has renewed a Status Yellow fog warning for 12 counties, with poor visibility and difficult travel expected overnight and during Monday morning’s commute. The warning is in effect from 9pm on Sunday until 11am on Monday, covering parts of Connacht, northern Leinster and Ulster.
Met Éireann fog warning: counties affected
The latest warning applies to:
- Donegal
- Cavan
- Monaghan
- Louth
- Meath
- Westmeath
- Longford
- Galway
- Leitrim
- Mayo
- Roscommon
- Sligo
Met Éireann says fog will reduce visibility locally and may create hazardous conditions for motorists, cyclists and pedestrians. The warning is particularly relevant to people travelling early on Monday, when roads may remain affected even after the alert has ended in some locations.
What the yellow fog warning means for travel
A Status Yellow warning indicates that weather conditions are not considered especially unusual, but that localised danger may occur. Fog can develop unevenly, meaning conditions may change quickly over short distances.
Drivers heading out during the warning period should allow extra time and adjust their speed to the conditions. Visibility can be worse on rural roads, at junctions and near waterways, while headlights and road markings may be harder to see.
Travel advice includes:
- Reducing speed and leaving a larger gap between vehicles
- Using dipped headlights where visibility is poor
- Checking conditions before setting out
- Taking extra care at junctions, crossings and roundabouts
- Allowing for possible delays on public transport and regional roads
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How widespread is the warning?
The renewed alert follows a broader fog warning issued the previous night across 25 counties. That earlier warning covered the entire State except Donegal. The latest alert is more geographically limited, but it still includes several major travel corridors and counties across the north and west.
No corresponding warning has been issued by the UK Met Office, according to the information available with the alert. Conditions in Northern Ireland may therefore differ from those across the border, although anyone travelling between jurisdictions should check local forecasts before departure.
Ireland weather forecast for the week ahead
Sunday was expected to remain largely dry after early patches of fog and mist lifted. Rain was forecast to move into parts of the southwest on Sunday night, particularly outside the areas covered by the fog warning.
The wider forecast points to a milder and wetter start to the week. Rain and drizzle are expected to spread from the south on Monday night, with potentially heavier rain during Tuesday and Wednesday.
Conditions are then expected to become cooler and brighter towards the end of the week. As forecast details can change, commuters and households should consult the latest Met Éireann updates before making travel plans.
Monday morning commute: what readers should know
The timing of the warning means the most significant impacts could occur during the start of the working week. People travelling through affected counties may encounter dense fog in one area and much clearer conditions a short distance away.
Those relying on buses, trains or longer-distance services should allow additional time in case road conditions affect routes. Airport passengers and anyone travelling to appointments should also check directly with their operator, as weather-related delays depend on local conditions and operational decisions.
What happens next?
Met Éireann will continue to monitor visibility and may update, extend or withdraw the warning as conditions develop. The current alert is scheduled to remain in place until 11am on Monday.
The later shift towards rain means that visibility problems may give way to wet roads and reduced braking conditions. Drivers should therefore remain alert even after the fog warning has expired, particularly during periods of heavier rain.
Frequently asked questions
When is the fog warning in effect?
The Status Yellow warning runs from 9pm on Sunday until 11am on Monday.
Which areas are covered?
The warning covers Donegal, Cavan, Monaghan, Louth, Meath, Westmeath, Longford, Galway, Leitrim, Mayo, Roscommon and Sligo.
What are the main risks?
The principal risks are poor visibility and difficult travel conditions, especially during the Monday morning commute.
Will the weather remain foggy all week?
The forecast suggests fog will be followed by milder, wetter weather, including rain and drizzle from Monday night and potentially heavier rain on Tuesday and Wednesday.
Key takeaway
This Breaking News Ireland update means commuters in 12 counties should prepare for reduced visibility overnight and on Monday morning. Check the latest Met Éireann forecast, leave extra time and drive according to conditions before setting out.