The roads remain dangerous after Storm Isha despite calming winds, transport consultant Conor Faughnan has warned.
A clean-up operation is underway across the country with electricity reconnections likely to take several days.
The worst-impacted counties include Mayo, Galway, Roscommon and Kerry.
Status Yellow wind warnings remain in place for Clare, Donegal, Galway, Leitrim, Mayo and Sligo until 7pm.
Mr Faughnan told The Pat Kenny Show everywhere was affected.
"It was a country-wide event, mostly the northern-half of the island and at its most severe in the north-west," he said.
This morning, I guess it's the usual clean-up that we've come to expect - a lot of houses without power and on the roads, I've seen reports of over 100 trees down … country-wide.
"Irish Rail is fully up and running but there have been delays and speed restrictions on some of the routes.
"The morning after an event like that it's the usual warning that we give; it looks as if conditions have hugely improved... but still lots of debris out there.
"Lots of dangerous bits of branches or just blown debris that you'll come across on secondary roads right through the day today.
"So, even though it looks as if the worst of it is over, as we all get back out and about there is danger out there on the roads - so care definitely needed."
Workers clear a fallen tree from Merville Road, Stillorgan in Dublin, 22-1-24. Image: @dlrcc/XMr Faughnan said debris is now a concern, especially on secondary roads.
"It did happen more or less anywhere - there was extensive trees reported down in counties like Clare and Galway," he said.
"By and large people have been prudent, I think we're getting used to storm warnings now and a lot of non-essential travel was cancelled.
"The danger may be passing now in terms of the live high winds, but it's the debris - particularly on secondary roads - which will take local authorities I would suggest most of the day to be fully clear.
"Even though you think it's all over [there's] still danger there on the secondary road network for sure".
Mr Faughnan said many trees that may have survived Storm Isha will be weakened going forward.
"It's been a succession of course, because really since November those trees have been enduring storm," he said.
"If it is weakened, it could still tip and topple," he added.
Mr Faughnan said people should check their insurance policies for storm coverage.
