More than three hundred young people from schools in Cardiff, Caerphilly and Carmarthenshire are trying to stay safe while trapped in hotels in New York.
Pupils from Ysgol Bro-Myrddin in Croes-y-Ceiliog, Carmarthenshire, are among 200 unable to leave their hotel as winds of up to 80 miles per hour lash the East Coast.
Worried parents and relatives have spent the day trying to get in touch with them but power cuts and problems with communications have swept across the city.
Rhys Thomas, a teacher at Ysgol Gyfun Cwm Rhymni who's in New York, told ITV Wales that himself and his pupils were safe from the storm.
Britons trying to get home from the US were left stranded for another day after UK airlines were forced to cancel more flights on Tuesday. Virgin had to cancel all its New York and Newark flights on Tuesday and also announced that one flight from New York and one from Newark that would have arrived at Heathrow on Wednesday morning had been cancelled.
BA had to cancel all flights to and from New York, Newark, Baltimore and Philadelphia on Tuesday but was able to operate a normal three-flight service to and from Boston and was also able to have one flight to Washington.
American carriers also had to axe some US services to and from the UK. These included American Airlines, Delta and US Airways.
Around 30 members of a wedding party from Wales are also stranded in New York. They had flown out to America to celebrate the couple's big day but many have since been unable to fly home as flights out of New York have been cancelled.
Phillip Stocker's daughter, Charlotte from Abertillery, is with the wedding party.
The Foreign and Commonwealth Office have issued the following advice to British nationals currently in New York or on the Easy coast of America.
If you or a friend or family member are in New York City please contact the ITV Wales News desk via email or telephone:
- Telephone - 0844 88 10213
- Email - firstname.lastname@example.org
For more information on Hurricane Sandy visit the ITV News website.