High-end department store chain Nordstrom Inc has reported a surge in third quarter earnings to $45.5 million, up from $18.4m in the same period last year.

The Seattle-based retailer, which attributed the growth to a mixture of strong sales and lower merchandise markdowns, also saw net sales rise 9.8 per cent year-on-year for the quarter to $1.42 billion.

Same-store sales, meanwhile, were up five per cent for the quarter compared to last year.

Nordstrom Inc operates 148 fashion specialty stores throughout the United States, with four new outlets opened in the third quarter.