People walk past the main Sears store in downtown Vancouver, British Columbia, Feb. 23, 2011. Reuters

Sears Holdings Corp. estimated its quarterly sales came in below analysts’ expectations, citing unseasonably warm weather and intense competition, and said it would speed up closure of at least 50 unprofitable stores in the next few months.

The struggling retailer’s shares were down 8 percent at $15.42 in afternoon trading on Tuesday.

A warmer-than-expected winter in 2015 dented sales of cold-weather apparel and goods in the United States, forcing retailers such as Macy’s Inc. and Kohl’s Corp. to warn of disappointing sales for the period.

November and December are crucial for many retailers as the two months can account for anywhere between 20 and 40 percent of annual sales.

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Sears estimated sales of $7.3 billion for the three months ended Jan. 31, below the $7.43 billion analysts on average had expected, according to Thomson Reuters I/B/E/S.

Sears said it planned to cut costs by $550 million to $650 million in 2016, depending on overall volume of sales, adding that it targeted at least $300 million in asset sales during the first half of the year.

Sears said it was still exploring the sale of its auto center business, which it has been looking to sell since 2013.

The company also estimated a net loss of $525 million to $625 million in the fourth quarter.

Sears said it expected to write down the value of its brand by $150 million to $200 million as a result of store closures and falling revenue.

Once the largest retailer in the United States, Sears has lost its standing as customers preferred to either shop online or at rivals such as Target Corp. and Wal-Mart Stores Inc.

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The company is working to cut costs by creating a real estate investment trust, Seritage Growth Properties, shutting stores and cutting jobs.

The company reported a 7.1 percent drop in sales at established stores during the holiday quarter, hurt by weak demand for apparel — a business that has a “substantial impact” on overall profitability.

Sears said it expects to report fourth-quarter results around Feb. 25.