Weather.com, 8/19/13, Associated Press

BOISE, Idaho -- Fire managers expressed optimism Sunday in their battle against a wildfire that has scorched nearly 160 square miles and forced the evacuation of 2,300 homes near the central Idaho resort communities of Ketchum and Sun Valley.

Officials said the blaze had grown by only about 12 square miles because of cloud cover the day before and the arrival of additional crews and equipment. Many firefighters worked Sunday to create protective firebreaks, or gaps in vegetation.

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