ZAATARI, Jordan – A winter storm is magnifying the misery for tens of thousands of Syrians fleeing the country's civil war, turning a refugee camp into a muddy swamp where howling winds tore down tents and exposed the displaced residents to freezing temperatures.

Some frustrated refugees at a camp in Zaatari, where about 50,000 are sheltered, attacked aid workers with sticks and stones after the tents collapsed in 35 mph winds, said Ghazi Sarhan, spokesman for the Jordanian charity that helps run the camp. Police said seven Jordanian workers were injured.

After three days of rain, muddy water engulfed tents housing refugees including pregnant women and infants. Those who didn't move out used buckets to bail out the water; others built walls of mud to try to stay dry.