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Unseasonal sandstorm hits Lebanon, Syria, causing breathing difficulties, reduced visibility

  • A sandstorm shrouds the capital city of Beirut, Lebanon, Tuesday, Sept. 8, 2015. The unseasonal sandstorm hit Lebanon and Syria, reducing visibility and sending dozens to hospitals with breathing difficulties because of the fine dust. (AP Photo/Hussein Malla)

    A sandstorm shrouds the capital city of Beirut, Lebanon, Tuesday, Sept. 8, 2015. The unseasonal sandstorm hit Lebanon and Syria, reducing visibility and sending dozens to hospitals with breathing difficulties because of the fine dust. (AP Photo/Hussein Malla)  (The Associated Press)

  • A Lebanese family walks on a popular beach as a sandstorm shrouds the coastal capital of Beirut, Lebanon, Tuesday, Sept. 8, 2015. The unseasonal sandstorm hit Lebanon and Syria, reducing visibility and sending dozens to hospitals with breathing difficulties because of the fine dust. (AP Photo/Hussein Malla)

    A Lebanese family walks on a popular beach as a sandstorm shrouds the coastal capital of Beirut, Lebanon, Tuesday, Sept. 8, 2015. The unseasonal sandstorm hit Lebanon and Syria, reducing visibility and sending dozens to hospitals with breathing difficulties because of the fine dust. (AP Photo/Hussein Malla)  (The Associated Press)

  • A Syrian worker  looks down from the rooftop of a high-rise tower under construction, as a sandstorm shrouds the coastal capital of Beirut, Lebanon, Tuesday, Sept. 8, 2015. The unseasonal sandstorm hit Lebanon and Syria, reducing visibility and sending dozens to hospitals with breathing difficulties because of the fine dust. (AP Photo/Hussein Malla)

    A Syrian worker looks down from the rooftop of a high-rise tower under construction, as a sandstorm shrouds the coastal capital of Beirut, Lebanon, Tuesday, Sept. 8, 2015. The unseasonal sandstorm hit Lebanon and Syria, reducing visibility and sending dozens to hospitals with breathing difficulties because of the fine dust. (AP Photo/Hussein Malla)  (The Associated Press)

An unseasonal sandstorm has hit Lebanon and Syria, reducing visibility and sending dozens to hospitals with breathing difficulties.

The storm hit the coastal capital of Beirut on Tuesday, a day after it engulfed the eastern Bekaa Valley and neighboring Syria further to the east.

Officials advised people to stay indoors. The Lebanese state news agency says at least 80 people fainted or suffered breathing problems because of the fine dust. People have been warned against burning trash that has piled up on Beirut streets this summer, sparking a political crisis and protests.

In Syria, the storm reached the capital, Damascus. The pro-government Syrian Al-Watan newspaper says it forced the government to halt its airstrikes against rebel fighters north of the central province of Hama.