51.   A massive sandstorm enveloped Cairo and other parts of Egypt on Friday, reducing visibility to zero in many places.

52.   A massive sandstorm that turned the sky from gray to red to eerie white enveloped much of Egypt on Friday, reducing visibility to zero in many places.

53.   Also, half the runway lights were not working at the time of the disaster, further reducing visibility.

54.   Antara said the new fires sent smoke billowing into the sky, reducing visibility around the area and the road linking Samarinda and the neighboring town of Balikpapan.

55.   Clouds of dust often reduce visibility to zero.

56.   Clouds reduced visibility at the time, it said.

57.   Cold temperatures kept the trail in good shape and there were no storms to slow the teams by reducing visibility.

58.   DASHT-E-QALEH, Afghanistan - Dust clouds reduce visibility to zero.

59.   Dense fog will form at night in the interior of Puerto Rico reducing visibilities to near zero in the predawn hours.

60.   Dense fog threatened to reduce visibility to a quarter-mile in California, Oregon, Washington, Idaho, Montana, Utah and Wyoming.