1.   Fog prevented some helicopters from taking off.

2.   Snow and deadly winds prevented emergency helicopters from flying into the ski village of Galtuer, near the Swiss border.

3.   The weather might prevent helicopters from going up to shoot live.

4.   Thick smoke prevented rescue helicopters from flying to the crash site, the witnesses said.

5.   Wet snow and rain prevented the helicopters from flying out of here Sunday morning, and the planes have not seen any more survivors.

6.   A threatened new offensive by Chechen opposition forces seeking to overthrow President Dzhokhar Dudayev failed to materialize Sunday, with bad weather preventing helicopters from flying.

7.   Arafat was forced to drive through the city because bad weather prevented his helicopter from taking off after he attended Midnight Mass in Bethlehem, Israel Army radio reported.

8.   Bad weather prevented military helicopters from taking the officials to the area and from conducting rescue operations.

9.   Continued snowfalls and fog were preventing helicopters from assessing the situation Monday.

10.   Dense foliage and bad weather prevented rescue helicopters from landing or lowering anyone on to the site.