Piper Alpha was an oil production platform in the North Sea approximately north-east of Aberdeen , Scotland , that was operated Being_in_operation by Occidental Petroleum ( Caledonia ) Limited .

Weakening Cause_change_of_strength as it turned Motion to the northeast , the hurricane Catastrophe made landfall near San Blas , Nayarit as a Category 4 hurricane Catastrophe , with sustained winds of 140 mph ( 220 km/h ) , before dissipating Dispersal on October 26 over the Sierra Madre Occidental mountains .

Outside of Ormoc City , 159 people were killed Killing across Leyte and Negros Occidental .

After causing Causation heavy rains and killing Killing four individuals in Sonora , the storm dissipated Dispersal over the Sierra Madre Occidental and its remnants went on to cause Causation flooding in New Mexico and Texas .