 On August 23 , 1963 , Hurricane Beulah was the site of the next seeding attempt . It had an indistinct eyewall . In addition , mistakes were made , as the seedings of silver iodide were dropped in the wrong places . As a consequence , nothing happened . The next day , another attempt was made , and the <unk> hit their targets . The eyewall was observed to fall apart and be replaced by another eyewall with a larger radius . The sustained winds also fell by twenty percent . All in all , the results of the experiments on Beulah were " encouraging but inconclusive . " 
