My name is Jan Tetstone. I am 72 years old.
I was twenty  when the most devastating hurricane in thr history of
the United States ripped across the Gulf Coast in August, 1969,
destroying both life and property.
Hurricane, Debbie, was reported weakening on August 18 and 20, after it
was seeded by aircraft of the Environmental Science Service
Administration (ESSA). The changes occurred during Project Stormfury.
Project STORMFURY was an ambitious experimental program of research on
hurricane modification carried out between 1962 and 1983. The proposed
modification technique involved artificial stimulation of convection
outside the eyewall through seeding with silver iodide. The invigorated
convection, it was argued, would compete with the original eyewall, lead
to reformation of the eyewall at larger radius, and thus, through
partial conservation of angular momentum, produce a decrease in the
Modification was attempted in four hurricanes on eight different days.
On four of these days, the winds decreased by between 10 and 30%, The
lack of response on the other days was interpreted to be the result of
faulty execution of the seeding or of poorly selected subjects.
These promising results came into question in the mid-1980s because
observations in unmodified hurricanes indicated:
That cloud seeding had little prospect of success because hurricanes
contained too much natural ice and too little supercooled water.
That the positive results inferred from the seeding experiments in the
1960s stemmed from inability to discriminate between the expected
results of human intervention and the natural behavior of hurricanes.1
1 Willoughby, H. E., D. P. Jorgensen, R. A. Black, and S. L. Rosenthal,
1985: Project STORMFURY, A Scientific Chronicle, 1962-1983, Bull. Amer.
Meteor. Soc., 66, 505-514.