NULLOn the basis of the experimental analysis presented, the following conclusions may be drawn about the effect of wind on positive corona on thin wires: 1. As the applied voltage is increased, the following modes of corona are noticed on thin wires; a) burst pulses b) glow c) sparkover. 2. For thin wires, there is a critical voltage (transition voltage) at which a dc component with high frequency ripples has been observed. 3. The transition voltage confirms the inception of glow. Such a glow was termed previously “ultracorona”. 4. The transition voltage depends not only on the wire radius but also on gap spacing. 5. For thin wires, wind decreases the transition voltage. 6. The average repetition rate of the ac component increases with the applied voltage and decreases with wind. 7. The profile of the current distribution at the ground plane changes its shape with wind. Its peak increases in value and shifts in position downstream with wind. The wind effect on current distribution profiles increases as the applied voltage decreases