![]() This electric current is known as the return stroke. When the stepped leader and the positive charge meet, a strong electric current carries positive charge up into the cloud. The positive charges at the ground are attracted to the stepped leader, so positive charge flows upward from the ground. Once the negative charge at the bottom of the cloud gets large enough, a flow of negative charge called a stepped leader rushes toward the Earth. The top of the cloud becomes positively charged while the base of the cloud becomes negatively charged.īecause opposites attract, the negative charge at the bottom of the storm cloud wants to link up with the ground’s positive charge. This separates the positive (+) and negative (-) charges of the cloud. Small negatively charged particles called electrons are knocked off some ice and added to other ice as they crash past each other. The expansion creates a shock wave that turns into a booming sound wave.Īs ice crystals high within a thunderstorm cloud flow up and down in the turbulent air, they crash into each other. This extreme heating causes the air to expand explosively fast. A single stroke of lightning can heat the air around it to 54,000☏. Once again thanks for your thoughts and prayers and for Slim filling in during my absence.Īs children we may have been told that the gods were bowling in the heavens which cause all the racket in the skies during a storm. ![]() I will muddle through, though I still feel I am floundering about on the crap wagon. Though a bit late I am continuing on with my posts on storms – we covered tornadoes last week.
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