Storm Chasers: Revenge of the Twister (1998) on Netflix

Plot summary

Jamie Marshall lost her husband when lightning struck the plane he was in and it crashed. A storm chaser by trade, she now throws herself into her work recklessly. Her boss sends her to Colorado to learn what caused a devastating tornado, and there she meets Will Stanton, the field coordinator for FEMA. The town has already been torn apart by the storm, and the two of them go through the wreckage together. One night a ball of lightning drops from the sky and touches the ground all around them. Will moves to shield Jamie, and the two kiss. The next day they head back to the site to carry on.