What are the features chasers focus on when forecasting supercells and tornadoes later the same day?
Anything which can provide enough lift in an environment of favorable instability, moisture and wind shear is fair game. The most common target is the dryline, a boundary between dry and moist air. Warm fronts, outflow boundaries and cold fronts also may provide enough lift for severe thunderstorms, if all other factors are favorable. When the cap is strong, chasers often target intersections of boundaries (say, an outflow/dryline or warm front/dryline intersection), where there is often a local maximum in both lift and shear.
