What is an Inflow Jet?
An inflow jet is a strong, low-level current of air that flows into a developing thunderstorm or tornado. It carries warm, humid air from the surrounding environment into the storm, providing the necessary fuel for storm intensification. Inflow jets are often seen in the strongest supercell thunderstorms and are a key factor in tornado formation.
As a storm strengthens, the inflow jet becomes more pronounced, drawing in more air and increasing wind speeds near the storm base. This inflow can be so strong that it pulls debris and objects off the ground before a tornado even touches down.
Storm chasers and meteorologists monitor inflow jets closely, as they indicate the potential for a tornado to develop. When the inflow jet is strong and sustained, it often signals an intensifying storm with an increasing risk of tornado formation.
For homeowners and businesses in tornado-prone areas, understanding inflow jets can help in assessing severe weather threats. Proper storm shelter planning, including underground tornado shelters or above-ground safe rooms, is crucial for protection when conditions indicate strong inflow jets.