In the past on Weather Break we’ve talked about the fact that many meteorologists get into this business because they are just the type of people who care about weather and get pretty excited about storms. Sometimes it sounds pretty cold or uncaring when a forecaster talks about factors that are GOOD for storms, or when the meteorologist sounds DISAPPOINTED when the storms are weaker than expected or when they start to dissipate. But keep in mind that it is this enthusiasm for the weather that GOT those folks into the business of meteorology in the first place. Clearly, the meteorologist is NOT in any way happy when property is destroyed or when people get hurt, but it isn’t necessarily a bad thing for the meteorologist to hope to get to see a particularly interesting thunderstorm or an unusually dramatic tornado. So when a forecaster is looking at a severe weather situation, he or she is often talking about the factors that will make the storms stronger or last longer as if they are a GOOD thing. One factor in the thunderstorm environment, however, that is a always a BAD thing — if you are cheering for the storm — is what meteorologists call “entrainment”. On today’s episode of Weather Break, Dr. Jon Schrage of the Creighton University Department of Atmospheric Sciences talks about what entrainment is and how it weakens thunderstorms.