RustySpork
Oscar Mayer Memer
And this is where probability and other things kick in.. and why you can rely on things like Lightning Detection at a distance as indicators... not stress about needing to predict the very first lightning bolt of a storm. And why meteorologists can forecast the kind of storms that will generate lightning and make decisions based on that.
Weather moves and forms - it doesn't just magically appear out of no where.
Even your local neighborhood pool can use and rely on a local lightning detector unit to accurately know when activity is within the action distance. And places like WDW would have actual staff with more extensive data and monitoring to drive their operations choices. All this talk about 'looking up at the sky' is comical...
Not sure I've mentioned looking up at the sky at all. It's all still predictive until a storm forms. Your statement indicates that lightning already exists in the area. That's not always true, as a storm has to have a point of origin somewhere. The analysis of weather as it moves and forms is still predictive. Storms that may be predicted to produce lightning don't always produce lightning. Conversely, storms that may not be predicted to produce lightning sometimes do.