Walton has devised his own criteria for named heatwaves in the US, based on duration and extremity, on a one to five scale similar to hurricanes. Heatwave Chevron is classed as a four and is “historic”, Walton said. The meteorologist said he has a list of 20 oil and gas companies – including Exxon and Shell – for upcoming heatwaves and will turn to coal companies if he runs out of names.
And instead of going alphabetical like hurricane, go by previous years profits.
First heatwave gets named for the most profitable company last year.