ISO Personal Lines Earthquake Rates

[MathIsHard]

Does anyone know how frequently ISO looks at their Earthquake rates? I was looking at one state in particular that hasn't changed in 10 years. So I was wondering if they complete an analysis every X years and only adopt it if it is a material change or if they just haven't looked at them in 10 years?

Thanks for your help

[CSMajor]

Wild guess here, but if your state isn't Cali or a New Madrid/other major faultline bordering state, X is probably high. Can't find anything to back that guess up online though.

[Maine-iac]

Looks like the last major revision was 2006/2007, and prior to that 1997.

I don't think there is any fixed schedule for it, but every 10 years or so seems about right. It's based on a cat model, rather than a strictly insured loss experience update.

But our company writes in non-earthquake prone states. I don't know if they update the analysis more frequently for states in more active zones.