The scores aimed to predict a property’s risk from a fires, floods and storms, but some in the real estate industry as well as homeowners have called them inaccurate.
Other services, notably Redfin, still use the First Street scores. IMHO, they’re decent at a community level, but the property-to-property differences in the First Street scores are not particularly accurate

I bought my house with Redfin while I worked for Zillow. Definitely better and not even close.