That’s some crazy high QPF. From the NWS forecast discussion, looks like a stalled front is draped over the region allowing multiple lows to ride up along it. Hopefully y’all still have a good time despite the weather and there are some better days later this week.
https://forecast.weather.gov/product.php?site=MHX&issuedby=MHX&product=AFD&format=CI&version=1&glossary=1&highlight=off
At least you’re on vacation! Could be worse I guess