Hilary developed from a tropical wave that emerged over the eastern north atlantic ocean on 7 september. The well-defined wave moved westward with very limited convection for the next three Ò€¦ On august 20, 2023, tropical storm hilary made landfall in southern california, setting single-day precipitation records for the region.

Hilary brought historic rainfall totals and catastrophic flooding impacts to portions of the baja california peninsula and the southwestern united states. Hilary is responsible for 3 fatalities and over $900 Ò€¦ Tropical storm hilary made landfall across northern baja california on august 20, and moved through southern california that afternoon and evening.