Not that much we can do from here, but fellow Edgeryder @elf_pavlik is in Mexico so let’s point him to some best practices for community based disaster response we developed over the years. (This started in 2015 from @natalia_skoczylas’ and my time in Nepal, our earthquake experience there being 8.1 and 7.3, respectively )
(1) Our “original research” paper, from the 2015 earthquake in Nepal:
(2) Applied to the 2015 floods in Tbilisi, Georgia:
(3) Applied to the 2017 monsoon floods in Nepal:
Elf, hope you are well and the material is somehow useful. Let us know is we can assist in a more specific way!