At 21:00 UTC on September 6, a hurricane watch was issued from Tuxpan to the Laguna Verde Nuclear Power Station, before being extended northward to Cabo Rojo at 03:00 UTC on the next day. The hurricane watch was upgraded to a hurricane warning at 09:00 UTC on September 7, while a tropical storm warning was issued from Cabo Rojo to Pánuco River and from Laguna Verde to the city of Veracruz. The warnings were downgraded and discontinued as Katia moved inland and dissipated, with all warning canceled by 12:00 UTC on September 9. Over 4,000 residents were evacuated from the states of Veracruz and Puebla. The Servicio Meteorológico Nacional warned residents and tourists not to visit Popocatépetl and Pico de Orizaba due to the possibility of lahars. The Protección Civil issued a red alert – the highest level – for northern and central Veracruz, as well as northern and eastern Puebla. An orange alert was declared for southern Tamaulipas and central and southern Puebla. The agency decreed a yellow alert for southern Veracruz, eastern Hidalgo, northern Oaxaca, and Tlaxcala. A green alert was posted for Mexico City, the State of Mexico, and eastern San Luis Potosí. Additionally, a blue alert – the lowest level – was issued for Morelos and Querétaro. Katia made landfall near Tecolutla in Veracruz as a minimal hurricane on September 9. The cyclone brought floods, mudslides, and strong winds to areas recently devastated by Mexico's most damaging earthquake in over 100 years. The highest 24-hour rainfall total in relation to the hurricane was in Canseco, Veracruz. Several roads were closed due to inundation, while early reports indicated that about 370 homes were flooded. Katia caused damage in at least 53 of Mexico's municipalities, though damage in each community was generally minimal. About of precipitation fell in Xalapa, equivalent to nearly two months of rainfall. Heavy rainfall resulted in 65 mudslides in 20 neighborhoods of the city and flooded 65 homes. Two fatalities were reported due to the mudslides. The storm toppled 22 trees and a number of branches in the city.