Mexico On September 12, the government of Mexico issued a tropical storm watch from
Lázaro Cárdenas, Michoacán to
Punta San Telmo, Michoacán. Classes for all grades in coastal regions of Guerrero and Michoacán were cancelled in anticipation of Mario. A green emergency alert, signifying a low level of danger, was issued for
Jalisco. A blue emergency alert, signifying a minimal level of danger, was issued for
Guerrero and
Oaxaca. An
Independence Day dance event in
Mulegé was cancelled. While Mario made its closest approach to the southwestern coast of Mexico, more than of rain fell in a 24-hour period across portions of Guerrero and
Colima. A peak wind gust of was reported at
Acapulco International Airport. In Guerrero, heavy rains caused flooding and landslides while strong winds downed trees and utility poles, resulting in minor electrical and communication outages. In
San Ignacio, at least six neighborhoods and 62 homes were inundated by floodwaters, leaving around 250 families homeless. Two shelters were opened for 20 residents whose homes suffered severe flood damage. Floodwaters washed out two sections of the Transpeninsular Highway in San Ignacio, trapping a
tank truck and leaving the community isolated for three days. Power outages affected operations at ten schools across Mulegé. Flooding caused sewage to flood onto streets across
Los Cabos. In San Ignacio, a 37-year-old man was killed by lightning.
United States In anticipation of the remnants of Mario, portions of the
Southwestern United States were placed under a slight risk of excessive rainfall. Flash flood watches and warnings were issued throughout
Central and
Southern California. Additionally, the
National Interagency Fire Center placed portions of California under a moderate fire risk, warning that dry lightning could spark fires. Heavy rainfall that triggered flash flooding and
mudslides was reported as the remnants of Mario passed through California.
Running Springs recorded a rainfall total of while
Ridgecrest recorded a rainfall total of .
Imperial Irrigation District reported the storm downed more than 100 utility poles, leaving nearly 7,000 customers without power. In
San Bernardino County, fourteen homes were damaged and an additional three homes were destroyed by mudslides. In the
San Bernardino Mountains,
debris flows trapped at least six vehicles, resulting in the rescue of ten people. In
Cabazon, two people were injured in a seven-vehicle
collision as a result of hazardous driving conditions caused by inclement weather. Flooding left several roadways impassable at
Death Valley National Park. In the
San Bernardino National Forest, several sections of
California State Route 38 were washed out by floodwaters, leading
Caltrans to launch a US$9.7 million project to restore damaged sections of the road. Additionally, sections of
California State Route 178 and
California State Route 62 were damaged by floodwaters. Officials estimated the cost to repair roads damaged by the storm at US$40.7 million. In
Barstow, a toddler was killed and his father was injured after their vehicle was swept away by floodwaters. The remnants of Mario also generated severe thunderstorms across portions of
Nevada and
Arizona. In
Gila County, heavy rainfall caused flash flooding along roadways, resulting in the rescue of five children. == See also ==