Mexico on October 11|alt=Tropical Storm Sergio approaching the
Baja California Peninsula on October 11 The
Government of Mexico issued a
tropical storm watch on October 10 along the western coast of the
Baja California Peninsula from
Punta Eugenia to
Cabo San Lázaro and along the eastern coast from to
San Evaristo. As Sergio rapidly approached the peninsula on the next day, the tropical storm watch on the west coast was upgraded to a tropical storm warning, while the watches on the east coast were upgraded to warnings later in the day. All watches and warnings were discontinued as Sergio moved inland.
Plan DN-III-E and the Marine Plan were activated in advance for Baja California Sur, allowing the
Mexican Army to help with disaster relief efforts and rescue operations. A blue alert, meaning minimal danger, was issued for
Sinaloa and emergency shelters were opened due to rainfall and Sergio's proximity. Sergio made landfall in western Baja California Sur and later in Sonora, In Baja California Sur, Sergio's impact was mainly minimal, with homes experiencing power outages Multiple roads and schools in
Loreto were damaged. Damage across the Baja California Sur amounted to
MX$13.3million (US$691,000). In Sonora, almost 400 people had to evacuate to a temporary shelter as a result of flooding. as well as several power outages.
Hermosillo experienced street flooding which impeded traffic and overflowed sewers in several areas; multiple power outages also occurred. A concert scheduled to take place in the city was canceled in the interest of public safety. In Punta de Aqua II, over of rain was reported.
Mazatán and
Plutarco Elías Calles reported rainfall totals of and , respectively. More than 1,000 schools were closed in
Chihuahua and classes in 72 municipalities of Sinaloa were suspended. In the Chihuahuan municipality of
Nuevo Casas Grandes, heavy rainfall flooded streets and houses. Throughout the state of
Michoacán, the combined effects from Sergio and nearby
Hurricane Rosa destroyed of crops.
United States High waves from Sergio affected
Hawaii and its remnants moved into
Arizona,
California and
Texas, generating heavy rains and spawning multiple tornadoes. Sergio produced waves and rip currents along the shores of Hawaii's
Big Island,
Maui,
Molokai, and
Oahu on October 10. As a result, high surf advisories were issued for east-facing shores. These swells gradually relaxed over the next couple of days. No injuries or damage was reported in Hawaii. Damage on the fairgrounds and to the surrounding roads was estimated at US$50,000. A portion of
Old U.S. Route 80 was closed between
Gila Bend and
Buckeye after rainfall exceeding per hour caused flooding in the area. Moderate to heavy rainfall in the deserts southeast of Phoenix caused flash flooding, halting traffic on
State Route 187 between state routes
87 and
387. Runoff from heavy rainfall in the
Maricopa Mountains flowed across
State Route 238, resulting in multiple closures from
Mobile to Bosque and US$2,000 in damage. Numerous other road closures occurred throughout the
Phoenix Metropolitan Area as a result of flash floods, damage in the region totaling approximately US$73,000. Moisture from Sergio's remnants also entered Southern California, producing thunderstorms mainly to the south of
Point Conception. Widespread storms caused
flash floods throughout the
Coachella Valley, with a 12-hour rainfall total of observed at
Palm Desert. In nearby
Indio, hail up to in diameter was reported. Floodwaters up to deep were reported on a segment of
Interstate 10 near Cactus City. Multiple flood-related road closures also occurred near
Rimlon and
Thousand Palms. Total damage in California is estimated at $100,000. The remnants of Sergio moved through Texas from October 12–13, producing severe thunderstorms that caused US$475,000 in damage throughout the state. About US$15,000 in damage was reported after wind gusts damaged a storage unit between
Eureka and
Mildred. Wind gusts of caused about US$4,000 in damage to power lines and a carport near
Greenwood. Outside of
Shiloh, wind gusts destroyed a metal barn and either damaged or destroyed multiple trees, resulting in US$5,000 in damage. Wind gusts between were reported in numerous other counties. There were also reports of hail in several counties. Just outside
Baxter, hail in diameter fell on several properties, causing US$5,000 in damage. Flash flooding affected the state, resulting in multiple road closures. In
Wink, the intersection of
State Highway 115 and Wildcat Drive was closed due to flooding. Outside of
Midland,
State Highway 158 experienced flooding near
Interstate 20. At least ten tornadoes spawned in Texas as a result of the increased moisture. An EF2 tornado near
Knickerbocker extensively damaged a metal building and either uprooted or snapped many trees, causing US$200,000 in damage. In
Brady, an EF0 tornado uprooted one tree, which caused another to fall on a home, which triggered roof damage, resulting in US$150,000 in damage. Approximately US$25,000 in damage occurred near
Sardis when an EF0 tornado damaged a corner of a gymnasium, broke out windows on cars, bent down light-poles and handicap signs in a parking lot, and threw a trailer into a nearby field. Two tornadoes occurred near
Chat. The first was an EF0 tornado that damaged a few trees as well as shingles and fences at multiple homes, generating US$15,000 in damage. The second was an EF1 tornado that substantially damaged one home, damaged the roof and deck of another, destroyed a shed, and tossed a boat and RV trailer, resulting in about US$50,000 in damage. An EF0 tornado near
Brandon caused about US$5,000 in tree damage. At least four more EF0 tornadoes occurred: two in
Navarro County, one in
Freestone County, and one in Panola County. ==See also==