In Hurricane Patricia's wake, torrential rains move into Louisiana

Hurricane Patricia Remnants Add to Massive Flooding in Texas


Torrential rainstorms battered Louisiana on Sunday, leaving thousands without power, after pounding southeastern Texas as the remnants of Hurricane Patricia converged with a second storm.

The heaviest band of rain moved over the Gulf of Mexico, triggering coastal flood warnings and flash flood watches in southwest Louisiana and soaking New Orleans, according to the National Weather Service (NWS).

SEE ALSO: Flooding fears ease as relentless Texas storms move out

More than 20,000 were without power in the greater New Orleans area.

Rainfall has totaled as much as 7 inches (18 cm) since late Saturday night, and forecasters predicted another 5 inches (13 cm) could fall. The NWS said waterspouts over lakes and tornados over land were both possible into the early morning hours.

"Most of the heavier rain to the west of New Orleans will taper off in the evening ... and for far eastern Louisiana it will probably end closer to midnight," said NWS forecaster Gavin Phillips.

The NWS issued a tornado watch for southeastern Louisiana and coastal Mississippi into early Monday, and warned that severe thunderstorms could develop in the region.

See photos of the aftermath of Hurricane Patricia in Mexico:

19 PHOTOS
Hurricane Patricia damage and aftermath
See Gallery
In Hurricane Patricia's wake, torrential rains move into Louisiana
View of a street in Barra de Navidad, Jalisco state, partially destroyed after Hurricane Patricia hit the shore on October 24, 2015. Record-breaking Hurricane Patricia weakened to a tropical storm over north-central Mexico on Saturday, dumping heavy rain that triggered flooding and landslides but so far causing less damage than feared. AFP PHOTO/OMAR TORRES (Photo credit should read OMAR TORRES/AFP/Getty Images)
Aerial view of of Manzanillo beach in Colima State, Mexico on October 24, 2015 after the passage of hurricane Patricia. Patricia flattened dozens of homes on Mexico's Pacific coast, but authorities said Saturday the record-breaking hurricane largely spared the country as it weakened to a tropical depression. AFP PHOTO/MARIO VAZQUEZ (Photo credit should read MARIO VAZQUEZ/AFP/Getty Images)
Residents of the Chamela community return to their homes after the passage of hurricane Patricia in the southern coast of the state of Jalisco, Mexico on October 24, 2015. Patricia flattened dozens of homes on Mexico's Pacific coast, but authorities said Saturday the record-breaking hurricane largely spared the country as it weakened to a tropical depression. AFP PHOTO/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
View of a damaged restaurant in Barra de Navidad, Jalisco state, after Hurricane Patricia hit the shore on October 24, 2015. Record-breaking Hurricane Patricia weakened to a tropical storm over north-central Mexico on Saturday, dumping heavy rain that triggered flooding and landslides but so far causing less damage than feared. AFP PHOTO/OMAR TORRES (Photo credit should read OMAR TORRES/AFP/Getty Images)
MELAQUE, MEXICO - OCTOBER 24: A worker cleans out the 'Monterey' Hotel after damage from Hurricane Patricia October 24, 2015 in Melaque, Jalisco, Mexico. Hurricane Patricia struck Mexico's West coast as the most powerful storm ever recorded in the Western Hemisphere but rapidly lost energy as it moved inland. (Photo by Brett Gundlock/Getty Images)
A wrecked house in the Chamela community after the passage of hurricane Patricia in southern Jalisco, Mexico on October 24, 2015. Patricia flattened dozens of homes on Mexico's Pacific coast, but authorities said Saturday the record-breaking hurricane largely spared the country as it weakened to a tropical depression. AFP PHOTO/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
Mexican soldiers patrol looking for people who ask for help after the passage of hurricane Patricia in El Rebalse community, Mexico on October 24, 2015. Patricia flattened dozens of homes on Mexico's Pacific coast, but authorities said Saturday the record-breaking hurricane largely spared the country as it weakened to a tropical depression. AFP PHOTO/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
A local resident in his wrecked house in the Chamela community after the passage of hurricane Patricia in southern Jalisco, Mexico on October 24, 2015. Patricia flattened dozens of homes on Mexico's Pacific coast, but authorities said Saturday the record-breaking hurricane largely spared the country as it weakened to a tropical depression. AFP PHOTO/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
MEXICO - 2015/10/25: A farmer harvests papaya fruit from the uprooted plants in Michoacan's coast. Hurricane Patricia hit the southwestern Mexico and Categorized as storm 5, bringing lashing rains, surging seas and cyclonic winds hours after it peaked, it is one of the strongest storms ever recorded. (Photo by Armando Solis/Pacific Press/LightRocket via Getty Images)
Aerial view of the Chamela community, Jalisco State, Mexico on October 24, 2015 after the passage of hurricane Patricia. Patricia flattened dozens of homes on Mexico's Pacific coast, but authorities said Saturday the record-breaking hurricane largely spared the country as it weakened to a tropical depression. AFP PHOTO/MARIO VAZQUEZ (Photo credit should read MARIO VAZQUEZ/AFP/Getty Images)
Aerial view of the Chamela community, Jalisco State, Mexico on October 24, 2015 after the passage of hurricane Patricia. Patricia flattened dozens of homes on Mexico's Pacific coast, but authorities said Saturday the record-breaking hurricane largely spared the country as it weakened to a tropical depression. AFP PHOTO/MARIO VAZQUEZ (Photo credit should read MARIO VAZQUEZ/AFP/Getty Images)
A wrecked house in the Chamela community after the passage of hurricane Patricia in southern Jalisco, Mexico on October 24, 2015. Patricia flattened dozens of homes on Mexico's Pacific coast, but authorities said Saturday the record-breaking hurricane largely spared the country as it weakened to a tropical depression. AFP PHOTO/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
CUASTECOMATES, MEXICO - OCTOBER 24: A truck sits covered in tree branches on October 24, 2015 in Cuastecomates, Mexico. The damage was caused by Hurricane Patricia, which struck Mexico's West coast yesterday afternoon and left minor flooding and damage. Cuastecomates is near Barra de Navidad, which was where the center of the hurricane hit. (Photo by Brett Gundlock/Getty Images)
Aerial view of the Manzanillo-Colima roadin Colima State, Mexico on October 24, 2015 after the passage of hurricane Patricia. Patricia flattened dozens of homes on Mexico's Pacific coast, but authorities said Saturday the record-breaking hurricane largely spared the country as it weakened to a tropical depression. AFP PHOTO/MARIO VAZQUEZ (Photo credit should read MARIO VAZQUEZ/AFP/Getty Images)
A restaurant partially destroyed by hurricane Patricia in Las Manzanillas, Jalisco state, Mexico on October 24, 2015. Patricia flattened dozens of homes on Mexico's Pacific coast, but authorities said Saturday the record-breaking hurricane largely spared the country as it weakened to a tropical depression. AFP PHOTO/OMAR TORRES (Photo credit should read OMAR TORRES/AFP/Getty Images)
A Mexican soldier stands guard in a banana plantation after the passage of hurricane Patricia in El Rebalse community, Mexico on October 24, 2015. Patricia flattened dozens of homes on Mexico's Pacific coast, but authorities said Saturday the record-breaking hurricane largely spared the country as it weakened to a tropical depression. AFP PHOTO/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
TECOMAN MX - OCTOBER 24: A truck drives through a flooded out turn off at the entrance to the city after heavy flooding from Hurriane Patricia October 24, 2015 in Tecoman, Colima, Mexico. Hurricane Patricia struck Mexico's West coast as the most powerful storm ever recorded in the Western Hemisphere but rapidly lost energy as it moved inland. (Photo by Brett Gundlock/Getty Images)
A man stares at the sea in a partially destroyed street in Barra de Navidad, Jalisco state, after Hurricane Patricia hit the shore on October 24, 2015. Record-breaking Hurricane Patricia weakened to a tropical storm over north-central Mexico on Saturday, dumping heavy rain that triggered flooding and landslides but so far causing less damage than feared. AFP PHOTO/OMAR TORRES (Photo credit should read OMAR TORRES/AFP/Getty Images)
HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE

A tornado touched down near the community of Larose, about 45 minutes south of New Orleans, though no serious damage was reported.

Tides along the southern coast of Louisiana were expected to be a few feet above normal at high tide due to sustained winds, likely flooding roads in lower-lying areas, Phillips said.

More than 9 inches (23 cm) of rain swelled rivers and flooded roads around Houston, but no injuries or deaths were reported as flash flood warnings ended.

Petroleum refineries along the U.S. Gulf Coast, which make up more than 40 percent of U.S. capacity, also appeared to be largely undamaged.

In the Eagle Ford and Permian Basin oil fields of south and west Texas, no major production cuts were reported. While the rains were heavy in Houston, they came after a month-long dry spell so flooding was relatively limited.

TEXAS WITHSTANDS PUMMELING

The storms over the past two days drenched a large swath from south of Dallas to the southeast coast, triggering flash flooding in Navarro County, about 50 miles (80 km) south of Dallas, on Saturday.

A Union Pacific freight train carrying cement derailed in Navarro County after a creek overflowed, washing out the tracks. Locomotives and rail cars were pushed on their sides, and a two-person crew was forced to swim to safety.

Repair teams cleared the derailed cars by Sunday morning, but they were not expected to be righted for several hours and the rail line was not due to reopen until Monday at the earliest, Union Pacific spokesman Jeff DeGraff said.

Navarro County was one of the hardest-hit areas. The tiny town of Powell got 20 inches (50 cm) of rain over 30 hours, said meteorologist Brett Rathbun of Accuweather.

Footage shows power of Hurricane Patricia:

Footage Shows Devastating Power of Hurricane Patricia

Navarro County Sheriff Elmer Tanner reported dozens of rescues from vehicles, homes and businesses since Friday.

In San Antonio, a woman reported her boyfriend was swept into a drainage ditch as he walked his dog early Saturday.

The force of the water washed him out of the underground ditch and he passed out, the San Antonio Fire Department said on Twitter. He later came to and called authorities.

The rain was strengthened by the remnants of Patricia, which was downgraded to a tropical depression after crashing into Mexico's west coast on Friday as a powerful hurricane.

More on AOL.com:
The Hubble Telescope discovers 250 tiny galaxies
New York man creates 'sovereign nation' in Utah
Canadian authorities: Whale vessel sinks; at least 3 dead

Read Full Story