Patricia to spread flood threat from Mississippi to the Florida Panhandle on Monday

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National Weather Forecast

By KRISTINA PYDYNOWSKI for AccuWeather

While Texas and Louisiana bore the brunt of the major flooding Friday into Sunday as moisture from once-Hurricane Patricia arrived, the flood danger will continue to shift eastward across the Deep South through Monday.

Heavy rain will continue to spread from Mississippi to Alabama and the Florida Panhandle through Monday, accompanied by the threat for flooding.

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In addition to the heavy rain, isolated tornadoes threaten to spin up at the coast. A woman sustained injuries on Sunday outside of New Orleans as a tornado damaged her mobile home.

The greatest concern for widespread and life-threatening flooding will exist from southeast Mississippi to the Florida Panhandle. Rainfall totals will generally be on the order of 3-6 inches with localized higher amounts.

Patricia flooding

Aside from along the coast of Alabama and the Florida Panhandle, flooding will be on a more localized level across the rest of the Deep South on Monday. However, it only takes one flooding incident to put lives and property in danger.

Areas that first experience flash flooding will be low water crossings, small streams, secondary roads and urban areas that drain poorly. Flooding will only worsen as the rain intensifies and persists over a given area.

Excessive rainfall will cause streams and small rivers to turn into raging waterways and overflow their banks, inundating neighboring roads and homes. The flood waters could lead to the closure of more major highways and interstates, while also affecting rail travel.

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The flooding could once again become severe enough in some communities to force evacuations and cause some roads and bridges to be washed away.

Check out hurricane incidents by state:

As was seen in Corsicana, Texas, Friday, flood waters could rise faster than officials can close roads with rainfall rates reaching 1-3 inches per hour in the heaviest downpours. Motorists in this situation could become stranded and be put in harm's way.

Never attempt to drive through a flooded roadway. Doing so puts not only you and your occupants at risk for drowning, but also your would-be rescuers.

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The current could be strong enough to sweep your vehicle downstream into deeper water as 1-2 feet of water is enough to cause most vehicles to lose control. The water level may rapidly rise across roadways, which may be compromised below the surface.

Parents are urged to keep their kids away from stream banks and culverts. The bank of a stream can give way, and rapidly rising water can sweep away onlookers.

Even if flooding does not ensue, travel disruptions are likely due to poor visibility and heavy rainfall. Lengthy airline delays are possible. Motorists will need to reduce their speed to lower the risk of hydroplaning.

Patricia and moisture from the Gulf of Mexico are to blame for the heavy rain and flood incidents.

See photos of damage in Mexico caused by Hurricane Patricia:

19 PHOTOS
Hurricane Patricia damage and aftermath
See Gallery
Patricia to spread flood threat from Mississippi to the Florida Panhandle on Monday
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)
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Patricia rapidly intensified into the strongest hurricane on record early Friday morning and slammed into southwestern Mexico Friday evening with catastrophic force.

The mountainous terrain of Mexico caused Patricia to weaken rapidly, but reached the northwestern Gulf of Mexico as a tropical rainstorm.

Winds created by the storm system will reach gale force at times along the Alabama and Florida Panhandle coast on Monday.

The winds blowing onshore could lead to coastal flooding, especially during high tide.

Patricia flooding

Drier air will gradually sweep in from west to east across Texas and Louisiana during the first part of the new week. At the same time, tropical moisture will be spreading to the Midwest and Eastern U.S., leading to the most significant rainfall in a few weeks for many of those communities.

Even as the rain comes to an end and smaller streams and rivers return to their banks, larger rivers may rise as the flood waters drain downstream. This includes the Trinity River in eastern Texas.

There is a long-term benefit to the torrential rain inundating the South Central states--ending the unusually dry spell that resulted in extreme to exceptional drought conditions developing across nearly a quarter of the area from Texas and Oklahoma to Mississippi.

Content contributed by AccuWeather Meteorologists Alex Sosnowski and Brett Rathbun.

PHOTOS: Hurricane Patricia's path across the South

18 PHOTOS
Hurricane Patricia storm photos, satellite photos and evacuations
See Gallery
Patricia to spread flood threat from Mississippi to the Florida Panhandle on Monday
IN SPACE - In this handout photo provided by NASA, Hurricane Patricia is seen from the International Space Station. The hurricane made landfall on the Pacfic coast of Mexico on October 23. (Photo by Scott Kelly/NASA via Getty Images)
View of a breakwater following the passage of Hurricane Patricia in Puerto Vallarta, Mexico 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/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
View of a street in Manzanillo, Colima state, Mexico on October 23, 2015, during hurricane Patricia. The strongest hurricane ever recorded crashed into Mexico's Pacific coast on Friday, ratcheting up fears that super-storm Patricia will unleash death and destruction with its powerful winds and driving rain. AFP PHOTO / Jonathan Levinson (Photo credit should read Jonathan Levinson/AFP/Getty Images)
View of the street during the arrival of hurricane Patricia in Puerto Vallarta, Mexico on October 23 ,2015. Monster Hurricane Patricia roared toward Mexico's Pacific coast on Friday, prompting authorities to evacuate villagers, close ports and urge tourists to cancel trips over fears of a catastrophe. The US National Hurricane Center called Patricia the strongest eastern north Pacific hurricane on record. It said the storm will make a potentially catastrophic landfall later Friday in southwestern Mexico. AFP PHOTO/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
Municipal workers collect branches from a flooded street in Manzanillo, Colima state, Mexico on October 23, 2015, during hurricane Patricia. The strongest hurricane ever recorded crashed into Mexico's Pacific coast on Friday, ratcheting up fears that super-storm Patricia will unleash death and destruction with its powerful winds and driving rain. AFP PHOTO / Jonathan Levinson (Photo credit should read Jonathan Levinson/AFP/Getty Images)
View of Puerto Vallarta, Mexico on October 23, 2015, during hurricane Patricia. Monster Hurricane Patricia roared toward Mexico's Pacific coast on Friday, prompting authorities to evacuate villagers, close ports and urge tourists to cancel trips over fears of a catastrophe. The US National Hurricane Center called Patricia the strongest eastern north Pacific hurricane on record. It said the storm will make a potentially catastrophic landfall later Friday in southwestern Mexico. AFP PHOTO/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
Puerto Vallarta #Huracán @Patricia https://t.co/sEEBdzwbdG
Hurricane Patricia https://t.co/Om0nKibkMY
VIDEO: Hurricane #Patricia: in Cihuatlán in the state of Colima. Palm trees figting against wind. https://t.co/urNul5eiIJ v @alezrodriguez
Members of the Red Cross prepare a temporary shelter in Puerto Vallarta, Mexico on October 23 ,2015, during hurricane Patricia. Monster Hurricane Patricia roared toward Mexico's Pacific coast on Friday, prompting authorities to evacuate villagers, close ports and urge tourists to cancel trips over fears of a catastrophe. The US National Hurricane Center called Patricia the strongest eastern north Pacific hurricane on record. It said the storm will make a potentially catastrophic landfall later Friday in southwestern Mexico. AFP PHOTO/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
Mexican soldiers patrol streets during the arrival of hurricane Patricia in Puerto Vallarta, Mexico on October 23 ,2015. Monster Hurricane Patricia roared toward Mexico's Pacific coast on Friday, prompting authorities to evacuate villagers, close ports and urge tourists to cancel trips over fears of a catastrophe. The US National Hurricane Center called Patricia the strongest eastern north Pacific hurricane on record. It said the storm will make a potentially catastrophic landfall later Friday in southwestern Mexico. AFP PHOTO/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
Evacuees remain at a shelter in Puerto Vallarta, Mexico on October 23 ,2015, during hurricane Patricia. Monster Hurricane Patricia roared toward Mexico's Pacific coast on Friday, prompting authorities to evacuate villagers, close ports and urge tourists to cancel trips over fears of a catastrophe. The US National Hurricane Center called Patricia the strongest eastern north Pacific hurricane on record. It said the storm will make a potentially catastrophic landfall later Friday in southwestern Mexico. AFP PHOTO/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
View of street at Boca de Pascuales community as residents are evacuated by local authorities before the arrival of hurricane Patricia in Colima State, Mexico on October 22,2015. Fast-moving Patricia grew into an 'extremely dangerous' major hurricane off Mexico's Pacific coast on Thursday, forecasters said, warning of possible landslides and flash flooding. AFP PHOTO/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
Residents of Boca de Pascuales, Colima State, Mexico, are evacuated on October 22, 2015, before the arrival of hurricane Patricia. Fast-moving Patricia grew into an 'extremely dangerous' major hurricane off Mexico's Pacific coast on Thursday, forecasters said, warning of possible landslides and flash flooding. AFP PHOTO/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
A man leaves his house in Boca de Pascuales, Colima State, Mexico, on October 22, 2015, before the arrival of hurricane Patricia. Fast-moving Patricia grew into an 'extremely dangerous' major hurricane off Mexico's Pacific coast on Thursday, forecasters said, warning of possible landslides and flash flooding. AFP PHOTO/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
Residents of Boca de Pascuales, Colima State, Mexico, are evacuated on October 22, 2015, before the arrival of hurricane Patricia. Fast-moving Patricia grew into an 'extremely dangerous' major hurricane off Mexico's Pacific coast on Thursday, forecasters said, warning of possible landslides and flash flooding. AFP PHOTO/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
Waves break on the beach in Boca de Pascuales, Colima State, Mexico, on October 22, 2015. Fast-moving Patricia grew into an 'extremely dangerous' major hurricane off Mexico's Pacific coast on Thursday, forecasters said, warning of possible landslides and flash flooding. AFP PHOTO/HECTOR GUERRERO (Photo credit should read HECTOR GUERRERO/AFP/Getty Images)
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