More than half a million customers remain without power in Louisiana, while communities in Louisiana and Mississippi are still reeling from Isaac's deluge with multiple areas recovering from dam breaks or controlled releases of dams to prevent a disaster.
According to Entergy, 526,326 people were still in the dark in Louisiana as of 6:30 a.m. EDT Friday.
Meanwhile, with fears of the breaching of the Percy Quin Dam south of McComb, Miss., due to being stressed by Isaac's heavy rainfall, evacuations were forced for Tangipahoa Parish in Louisiana on Thursday.
The Associated Press reports that a controlled breach of the Percy Quin Dam began late Thursday afternoon to prevent a failure of the dam that could send flood waters rushing south into communities such as Kentwood, La.
Dams have also failed in Slidell, La., and a controlled breach was performed in Plaquemines Parish, La.
Animated satellite loop of Isaac moving across the Gulf. Satellite images from NOAA.
Excessive Rainfall Amounts
Vero Beach: 16.60 inches
Royal Palm Beach: 16.29 inches
Boynton Beach: 14.41 inches
Port St. Lucie: 13.04 inches
Aberdeen: 12.41 inches
Palm City: 11.69 inches
New Orleans: 20.08 inches
Reserve: 13.46 inches
Livingston: 13.16 inches
Hammond: 11.93 inches
Terrytown: 10.56 inches
Slidell: 10.40 inches
Kiln: 17.04 inches
Marion: 15.02 inches
Saucier: 12.78 inches
Picayune: 12.17 inches
Diamondhead: 12.04 inches
Long Beach: 11.95 inches
Grand Bay: 11.07 inches
Mobile: 9.67 inches
Wilmer: 8.75 inches
Fairhope: 6.42 inches
Daphne: 5.87 inches
Theodore: 5.12 inches
"Just witnessed water rescue of dozens of people trapped in their homes by flooding in Braithwaite, LA. #isaac," tweeted Tim Wetzel on Wednesday, Aug. 29, 2012.
Storm Surge Heights
Shell Beach: Between 9 and 11 feet
Lake Pontchartrain at New Orleans: Around 6 feet
Grand Isle: Around 5 feet
Pascagoula: Around 4 feet
Mobile Bay: Around 3-5 feet
Severe Weather Spawned by Isaac
On Thursday, Aug. 30, 2012, five tornadoes touched down in Mississippi and Alabama. On Wednesday, Aug. 29, 2012, Isaac spawned seven tornadoes across southern portions of Mississippi and Alabama. As a tropical storm, Isaac had produced two tornadoes in Florida on Monday, Aug. 27, 2012.
Trees were downed and snapped by a possible tornado 1 mile east of Toxey, Ala., on Thursday, Aug. 30, 2012.
A possible tornado destroyed a barn, damaged a second barn and knocked down numerous trees near Increase, Miss., on Thursday, Aug. 30, 2012.
A tornado touched down, destroying a home and injuring two people near Crandall, Miss., on Thursday, Aug. 30, 2012.
A tornado touched down near Meridian, Miss., downing trees and power lines on Thursday, Aug. 30, 2012.
A tornado was spotted on Market Street in Pascagoula, Miss., on Thursday, Aug. 30, 2012.
Power lines and trees were downed and a roof was torn off of a house by a tornado 5 miles southeast of Estothel, Ala., Wednesday night, Aug. 29, 2012.
Sand Hill, Miss.
Debris from a possible tornado was observed about 3 miles southeast of Sand Hill, Miss., late Wednesday, Aug. 29, 2012.
Gulf Park Estates, Miss.
A tornado damaged homes and knocked down trees and power lines late Wednesday, Aug. 29, 2012.
Old Texas, Ala.
Emergency Management reported a possible tornado in northeastern Monroe County, Ala., about 2 miles northeast of Old Texas on Wednesday, Aug. 29, 2012.
Stone County Emergency Management reports that a roof was torn off of a grocery store by a possible tornado on Wednesday, Aug. 29, 2012.
Two tornadoes struck Gulfport, Miss., on Wednesday, Aug. 29, 2012. Structural damage from a possible tornado was reported in the Orange Grove area. Another twister damage several homes in the vicinity of 17th Street and 19th Avenue.
A waterspout moved onshore on Monday, Aug. 27, 2012, damaging six homes 2 miles east-southeast of Tampa, Fla. Fences, trees and roofs were damaged on the properties.
Vero Beach, Fla.
An EF-0 tornado touched down on Monday, Aug. 27, 2012, impacting Vero Palm Estates, Countryside Mobile Home Park and Paraside Park Lifting about 5 miles west of Vero Beach. The tornado produced a discontinuous damage path, including minor damage to 62 structures and major damage to 31 structures.
Dry and sunny conditions will continue in San Francisco for the the official start to winter and the Christmas holiday.
Sunshine will return in full force for the weekend, the official start to winter, and Christmas in Los Angeles.
Big changes are on the way for parts of the Western and Central states late this week and into this weekend.
Similar to the days prior to Thanksgiving, the worst weather will focus on the days prior to Christmas as millions of travelers take to the roads and skies in the U.S. and southern Canada.
Warm air is forecast to surge into much of the eastern half of the nation by the weekend and will be accompanied by heavy rain and flooding risk in some locations.
Thunderstorms in parts of the South this weekend may become strong enough to threaten lives and property.
Little Rock, AR (1998)
282 straight days without subfreezing temperatures, longest streak on record.
Lander, WY (1924)
Bar. pressure 31.29" 1060 mb.
Atlantic Ocean (1984)
Hurricane Lili northeast of Puerto Rico. Only the 6th tropical storm in December since 1886.