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Know It All: Friday's top stories at NBC News

Nick Carter shovels debris into a dike as heavy rains cause severe flooding in Boulder, Colo., on Thursday.
Nick Carter shovels debris into a dike as heavy rains cause severe flooding in Boulder, Colo., on Thursday.Mark Leffingwell / Reuters

Here are some of the top stories we're following Friday at NBC News:

Thousands evacuated in Colorado flooding

After days of rain that caused widespread flooding and left three people dead, a 30-feet deep "surge of water, mud, rocks, and debris" was headed toward the outskirts of Boulder, Colo., on Friday, officials said. Thousands of people in the city were told to shelter in place, while about 4,000 more were given mandatory evacuation orders, police said. Read more at NBC News.

Wall Street remains highly unpopular: NBC/WSJ poll

It's not quite 99 percent, but five years after the collapse of Lehman Brothers, 42 percent of Americans say they're sour on Wall Street, according to a new poll by NBC News and the Wall Street Journal. Only 14 percent of respondents said they have a positive opinion of the New York financial institutions. Read more at NBC News.

Kerry on Syria: 'This is not a game'

With tensions running high on what to do after allegations that Bashar Assad's government used chemical weapons in Syria, Secretary of State John Kerry told reporters on Friday that ongoing talks with Russian officials were “constructive" so far. The talks resume Friday even as a damning report from U.N. war crimes investigators accused forces loyal to President Bashar Assad of preventing the sick and wounded from receiving medical care. Read more at NBC News.

Massive Jersey Shore boardwalk fire destroys businesses

A monster fire raged over an iconic Jersey Shore boardwalk, delivering another painful blow to the coastline ravaged by Hurricane Sandy less than a year ago. "We're getting kicked while we're down," the fire chief in Seaside Park, NJ, said of the fire that raged out of control for six hours and is thought to have begun at a Kohr's Brothers ice cream shop. Read more at NBC News.

1 in 5 Americans struggle to put food on the table

Four years after the global recession ended, a new poll from Gallup shows that 20 percent of Americans still say they sometimes don't have the money to feed themselves or their families. In reviewing the survey, the polling company said that the findings "suggest that the economic recovery may be disproportionately benefiting upper-income Americans rather than those who are struggling to fulfill their basic needs." Read it at NBC News and get more coverage of poverty in America.

#WallStreet: Twitter files for stock IPO

Twitter announced on Thursday that it wants to join other social media giants like Facebook and LinkedIn, saying it had submitted a document with the U.S. Securities and Exchange Commission for an initial public offering. The company, which has been valued at about $10 billion, announced its submission of an S-1 in a tweet. Read more at NBC News Business.