Video: Mass Flooding Takes Over NYC Streets, Subways and Parks All of New York City is under a state of emergency.

By Emily Rella

Opinions expressed by Entrepreneur contributors are their own.

Flash flooding hit all five boroughs of New York City on Friday afternoon, causing widespread panic and cancellations across the city.

Hundreds took to social media to document flooding on roadways, subway stations, and apartment buildings as many struggled to get to where they needed to go — with some people unable to leave their homes at all.

New York Governor Kathy Hochul declared a state of emergency on Friday for all five boroughs of New York City, along with Long Island, and the Mid-Hudson region of the state.

Flash flood warnings are in order for all of the affected areas through Friday, and New Yorkers are being encouraged to avoid walking or driving through these areas.

As of 3 p.m., over six inches of rain was recorded in Brooklyn, the borough that early reports show may have been the hardest hit by the storm.

"This is a dangerous weather condition and it is not over," Mayor Eric Adams said early Friday morning during a press briefing. "I don't want those gaps in heavy rain to give the appearance that it is over, it is not."

A full travel advisory for NYC is intact through 6 a.m. Saturday.

Emily Rella

Senior News Writer

Emily Rella is a Senior News Writer at Entrepreneur.com. Previously, she was an editor at Verizon Media. Her coverage spans features, business, lifestyle, tech, entertainment, and lifestyle. She is a 2015 graduate of Boston College and a Ridgefield, CT native. Find her on Twitter at @EmilyKRella.

Want to be an Entrepreneur Leadership Network contributor? Apply now to join.

Buying / Investing in Business

Former Zillow Execs Target $1.3T Market

Co-ownership is creating big opportunities for entrepreneurs.

Franchise

The Hottest Industries Today

Our list of the franchises best positioned for growth, even in uncertain times.

Business Ideas

70 Small Business Ideas to Start in 2025

We put together a list of the best, most profitable small business ideas for entrepreneurs to pursue in 2025.

Marketing

How to Get Your First 1,000 Email Subscribers (The Smart Way)

Here's a step-by-step system for startup founders to build their first 1,000 engaged email subscribers — without guesswork or gimmicks.

Starting a Business

Entrepreneur+ Subscriber-Only Event | May 28: How This Founder Sold 3 Million Units of His Toy Ball Idea

Subscribe to Entrepreneur+ for just $5! Get access to all member benefits, including our next Subscriber-Only Event with Joe Burke, Founder of Ollyball.

Business News

The U.S. Mint Announced It Will Stop Making Pennies. Here's How It Will Affect Businesses and Consumers.

Can you still pay with pennies? How will businesses make exact change? Here's what we know.