NYC, most of Tri-State under Flood Watch for Tuesday

Governor Kathy Hochul urged New Yorkers to exercise caution ahead of a storm forecast to bring heavy rain throughout the state Tuesday and Wednesday with flash flooding likely.

Beginning Tuesday, a weather system will stall over the state bringing prolonged rain, thunderstorms and flash flooding. The Mid-Hudson, New York City and Long Island regions have a Moderate or 40 to 70 percent chance for flash flooding, while the Capital Region and Mohawk Valley have a Slight risk or 15 to 40 percent chance. The rest of the state has a Marginal flash flood risk or 5 to 15 percent chance. Widespread rainfall totals of two to five inches are likely, with localized peak totals of six inches of rainfall possible. Areas across the Catskills could see totals of six to eight inches of rainfall through Wednesday morning. With heavy rain, scattered flash flooding is likely, which will make travel hazardous due to ponding water and reduced visibility.

"New York State will be experiencing a prolonged rain event beginning Tuesday that will bring heavy rains and cause flash flooding - New Yorkers should stay vigilant, stay informed, and use caution," Governor Hochul said. "As State agencies are ready and mobilized to keep New Yorkers safe, it is important for everyone to do their part by monitoring your local forecast and when in doubt, turn around, don't drown."

Before and During the Storm

Stay Informed: Monitor your local weather forecast and follow any warnings that may be broadcast.
Follow Instructions from Local Officials: If you are advised by emergency officials to take immediate action such as evacuation, do not wait - follow all orders promptly.
Do Not Walk, Swim or Drive Through Floodwaters: One foot of moving water can sweep a vehicle away. If you have doubts, remember: "Turn Around, Don't Drown!"
Know your evacuation route and how to get to higher ground.
Know your area's type of flood risk - visit FEMA's Flood Map Service Center.
Have a flood emergency plan in place that includes considerations for your children, pets and neighbors.
Have an emergency go bag ready to grab for you, your family and your pets that includes any medications you may need.
Check in with elderly neighbors or those who may have mobility issues.
Do not touch downed power lines.
Keep your phone charged.
Keep a small disaster supply kit in the trunk of your car.

After Flood Waters Have Receded

Wait until an area has been declared safe before entering. Be careful driving, since roads may be damaged and power lines may be down.
If your home or apartment has been flooded, DO NOT turn on electrical appliances until an electrician has checked the system and appliances.
Throw out any medicine or food that may have had contact with flood waters.
Keep your automobile fueled. If electric power is cut off, gasoline stations may not be able to pump fuel for several days.
Do not touch downed power lines.
For more preparedness information and safety tips from the New York State Division of Homeland Security and Emergency Services, visit dhses.ny.gov. The National Weather Service website also includes Flood Safety Tips.

There were more than 1,500 flight cancellations Monday night across several airports due to severe storms.

Flights out of LGA were seeing delays of over an hour.

There are already more than 600 flight cancellations Tuesday, and the FAA expects flight delays Tuesday from Boston through the South of DC due to thunderstorms.

American, Delta, United and JetBlue have issued travel waivers for Tuesday, allowing customers to rebook their flights for a later date this week without any extra fees or fare differences.

Tuesday morning will be mainly dry, but a muggy start but by early afternoon, the flooding downpours will begin. Once the rain starts, there will be rounds of it. Some of those storms can have damaging wind gusts and hail.

The flood threat goes into Wednesday morning.

In general, we could see 1 to 3 inches, but some areas could see 4 to 5 inches of rain.