New Jersey is expected to see some rainstorms on Friday, and with severe storms there is always the fear of flooding conditions.

New Brunswick was impacted by severe flooding earlier this week. Several people were trapped, and some homes were badly damaged.

Experts say flash flooding comes from multiple inches of rain coming down over a short period of time. Flooding happens when rivers or canals overflow.

When the National Weather Service issues a flood watch, that means the conditions for flooding are possible. A flood warning means that flooding is occurring now or will happen very soon.

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“If you live around waterways you want to make sure that you protect your home and you're ready to evacuate at a minute's notice,” says Dianne Concannon, with American Red Cross. “Have that go-bag ready to go with important papers or copies of that. Grab it and evacuate and follow the evacuation orders.”

Each municipality should have its own set of evacuation orders.

The Red Cross app will provide important information about what to do during and after a severe weather situation.