A coastal flooding advisory was issued by the National Weather Service at 6:38 a.m. Wednesday, effective for Thursday between 5 a.m. and 7 a.m. for Hudson, Essex and Union counties.

The weather service describes: “Flooding of up to three feet above ground level is expected in vulnerable areas near the waterfront and shoreline.”

“Flooding of properties, parks and roads and only isolated road closures are expected,” the weather service explained. “If travel is necessary, please allow additional time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take necessary measures to protect flood-prone properties.”

Deciphering advisories, watches and warnings: understanding weather warnings

• Flash Flood Warning: Take Action!

A flash flood warning is issued when a flash flood is imminent or already occurring. In flood-prone areas, it is critical to immediately move to higher ground. A flash flood is a sudden and intense flood that can develop within minutes to hours, and can even occur in areas where there is currently no rainfall.

• Flood Warning: Take Action!

A flood warning is issued when flooding occurs or is already underway.

• Flood Advisory: Please note:

A flood advisory is issued when flooding is not expected to be severe enough to issue a warning. However, it can cause significant inconvenience and if care is not taken, it can lead to situations that could endanger lives and/or property.

• Flood Watch: Be Prepared:

When conditions are favorable for flooding, a flood watch is issued. It does not mean that flooding will occur, but it is possible.

Weather Service Flood Safety Guidelines: Weathering the Storm

Floods can pose a significant threat, especially if you live in a flood-prone area or camp in a low-lying area. To ensure your safety, the weather service offers essential flood safety guidelines:

Move to higher ground:

If you live in a flood-prone area or are camping in low-lying terrain, moving to higher ground is the first step to safety.

Follow evacuation orders:

If local authorities issue an evacuation order, follow it immediately. Before you leave, secure your home by locking it.

Disconnect utilities and appliances:

If time permits, disconnect your utilities and appliances. This precaution minimizes electrical hazards during flooding.

Avoid basements and submerged areas:

Avoid basements or flooded rooms with electrical outlets or cords. Preventing electrical accidents is crucial.

Evacuate immediately for safety:

If you notice sparks or hear buzzing, crackling, popping or popping sounds, evacuate immediately. Avoid water that may be charged with electricity.

Stay away from floods:

Never attempt to walk through flood water. Even just six inches of fast-moving water can knock you over with force.

Find high ground when you’re stuck:

If you become trapped by moving water, reach the highest point possible and call 911 to contact emergency services.

During heavy rainfall there is a risk of flooding, especially in low-lying and flood-prone areas. Remember never to drive through water on the road, even if it seems shallow. According to the weather service, just a foot of fast-moving water can sweep away most cars. Prioritize your safety by staying informed and prepared.

Advance Local Weather Alerts is a service from United Robots, which uses machine learning to gather the latest data from the National Weather Service.