WEATHER ALERT: Hour-By-Hour Forecast As New Jersey Braces For Black Ice, Record Lows

The National Weather Service has issued four weather alerts, saying a harsh arctic outbreak packed with tropical-storm-force gusts will continue Sunday, bringing the coldest temperatures since 2004.

Pay particularly close attention to Sunday night’s forecast.

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• WEATHER ALERT: How Much Snow Fell In Your New Jersey Hometown

Here is the hour-by-hour forecast, from the National Weather Service:

Hackettstown (North Jersey)

• Sunday: Areas of blowing snow and a chance of snow showers before 10 a.m., then areas of blowing snow after 10 a.m.. Partly sunny, with a high near 11. Windy, with a northwest wind 22 to 28 mph, with gusts as high as 50 mph. Chance of precipitation is 30 percent. New snow accumulation of less than a half inch possible.
• Sunday night: Mostly clear, with a low around -3.
• Washington’s Birthday: Sunny, with a high near 15.
• Monday night: Mostly cloudy, with a low around 2.

Montclair (Northeast New Jersey)

• Sunday: Areas of blowing snow and a chance of snow before 9 a.m., then areas of blowing snow and a slight chance of snow between 9am and noon. Cloudy, then gradually becoming mostly sunny and cold, with a temperature falling to around 9 by 5 p.m. Windy, with a northwest wind 24 to 28 mph, with gusts as high as 50 mph. Chance of precipitation is 30 percent.
• Sunday night: Mostly clear, with a low around 0. Blustery.
• Washington’s Birthday: Sunny and cold, with a high near 19.
• Monday night: Partly cloudy, with a low around 8.

Metuchen (Central Jersey)

• Sunday: Areas of blowing snow and a chance of snow showers before 11 a.m., then areas of blowing snow and a slight chance of snow showers after 11 a.m. Partly sunny, with a high near 17. Windy, with a northwest wind 30 to 32 mph, with gusts as high as 55 mph. Chance of precipitation is 40 percent. New snow accumulation of less than a half inch possible.
• Sunday night: Partly cloudy, with a low around -1. Windy.
• Washington’s Birthday: Sunny, with a high near 19.
• Monday night: Mostly cloudy, with a low around 7.

Manahawkin (South Jersey)

• Sunday: Areas of blowing snow and a slight chance of snow showers. Partly sunny, with a high near 20. Windy, with a northwest wind 32 to 37 mph, with gusts as high as 60 mph. Chance of precipitation is 20%.
• Sunday night: Partly cloudy, with a low around 3. Windy.
• Washington’s Birthday: Mostly sunny, with a high near 23. Blustery.
• Monday night: Mostly cloudy, with a low around 15.

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