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Mother’s Day Weekend Nor’easter

12 May 2017, 10:43 pm

Just in time for our Mother’s Day weekend, “Mother Nature” herself is giving the gift of clouds, showers, and maybe even a little snowfall. Oh, also a nor’easter!

Forecast precipitation through Sunday night. The greens show 0-1″, oranges 1-2″, and reds 3″+

The same energy associated with the tornadic weather Friday on the Gulf Coast will move up the eastern seaboard Saturday and Sunday (Mother’s Day) bringing heavy rain at times.

Forecast model projection for Saturday evening as thunderstorms Saturday push through the Southeast and heavy rain pushes through the Northeast. Greens and yellows indicate rainfall

The severe weather aspect from this system will provide a chance of severe thunderstorms across the Southeast, while colder and more stable air helps eliminate the severe threat for the Northeast. The timing looks like this: The coastal low will develop just off the Chesapeake Bay on Saturday afternoon while it gets slightly stronger. The central pressure of the storm will continue to drop Saturday night, showing signs of strengthening while it moves closer to Long Island and Cape Cod by Sunday morning.

The weather forecast map for Sunday morning, Mother’s Day. The L indicates the center of the low pressure while colors indicate rainfall. Note a little pink indicating a wintry mix for parts of New England’s mountains. The wind arrows are on showing the gusty breeze.

Then, like a classic New England coastal storm, the forecast is for the low pressure center to fall to around 987 millibars Sunday night off the coast of Maine. The forecast calls for a 24-hour central pressure fall of 17 millibars, which does not classify it as a “bomb” however still shows that it will be a quickly-strengthening low. By Monday the low nearly stalls off the coast of Maine, which will keep the Northeast in a cool and breezy weather pattern.

Monday morning weather forecast as the low pressure system slowly moves northeast bringing strong wind to the coastal areas.
Forecast high temperatures Saturday will be 10-15 degrees cooler than average…without factoring in the wind!

Here are the forecast numbers from the mid-Atlantic to the Northeast from Saturday to Sunday

Rainfall: 1 – 2″ possibly up to 3″ in isolated spots

Snowfall: Maybe a few inches above 4,000 feet elevation, any snow mostly confined to the New Hampshire’s White Mountains

Winds: Sustained 10-20 mph, but coastal gusts could reach 50 mph briefly

Temperatures: Merely 40’s and 50’s for high temperatures!

Suggestions: Indoor ideas with mom? Maybe a good idea. Carry along the umbrella and hold onto it tight! Have a backup plan in case you’re set on your outdoor plans this weekend.

For WeatherNation, Meteorologist Steve Glazier

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