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For Dreary Northeast, Mid-Atlantic -- Better Weather Ahead
August 14, 2017
UPDATED By WeatherBug Meteorologists, James West and Matt Mehallow
The end of the prolonged streak of gray and dreary weather across the Northeast and Mid-Atlantic is in sight, with sunshine trying to return Sunday and Monday. However, some more showers will keep things soggy until the weather pattern finally breaks.
A slow-moving upper-level low-pressure system now just off the Delmarva Peninsula is producing this soggy weather and overcast pattern. This low will take its sweet time moving northward along the East Coast Saturday, drawing Atlantic moisture north and west into the Mid-Atlantic and Northeast.
Rainfall totals through Saturday may only be half inch or less for locations such as Washington, D.C., New York City, Pittsburgh and Cleveland, Ohio, but the stubborn weather pattern will keep the weather cloudy. Any breaks in the clouds will be short-lived, and this will help to keep the temperatures cool. Highs across the Northeast will only reach the upper 50s and lower 60s, some 10-to-15 degrees below average.
The low-pressure system causing all of the cool, cloudy weather will slowly weaken on Saturday, and another cold front arriving early Sunday will finally push that low away from the Eastern Seaboard. By the beginning of next week, drier weather may be poised to return to the East.
Stubborn weather patterns, known as “blocking patterns” are not unusual this time of year. The jet stream, the ribbon of strong upper-level winds can get stuck between warm and cold air, causing the disturbances to move little. In this case, strong ridging over the western Atlantic and across the Plains will cause low pressure systems to set up along the East and West coasts.