7:00 AM | **Severe thunderstorm threat later today/early tonight and then a break in the action**
Paul Dorian
6-Day forecast for the DC metro region
Today
Partly sunny, quite warm, very humid, breezy, showers and thunderstorms likely in the afternoon, some of the late day storms can be severe, watch for localized flooding, highs in the upper 80’s
Tonight
Evening showers and thunderstorms likely, some of the storms can be severe, watch for localized flooding, remaining mainly cloudy after midnight, mild, muggy, lows in the mid 60’s
Friday
Partly sunny, windy with gusts to 35 mph, more comfortable with lowering humidity, near 80 degrees for afternoon highs
Friday Night
Mainly clear, breezy, cool, upper 50’s for overnight lows
Saturday
Mainly sunny, comfortable, near 80 degrees
Sunday
Mainly sunny, warm, low-to-mid 80’s
Monday
Partly sunny, quite warm, chance of showers and thunderstorms, near 90 degrees
Tuesday
Partly sunny, very warm, chance of showers and thunderstorms, upper 80’s
Discussion
An unusually strong low pressure system for the 20th of June will move towards northwestern Pennsylvania by later today and a strong surface cold front will slide towards the east coast. At the same time, a powerful wave of energy in the upper part of the atmosphere will move over the Mid-Atlantic region. As a result, there can be an outbreak of severe thunderstorms from later this afternoon into early tonight that could impact the DC-to-Philly-to-NYC corridor with damaging wind gusts, hail and even a few isolated tornadoes. Once the strong cold front clears the coast by early tomorrow, the threat for rain will wind down, humidity will drop, and the winds will pick up noticeably from a northwesterly direction gusting to 35 mph at times. High pressure will build into the area later tomorrow and it may just stay in control for most of the upcoming weekend, but more showers and thunderstorms are possible here by Sunday night and Monday.
Meteorologist Paul Dorian
Perspecta, Inc.
perspectaweather.com