'Pokémon Go' Good for Teens | Patch PM

Stories to talk about tonight:

Pokémon Go: Fun Gaming App or an Accidental Treatment?

Pokémon Go, a gaming app that appears to have both entertainment value and inadvertent benefits, according to Michael Oberschneider, an Ashburn clinical psychologist.

"In contrast to sitting around and playing a video game in isolation for a long period of time, the teen playing Pokémon Go is active, is outdoors and is likely socializing more than he or she would've been with a traditional video game," he writes. >>> Read more.

• More: 10 Crazy Places We Found PokémonPlayers

Severe Thunderstorm Watch Issued Monday for Northern Virginia

A Severe Thunderstorm Watch is in effect for the Washington, D.C., metro region Monday until 8 p.m., according to an alert sent out Monday afternoon by the National Weather Service.

The Washington Post's Capital Weather Gang notes that any storms coming through the area could pack gusty winds, lightning and heavy downpours. >>> Read more.

Eastbound Interstate 66 Closed After Truck Fire in Prince William County

• A tractor trailer full of tomatoes crashed against a guard rail and caught fire, according to Virginia State Police. The driver was charged.

'Ghosts of Great Falls:' Chen Family Murders in '95 Featured on Investigation Discovery Channel

• Disappearance of three members of a wealthy Taiwanese family living in Great Falls is investigated on "Deadline: Crime with Tamron Hall."

'Open Carry' Laws Under Scrutiny After Dallas, Baton Rouge Police Killing

• In Dallas, people toting rifles to express 2nd Amendment rights added chaos, confusion to scene; after Baton Rouge, law's perils showcased.

Patch PM shares a few of the day’s must-read items from our Virginia and D.C. communities. The Patch platform covers communities across the region.