Boston Police tweet manholes exploded this morning at Joy Street and both Mt. Vernon and Pinckney streets.

The Boston Fire Department is being kept busy this evening responding to multiple reports of manhole and power-line issues as overloaded lines give out under all the demand and heat.

Might be good to avoid towns with names beginning with M today:

Channel 4 reports flames shot 20 to 30 feet in the air when manholes exploded on Main Street in Medford around 10:30 a.m. and that several thousand people are now without power.

William Fleurant tweets traffic is, as you might expect, a mess there (where 38, 16 and I-93 come together).

MBTA Police report power went out at the Malden Orange Line station, trapping one person in an elevator.

At 302 Washington St., Boston Police tweet.

Steven Walsh captures the aftermath yesterday in front of 124 Harvard St.

Earlier:
Not the first attack for these devious holes in the ground.

Via Neal Simpson.

Wicked Local Brookline reports "geysers of fire" erupted at Pleasant and Browne streets yesterday.

Flaming manhole this morning.

The Crimson reports on flaming manholes early this morning:

A fire started underground on the corner of Mass Ave and Dunster Street was visible through several manholes in the Square this morning. Harvard's Holyoke Center, Cambridge Savings Bank, Au Bon Pain, and other nearby institutions were evacuated, and automobile access to the Square had been severely restricted by the Cambridge Fire Department. ...

NeutralSurface took photos, including the one on the right.

Channel 5 reports. NECN has video on "the underground mechanical failure" as well (great fire-AND-ice NECN screen capture).

Sushiesque was on the scene later in the morning taking photos of the aftermath:

Mishka gets the day off.

Michael: On second thought, maybe I'll go to Yale.

Crispyfoods captures Old Flameful outside the Pit:

Manhole explodes this afternoon on Needham Street near Rte. 9 in Newton (two blocks from Margalit, who is starting to wonder what the deal is with her neighborhood's karma).

Tires blown at coverless manhole on Nonantum Road in Brighton this morning.

Beso reports ongoing issues related to the North End exploding manholes - and the resulting Nstar repair work:

... The police have been downright nasty when asked the simpliest questions by tourists and delivery men and NSTAR has given residents NO INFORMATION on what's going on and when it's going to end. I have a tenant moving in on 9/1 and I honestly don't know where the poor girl is going to be allowed to park her truck. Normally, you can get a one day permit when moving but I can't get an answer for her.