Some parts of the island received up to 9in (23cm) of rainfall in a matter of hours on Tuesday evening.
In an emailed statement, the British government's Foreign Office said: "We are supporting the family of two British people following their deaths in Spain, and will do all we can to assist them at this deeply hard time".
Marks on the walls showed flood waters reached up to a height of at least a metre (three feet).
Emergency services in the archipelago updated information regularly on Twitter, sending out tweets in Spanish, Catalan, English and German in an indication of the prevalence of tourists and foreign residents on the island.
The deputy mayor of the town, Antonia Bauza, confirmed to Cadena SER radio that two others killed in the area were locals.
Tennis star and local lad Rafa Nadal helps in the clean-up efforts. The biggest numbers came from Germany and Britain.
The missing child had been in a vehicle in Sant Llorenc with his mother, who was one of those killed, a spokesman for the central government's representative in the Balearic Islands said.
AP Analysis: Missing writer shows Saudi Arabia's dark side Khashoggi was once a Saudi newspaper editor and is a familiar face on political talk shows on Arab satellite television networks. The interview was conducted three days before Khashoggi's disappearance, when he was in London for a conference, the BBC said.
Murkowski on Trump: I know Alaska 'better than he does' Trump on Twitter on Tuesday said he was "very proud" of Kavanaugh and his family, and disparaged the anti-Kavanaugh protesters. None of the witnesses the women said would corroborate their claims did so, and Kavanaugh passionately denied the allegations.
The 17-time Grand Slam victor also provided shelter at his tennis academy in Manacor for displaced people whose homes were severely damaged by the flash flood.
"Our most honest condolences to the loved ones of the victims of the serious floods in San Llorenc", he wrote.
Local television showed footage of beach umbrellas floating in the sea near S'Illot, one of the affected coastal villages.
"What is most urgent right now is to find missing people and address the concerns of their relatives and all neighbours", Prime Minister Pedro Sanchez said during a visit to the disaster zone.
Spain's central government "has taken the first steps to ensure that those affected receive the necessary help as soon as possible", government spokeswoman Isabel Celaa told reporters following a weekly cabinet meeting.
Spanish lawmakers observed a minute of silence in parliament in memory of the victims.
But will that be the reality? What do you think about the new Galaxy A9's price? You'd be forgiven for getting a bit confused. The Galaxy A9 (2018) might not be a flagship, but it keeps pace with its more powerful siblings in more than a few ways.
Responding to Saudi claims that the cameras were not functioning on October 2, Erdoğan said this was not a logical explanation. Suspicions are mounting that Saudi's crown prince ordered the murder of Saudi journalist Jamal Khashoggi in Turkey.
The Nokia 3 .1 Plus sports a 5.99-inch HD+ IPS display with an aspect ratio of 18:9 and for a change, does away with the notch. With all of these in mind, we simply don't see why the Nokia 7.1 can't be that budget Pixel 3 XL but with a different name.
A night after three of his calls at first base were reversed on video reviews, Angel Hernandez was the plate umpire. The Red Sox made it 4-0 when Vazquez lined a 2-1 fastball into the right field seats off Zach Britton.
There's no cure and some children appear to have long-term disabilities, while others recover completely or almost completely. Additionally, the CDC has found a possible link between an increase in a respiratory virus and an increase of AFM.
During the interview , Seann said: "I would rather not be having to address this publicly, but I feel like I have to". Walsh and Jones are set to appear on this Saturday's edition of the show despite the furore over the images.
They weren't included in Harry and Meghan's wedding so they're sure to be excited about the second royal wedding of the year . The Earl and Countess of Wessex's children, Lady Louise Windsor and Viscount Severn will be special attendants on the day.
Here's a look at Hurricane Michael by the numbers, from its historic impact to its winds to its high tides. People seek safety in a shelter as Hurricane Michael approaches, October 10, 2018, in Panama City, Fla .
The 26-year-old singer and actress is said to be seeking treatment after a rumored panic attack brought on by medical setbacks. Members of her family then drove her to Cedars-Sinai Medical Center in Los Angeles, before being released several days later.
About eight hours after landfall, Michael was downgraded to a Category 1 storm, with top sustained winds of 90 mph (150 kph). The remainder of Georgia, the Carolinas, and southern Virginia...3 to 6 inches, with isolated maximum amounts of 8 inches.
Trump Takes Swipe at Fed as Stocks Tumble
Despite Wednesday's sell-off, the S&P 500 would still need to more than double its losses. "I think the Fed is making a mistake ". In Paris, shares in Kering fell almost 10 percent, LVMH over seven percent and Hermes around five percent.
British tourists among Majorca flood victims
More than 8 inches of rainfall fell in just a few hours on Tuesday morning, according to the Spanish weather company Aemet. After opening his academy to flood victims, Rafael Nadal volunteered to help clear homes of water and mud.
Sears could file for bankruptcy as soon as this week
CNBC earlier reported that the company was arranging a bankruptcy loan, known as debtor-in-possession financing. Shares of real estate investment trusts (REIT) exposed to Sears properties also fell Wednesday.