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It’s officially the hottest day on record in SF

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This weekend’s record-breaking heat wave caused The City to activate its Emergency Operations Center, a team that organizes emergency information throughout city agencies in times of need. (Jessica Christian/S.F. Examiner)

UPDATE 9/2: Hours after this post was originally written, a new downtown San Francisco temperature record was set at 106 degrees, according to the National Weather Service.

Original report follows.

It has never been this hot in San Francisco — at least not in the last 143 years.

That’s how long records have been kept on The City’s temperature highs and lows, and on Friday afternoon, a blistering heat wave sweeping the Bay Area throughout Labor Day Weekend reached a record-breaking 104 degrees in San Francisco’s Duboce Triangle neighborhood.

“We are at an all-time record high temperature just this last hour,” said Steve Anderson, a forecaster with the National Weather Service, at 3:30 p.m., adding that the day has potential to get even hotter. “We still have about half an hour or an hour to go. It might still jump up a degree.”

SEE RELATED: High temps affect multiple Bay Area transit systems

The City’s last record-breaking heat wave saw temperatures swell to 103 degrees on June 14, 2000. Anderson called Friday’s temperatures “crazy hot.”

While San Francisco will reach its peak temperatures on Friday, inland areas such as Concord, Walnut Creek, Livermore and Antioch will be in the bullseye for the heat Saturday. Anderson predicted record-breaking temperatures in Livermore — the Bay Area’s notoriously hottest city — at 117 degrees.

SEE RELATED: 38 hospitalized for heat-related illnesses in SF

“When you are breaking an all-time record temperature in a place that’s usually hottest in the Bay Area, you know it’s hot,” said Anderson.

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