After record-breaking heat wave, light rain and May gray expected this week in Los Angeles

“May gray” conditions are expected to return to Southern California this week. (Allen J. Schaben / Los Angeles Times) After a brief but record-breaking heat wave over the weekend, a heavy marine …
Why do we have record-breaking temperatures?

These record-breaking temperatures are part of a long-term warming trend driven by human activities, primarily the emission of greenhouse gases. As part of its mission to expand our understanding of Earth, NASA collects critical long-term observations of our changing planet.

Was a hiker rescued during a heat wave?

A hiker was rescued near the Hollywood sign during Saturday’s heat wave. More than two dozen people were rescued Saturday during a record-breaking heat wave as temperatures climbed to the high 90s in parts of Southern California.

How does NASA assemble a temperature record?

NASA assembles its temperature record using surface air temperature data collected from tens of thousands of meteorological stations, as well as sea surface temperature data acquired by ship- and buoy-based instruments.

How many people were rescued from heat exhaustion in Los Angeles?

At least 15 people were rescued on Saturday in Orange County and nine in Riverside County. In Los Angeles, a hiker suffering from heat exhaustion was airlifted from the Hollywood Hills. The rapid rise in temperatures on Saturday shattered numerous heat records for this time of year.

Did a hiker suffer from heat exhaustion in Los Angeles?

In Los Angeles, a hiker who suffered from heat exhaustion was airlifted from the Hollywood Hills Saturday morning, according to the Los Angeles Fire Department. Griffith Park rangers notified law enforcement about the hiker — a 55-year-old woman — near the Cahuenga Peak trail between the Hollywood sign and Wisdom Tree.