Man and Dog Succumb To Severe Late Season Heat In Separate Incidents Around Eaton Canyon
This past Saturday, October 5th, 2024, an individual went hiking with their two dogs up the Sam Merrill Trail in Las Flores Canyon one mile west of Eaton Canyon while air temperatures were hovering in the low 90s. The individual hiked all the way up to the hotel ruins atop Echo Mountain before both dogs began suffering from heat illness. The hiker called 9-1-1 and the Altadena Mountain Rescue Team was dispatched to rescue them. However, before rescue crews could arrive, one of the dogs passed away.
Just 24 hours later on the evening of Sunday, October 6th, a 62-year old man with pre-existing health conditions hiking through Eaton Canyon collapsed of a heart attack brought on by heat illness. Despite performing CPR for 20 minutes, emergency crews were unable to resuscitate the man and he was declared dead at the scene. The temperature was 93.8°F at the time of the incident according to the nearby Southern California Edison weather station in the equestrian area.
Summer 2024 has finished with an average temperature of 78.97°F at the weather station in old town Pasadena, ranking as the 6th hottest summer on record out of 117 years. It also featured the area’s second hottest heat wave ever, reaching 114°F on September 6th. The heat continued into early October with a string of days in the low to mid 90s.
Recently, there has also been intense inversion layers at Eaton Canyon in the morning hours where cool air pools in the wash while heat collects at the ridge tops. These inversion layers form because cool air is innately more dense than warm air. Hikers beginning their climb at the Nature Center may experience temperatures rising from the low 60s all the way to 90°F once reaching Henninger Flats, even before sunrise. The following map shows temperatures throughout lower Eaton Canyon at 6:55 AM on the morning of Wednesday, October 2, 2024:
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