Weather tracker: US heatwave breaks September temperature record

The new September temperature record is now 107F or 41.7C in Salt Lake City, Utah

Through this week the heatwave in the US has been continuing, allowing more September records to fall. Salt Lake City in Utah saw its September temperature record broken, with each day hotter than the last, until the current highest ever September temperature was recorded on Wednesday. The new September temperature record is now 107F or 41.7C, which astonishingly is also tied as the all-time temperature record for Salt Lake City. It is extraordinary to record a tied record high temperature in meteorological autumn.

Farther south earlier this week, the tropical storm off the west coast of Mexico, previously Twelve-E, developed into a category 2 hurricane, bringing sustained winds of 100mph, and was named Hurricane Kay. The hurricane brought intense flooding all the way up the west coast of Mexico, from Oaxaca to Nayarit by Thursday 8 September. In the last 48 hours Kay has weakend into a tropical storm, but continues to bring extreme rain in its path, across the Baja California Peninsula and up towards the US state of California.