Australian Weather

09 Aug 2022, 10:48PM UTC

Snow has fallen on Bluff Knoll in the Stirling Range in SW Western Australia, with locals flocking to see the flakes. Image: It's usually just the very summit of the mountain that sees settled snow. Source: Jodie Jones. We wrote yesterday about the severe chill headed for the southwestern corner of WA, noting that a particularly icy pool of air was tracking northwards from the Southern Ocean. For example, Perth had its coldest day of 2022 to date yesterday, with temps in the single-digit range for all but a few hours and a maximum of just 12.1°C. That's the sort of weather when you'd pretty much expect snow on the Stirling Range. Locals knew it too, heading out in large numbers (as you can see in this ABC Video) to catch a glimpse of a weather phenomenon which generally only occurs once or twice a year in Western Australia. How unusual is snow in WA? As mentioned, it actually happens once or twice a year, but snow can fall as early as Easter and as late as mid-Spring. The Stirling Range is only an hour or so north of Albany at a latitude of 34.3° South. That would place it roughly halfway between Sydney and Canberra (on a north-south axis) if it were on the east coast. The highest point, Bluff Knoll, is a 1099 m summit. Again, to use an east coast example, that makes it similar in height (and latitude) to Blackheath, the Blue Mountains town two hours west of Sydney that also tends to receive one or two snowfalls each winter. So while some people may wake up this morning and go, "What??? It snowed in WA? Has the world gone crazy?" this is actually far from an uncommon event. As mentioned earlier, you just need a particularly cold airmass in the wake of a cold front, and the chart on Tuesday afternoon snows how the air striking the region around Albany has tracked northwards direct from polar region. You can also see that it tracked a fair way north along WA's west coast, which is why places like Geraldton struggled to get past the mid-teens on Tuesday. The good news for chilled-to-the-bone West Australians is that temps should warm in coming days with showers clearing too. The bad news is that the next front arrives on the weekend bringing showers, although temps likely won’t be quite so cold this time. Oh, and for the record, your humble correspondent has hiked to the summit of Bluff Knoll. It's a good challenging day walk, about two hours each way from the car park for fit people (so yeah, it took more like three hours each way!) The views from the top are absolutely sensational.

09 Aug 2022, 8:44AM UTC

The cancellation of the Manitoba Marathon due to extreme heat may provide a case study for athletic event management in extreme weather. As researchers in kinesiology and recreation management, we took an interest in how the disruption was handled not only professionally, but also from a personal perspective: one of us (Shaelyn) was participating in the half marathon. The race was cancelled after it had started, with runners already an hour into the race. The result was ambiguity and confusion. Runners were left scratching their heads both during and after the race: wondering what they were supposed to do during the disruption, and pondering how the course shutdown was handled after the event. Hot road races may become more common. The climate crisis is expected to increase severe weather , which can have devastating consequences such as loss of life, injury and illness when people are unprepared. Even when lives are not lost, the negative experience of an emergency can have psychological consequences . Runners can train for heat, wear appropriate clothing and hydrate, but even these steps are often not sufficient to overcome the effects of heat . Exercising in heat and humidity poses a serious challenge to the body's ability to regulate body temperature and running in such conditions can significantly decrease performance and lead to health issues such as exhaustion and heat stroke. Managing the hazards posed by a changing climate will be necessary for all community event organizers going forward. Shaelyn's first-person account is helpful in understanding what happened on the course during the cancelled Manitoba Marathon. Here is her experience: Like other runners, I had trained in an extremely cold winter and spring and was not prepared for a hot run in the record high temperatures that were forecast for this late June race. Event representatives urged runners to stay hydrated and to adjust their goal given the anticipated heat . I kept an eye on my email for an adjusted start time or cancellation. With no news, I headed to the start line. Once started, it didn't take me long to feel the heat of the day but volunteers did a great job of keeping us hydrated. However, I could not escape the heat; several miles in, my heart rate was above the ideal range. With eight kilometres left, a volunteer told us the course was closed and that we could keep running if we wanted to, which left me confused. Was the course really closed? Should I trust one volunteer? If the course was closed, what were my options? The course was not physically closed and the runners around me were still running. Aware of no alternative way of getting back other than on my own two feet, I kept running. This response is not surprising. When faced with a crisis, the Crisis and Emergency Risk Communication manual put forward by the U.S. Centers for Disease Control presents four ways people process information: When I crossed the finish line, there was no indication the course had closed. It wasn't until I listened to the news that I was able to confirm the closure. After recovering, I read Twitter threads from participants. My sense of confusion and uncertainty was not unique . Conflicting information circulated about water station closures and traffic no longer being controlled. Shutting down the course was understandable to protect the safety of runners. However, participants may have been hesitant to stop considering they had likely trained for months, and may have been using the race to try to meet a goal or qualify for another race. Effective communication reduces injury and loss-of-life during an emergency by providing the public with information to make good choices . A crisis can be the catalyst for organizations to build trust with their community or it can harm the relationship, depending on the strategy used . Race organizers should provide runners with essential information regardless of the specific hazard. Runners should have advance knowledge of what to expect in case of race disruption or rerouting prior to setting off on the course. This way, whether there is a weather disruption, act of violence or other potentially catastrophic event, racers will be prepared to react. Complicating the situation is the organizational structure of many events. Volunteers are essential for delivering many community events. While they bring skills and knowledge, they may not have specific training in emergency management nor be sufficiently prepared to help event participants navigate the challenges posed during a major disruption. Organization preparedness should include ensuring volunteer readiness to respond during an emergency. Events like the Manitoba Marathon provide runners with the opportunity to reach a goal that took months of training. This year though, many runners hobbled away from the event with mixed feelings about whether the event should have gone ahead, and if so, how the situation should have been managed. As record high temperatures continue across the world this summer , investment in emergency preparedness is necessary to ensure communities can stay safe while sharing meaningful experiences together.