For the 2019 season, Sundays at Mawson are fast becoming known as ‘Blizz Sundays’, with this past weekend bringing yet another one!
This weekend’s blizz had maximum gusts of 96kts (about 178km/h) and dumped a huge amount of snow across the station. This takes our yearly blizz total to 19 and we're well on the way to passing the yearly mean of 37 blizzard days!
When we talk about a blizzard down south, it’s defined as:
- Sustained wind at 34 knots (63km/h) or more persisting for at least one hour;
- Air temperature below 0ºC; and
- Visibility below 100 metres.
Walking to and from work on blizz days can prove a bit of a chore when the visibility is down to 10 metres or less and the wind speed is nearing your body weight! That’s when feet have a tendency to be blown away from underneath and travelling in the safety of groups of two or three is the only way to go.
Sometimes we have to dig our way into a building after these weather events. This time around I would not have been able to release the daily weather balloon without a little help. Now and then the snow forces its way through the door seals and can leave quite a mess on the inside too.
Leon (Mawson Bureau of Meteorology Technician)