A special weather statement has been issued for a significant portion of Alberta and southern and central Saskatchewan as a strong low-pressure spring storm, known as an Alberta clipper, approaches the region. The warning extends from just north of Edmonton southeast to the U.S. Border.
The system is expected to bring a dramatic shift in weather, beginning Wednesday with spotty showers and possible thunderstorms moving northeast from the mountains. Rain is forecasted to increase overnight in the Edmonton area, tapering off through Thursday morning and afternoon, with some lingering precipitation possible through Friday and Saturday.
Wind Hazards and Potential Damage
Strong and potentially damaging winds are expected to arrive early Thursday morning. Environment Canada reports that gusts of 80 to 100 kilometres per hour are expected across parts of central and southern Alberta, while Edmonton is likely to see winds in the range of 40 to 80 km/h.
These wind speeds could result in damage to roofs, fences, branches, and soft shelters. Residents who have begun summer yard preparations are advised to bring indoors or tie down any items and plants that could be blown away.
The special weather statement also warns of possible disruptions to utilities, services, and transportation. Driving conditions are expected to be very difficult, and high-sided vehicles, such as semi-tractor trailers, could be overturned by the wind.
Environmental Impact and Temperature Shifts
While the storm brings risks, the precipitation is considered necessary following an exceptionally dry period. In Edmonton, only 0.5 mm of rain has fallen so far in May, compared to a typical average of 44.2 millimetres.
This lack of moisture has left the wildfire risk in many areas of Alberta at a high to extreme level. Environment Canada notes that upwards of 30 millimetres of precipitation is possible in some areas by Friday morning.
As the low-pressure system moves east, it is expected to be followed by cold air. This shift may change some rain into snow and lead to below-average temperatures through Saturday and Sunday, though Victoria Day temperatures are expected to be closer to an average high.
Regional Outlook for Saskatchewan
Southern and central Saskatchewan are under a similar special weather statement for Thursday. The province is expected to experience southerly winds gusting to 80 km/h, followed by widespread westerly winds of 70 km/h with sustained gusts reaching 110 km/h.
Precipitation levels in Saskatchewan are expected to range between 20 and 40 mm by Friday night.
Frequently Asked Questions
Which large communities are included in the Alberta warning?
The warning includes Edmonton, Mayerthorpe, Drayton Valley, Red Deer, Wetaskiwin, Lloydminster, Drumheller, Brooks, Medicine Hat, and surrounding rural areas.
What are the expected wind speeds for central and southern Alberta?
Gusts of 80 to 100 kilometres per hour are expected in those regions, while Edmonton is likely to see winds between 40 and 80 km/h.
What is the forecasted precipitation for Saskatchewan?
Saskatchewan is expecting between 20 and 40 mm of precipitation by Friday night.
How are you preparing your home and property for the upcoming wind and rain?
