20 Jun 2023 | 06:23 AM UTC
Canada: Severe weather forecast across parts of central Alberta through June 21 /update 1
Adverse weather forecast across parts of central Alberta, Canada, through June 21. Possible transport, business, and utility disruptions.
Event
Heavy rainfall and snowfall are forecast across parts of central Alberta through at least June 21. The heavy downpours could trigger flooding in low-lying areas, as well as flash floods and ponding on road surfaces. Strong winds could cause property damage and power outages. Authorities have advised residents in affected areas to consider postponing nonessential travel until conditions improve and to slow down, watch for tail lights ahead, and be prepared to stop if visibility is reduced while driving.
As of late June 19, Environment Canada has issued red (the highest level on a three-tier scale) rainfall warnings across central Alberta. Widespread rain totals of 5-10 cm (2-4 inches) have fallen; an additional 2-4 cm (0.8-1.6 inches) of rainfall is forecast before the rain tapers off late June 20. Red snowfall warnings are in place across Jasper National Park and along Highway 93, from Lake Louise to Saskatchewan River Crossing. Snowfall accumulations of 20-40 cm (8-16 inches) are likely to continue over higher elevations. Officials could update and possibly extend the coverage of weather alerts over the coming days.
Authorities in Edson Town declared a state of local emergency June 19 due to flooding. At least 13 properties in the town are flooded while phone landlines and internet are down. Reports indicate that fallen powerlines have resulted in minor power outages.
The severe weather may contribute to transport disruptions throughout the region. Floodwaters and debris flows may render some bridges, rail networks, or roadways impassable, impacting overland travel in and around affected areas. Ponding on road surfaces could cause hazardous driving conditions on regional highways. Authorities could temporarily close some low-lying routes that become inundated by floodwaters. Heavy snow may make driving hazardous in some areas; authorities could implement temporary road closures or detours in such locations. Mountain passes and tunnels could be closed as a precautionary measure during periods of intense snowfall.
Severe weather could also trigger flight delays and cancellations at airports across the affected region. Flooding could block regional rail lines; freight and passenger train delays and cancellations are possible in areas with heavy rainfall and potential track inundation.
Disruptions triggered by inclement weather and resultant hazards, such as flooding or avalanches, could persist well after conditions have improved - it could take days before any floodwaters recede and/or officials clear debris. If there is severe damage to infrastructure, repair or reconstruction efforts may result in residual disruptions. Localized business disruptions may occur in storm-hit areas; some businesses might not operate at full capacity because of damage to facilities, possible evacuations, and some employees' inability to reach work sites.
Advice
Monitor local media for updated emergency and weather information. Seek updated information on weather and road conditions before driving or routing shipments through areas where severe weather is forecast. Plan accordingly for potential delivery delays if routing shipments by truck through the affected area. Do not attempt to drive through flooded areas. Confirm flights. Charge battery-powered devices in the case of prolonged electricity outages.
