Heat wave to grip B.C. this week, wildfire concerns and smoke hazards linger
A high-pressure ridge is driving a significant heat wave and dry conditions across British Columbia this week. Heat warnings are in effect as temperatures are forecast to rise steadily through Thursday
A significant heat wave is expected across British Columbia this week, raising concerns about its impact on growing wildfires in the region.
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Temperatures are forecast to peak mid-to-late week in the southern Interior, with highs reaching the mid-to-upper 30s in the Okanagan Valley and nearing 40°C in some traditionally hotter locations, especially on Thursday. The South Coast will see highs in the mid-20s to low 30s through Thursday before temperatures moderate on Friday.
Smoke from wildfires, particularly those burning south of the border, is expected to significantly impact air quality across much of the interior and southern regions. Smoke may also cap temperatures by blocking sunlight from reaching the surface.
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A ridge over the western U.S. is driving warm, southern air into B.C., with temperatures peaking Wednesday, and remaining above seasonal through Thursday.
Pattern change brings relief and new risks
A weakening ridge later this week will allow an offshore, low-pressure system to move in. Showers are expected along the south coast on Thursday, but a risk of thunderstorms, including dry lightning, could worsen wildfire conditions. Lightning guidance points to an elevated dry lightning risk on Thursday.
By Saturday, a trough will bring cooler, more unsettled weather to the region, with widespread showers and thunderstorms expected throughout the weekend, especially along the coast. Central and northern B.C. can expect beneficial rain into next week.
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Residents should remain vigilant about heat-related risks, including heat stroke and heat exhaustion, and stay alert for wildfire updates and air quality advisories.
Stay with The Weather Network for all the latest on conditions across British Columbia