Analysis of information sources in references of the Wikipedia article "2021 British Columbia wildfires" in English language version.
southern regions (especially the Interior) received only 30 per cent of their normal June rainfall. Temperatures climbed steadily throughout June, culminating in a historic heat wave...The dryness and extreme heat raised the fire danger to extreme levels...These conditions persisted through the first half of July, making fuels increasingly susceptible to ignition. The volatility of these fuels, in combination with repeated severe thunderstorms and lightning events, contributed to multiple new wildfires, rapid fire growth, and increased rates of spread on existing wildfires.