Articles on Flash floods

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Lightning during a monsoon storm in southern Arizona, Saguaro National Park. Pete Gregoire, NOAA

Monsoons make deserts bloom in the US Southwest, but climate change is making these summer rainfalls more extreme and erratic

Monsoons are weather patterns that bring thunderstorms and heavy rains to hot, dry areas when warm, moist ocean air moves inland. They’re challenging to forecast, especially in a changing climate.
Six-year-old Makai'ryn Terrio, centre, cools off with his brothers as they play in water fountains in Montréal. The city had its hottest August on record. The Canadian Press/Graham Hughes

What climate change means for southern Ontario and Québec

Southern Québec is warming twice as rapidly as the rest of the world due to the progressive loss of snow cover. An average annual warming of 3 C to 6 C is expected by the end of the century.
A downpour or a drizzle: What causes the difference? David Pinzer Photography/Moment via Getty Images

Why does some rain fall harder than other rain?

Some rainstorms drench you in a second, while others drop rain in a nice peaceful drizzle. A meteorologist explains how rainstorms can be so different.

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