Do you know snow? Take our quiz on snowmelt and climate change - quiz

Unseasonably patchy snow covers a meadow in Phillips, California, in January. Governor Jerry Brown, in response to a multiyear drought, ordered the first statewide mandatory water restrictions in April.
Photograph: Max Whittaker/REUTERS

Much of the western US is currently on fire, with 55 wildfires burning across the country. In the parched state of California, snowpack stood at just 6% of average by the end of last winter, followed by one of the driest summers on record. How does that translate into diminished water supply and increased fire danger? Test your knowledge below.