Scientists can’t know precisely when a volcano is about to erupt, but they can sometimes pick up telltale warning signs.

Snow today with a high of 44 °F (6.7 °C) and a low of 25 °F (-3.9 °C). There is a 56% chance of precipitation. Sleet today with a high of 45 °F (7.2 °C) and a low of 21 °F (-6.1 °C).