The powers that be say this eclipse, which reaches totality around 10:00 PM EST on February 20, will be dramatic. As NASA tell us:
A lunar eclipse happens when the Moon passes through the shadow of Earth. You might expect the Moon to grow even more ashen than usual, but in fact it transforms into an orb of vivid red.
Why red? That is the color of Earth’s shadow.
Consider the following: Most shadows we’re familiar with are black or gray; step outside on a sunny day and look at your own. Earth’s shadow is different because, unlike you, Earth has an atmosphere. The delicate layer of dusty air surrounding our planet reddens and redirects the light of the sun, filling the dark behind Earth with a sunset-red glow. The exact tint–anything from bright orange to blood red is possible–depends on the unpredictable state of the atmosphere at the time of the eclipse. “Only the shadow knows,” says astronomer Jack Horkheimer of the Miami Space Transit Planetarium.
Transiting the shadow’s core takes about an hour. The first hints of red appear around 10 pm EST (7 pm PST), heralding a profusion of coppery hues that roll across the Moon’s surface enveloping every crater, mountain and moon rock, only to fade away again after 11 pm EST (8 pm PST). No special filter or telescope is required to see this spectacular event. It is a bright and leisurely display visible from cities and countryside alike.
While you’re watching, be alert for another color: turquoise. Observers of several recent lunar eclipses have reported a flash of turquoise bracketing the red of totality.
Per this NASA map, all of South America and most of North America will have a good view: