Slide 1 of 13
Signs of Spring
Goodbye winter, with your bitter winds and mounds of snow, and hello spring.
Spring, of course, marks the beginning of warmer weather and longer daylight hours, the blooming of flowers and the budding of leaves.
Here, OurAmazingPlanet takes a look at some of the visible signs that spring has arrived.
Snow MeltingSlide 2 of 13
As spring's start approaches, the snowfall left by winter's storms is melting.
The above image, taken by a NASA satellite, captures the regions around the Mississippi and Ohio Rivers on March 12, 2011, as they have begun to green. The pale blue in the upper right corner is the snow that remains, that just a month prior covered much of the area.Slide 3 of 13
Rivers FloodSlide 4 of 13
As a result of all that melting snow, rivers begin to swell, sometimes causing floods.
Just weeks before this image was taken, the region shown in the above image was a barren brown landscape. Now it has greened, but along with that greening, rivers have bulked up, looking much thicker than they would in the winter.
Snow melt and 12 days of rain filled the region's rivers, then heavy rainstorms swept across the Midwest on Feb. 27 and 28, 2011. The clouds cleared on March 1 to reveal widespread flooding throughout the upper Mississippi basin.
Water is black or dark blue in this image, taken by a NASA satellite, and sediment-laden water or saturated ground is pale blue. Plant-covered land is green, and bare earth is tan-pink.Slide 5 of 13
Leaves BudSlide 6 of 13
The bare tree branches of winter give way to budding green leaves during the spring.
The warming temperature and increased daylight spur the growth of new leaves on trees, causing a burst of green from Earth's plant life that gives the season its signature color.Slide 7 of 13
Monarchs MigratingSlide 8 of 13