Pollen Forecast: Who Could See Some Relief?

Now Playing

Pollen Forecast: Who Could See Some Relief?

Next Up

Bizarre Scene Following Powerful Tornado

'Somebody Is Losing Everything'

Tornado Rampages Through Louisville

New Look: Major Tornado Damage In Multiple States

Widespread Tornado Devastation In Arkansas Town

The Science Behind Tornado Formation

Why No Two Tornadoes Are Ever The Same

Storms Cause Damage Across South, Midwest

Tornado Watch Vs. A Warning: What To Know

Roads Covered As Memphis Flooding Begins

Hazardous Travel: 4-8 Inches Of Snow, Multiple Crashes In MN

Historic Flooding Possible This Weekend

CSU Forecasts Active Hurricane Season

Severe Weather Looms Over Midwest, South

Navigating Crowds, Timed Entries And More At National Parks This Summer

Dog Saved Moments Before Tornado Levels Kennel

Four Confirmed Tornadoes Rip Through TN

Tornado Tears Through Louisiana Village

Critical Difference Between Tornado Warnings

How To Stay Safe When Tornadoes Threaten Your Area

Sniffle, Sniffle: The Pollen Count In Atlanta Is In Full Force

Cold Front Will Bring Much-Needed Relief To Some

How To Keep Pollen Out Of Your Car

The Best And Worst Weather For Allergy Sufferers