Impressive supercell timelapse captured by storm chaser Reed Timmer

Reed Timmer watching severe storms in Western Nebraska

Reed Timmer catches monsoon convection forming on Colorado's Mt. Evans

Reed Timmer catches tornado touching down near Interstate-80

Reed Timmer intercepts monster tornado in North Dakota, catches it all on camera

Reed Timmer catches snowy Army-Navy game in Philadelphia

Storm chaser Reed Timmer is pelted with hail in Colorado

Reed Timmer chases massive wedge tornado in Kansas

Storm chaser, Reed Timmer, records incredible timelapse of massive haboob in Arizona

Reed Timmer reports on massive surf developing off North Carolina coast

Reed Timmer covers the tornado in Wyoming

Reed Timmer recaps riding through Iowa storm

Reed Timmer spots fire ant raft on swollen, flooded river

Lightning strikes right in front of storm chaser Reed Timmer

Reed Timmer captures incredible footage of rope tornado in Colorado

Reed Timmer begins coverage of Hurricane Irma in Key Largo, Florida

Reed Timmer shows devastation Hurricane Maria caused to El Yunque National Forest in Puerto Rico

Reed Timmer reports on coastal flooding in Massachusetts as storm hits

Reed Timmer reports ice jam flooding causing major damage to surrounding homes

Evolution of the chase with Extreme Meteorologist Reed Timmer: Utah flash floods

Watch: Storm chasers drive through powerful tornado tearing across rural Iowa

WATCH: Here's what it was like inside a tornado in Iowa

Tornado watch issued in Des Moines area

Flash flood emergency expires after torrential rain in New Orleans

Dr Reed Timmer tracks storm damage in Louisiana

Flood risk to transition into more of a tornado risk on Wednesday

Rounds of chilly air blast the Northeast

Threat for severe storms returning from Thursday night into the weekend

A few slowdowns in store, but mostly clear conditions for travel this Tuesday

Pollen levels on the rise across much of the US

Severe storms expected to ramp up as April comes to an end

Hail rips apart South Carolina yards, cars

Supercells lead to severe tornado threat in Alabama

Supercell with Constant Lightning Forms in Illinois

Supercell Hovering Over City in North Dakota, United States

Un orage supercellulaire filmé depuis un avion... magnifique et terrifiant

Supercell Thunderstorms Form Over Montana

Widespread wind damage reported after supercell thunderstorm rips through