President Trump pledges help to affected states, cites 36 deaths National Guard deployed to Arkansas Missouri has highest number of fatalities among six states Power outages affect more than 340,000 consumers Some states still under watch for wind and potential tornadoes March 16 (Reuters) - Portions of Pennsylvania,

The death toll from tornadoes and violent storms that ravaged the central and southern United States over the weekend has risen to at least 40 people, with dozens more injured, local authorities said.

Dozens of tornadoes are reported from thunderstorms that lit up the radar from Wisconsin to Mississippi in the early hours Saturday.

The "scale of devastation" in Missouri is "staggering," Gov. Mike Kehoe (R) said Sunday. One of the 17 tornadoes that struck that state left a "debris field" where a house stood previously, Butler County coroner Jim Akers said. "The floor was upside down. We were walking on walls."

At least 26 people have been killed in a monster storm sweeping across much of the U.S. People were killed in tornadoes in Missouri and in a Kansas dust storm.

A powerful storm system that tore across the United States in recent days is poised to move offshore into the Atlantic Monday, but in its wake are devastated communities across multiple states that were hit with violent tornadoes,

Violent tornadoes and high winds have decimated homes, wiped out schools and toppled semitractor-trailers as a monster storm that killed at least 32 people ripped its way across the central and southern U.