skip to main content
skip to newscasts

Monday, February 17, 2025

Public News Service Logo
facebook instagram linkedin reddit youtube twitter
view newscast page
play newscast audioPlay

At Least 11 Dead After Severe Flooding Sweeps The South; Hundreds Of Thousands Without Power; Abandoned Mine Land program frozen as Appalachia faces severe flooding; Solar power gives MN resort new blood, new life.

view newscast page
play newscast audioPlay

Top Trump officials set to meet with Russian officials in Saudi Arabia over the Ukraine war. The GOP budget resolution is at risk as moderates weigh out consequences. New York City Mayor Eric Adams says he's "going nowhere."

view newscast page
play newscast audioPlay

Rural America struggles with opioids and homelessness in unexpected ways, Colorado's Lariat Ditch could help spur local recreation, and book deliveries revive rural communities hit by Hurricane Helene.

Changing climate contributes to record Iowa tornado season

play audio
Play

Monday, July 1, 2024   

Weather researchers at Iowa State University say a shifting climate and warmer ocean temperatures are partially responsible for a record number of tornadoes this spring.

More than 100 were reported in Iowa, in May alone.

Eleven hundred tornadoes were reported regionwide in May -- from Texas to Minnesota, and from West Virginia to Georgia. That's more than twice the 30 year average.

One of the fiercest killed five people and injured dozens in rural Greenfield, Iowa.

ISU Severe Weather Meteorologist and Professor of Meteorology William Gallus said extreme heat from a changing climate has increased ocean temperatures, and is one contributing factor to this year's storms.

"Mexico and Texas were having record high temperatures," said Gallus. "That was allowing the Gulf of Mexico to rapidly warm up, get much warmer than normal, which means that is our main source of energy."

Gallus said the weather pattern known as El Niño -- characterized by warmer ocean temperatures that prompt more precipitation and provide fuel for severe weather -- is now shifting to La Niña, marked by cooler seas and drier weather.

That could cause the rest of the tornado season to be less active.

Gallus said the high number of tornadoes in the region was unusual, since climate change models predict Iowa and neighboring states west of the Mississippi should being seeing below average numbers, which they have in recent years.

"The long-term trend has been for tornadoes to be hitting more places east of the Mississippi River," said Gallus.

Gallus said data show tornadoes occurring on fewer days each year, but coming in clusters and with greater intensity.

He says some storms that have been listed as Category F3 are probably F5's, but measurement methods in some areas are not adequate to gauge the storms' intensity.




get more stories like this via email

more stories
Data from Penn Medicine finds as of January 2024, more than 30,000 people in the U.S. have received CAR T-cell therapy since it was approved for use in 2017. (Roswell Park Comprehensive Cancer Center)

Health and Wellness

play sound

Some New York doctors are working on new ways to treat advanced cancers. Chimeric Antigen Receptor, or CAR, T-cell therapy treats certain blood …


Health and Wellness

play sound

The incidence of drug overdose is decreasing in Indiana and one reason could be the efforts of an organization offering free training to anyone willin…

Social Issues

play sound

By Kim Kobersmith for The Daily Yonder.Broadcast version by Brett Peveto for South Carolina News Service for the Daily Yonder-Public News Service Coll…


More than 48% of Wyoming is public land, owned and managed by the federal government on behalf of U.S. residents. Several state bills this session were written to try to decrease the percentage. (Adobe Stock)

Environment

play sound

Wyoming is one of several Western states where some lawmakers arguing states should have more control of the federally managed public lands within the…

Environment

play sound

By S.E. Smith for Yes! Magazine.Broadcast version by Suzanne Potter for California News Service reporting for the Yes! Magazine-Public News Service …

A home burns in a Los Angeles neighborhood during recent wind-driven wildfires spreading throughout several Southern California communities. (Adobe Stock)

Environment

play sound

By Amy McDermott for the Proceedings of the National Academy of Science.Broadcast version by Mark Richardson for for California News Service reporting…

Social Issues

play sound

February is Library Lovers Month - and libraries across the Commonwealth are encouraging their long-time and new patrons to celebrate. Lisa Varga…

Social Issues

play sound

According to the Immigration Policy Tracking Project, the Trump administration has taken 130 actions on immigration so far this term. Groups in …

 

Phone: 303.448.9105 Toll Free: 888.891.9416 Fax: 208.247.1830 Your trusted member- and audience-supported news source since 1996 Copyright © 2021