Associate Professor, Meteorology
Widely quoted in the media for his expertise, Walker Ashley is an atmospheric scientist and physical geographer with interests in geophysical hazards and societal interactions, severe storms, applied climatology and meteorology, and the use of geographic information systems in the atmospheric sciences. Ashley’s areas of expertise include:
- The increasing risk of tornado vulnerability due to growing populations and suburban sprawl.
- Nighttime tornadoes – his research has shown they are 2.5 times more likely to be deadly.
- Thunderstorm formation and the ability of large cities to actually influence and even spawn thunderstorms.
- The impact of weather hazards on transportation systems.
- Tornado vulnerability/suburban sprawl
- Nighttime tornadoes
- Effect of urbanization on severe storms
- Weather hazards and transportation impacts
In the News
- In the Eye of the Storm
- Storm Chaser Captures 90 Minutes Of Fury In Northern Illinois
- What if April 9th tornado had taken different path?
- NIU researchers say little-studied hazards of fog, dust and smoke can be killers
- NIU researchers: Cities can spawn more thunderstorms
- Nighttime tornadoes are worst nightmare
- Deadly storms underscore new research finding: Mid-South is most vulnerable region to tornadoes