Chances of a “city-killing” asteroid smashing into the Earth in less than a decade have increased, according to NASA.

The U.S. space agency said the probability of Asteroid 2024 YR4 hitting the Earth in 2032 has grown to 3.1%, or a 1-in-32 chance. Earlier in January, NASA had put the chance of the asteroid impacting Earth on Dec. 22, 2032 at 1%.

“Currently, no other known large asteroids have an impact probability above 1%,” the agency noted.

If the asteroid did hit the Earth, it would do so at some 10.6 miles per second or about 38,028 miles per hour, Forbes reported. Any impact would be the equivalent of around 8 million tons of TNT or about 500 times the power of the atomic bomb dropped on Hiroshima, Japan.

2024 YR4 was first reported on Dec. 27, 2024 to the Minor Planet Center by the NASA-funded Asteroid Terrestrial-impact Last Alert System station in Chile. The asteroid, which is estimated to be about 130 to 300 feet wide, caught astronomers’ attention when it rose on the NASA automated Sentry risk list on Dec. 31, 2024. The Sentry list includes any known near-Earth asteroids that have any probability of impacting Earth in the future.

Large telescopes and cameras around the world are continuing to track Asteroid 2024 YR4 before it fades from view this spring. Experts said the chances the asteroid will hit the Earth will likely decrease as more is learned about its orbit as NASA uses the Mid-InfaRed Instrument, or MIRI, from the James Webb Space Telescope to track data.

“There have been several objects in the past that have risen on the risk list and eventually dropped off as more data have come in. New observations may result in reassignment of this asteroid to 0 as more data come in,” NASA noted.

The asteroid isn’t expected to become visible again until 2028.