Two daylight fireballs in less than 1 hour on 2025 Asteroid Day!

There are sometimes strange coincicdences! At the same time the 2025 Asteroid Day was organized on Earth (on June 30th, 2025, for the 117th anniversary of Tunguska event), two daylight fireballs were observed and recorded over Minnesota and South Dakota (USA, Event #3620-2025) and the Netherlands (Europe, Event #3621-2025) within an hour !

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First daylight fireball over South Dakota on June 30th, ~15h 05min UT

The first fireball of the two occured over the United States of America (USA, Event #3620-2025) on June 30th, 2025, around 15h 05min UT (10:05 am CDT), less than 4 days after the daylight fireball observed South of Atlanta, that leads to fast meteorites recovery on June 26th! But it was observed further North in the country, most observers being localised in Minnesota, Wisconsin and North and South Dakota (Figure 1). According to analysis of visual reports, the trajectory of the fireball was roughly West-East, close to the triple point between North Dakota, South Dakota and Minnesota (USA).

Figure 1- Heatmap of observers who reported the June 30, 2025, ~15h 05min UT daylight fireball over Northeastern US. The blue arrow is the automatically calculated trajectory of the meteoroid that was at the source of the meteoric event. Credit: AMS, IMO

Second daylight fireball over the Netherlands on June 30th, 15h 57min UT

The second fireball occured less than hour later, on June 30th, 15h 57min UT (17h 57min CEST), over the Netherlands, in Europe (Event #3621-2025). It was observed from the Netherlands, but also from Germany, Belgium and France (Figure 2), and it was also recorded by Luc Baestiaens Allsky7 network camera and Felix Bettonvil daylight fireball monitoring camera (see Figure 3 and below). Thoses recordings show the fireball was fast and short living (less than 1 second). Analysis of visual reports (Figure 2) estimated the trajectory to be North-West to South-East, close to the Dutch shore, North-West of Amsterdam.