September 29, 2023


Meteorite Strewn Field Maps, News, and Reports

Mt. Vernon, Texas, USA

1 min read
Mt. Vernon Strewn Field V3

Mount Vernon, Texas, USA – July 25, 2021, 8:57 PM local time, hundreds of people across Texas, Oklahoma, and Arkansas, witnessed a meteor fireball, heading northeast and ending in a flash above the town of Mt. Vernon, in east Texas.

This was a relatively small event, but it is likely that some fragments reached the ground. Refer to the sections below for details and maps, which you can download to Google Earth.

Entry Date/Time:2021-07-26 01:57 UTC
End Location:10km NE of Mt. Vernon, Texas
Endpoint Coordinates:33.262°N, 95.167°W
Reference Altitude:28.5 km above sea level
Energy / Mass Estimate:< 1 tonne TNT / <50kg
Reference Speed:13 km/s
Bearing:43° NE
Slope:48° from vertical
Estimated Strewn Mass:< 4 kg
Event Links:AMS Event 4002-2021

Video and News

Several videos of the event were captured from various locations across Southern Ontario. NASA cameras also captured this event on a network of calibrated cameras, which were used to calculate the trajectory (NASA videos not shown here).

Dashcam footage from Bartonville, Texas / Credit: © Anand Bellad

Ring Doorbell footage from Carthage, Texas / Credit: © Juliah Bandy

Dashcam footage from Austin, Texas / Credit: © Jeremy Ernst

Search Efforts

This was a small event, but meteorite hunters were quick to descend on the area and begin the search, within 24 hours of atmospheric entry.

You have the best chance of finding fragments in the 10 to 100 gram range. We would recommend searching the southwest end of the strewnfield first.

If you would like to search for for meteorites from this or future events in this region, please join the Facebook group:

Join the Midwest USA Facebook Group

StrewnLAB Search Area

A trajectory has been estimated from the videos above, and this data has been run through the StrewnLAB software to predict a search area. Please download and review the Google Earth files below for detailed maps of the search area.

Mt. Vernon Strewn Field V3
StrewnLAB Predicted Search Area V3

The critical search area, NE of Romal Lake

Weather Data

The weather data below is sourced from weather balloons, and publicly available via NOAA’s Integrated Global Radiosonde Archive (IGRA). This data is downloaded and post-processed by the StrewnLAB algorithm, to account for changing weather patterns and weather balloon drift. The plots have altitude on the y-axis, in kilometers above sea level. The wind speed below 10km has large effect on the drift of meteorites.

There was very little wind at the time of the fall, so meteorite drift would be minimal
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