September 25–27, 2026 Free admission & parking · All balloon activities are weather permitting

Weather & updates

37 years of looking up

A rally born from the view

One pilot saw the beauty of flying over Prosser—and imagined a sky shared with many more.

The beginning

A 1991 flight changed the horizon

Balloon pilot Ted Wirch came to Prosser to give his in-laws a balloon ride. From above, he saw the Yakima River, orchards, vineyards, and Horse Heaven Hills—and knew other balloonists should see it too.

At the first official Great Prosser Balloon Rally, eleven hot air balloons graced the sky. Today, the nonprofit event is still run by a small group of dedicated volunteers who work year-round to bring the rally to Prosser.

Historic balloon rally scene near a Prosser vineyard

Historic photo: Dawn Koch

“A small town, a wide valley, and a tradition that asks everyone to look up together.”

Milestones

The story so far

  1. The view that started it

    Ted Wirch’s flight over Prosser sparks the idea of inviting other balloonists.

  2. Eleven balloons

    The first official rally fills the Prosser sky with color.

  3. A community tradition grows

    Sunrise launches, Night Glow, pilots, sponsors, and volunteers become part of rally weekend.

  4. 37th annual rally

    September 25–27, with free admission and parking.

Help write the next chapter

Volunteer, support the rally, or help preserve its archive.

Get involved About the Rally