Air Mass Storms

I used to ground myself when I saw a forecast of thunderstorm weather. I had an immediate visceral response rooted in memories of growing up in Kansas, seeing vast tornado-spawning squall lines, their blue-green tint indicating they were pregnant with hail. At age 11, I watched a barn across the road explode in one of those storms, flying in pieces across the fields, followed by a barrage of baseball-sized hail. Surely you cant fly when convective weather and thunderstorms are nearby or on the way, can you? Well, Dorothy, sometimes you can. You just need to know what to look for and what to avoid.

Mike Hart

Sunday, June 30, 2019 at 12:00 AM ET

Verified

Key Takeaways:

Air mass thunderstorms, while distinct from frontal systems, are dangerous and require pilots to maintain 10-20 miles separation using visual cues, radar, lightning detection, and weather advisories.
Pilots must be vigilant for fast-building cells, potential for merging, terrain-induced storms, and radar blind spots; dissipating storms are especially hazardous due to outwash, gust fronts, and low-level wind shear.
For optimal safety, pilots should aim for early morning flights and, if necessary, navigate behind dissipating storms while always maintaining a safe distance and never flying through or under a cumulonimbus cloud.

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I used to ground myself when I saw a forecast of thunderstorm weather. I had an immediate visceral response rooted in memories of growing up in Kansas, seeing vast tornado-spawning squall lines, their blue-green tint indicating they were pregnant with hail. At age 11, I watched a barn across the road explode in one of those storms, flying in pieces across the fields, followed by a barrage of baseball-sized hail. Surely you can’t fly when convective weather and thunderstorms are nearby or on the way, can you? Well, Dorothy, sometimes you can. You just need to know what to look for and what to avoid.

Not The Same

Thunderstorms may differ in the ways they form and move, but inside, they are all the same, something to be avoided. Air mass thunderstorms—often called pop-up thunderstorms—behave quite differently from the violent thunderstorm systems of the southern midwest U.S., a region also known as Tornado Alley, the kind associated with frontal passage or super cell formation.