Thunderstorms:

What Pilots Should Do

 

Avoiding thunderstorms is the best policy...

To Avoid:
  • Thunderstorms build and dissipate rapidly, and they also may move rapidly, so don't plan to fly in between thunderstorm radar echoes. 

  • Hail may fall several miles from the cloud, and hazardous turbulence may extend as much as 20 miles from the cloud. Avoid the most intense echoes by at least 20 miles.

  • Never try to fly under the thunderstorm, even if you can see through to the other side, turbulence can be very dangerous.

  • Don't land or take off in the face of a thunderstorm because wind shear or low level turbulence could cause loss of control. 

  • Never try to clear the top of a thunderstorm unless you know your aircraft can handle the altitude requirements: 1,000 feet for every 10 knots of wind speed at the cloud top. 

  • Remember that frequent and vivid lightning indicates a severe thunderstorm.

If you Cannot Avoid:
  • Tighten your safety belts and secure loose objects
  • Plan to fly your course through the storm in a minimum amount of time
  • Penetrate the storm beneath the freezing level
  • Turn on pitot heat, carburetor heat, or jet inlet heat
  • Reduce airspeed to those recommended in your POH for turbulence
  • Turn up cockpit lights to highest intensity to lessen the chance of blindness from lightning
  • Turn off auto pilot
  • Keep your eyes on your instruments
  • Keep power setting stable
  • Keep altitude stable, but do not over control (ride the waves)
  • Don't turn around inside the thunderstorm, keep going straight through, turning causes more stress on the aircraft

Thunderstorms - Causes - Effects - Home