| He battled huge updrafts and downdrafts to take Solo Spirit up and over a 6700-metre Andean peak in a manoeuvre so risky he opted to wear a parachute. |
| If downdrafts become localized, they can become violent downward bursts of wind that can overpower or even destroy any aircraft. |
| If a tilt is created in these drafts by wind shear, additional up or downdrafts can occur and this can result in extra cells being formed. |
| At the time, I was looking for software to visualize my 3-D model data of microbursts, severe downdrafts that sometimes descend from thunderstorm clouds. |
| Strong updrafts, downdrafts and eddies develop as the air flows over hills and down valleys. |
| Eventually saturation occurs and precipitation falls and downdrafts occur. |
