Scattered cumulus and patches of stratocumulus clouds may develop, but the sky is almost never overcast.
Scant precipitation falls in scattered showers and variable, mild winds prevail.
The excellent flying weather in these mT source regions commonly extends through the moving air masses some distance from the sources. Cloudiness in the mT air increases with an increase in distance from the source. On flights from Hawaii or from the Azores northward, through northward-moving mT air, stratiform clouds increase. North of a subtropical high. Any mT air that moves northward becomes cooled over the cool ocean surface.