Notes:
Researchers at NSSL consider basic weather features, including how fronts
behave. As an example of "unusual" frontal behavior, in a field
project in Utah, scientists looked at a front in strong vertical wind shear
moving into a region with dry air at the ground. As precipitation fell
from the upper levels ahead of the front, it evaporated and cooled the
air. Eventually, the air ahead of the front became colder than the air
at the leading edge of the front.