It is common as a warm front passes over an area with significant snowpack.
These conditions commonly occur at the leading edge of a warm front.
A warm front has come up from the south.
The doorman told him a warm front was headed this way.
They are generally seen when a warm or occluded front is approaching.
Meteorologists were trying to figure out if the warm front would move into Illinois that afternoon.
It was March, and a warm front had brought a premature hope of spring.
The day started off on an active note with the warm front moving northwards.
Basically, it became a part of a warm front from the south.
Cliff called after him that there was a warm front associated with the depression.
