What is a gust front?
Suppose you have a cluster of storms producing heavy rain, like we saw this morning.
When that rain falls, it brings wind with it. That wind hits the ground and has to go somewhere, so it moves away from the storm. And because there is rain-cooled air in the storm, what we get is rain-cooled air moving along the surface and away from the parent storm.
Hot Wednesday & Thursday — Rain & Storms Very Late Thursday Into Friday — Clearing Late Friday — Chilly Saturday
Today – Abnormally Hot – High 89°
Fresh off the 3rd driest September, also the 10th driest month ever (since records were being kept in 1871), today marks the first day of October. So how about 10° above the normal? The culprit is a ridge of high pressure sending in warm air on a southwesterly flow (“flow” means wind). The satellite water vapor image below shows the southwesterly flow (red arrow) and a trough of low pressure, coupled with a cold front (blue arrow) moving eastward.
