After a day of skiing yesterday, I visited Antelope Island State Park today. Antelope Island is a spectacular place, especially in the spring. The grass is just starting to green up, so the next few weeks are prime time for a visit.
Here are some perspectives on todays convection. Orographic convection bubbled over the Wasatch Mountains at about 11 am MDT due to flow over the mountains and/or weak thermal forcing. The accompanying radar shows the weak echoes over the mountains.
|Radar Source: NCAR/RAL|
As the day wore on, the convection became deeper and began to initiate over the lowlands upstream of the Wasatch Mountains. This was our view looking east across Farmington Bay from the Frary Peak trailhead at 1:07 PM MDT. The KMTX radar showed a greater coverage of radar returns upstream of the Wasatch and the weak evidence of wind-parallel banding.
|Radar Source: NCAR RAL|
This process, known as the Wegener–Bergeron–Findeisen Process, is instrumental in the development of a large fraction of the Earth's precipitation. Here's a laboratory demonstration of the process produced by the University of Manchester Centre for Atmospheric Sciences.