What weather events are depicted in Antonio Vivaldi’s Summer concerto?

In his Summer concerto (Concerto No. 2 in G Minor), Antonio Vivaldi utilizes program music to depict several intense weather events and atmospheric conditions.1

According to the sonnet accompanying the work, the concerto evokes the following:

• Extreme Heat: The opening movement describes the "merciless sun" under which man and flock languish and pine trees burn.1
• Sudden Winds: A gentle breeze is interrupted when Boreas (the north wind) is suddenly roused to combat.1
• Storms: The music captures the arrival of a "fearsome storm," characterized by lightning and "frightful thunder" that rob the shepherd of his rest.1
• Hail: The final movement depicts the culmination of the storm, where thunder and lightning persist and hail destroys the tall ears of grain.1

These elements are translated directly into the musical score, reflecting Vivaldi's meticulous approach to narrative expression in his famous The Four Seasons collection.1