In meteorology, a heat burst is a rare atmospheric phenomenon characterized by a sudden, localized increase in air temperature near the Earth's surface.
[2] The parcel descends rapidly, warming due to compression, overshoots its equilibrium level, and reaches the surface, similar to a downburst.
During these times, air-mass thunderstorms tend to generate due to daytime heating and lose their main energy during the evening hours.
[4] Due to the potential temperature increase, heat bursts normally occur at night, though they have also been recorded during the daytime.
The descending air parcel warms at the dry adiabatic lapse rate of approximately 10 °C per 1000 meters (18 °F per 1000 feet) of descent.
Lastly, temperature conversion mixed with a downdraft momentum continues downward until the air reaches the ground.
By studying the archived data, scientists have the ability to determine the beginning, peak, and end of heat burst conditions.
They also concluded that a higher increase in convection develops if a mid-tropospheric lifting mechanism interacts with an elevated moist layer.