Swallow Storm

Swallow Storm is a seasonal natural phenomenon recorded in folk calendars and associated with the migration periods of swallows. It is generally believed to occur at the beginning of April, particularly around April 8, and has been regarded as one of the signs indicating the arrival of spring.

^{Swallow Storm (Generated by Artificial Intelligence)}

In the past, people sought to understand weather patterns and seasonal transitions by observing nature. Communities that adopted collective living developed their own systems of timekeeping through long-term observation of climate changes, animal behavior, winds, and movements in the sky. Over time, this accumulated knowledge evolved into systems known as folk calendars, old wives’ calendars, or storm calendars.

The formation of these calendars was particularly influenced by the long-term observations of fishermen, ship captains, and sailors. Observations of star movements from star calendars were also utilized. Even today, these calendars remain among the traditional sources of knowledge referenced in agriculture and maritime activities.

Seasonal changes in nature and weather events, observed over many years, were given specific names, leading to the emergence of distinct “storms” associated with particular periods. Swallow Storm is one such named event.

In folk calendars, not only strong winds but many natural phenomena are referred to as “storms.” Thus, Swallow Storm is not merely a meteorological event but also a cultural representation of seasonal transition.

According to the folk calendar, Swallow Storm is considered a period beginning on April 7–8 and lasting approximately two days. While slight variations of a few days may occur in some years, it generally aligns with this same timeframe.

Moreover, Swallow Storm occurs twice each year.

• The first occurs in early April, associated with the arrival of swallows in the country.
• The second occurs around October 17, marking the beginning of swallows’ departure from the country.

In this regard, Swallow Storm is regarded not merely as a weather event but as a reflection of migration periods within the folk calendar.

The name Swallow Storm derives from the time of the swallows’ arrival. It is also regarded as an omen heralding the arrival of spring and signaling the beginning of warmer weather. Therefore, its position in the folk calendar carries not only historical value but also cultural significance rooted in seasonal observation.