Magnitude 4.2 earthquake recorded in Poltava region: details and context

On the afternoon of 22 September 2026, a magnitude 4.2 earthquake (Richter scale) struck the Poltava region of Ukraine. The seismic event was recorded at 12:49:45 Kyiv time in the area of the Machukhivska hromada of Poltava district. This was reported by the Main Directorate of the Hydrometeorological Service / Main Center of Special Control, which is responsible for monitoring seismic activity across the country.

Parameters of the main seismic event

According to the center, the earthquake's hypocenter was located at a depth of approximately 3 kilometers from the surface. The epicenter coordinates were 49.57° north latitude and 34.31° east longitude. The magnitude, determined on the Richter scale, reached 4.2. The Main Center of Special Control classified the recorded event as a "strongly moderate" earthquake. At this magnitude, tremors are usually felt by people near the epicenter, minor damage to fragile structures is possible, but serious destruction and casualties are generally not recorded.

Aftershocks

In addition to the main event, a repeat tremor was recorded the same day in Poltava district. It was registered in the Reshetylivska hromada, with a magnitude of 2.5 on the Richter scale and a hypocenter depth of about 5 kilometers. According to the classification of seismic events, an earthquake of this strength falls into the "barely felt" category: it may be noticed only by individual people, mainly on the upper floors of buildings, while at rest. No reports of damage or emergencies resulting from the repeat tremor were received.

Seismic background in Ukraine in September 2026

The earthquake in the Poltava region was not the only seismic event recorded in Ukraine this month. On 17 September, in the Lviv region, in the Sambir district, tremors were also registered at night at around 01:31 Kyiv time. According to monitoring data, this was already the fourth seismic event recorded on the country's territory since the beginning of September. Experts note that moderate seismic activity in certain regions of Ukraine is periodic in nature and does not indicate the formation of new faults or tectonic anomalies.

Contradictory data

The source materials provided show a minor inconsistency in classification terminology. The Main Center of Special Control classified the magnitude 4.2 earthquake as "strongly moderate," whereas on the generally accepted international scale (MSK/Richter) the range of 4.0–4.9 is usually classified as a "light" earthquake. The difference is probably due to the use of an internal national classification scale employed by the Ukrainian seismological center, and does not indicate any discrepancy in the factual data on magnitude or depth. All four verified sources unanimously confirm the magnitude of 4.2, the time of 12:49:45, and the location in Poltava district. No significant contradictions in the key figures were found between the sources.

Additional context: environmental monitoring

Separately from the seismic event, a temporary deterioration in air quality was recorded in Boyarka, Kyiv region, during the same period, caused by elevated levels of fine particulate matter (PM2.5/PM10). According to environmental monitoring data, fine particulate matter was the main pollutant. Specialists remind that prolonged exposure to elevated dust concentrations can cause breathing discomfort, especially in children, the elderly, and people with heightened sensitivity of the respiratory tract. No direct link has been established between the seismic event in the Poltava region and the change in air quality in the Kyiv region.