NASA records five class X solar flares and predicts geomagnetic storm on Earth in February
Administração Nacional of Aeronáutica and Espaço (NASA) detected an unusual sequence of five high-intensity solar flares between February 1 and 4, 2026. The most powerful of them reached level X8.1, making it one of the strongest recorded in recent years.
Administração Oceânica and Atmosférica Nacional (NOAA) confirmed that part of the ejected material, known as coronal mass ejection (CME), should reach the Earth’s magnetic field between February 5th and 6th. The predicted effects include G1 level geomagnetic storms, considered mild, but capable of generating visible phenomena in several regions of the planet. Especialistas monitor the situation closely to assess possible variations in intensity.
- Radio communications at high frequencies may suffer temporary interference.
- GPS signals have small inaccuracies in polar regions.
- Electrical networks remain stable, without risk of widespread outages.
- Satellites in orbit face minimal increase in atmospheric drag.
What are solar flares
Solar flares occur when complex magnetic fields on the surface of Sol abruptly reorganize and release accumulated energy. Esse process generates intense emissions of electromagnetic radiation in different spectrum bands, including X-rays and extreme ultraviolet. Observatório of Dinâmica Solar (SDO) of Nasa captures these events in real time through specialized instruments.
The classification of eruptions follows a scale that includes categories A, B, C, M and X, the latter being the most powerful. Dentro of class X, higher numbers indicate greater intensity, as observed in recent explosions that ranged from X1.0 to X8.1. Essas variations depend on the complexity of the solar active region responsible for the activity.
Solar region responsible for the activity
The sunspot identified as AR4366 has become the main focus of instability in recent days. Essa region grew rapidly and developed a complex magnetic structure, favoring the occurrence of multiple eruptions within a short interval. Observações indicate that it remained active even after crossing the solar limb.
Satellites such as SDO and SOHO recorded detailed images of the events, highlighting the extremely hot material in bright ultraviolet hues. The recorded sequence represents rare behavior in the current solar cycle 25, which reaches its peak of activity in the middle of the decade. Continuous Monitoramentos help predict new similar episodes.
More on this story: Solar flares cause G3 storm and northern lights can be seen in Illinois and Oregon
Classification of recent eruptions
The five eruptions detected had different levels of intensity. The first recorded X1.0, followed by X8.1, considered the strongest of the period. The others reached X2.8, X1.6 and X1.5, all capable of generating significant coronal mass ejections.
The rating scale combines letters and numbers to indicate power measured in watts per square meter at Terra. Valores above X2 are already considered high, while X8 represents an exceptional event in the context of the current cycle. Dados History shows that explosions of this magnitude occur only a few times a decade.
Geomagnetic Storm Forecast
NOAA has issued a category G1 geomagnetic storm warning for February 5th and 6th. Esse level indicates slight disturbances in the Earth’s magnetic field, sufficient to compress the magnetosphere and allow charged particles to enter. Modelos predictions suggest that the main impact will occur in the polar regions.
Experts use simulations such as the Enlil model to trace the trajectory of coronal mass ejections. The results point to a partial arrival, reducing the likelihood of more intense effects. Atualizações constants adjust forecasts as new data arrives from space observatories.
On the same topic: Geomagnetic storm G3 is expected to hit Earth this Monday
Possibility of northern lights
One of the most visible consequences of intense solar activity involves the formation of auroras at lower latitudes than usual. Partículas energetics interact with atmospheric gases, producing colorful lights in the night sky. Observadores in regions of the northern hemisphere report a higher chance of sightings during the forecast period.
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Countries such as Canadá, Noruega, Suécia and parts of Estados Unidos present favorable conditions for the phenomenon. In the Southern Hemisphere, aurora australis can occur in areas such as southern Austrália and Nova Zelândia. Aplicativos and specialized websites provide ideal times for real-time observation.
Impacts on radio communications
Class X solar flares cause excessive ionization in the upper layer of the Earth’s atmosphere. Essa change absorbs radio waves at high frequencies, causing temporary blackouts in certain regions. Operadores amateur radio and aviation have already recorded interference in transpolar communications.
The duration of these effects varies from minutes to hours, depending on the intensity of the flare. Serviços commercials adjust alternative frequencies to minimize interruptions. Constant Monitoramento allows critical periods to be anticipated and preventive measures adopted.
Effects on navigation systems
Global positioning systems (GPS) rely on signals transmitted from orbiting satellites. Durante geomagnetic storms, variations in the ionosphere introduce calculation errors in location. Esses deviations mainly affect applications that require high precision, such as precision agriculture and aviation.
Automatic corrections in modern receivers reduce the impact on most average users. Autoridades of air traffic maintain additional protocols during periods of high solar activity. Atualizações regular service providers ensure proper functioning.
Learn more: Magnitude 5.7 solar flare increases chances of aurora borealis this week
Monitoring carried out by Nasa
The Observatório of Dinâmica Solar has been operating since 2010 and provides continuous imaging of the Sol in multiple wavelength ranges. Esses data allows us to identify active regions before they develop significant eruptions. Outros instruments, such as the LASCO coronagraph on the SOHO satellite, track coronal mass ejections toward Terra.
Collaboration between international space agencies expands observation coverage. Informações collected feed predictive models that guide alerts issued to the public and critical sectors. Investimentos continuations in space technology improve forecasting ability.
History of similar events
Comparable events have occurred in previous solar cycles, such as the storm of Carrington in 1859, which disrupted telegraph systems around the world. Mais Recently, intense explosions in 2003 caused electrical blackouts in Canadá. Esses episodes serve as a reference for assessing current risks.
Solar cycle 25, which began in 2019, shows higher activity than initial predictions. Registros indicate a gradual increase in the number of sunspots and associated flares. Long-term Estudos help to understand the star’s behavior patterns.
Protection measures for satellites
Satellite operators adopt specific procedures during periods of high solar activity. Aumento of radiation can damage sensitive electronic components in orbit. Manobras Guidance and safety modes reduce exposure to energetic particles.
Space agencies design ships with reinforced armor for long-duration missions. Astronautas at Estação Espacial Internacional follow protocols that include shelter in protected areas. Careful Planejamento minimizes operational risks across the space sector.
