Administração Nacional Oceânica and Atmosférica (NOAA) issued a warning for strong geomagnetic storms that could allow the observation of the aurora borealis in regions north of Estados Unidos. The phenomenon, rare in mid-latitudes, is expected to occur this Thursday, June 4, and Friday, June 5, 2026. Meteorologistas spacecraft track multiple solar disturbances heading towards Terra.
Três coronal mass ejections (CME) and a high-speed solar wind flow combine to increase activity. One of them left on May 30th. Outras X-class eruptions occurred on June 3. The Kp index can reach 8, which indicates severe conditions.
Múltiplas solar ejections converge on Earth’s magnetic field
Sol has shown high activity in recent days. An active region launched class M and X flares. The resulting ejections must interact with the solar wind from a coronal hole. Essa convergence amplifies the expected impact.
Especialistas track the interplanetary magnetic field. Quando the Bz component points to the south, the connection with the magnetosphere of Terra strengthens. Satélites like NOAA’s DSCOVR measures solar wind speed and intensity in real time. Peak warning usually arrives just 30 minutes in advance.
The forecast indicates G3 level storms, with an isolated possibility of G4. Esse threshold allows charged particles to penetrate deeper into the atmosphere.
Estados with chance to observe the Northern Lights
- Washington, Idaho, Montana, Wyoming, Norte’s Dakota, Sul’s Dakota, Minnesota, Wisconsin, Michigan, Nova York, and Maine have the best conditions in the north.
- Oregon, Nebraska, Iowa, Illinois, Indiana, Ohio, Pensilvânia, Massachusetts, Connecticut, Rhode Island, Vermont, and Nova Hampshire can also record brief views.
- Observadores in the north will see more intense colors on the horizon. Locais further south depends on clear skies and maximum activity.
The list covers 23 states in total. The phenomenon is usually restricted to polar regions.
Desafios for those who want to watch the show
The June solstice approaches. In the northern hemisphere, nights are shorter and twilight is longer. Isso reduces the darkness needed to view faint auroras.
Recomenda – look for points away from light pollution. Aplicativos and real-time monitoring sites help track the solar wind. The activity may come on suddenly and last for minutes. Nuvens or urban lights hinder visibility.
Mesmo with these obstacles, the combined strength of solar perturbations creates a favorable window.
What causes the northern lights
Partículas charged from Sol collide with gases in the Earth’s upper atmosphere. Oxigênio and nitrogen are excited and emit light in shades of green, red and purple. Geomagnetic Tempestades speeds up this process.
The current solar cycle, 25, is near its peak. Períodos with higher activity increases the frequency of events like this. Recent Histórico shows auroras at unexpected latitudes during strong storms.
Como monitor the evolution of the event in real time
NOAA regularly updates forecasts on its space weather portal. Imagens of all-sky cameras in different regions help confirm sightings. Comunidades of observers share photographic records when conditions permit.
Meteorologistas warn that the peak may vary depending on the exact arrival of the ejections. Modelos indicate combined arrival from Thursday afternoon in Costa Leste’s time zone.
The event reinforces the influence of Sol on the space environment close to Terra.