Increased Northern Lights Activity Expected For Numerous States This Week
The spectacle of the northern lights could become a lot more intense this week, with predictions indicating that powerful geomagnetic storms may occur. This increase in activity is anticipated to start on Thursday and carry on into Friday, due to the impact of several coronal mass ejections (CMEs) on Earth's magnetic field.
CMEs are essentially streams of incredibly hot gas and magnetic fields that the sun expels following solar flares.
Residents of northern U.S. regions are encouraged to step outside and gaze to the north if the sky is clear as darkness sets in. An 82%-illuminated waning gibbous moon will ascend from the east after midnight, lighting up the night sky, which could obstruct the visibility of faint aurora. If they are visible, here's a guide to capturing the northern lights using a phone.
Intense Northern Lights Predicted For 23 States This Thursday And Friday
Initially, forecasts showed that the most powerful aurora activity was expected on Friday. However, the latest space weather projections suggest that G2 (Moderate) and G3 (Strong) geomagnetic storms are likely in North America on Thursday afternoon and evening, with a possibility of isolated G4 (Severe) conditions during the event's peak at night.
Experts predict that "geomagnetic field conditions are expected to shift quickly from quiet to active, reaching up to G3 (Strong) geomagnetic storming levels mid-to-late on Thursday and continuing into Friday due to multiple CME arrivals."
They also added, "there is a chance for isolated periods of G4 (Severe) geomagnetic storming during the peak of the multi-CME passage over the course of Thursday and Friday."
Significant changes can take place with little notice, and the most accurate forecasts often arrive only 30 minutes before peak activity.
Visible Planetary Alignment Expected After Sunset
Northern Lights Projection: Enhanced Forecast
The improved forecast follows the detection of multiple CMEs directed towards Earth that were ejected from the sun on two consecutive days. When multiple CMEs travel through space close together, they can interact and amplify each other, a phenomenon sometimes referred to as a "cannibal CME."
The latest three-day forecast predicts Kp values reaching 6.33 (G2) between 15:00 and 18:00 UTC on the first day, rising to 6.67 (G3) between 18:00 and 21:00 UTC. These periods correspond to the afternoon and evening across North America, potentially setting the stage for a widespread aurora display after dark.
Exact timings are typically unreliable, and space-weather forecasts often change rapidly. A useful way to see what may soon become visible in North America is to check aurora webcams around the world as darkness falls.
Expert Tips on Photographing The Northern Lights With Your Phone
Predicted Viewing Locations for Tonight's Northern Lights
A G3 geomagnetic storm can push the northern lights well into the northern U.S. If isolated G4 conditions develop, the northern lights could become visible much farther south, down to mid-latitudes, particularly where skies remain clear, and light pollution is low.
The states with the best viewing prospects remain Washington, Idaho, Montana, Wyoming, North Dakota, South Dakota, Minnesota, Wisconsin, Michigan, New York, and Maine. Additional opportunities may extend into Oregon, Nebraska, Iowa, Illinois, Indiana, Ohio, Pennsylvania, Massachusetts, Connecticut, Rhode Island, Vermont, and New Hampshire. "During similar storms in the past, naked-eye auroras have been visible in more than 25 U.S. states."
Aurora watchers should continue monitoring real-time space weather updates because the exact intensity of the display will depend on the orientation of the solar wind's magnetic field as the CME complex arrives.
Understanding Aurora Intensity
Those chasing the aurora often use the Kp index to predict the intensity of a geomagnetic storm, but for aurora displays, the crucial factor will be the orientation of the interplanetary magnetic field within the solar wind. If its north-south component, known as Bz, turns southward (negative Bz), energy from the solar wind can couple much more efficiently with Earth's magnetic field, allowing geomagnetic activity to intensify rapidly. A sustained southward Bz of −5 nT or stronger usually signals an imminent display of aurora.
Observers in northern U.S. states and much of Canada are on the cusp of a seasonal challenge — in the lead-up to the June solstice, nights become very short, with twilight persisting for much of the night. That limits darkness and makes aurora more difficult to see — even if geomagnetic conditions become favorable.
Wishing you clear skies and wide eyes.
The spectacle of the northern lights could become a lot more intense this week, with predictions indicating that powerful geomagnetic storms may occur. This increase in activity is anticipated to start on Thursday and carry on into Friday, due to the impact of several coronal mass ejections (CMEs) on Earth's magnetic field.
CMEs are essentially streams of incredibly hot gas and magnetic fields that the sun expels following solar flares.
Residents of northern U.S. regions are encouraged to step outside and gaze to the north if the sky is clear as darkness sets in. An 82%-illuminated waning gibbous moon will ascend from the east after midnight, lighting up the night sky, which could obstruct the visibility of faint aurora. If they are visible, here's a guide to capturing the northern lights using a phone.
Intense Northern Lights Predicted For 23 States This Thursday And Friday
Initially, forecasts showed that the most powerful aurora activity was expected on Friday. However, the latest space weather projections suggest that G2 (Moderate) and G3 (Strong) geomagnetic storms are likely in North America on Thursday afternoon and evening, with a possibility of isolated G4 (Severe) conditions during the event's peak at night.
Experts predict that "geomagnetic field conditions are expected to shift quickly from quiet to active, reaching up to G3 (Strong) geomagnetic storming levels mid-to-late on Thursday and continuing into Friday due to multiple CME arrivals."
They also added, "there is a chance for isolated periods of G4 (Severe) geomagnetic storming during the peak of the multi-CME passage over the course of Thursday and Friday."
Significant changes can take place with little notice, and the most accurate forecasts often arrive only 30 minutes before peak activity.
Visible Planetary Alignment Expected After Sunset
Northern Lights Projection: Enhanced Forecast
The improved forecast follows the detection of multiple CMEs directed towards Earth that were ejected from the sun on two consecutive days. When multiple CMEs travel through space close together, they can interact and amplify each other, a phenomenon sometimes referred to as a "cannibal CME."
The latest three-day forecast predicts Kp values reaching 6.33 (G2) between 15:00 and 18:00 UTC on the first day, rising to 6.67 (G3) between 18:00 and 21:00 UTC. These periods correspond to the afternoon and evening across North America, potentially setting the stage for a widespread aurora display after dark.
Exact timings are typically unreliable, and space-weather forecasts often change rapidly. A useful way to see what may soon become visible in North America is to check aurora webcams around the world as darkness falls.
Expert Tips on Photographing The Northern Lights With Your Phone
Predicted Viewing Locations for Tonight's Northern Lights
A G3 geomagnetic storm can push the northern lights well into the northern U.S. If isolated G4 conditions develop, the northern lights could become visible much farther south, down to mid-latitudes, particularly where skies remain clear, and light pollution is low.
The states with the best viewing prospects remain Washington, Idaho, Montana, Wyoming, North Dakota, South Dakota, Minnesota, Wisconsin, Michigan, New York, and Maine. Additional opportunities may extend into Oregon, Nebraska, Iowa, Illinois, Indiana, Ohio, Pennsylvania, Massachusetts, Connecticut, Rhode Island, Vermont, and New Hampshire. "During similar storms in the past, naked-eye auroras have been visible in more than 25 U.S. states."
Aurora watchers should continue monitoring real-time space weather updates because the exact intensity of the display will depend on the orientation of the solar wind's magnetic field as the CME complex arrives.
Understanding Aurora Intensity
Those chasing the aurora often use the Kp index to predict the intensity of a geomagnetic storm, but for aurora displays, the crucial factor will be the orientation of the interplanetary magnetic field within the solar wind. If its north-south component, known as Bz, turns southward (negative Bz), energy from the solar wind can couple much more efficiently with Earth's magnetic field, allowing geomagnetic activity to intensify rapidly. A sustained southward Bz of −5 nT or stronger usually signals an imminent display of aurora.
Observers in northern U.S. states and much of Canada are on the cusp of a seasonal challenge — in the lead-up to the June solstice, nights become very short, with twilight persisting for much of the night. That limits darkness and makes aurora more difficult to see — even if geomagnetic conditions become favorable.
Wishing you clear skies and wide eyes.