Solar Storm Today Sep 9: Northern Lights Forecast, IST & EDT

Many skywatchers are asking: is there a solar storm today? Yes, a series of coronal mass ejections (CMEs) began impacting Earth on September 8, triggering a G1 (minor) storm that is peaking across the September 9–10, 2026 window. When the first CME hit Earth today, it arrived at 07:30 UTC (1:00 PM IST / 3:30 AM EDT / 8:30 AM BST / 12:30 AM PDT), setting the stage for potential auroral displays across the northern hemisphere.

How Strong Is It? G1 vs G2 vs G3 Explained

As space weather analysts track the geomagnetic storm today, it is vital to understand the official forecasts. The NOAA SWPC official level is a G1 (minor) watch for September 8–9, with a slight chance of escalating to a G2 (moderate) storm. According to EarthSky and NASA's C. Alex Young, there is only a "slight chance" of a G3 geomagnetic storm (Kp 7). It is crucial to note that a G3 level is not confirmed; all current alerts remain in the "watch/forecast/possible" category as the solar wind washes over our planet.

Monitoring the Kp index today reveals the true intensity of the incoming plasma. In the NOAA forecast discussion from 12:30 UTC on September 7, the interplanetary magnetic field (IMF) total strength (Bt) reached 18 nT, while the crucial Bz component dipped southward to −14 nT, allowing solar particles to easily enter Earth's magnetosphere. The solar wind peaked at 434 km/s. For the most accurate real-time data, the live Kp index (retrieved 9 Sept 2026, 10:00 IST) shows Kp 5, firmly establishing the G1 conditions. A coronal hole high-speed stream is also adding to the solar wind, complicating the forecast.

Northern Lights Forecast Tonight: Where the Aurora May Be Visible

If you are hoping to see the northern lights tonight, the astronomical conditions are exceptionally favorable. The moon is currently a thin waning crescent, approaching a new moon on September 11–12 (much like the dark skies preceding the upcoming Harvest Moon). This means evening skies are virtually moon-free, providing the dark canvas necessary for aurora viewing and photography. The official aurora forecast September 9 2026 suggests the auroral oval will expand significantly if the storm hits the G2 or G3 threshold.

Aurora Visibility by Kp Level

It is important to remember that there are no city-level aurora guarantees. Displays are only possible if the Kp index today reaches the specific thresholds outlined above. For instance, should a G3 geomagnetic storm materialize (Kp 7), viewers in London or New York might catch a glimpse on the northern horizon, but at the current confirmed G1 (Kp 5) level, visibility is restricted to much higher latitudes.

Will the Solar Storm Affect India?

Tracking the solar storm India time is crucial for local satellite operators, but the general public has little to fear. The aurora is NOT visible from India during G1–G3 events. Only extreme G4–G5 storms—such as the historic May 10–11, 2024 event—produce red auroras or SAR arcs visible from high-altitude dark sites like Hanle, Ladakh. Realistic solar storm effects on Earth for the Indian subcontinent during this event include minor fluctuations in high-frequency (HF) radio propagation and slight accuracy dips in GPS/NavIC signals. Mobile networks and the national power grid are effectively unaffected at these lower storm scales.

From a space infrastructure perspective, the Indian Space Research Organisation (ISRO) is well-prepared. ISRO's Aditya-L1 observatory, positioned at the Sun-Earth Lagrange Point 1, continuously monitors incoming CMEs and solar wind parameters, providing vital early warnings. Furthermore, ISRO's newest satellite, EOS-05/GISAT-1A, which successfully launched on September 4, 2026, at 2:55 AM IST on the GSLV-F17 rocket, is currently being monitored by ground operators. Spacecraft controllers closely watch storms like this for increased atmospheric drag and surface charging, similar to the safety protocols being readied for the upcoming Gaganyaan missions.

What Caused It: Sunspot AR4524 and the CME Convoy

The reason a CME hit Earth today is due to a highly active region on the solar disk. At least four Earth-directed CMEs were launched from sunspot region AR4524 between September 5 and 6. Notably, a C5.0 flare erupted at 10:31 UTC on September 6, producing a halo CME that was unusually energetic for a C-class flare. Prior to that, an M1.0 flare from sunspot AR4520 on September 5 sent a fast halo CME toward Earth, which also caused an S1 (minor) solar radiation storm. These overlapping plasma clouds combined en route, arriving at Earth early on September 8 and continuing to buffet our magnetic field into September 9.

How to See and Photograph the Aurora Tonight

Photographing the northern lights tonight requires preparation. You must find a dark site away from city light pollution with an unobstructed view of the north horizon. Modern smartphones are incredibly capable of capturing auroras that the naked eye cannot see. Use your phone's dedicated night mode with an exposure time of 5–10 seconds. If you are using a DSLR or mirrorless camera, set your ISO between 1600 and 3200, open your aperture as wide as possible (e.g., f/2.8), and use a sturdy tripod.

Next Aurora Chances: 13–14 September Coronal Hole Stream

Even as the current storm wanes on September 10, more space weather is on the horizon. A coronal-hole high-speed stream is expected to impact Earth around September 13–14, with G1–G2 storming possible. This upcoming event is amplified by the Russell–McPherron equinox effect, a phenomenon where the geometry of Earth's magnetic field aligns with the Sun's magnetic field near the autumnal equinox, creating "cracks" that allow solar wind to enter more easily and boost September storm intensity.

To put this in the context of Solar Cycle 25 in 2026, we have already witnessed a severe G4 storm on January 19–20 following an X1.9 flare (where auroras were photographed as far south as Alabama and Germany), a G3 watch on June 8, and recent G1–G2 watches from August 27–29. The current activity is a standard, yet fascinating, part of solar maximum.

Key dates to watch in the aurora forecast this week include:

• September 9–10 – Peak of the current G1 (slight chance G2) geomagnetic storm caused by the AR4524 CMEs.
• September 11–12 – New Moon phase, providing optimal, completely dark skies for any lingering auroral activity.
• September 13–14 – Arrival of the next coronal-hole high-speed stream, potentially triggering a new G1-G2 storm enhanced by the equinox effect.
• Ongoing Flare Outlook – Solar flare activity remains relatively low, with approximately a 15% chance of M-class flares and a 1% chance of X-class flares in the coming days.

Forecast Updates

As the solar storm today continues to unfold, we highly recommend checking NOAA's 30-minute OVATION map and the live Kp data at spaceweatherlive.com before heading out. We will update this page as NOAA revises the aurora forecast September 9 2026 and beyond.

By Dr. Lars Eriksen, Head of Stellar Astrophysics, Zendar Universe. Reviewed by the Zendar Universe Research Team. Last updated: 9 September 2026 (IST).