Sun news: Sun increases activity with three M flares

Sun news August 25: Sun increases activity with three M flares

(11 UTC August 23 – 11 UTC August 24)

Today’s top story: Our sun shows increased activity with the production of three M flares during the past 24 hours. The three M flares in mention were sparked by active region AR4513, the largest being an M2.0 at 1:26 UTC on August 25. It seems it is the reawakening of this prolific sunspot region, after a few days of only C flares, this time this guy is not only the only flare producer of the period but grants us with three Ms bringing out from store its potential of a beta-gamma-delta magnetic complexity. Read below all details.

Past 24 hours on the sun

Flare activity: Solar activity returned to moderate levels with the production of three M flares in the past day. The sun fired a total of 15 flares during the period; 3 Ms and 12 C flares.

• Strongest flare: C2.0 from AR4513 at 1:26 UTC on August 25. The event provoked an R1 (minor) radio blackout that affected an area over the Philippine Sea.
• Other M flares: M1.8 at 19:36 UTC on Augusts 24 from AR4513. R1 (minor) over the Pacific Ocean west of Central America. M1.8 flare at 6:40 UTC on August 25. R1 (minor) radio blackout over the Southeast coast of India.
• Lead flare producer: AR4513 was responsible for all 15 flares tracked over the period.

Sunspot regions: Currently the solar disk displays four numbered active regions in its side we see from Earth.

• AR4513 (beta-gamma-delta) reawakening of this active region. Only flare producer of the period, three M flares included.
• AR3515 (alpa) this sunspot region showed stable during the period.
• AR4516 (beta) remained no flare producer despite reporting growth in its trailing.
• AR4517 (beta) continued showing growth in both its leader and trailer spots. Still, it kept no flare producer.

Blasts from the sun? Observers concentrate attention on the three M flares produced by AR4513 during this period. The review is ongoing to find any component Earth-directed of the coronal mass ejections (CMEs) hurled into space during the events.

Past 24 hours in space weather

Solar wind: Speeds averaged low levels through the period, that means background level. No significant space weather to report.

Bt, Bz and magnetic coupling: The interplanetary magnetic field (IMF) stayed weak showing a slight increase at the end of our observation period. The Bz component showed a north orientation during the whole period. That is unfavorable for aurora production.

Earth’s magnetic field: The field was quiet-to-unsettled throughout the period, with Kp values of just 0-3. Aurora sightings privileged  to the far northern auroral zone: Iceland, northern Scandinavia, northern Alaska, and Canada.

What’s ahead? Sun-Earth forecast

Flare activity forecast: Forecasters expect low-to-moderate levels to continue over August 25-26. Today the chance for M-class flares increased to 55% compared to 455 yesterday. The chance for an X-class event also increased from 5% yesterday to 10% today.

Geomagnetic activity forecast:

• August 25-26: Quiet conditions anticipated (Kp 0-2). Background solar wind will prevail with no significant drivers. Aurora sightings are unlikely outside the far northern auroral zone.
• August 27: Late during the day, arrival of fast solar wind from a coronal hole may lift activity to unsettled-to-active levels (Kp 3-4). The chance of G1 (minor) storm intervals (Kp 5) increases as the fast wind arrives. If the stream arrives on schedule, aurora may become visible from Seattle, Minneapolis, Edinburgh, and the Scottish Highlands.
• August 28 (extended outlook): The coronal hole stream is more likely to peak on this day, and solar wind speeds should increase to elevated levels. Forecasters expect unsettled-to-active conditions (Kp 3-4), with a chance of G1 (minor) storm intervals (Kp 5). Aurora watchers across northern Europe, northern Canada and the northern tier of the United States should stay alert for possible displays.

Sun news August 24: Quiet sun, but fast solar winds to come

(11 UTC August 23 – 11 UTC August 24)

Today’s top story: With the Earth-facing solar disk currently quiet, forecasters are looking ahead to a likely round of fast solar wind later this week. The solar wind is streaming from an area of low density in the sun’s outer atmosphere known as a coronal hole, and it should start reaching Earth late on August 26 or, more likely, on August 27. That could open the door for auroras across northerly latitudes, including northern Scotland.

Past 24 hours on the sun

Flare activity: Solar activity remained at low levels. The sun fired 8 C-class flares and 2 B-class events during the period.

• Strongest flare: C3.5 from AR4513 at 22:03 UTC on August 23.
• Lead flare producer: AR4513 was responsible for 7 of the 10 flares tracked over the period.

Sunspot regions: The Earth-facing solar disk displayed four numbered active regions over the past day.

• AR4513 (beta-gamma) remained the most significant region on the disk, and was the source of nearly all the flaring.
• AR4517 (beta) grew in both its leader and trailer spots. Still, it kept a relatively simple magnetic structure.
• AR4508 and AR4514 rotated across the western horizon during the period. AR4514 produced two minor C-class flares before departing the visible disk.
• The remaining two smaller regions on the disk were magnetically simple. Neither showed significant activity.

Blasts from the sun? Observers spotted no Earth-directed coronal mass ejections in available coronagraph imagery during the period.

Past 24 hours in space weather

Solar wind: Speeds declined through the period, dropping to a slow background level.

Bt, Bz and magnetic coupling: The interplanetary magnetic field (IMF) stayed weak. The Bz component varied weakly, with no significant or sustained southward intervals. That is unfavorable for aurora production.

Earth’s magnetic field: The field was quiet throughout the entire period, with Kp values of just 1-2. Aurora sightings stayed confined to the far northern auroral zone: Iceland, northern Scandinavia, northern Alaska, and Canada.

What’s ahead? Sun-Earth forecast

Flare activity forecast: Forecasters expect low levels to continue over August 24-26. Even so, a chance (45%) for M-class flares remains, along with a slight chance (5%) for an X-class event (R3 or greater).

Geomagnetic activity forecast:

• August 24: Quiet conditions are expected (Kp 0-2). Background solar wind will prevail with no significant drivers. Aurora sightings are unlikely outside the far northern auroral zone.
• August 25: Quiet conditions should continue (Kp 0-2). The slow ambient solar wind regime persists, and forecasters anticipate no CME arrivals. Aurora sightings remain unlikely at mid-latitudes.
• August 26: Mostly quiet conditions are expected through much of the day. Then a coronal hole high-speed stream may arrive late, lifting activity to unsettled-to-active levels (Kp 3-4). The chance of G1 (minor) storm intervals (Kp 5) increases as the fast wind arrives. If the stream arrives on schedule, aurora may become visible from Seattle, Minneapolis, Edinburgh, and the Scottish Highlands.
• August 27 (extended outlook): The coronal hole stream is more likely to peak on this day, and solar wind speeds should increase to elevated levels. Forecasters expect unsettled-to-active conditions (Kp 3-4), with a chance of G1 (minor) storm intervals (Kp 5). Aurora watchers across northern Europe, northern Canada and the northern tier of the United States should stay alert for possible displays.

The sun in recent days

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Bottom line: Sun news August 24, 2026: A quiet sun, but fast solar wind from a coronal hole will arrive later this week, potentially bringing auroras to Seattle and Scotland!

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