Solar activity increasing as large active region rotates into view (2025)

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Post navigation G2 geomagnetic storm watch in effect for April 16 following solar filament eruption Solar radiation storm reaches S2 levels, strong M5.6 solar flare erupts from AR 4046 Major X1.1 solar flare erupts near the east limb, large CME produced Earth-directed CME from March 21 triggers G3 – Strong geomagnetic storm watch Long-duration M3.9 solar flare erupts with large CME off west limb Impulsive X2.0 solar flare erupts from the Sun’s northwest limb M7.6 solar flare erupts from Region 3981 CME impacts Earth sparking widespread aurora, G3 – Strong storm Watch in effect for April 16 G2 geomagnetic storm watch in effect for April 16 following solar filament eruption Solar radiation storm reaches S2 levels, strong M5.6 solar flare erupts from AR 4046 S1 – Minor solar radiation storm following X1.1 flare Major X1.1 solar flare erupts near the east limb, large CME produced Large coronal hole facing Earth, G2 – Moderate geomagnetic storm Earth-directed CME from March 21 triggers G3 – Strong geomagnetic storm watch G2 geomagnetic storm watch in effect for April 16 following solar filament eruption Solar radiation storm reaches S2 levels, strong M5.6 solar flare erupts from AR 4046 Major X1.1 solar flare erupts near the east limb, large CME produced Earth-directed CME from March 21 triggers G3 – Strong geomagnetic storm watch Long-duration M3.9 solar flare erupts with large CME off west limb Impulsive X2.0 solar flare erupts from the Sun’s northwest limb M7.6 solar flare erupts from Region 3981 Commenting rules and guidelines Leave a reply Latest articles At least 2 dead in Pittsburgh as severe storms sweep through Northeast and Mid-Atlantic Mount Etna eruption intensifies with lava fountains and ash emissions, Italy Severe thunderstorms forecast for parts of Texas, Oklahoma, and the northeastern U.S. as powerful storm system moves east Tornadoes cause damage in Minnesota and Wisconsin Strong M6.8 earthquake hits Macquarie Island region From the same category G2 geomagnetic storm watch in effect for April 16 following solar filament eruption Solar radiation storm reaches S2 levels, strong M5.6 solar flare erupts from AR 4046 Major X1.1 solar flare erupts near the east limb, large CME produced Earth-directed CME from March 21 triggers G3 – Strong geomagnetic storm watch Most read Major agricultural losses after severe hailstorms hit Romania Strong M6.8 earthquake hits Macquarie Island region Shallow M6.2 earthquake hits off the west coast of South Island, New Zealand Tornadoes cause damage in Minnesota and Wisconsin Severe thunderstorms forecast for parts of Texas, Oklahoma, and the northeastern U.S. as powerful storm system moves east Mount Etna eruption intensifies with lava fountains and ash emissions, Italy At least 2 dead in Pittsburgh as severe storms sweep through Northeast and Mid-Atlantic Floods claim one life in Lawton as severe storms sweep through Oklahoma Study predicts two extreme solar flares stronger than X14.3 during Solar Cycle 25 Very strong M6.3 earthquake hits near the coast of Ecuador Major power outage hits Spain, Portugal and southern France after ‘rare atmospheric phenomenon’ More than 10 tornadoes rip through Texas as severe weather sweeps across central U.S. Severe weather outbreak forecast across Midwest and Upper Midwest on April 28, 2025 Tennis ball-sized hail causes widespread damage near Austin, Texas Over 144 000 livestock lost in devastating Queensland floods, Australia Strong M7.1 earthquake hits Tonga, potential tsunami threat Floods claim one life in Lawton as severe storms sweep through Oklahoma Very strong M6.9 earthquake hits Papua New Guinea, hazardous tsunami waves possible Very strong M6.9 earthquake hits Reykjanes Ridge Level 3 alert issued for Shinmoedake volcano, Japan after 200 tremors in 24 hours Strong M6.0 earthquake strikes off the coast of Kyushu, Japan References

Solar activity

ByTeo Blašković

Solar activity increased on April 29, 2025, with three M-class solar flares recorded during the first half of the UTC day as large Active Region 4079 rotated into Earth’s view. Region 4079, formerly designated AR 4055, underwent significant growth while on the far side of the Sun and is expected to be the primary source of solar activity in the coming days.

Solar activity increasing as large active region rotates into view (1)

Active Region 4079 at 10:45 UTC on April 29, 2025. Credit: NASA SDO/HMI

Active Region 4079, formerly designated AR 4055, is rotating into Earth’s view after undergoing significant growth while on the far side of the Sun. Solar activity increased on April 29, 2025 (UTC), with three M-class flares recorded during the first half of the day, including one from Region 4079. Forecasts suggest that Region 4079 will likely be the primary contributor to notable solar activity in the coming days.

Flaring from Region 4079 started with a C3.2 flare at 21:52 UTC on April 28, followed by C1.7, C1.6, and C3.9 flares before the end of the UTC day. Activity continued into April 29 with a C1.7 at 04:19, a C1.6 at 04:40, and a C2.4 at 04:56 UTC. Flaring then intensified, with an M1.7 flare from Region 4079 at 05:13 UTC, an M1.3 flare from Region 4068 at 10:02 UTC, and an M1.6 flare from Region 4078 at 10:57 UTC.

The last M-class flare before today occurred eight days ago, at 18:37 UTC on April 21, and was classified as M1.9.

Solar activity increasing as large active region rotates into view (2)

There are currently 10 numbered regions on the Earth-facing side of the Sun. The most likely candidates for notable flaring are Region 4070, with a Beta-Gamma magnetic configuration, and the newly numbered Region 4079, classified as Beta.

SWPC forecasters expect low solar activity with a 15% chance of M-class flaring through April 30, increasing to 20% on May 1.

Solar activity increasing as large active region rotates into view (3)
Solar activity increasing as large active region rotates into view (4)

A partial filament eruption centered near S30W30 was observed in SDO AIA 304 imagery beginning at approximately 07:12 UTC on April 28. A subsequent narrow coronal mass ejection (CME) was observed in SOHO LASCO C2 coronagraph imagery at approximately 08:48 UTC. Modeling indicated that the CME missed Earth to the south.

The greater than 2 MeV electron flux reached moderate levels during the 24 hours ending at 00:30 UTC today, while the greater than 10 MeV proton flux remained at background levels.

The greater than 2 MeV electron flux is expected to remain at normal to moderate levels through May 1, while the greater than 10 MeV proton flux is expected to continue at background levels.

Solar wind parameters remained slightly enhanced over the past 24 hours due to the waning influence of a positive polarity coronal hole high speed stream (CH HSS). The total magnetic field strength ranged from 5 to 9 nT. The Bz component was primarily northward, with brief southward deflections reaching -3 to -5 nT. Solar wind speeds gradually decreased from approximately 450 km/s to 375 km/s. Phi was predominantly in a positive solar sector.

Solar activity increasing as large active region rotates into view (5)

A slightly enhanced solar wind environment is expected to persist through April 29, with a return to mostly ambient conditions expected between April 29 and May 1.

The geomagnetic field is expected to remain at mostly quiet to unsettled levels on April 29, with a chance for an isolated active period under the influence of waning positive polarity CH HSS effects. Mostly quiet conditions are forecast from April 30 through May 1.

Teo Blašković

I'm a dedicated researcher, journalist, and editor at The Watchers. With over 20 years of experience in the media industry, I specialize in hard science news, focusing on extreme weather, seismic and volcanic activity, space weather, and astronomy, including near-Earth objects and planetary defense strategies. You can reach me at teo /at/ watchers.news.

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Solar activity increasing as large active region rotates into view (9)

Solar activity increasing as large active region rotates into view (2025)

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