National Solar Observatory @NatSolarObs

The mission of the National Solar Observatory is to advance knowledge of the Sun, both as an astronomical object and as the dominant external influence on Earth nso.edu [email protected] Joined May 2016

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National Solar Observatory @NatSolarObs

21 hours ago

No additional Earth‑directed CMEs were identified. Helioseismic maps of the far side show no significant active regions likely to rotate into Earth view in the next few days. Data by NSF-NOAA GONG, operated by NSF NSO. CR: Jain/Oien/NSF/GONG/NSO/AURA, with contributions by NOAA

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National Solar Observatory @NatSolarObs

21 hours ago

Multiple CMEs were also observed in coronagraph imagery during this period, a couple of them likely contained Earth‑directed components. The first CME is expected to arrive at Earth between June 29-30 , with a second CME around July 1.

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National Solar Observatory @NatSolarObs

21 hours ago

Solar Activity Report: June 22-28, 2026 ☀️ Activity remained at low levels. The X‑ray flux stayed mostly in the B range from June 22 through midday June 23, rising to the C level for the rest of the week.

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National Solar Observatory @NatSolarObs

a week ago

Helioseismic mapping of the farside indicates a moderate‑sized active region in the southern hemisphere that may rotate into Earth view around June 24. Data by NSF-NOAA GONG, operated by NSF NSO. Additional Credits: Jain/Oien/NSF/GONG/NSO/AURA, with contributions by NOAA. (4/4)

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National Solar Observatory @NatSolarObs

a week ago

June 16 was the least active day of the period, with X‑ray flux remaining mostly below the C level. Several coronal mass ejections were reported, though none had an Earth‑directed component. (3/4)

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National Solar Observatory @NatSolarObs

a week ago

Solar Activity Report June 15-21, 2026 ☀️Activity generally remained at low levels, except for the final two days when several M‑class flares were produced. Only low‑intensity C‑class flares were observed through June 19; activity increased with the arrival of AR  14473. (1/4)

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National Solar Observatory @NatSolarObs

2 weeks ago

At present, both regions exhibit helioseismic signatures consistent with strong far‑side activity. Data by NSF-NOAA GONG, operated by NSF NSO. Additional Credits: Jain/Oien/NSF/GONG/NSO/AURA, with contributions by NOAA.

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National Solar Observatory @NatSolarObs

2 weeks ago

The latest helioseismic mapping of the Sun’s far hemisphere indicates that two strong active regions in the southern hemisphere may rotate into Earth view around June 20-21, provided they maintain or increase their strength over the next few days.

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National Solar Observatory @NatSolarObs

2 weeks ago

As a result, active region 14465 was the most flare‑productive region of the period. A few CMEs were observed, but none contained a significant Earth‑directed component.

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National Solar Observatory @NatSolarObs

2 weeks ago

Additional C‑class activity from the same region included: 💥 June 8: C7.2 and C4.5 flares 💥 June 9: C4.5 flare 💥June 11: Long‑duration C6.7 flare 💥 June 12: C5.2 flare Several low‑intensity C‑class flares were also produced by multiple active regions.

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National Solar Observatory @NatSolarObs

2 weeks ago

Solar Activity Report: June 8–14, 2026 ☀️ Activity during the reporting period remained at low levels, with only C‑class flares observed. The strongest event was an impulsive C9.0 flare from active region 14465 on June 11.

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National Solar Observatory @NatSolarObs

3 weeks ago

Several of the M‑ and X‑class flares were associated with coronal mass ejections (CMEs) that produced minor to moderate geomagnetic activity. Data by NSF-NOAA GONG, operated by NSF NSO. Additional Credits: Jain/Oien/NSF/GONG/NSO/AURA, with contributions by NOAA.

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National Solar Observatory @NatSolarObs

3 weeks ago

Following this peak, activity declined. The strongest events: a C2.6 flare on June 4 and a C4.7 flare on June 5. Activity returned to moderate levels on June 6 with an M1.8 flare from AR 14461. By June 7, conditions settled to low levels with only low‑intensity C‑class flares.

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National Solar Observatory @NatSolarObs

3 weeks ago

Solar Activity Report: June 1-7, 2026. Activity fluctuated from low to high, returning to low during. The quietest day was June 1, marked by isolated low‑intensity C‑class flares; the strongest event that day was a C1.5 flare from AR 14449 in the SW area of the solar disk.

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National Solar Observatory @NatSolarObs

4 weeks ago

🧵 (3/3) Flares of this magnitude are typically associated with coronal mass ejections (CMEs). Sure enough, LASCO C3 coronagraph shows CME signatures for both events!

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National Solar Observatory @NatSolarObs

4 weeks ago

🧵 (2/3) ⏱️ 7:00 UT: A powerful M7.7 class flare peaks. Watch closely right after the flash (flare brightening), you can see dark, filamentary structures snapping away as material erupts. ⏱️ 11:28 UT: The sun follows up with a massive X1.0 class flare.

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National Solar Observatory @NatSolarObs

4 weeks ago

Active Region 14455 just produced several major M- and X-class flares and eruptions! ☀️💥This video shows solar activity during this period as observed by the NSF-NOAA GONG station in El Teide, Canary Islands. 🧵 (1/3)