Sun news: A fiery prominence from the far side

Sun news June 19: A fiery prominence from the far side

Today’s top story: Departed sunspot region AR4464 is still making its presence felt from the far side of our sun! It continued blasting flares and hurling plasma into space with beautiful jets and prominences, especially the gorgeous jet-like eruption shown above. It was strong enough to show above the southwest horizon, even though AR4464 has been on the far side for more than two days. That is a testament to just how energetic this region remains. Will we see AR4464 return to the Earth-facing disk, after traveling around the sun’s far side? Stay tuned!

Past 24 hours of sun news

(11 UTC June 18 – 11 UTC June 19)

Flare activity

Over the past day, solar activity continued at very low levels. In total, the sun fired 12 flares: 2 C-class (common) and 10 B-class (weak).

• Strongest flare: C2.0 from AR4470 in the northeast at 11:56 UTC on June 18.
• Lead flare producer: An as-yet-unnumbered newcomer in the southeast topped the list. It fired 7 of the 12 flares, more than double its nearest rival.

Sunspot regions

Currently, the Earth-facing solar disk shows just 3 numbered active regions. All three carry stable beta configurations. They are magnetically simple. And the risk of strong flares from the currently numbered regions stays low.

Notably, a newcomer in the southeast is barely showing its nose over the horizon. It has not yet received an official number, but it is already firing flares from the very edge of the southeast limb (edge). One to watch.

Blasts from the sun?

Available coronagraph imagery showed no coronal mass ejections (CMEs) during the period.

Past 24 hours in space weather

Solar wind

Solar wind speeds averaged moderate-low levels throughout the period. Meanwhile, the total interplanetary magnetic field (IMF) started the period at weak levels. Then it gradually increased to moderate levels.

Bz and magnetic coupling

The Bz component pointed southward for the first 16 hours of the period. Then at around 3 UTC this morning, it shifted sharply northward for about 4 hours. At 7:20 UTC it returned southward and remains there at the time of this writing. As always, a southward Bz favors auroral displays.

Earth’s magnetic field

Over the past day, Earth’s magnetic field ranged from quiet to unsettled levels (Kp 1–3). Currently, the Kp index sits just above level 2.

What’s ahead? Sun–Earth forecast

Flare activity forecast

Forecasters expect low-to-very-low levels to continue. M-class (moderate) flare chances showed a slight increase from 10% yesterday to 15% today. And X-class (strong) flare chances remain at just 1%.

But those numbers could shift. The southeast newcomer is already active before even fully rotating into view. And AR4465 retains some potential near the west limb.

Geomagnetic activity forecast

• June 19: Earth’s magnetic field may see an increase to active levels during the rest of today. Fast solar wind from a coronal hole may provoke a slight disturbance. Aurora watchers at high latitudes should stay alert.
• June 20: Active conditions might continue as the fast solar wind from the coronal hole persists. Isolated unsettled-to-active intervals are possible.
• June 21: Expect a return to quiet-to-unsettled conditions as effects from the coronal hole’s fast solar wind start to wane.

Sun news June 18: Sunspot region keeps flaring from the far side

Yesterday we saw the fiery sunspot region AR4464 departing over the southwest horizon. And over the past day, this prolific region continued to fire a string of jets and prominences from the far side. They were large enough to appear over sun’s limb (edge), and several of the eruptions were registered as C and B flares. This region just can’t say goodbye!

Past 24 hours of sun news

(11 UTC June 17 – 11 UTC June 18)

Flare activity

Over the past day we’ve seen a slight increase in flare production, but the overall activity level remained very low, as the majority of the flares produced were B-class (weak). In total, the sun fired 12 flares: 3 C-class (common) and 9 B-class (weak).

• Strongest flare: C2.5 from active region AR4464 in the southwest at 15:06 UTC on June 17.
• Lead flare producer: A newcomer now numbered AR4470 became the lead flare producer of the period as it blasted out 4 flares of the 12. It was shortly followed by AR4464 with 3 flares from the far side.

Sunspot regions

Currently our star shows just 2 numbered active regions on its side we see from Earth. Both are magnetically simple, with stable beta configurations. We have not seen a spotless day since February 2, 2026. Could one be coming soon? Perhaps, although there is a string of sunspot regions on the far side that may appear on the Earth-viewed solar disk in the coming days.

Blasts from the sun?

A couple of coronal mass ejections (CMEs) were observed on available coronagraph imagery during the period. A first CME detected at 0:38 UTC on June 17 was concluded to have an Earth-bound component. An additional CME was registered by LASCO C2 at 1:35 UTC on June 17. Both events are under modeling and analysis. We will bring you further data as soon as it is released.

Past 24 hours in space weather

Solar wind

Solar wind speeds saw a slight increase to moderate-high levels from 12-to-16 UTC on June 17, before dropping back to moderate-low levels for the rest of the period. Meanwhile, the total interplanetary magnetic field (IMF) drew back to weak levels.

Bz and magnetic coupling

The Bz component was oriented south for most of the day. A few northward peaks were seen, but they were weak. As always, a south oriented Bz component favors auroral displays.

Earth’s magnetic field

Over the past day, Earth’s magnetic field remained at quiet levels (Kp 0–2). No geomagnetic storm conditions occurred. Currently, the Kp index sits just above level 1.

Sun news June 17: Fiery sunspot region departs from view

While solar activity dropped to very low levels over the past day, one sunspot region remained fiery. We’re talking about AR4464, which kept firing jets as it made its way out of view over the southwest solar horizon. And just as it reached the edge of the solar disk, it sparked a gorgeous farewell prominence. Bye, AR4464!

Past 24 hours of sun news

(11 UTC June 16 – 11 UTC June 17)

Flare activity

Over the past day, solar activity dropped to very-low levels, as the majority of the flares produced were B-class (weak) flares. In total, the sun fired 8 flares: 2 C-class (common) and 6 B-class (weak).

• Strongest flare: C1.2 from active region AR4465 in the northwest at 5:20 UTC on June 17.
• Lead flare producer: AR4464 was the top flare producer of the period. It blasted 4 flares out of the 8 of the period. It was shortly followed by AR4465 with 3 flares. Today’s lead flare producer has left the building and gone to the far side.

Sunspot regions

4 numbered active regions can be seen from Earth on the solar disk. AR4465 lost its (gamma) magnetic complexity and today it shows a simpler (beta) configuration.  All the rest of the sunspot regions are magnetically simple and relatively inactive.

Blasts from the sun?

No Earth-directed coronal mass ejections (CMEs) observed on available coronagraph imagery during the period.

Past 24 hours in space weather

Solar wind

Solar wind speeds averaged at moderate levels during the period. Meanwhile, the total interplanetary magnetic field (IMF) started to show an increase at 1 UTC on June 17 that lasted until 6 UTC when it started to draw back to weak levels this morning.

Bz and magnetic coupling

The Bz component was oriented north for most of the day. As a result, Earth’s magnetic shield stayed firmly closed and auroral activity stayed suppressed.

Earth’s magnetic field

Over the past day, Earth’s magnetic field continued at quiet levels (Kp 1–2). No geomagnetic storm conditions occurred. Currently, the Kp index sits just above level 1.

Sun news June 16: Gorgeous eruption! Sun-stuff still awaited

Over the past day, we observed a gorgeous eruption of solar material over the southwest solar horizon. Take a look above. Beautiful! Meanwhile, we are still awaiting a possible glancing blow at Earth from a burst of sun-stuff that left the sun on June 12. This could disturb our magnetic field, though forecasters aren’t expecting any geomagnetic storming. Celestial geometry is not helping aurora watchers right now. We are just a few days from the June 2026 solstice, which arrives on Sunday morning. The angle at which Earth sits relative to the sun does not cooperate much for auroral displays this time of year. This effect is the opposite of what occurs during the equinoxes, when a favorable angle boosts aurora chances.

Past 24 hours of sun news

(11 UTC June 15 – 11 UTC June 16)

Flare activity

Over the past day, solar activity remained in a lull at low levels. In total, the sun fired 9 flares: 6 C-class (common) and 3 B-class (weak).

• Strongest flare: C1.9 from an incoming as-yet-unnumbered active region in the northeast at 18:51 UTC on June 15.
• Lead flare producer: This northeast newcomer topped the list. It fired 6 of the 9 events, including the C1.9 peak.

Sunspot regions

Currently, the Earth-facing solar disk shows 5 numbered active regions. AR4465 (beta-gamma) regained a gamma component during the period. The remaining sunspot regions are magnetically simple and relatively inactive.

Blasts from the sun?

Available coronagraph imagery showed no Earth-directed coronal mass ejections (CMEs) during the period. But forecasters continue to track the CME that departed the sun on June 12. It may deliver a glancing blow around June 16–17. A direct hit is not expected. But it could modestly enhance geomagnetic activity upon arrival. No G1 (minor) geomagnetic storms are expected from this event.

Past 24 hours in space weather

Solar wind

Solar wind speeds averaged moderate-low levels during the period. Meanwhile, the total interplanetary magnetic field stayed weak. But it showed a slight increase at the end of the period. That uptick could be an early sign of the approaching CME material.

Bz and magnetic coupling

The Bz component kept shifting between north and south. But the strongest and longest peaks pointed northward. As a result, Earth’s magnetic shield stayed firmly closed and auroral activity stayed suppressed.

Earth’s magnetic field

Over the past day, Earth’s magnetic field continued at quiet levels (Kp 1–2). No geomagnetic storm conditions occurred. Currently, the Kp index sits just above level 1.

Sun news June 15: Sun-stuff could give us a glancing blow tomorrow

The sun has taken a breather over the past 24 hours, with only minor C-class (common) flares sputtering from a handful of small, magnetically simple sunspot regions. But solar activity from a few days ago could soon bring excitement to Earth. A glancing blow from a coronal mass ejection (CME) that left the sun on June 12 could brush Earth tomorrow, potentially lifting geomagnetic activity to active levels.

Past 24 hours of sun news

(11 UTC June 14 – 11 UTC June 15)

Flare activity

Over the past day, solar activity remained at low levels. In total, the sun fired 7 flares: 5 C-class (common) and 2 B-class (weak). No M-class (moderate) or X-class events occurred.

• Strongest flare: C1.7 from AR4464 at 1:50 UTC on June 15.
• Lead flare producer: AR4464 topped the list with 4 of the 7 events. These included the C1.7.

Sunspot regions

The Earth-facing solar disk shows 4 numbered active regions. All are magnetically simple and relatively inactive.

Blasts from the sun?

Available coronagraph imagery showed no Earth-directed coronal mass ejections during the period. But forecasters continue tracking a CME that departed the sun on June 12. It may deliver a glancing blow around June 16–17. A direct hit is not expected. But it could modestly enhance geomagnetic activity upon arrival.

Past 24 hours in space weather

Solar wind

Solar wind speeds reflected the continued but waning influence of a coronal hole high-speed stream. Speeds gradually declined to normal levels over the period. Meanwhile, the total interplanetary magnetic field remained weak.

Bz and magnetic coupling

The Bz component showed no significant southward dips. It remained weak and variable. As a result, Earth’s magnetic shield stayed firmly closed. And aurora activity stayed suppressed.

Earth’s magnetic field

Over the past day, Earth’s magnetic field stayed quiet (Kp 1–2). No geomagnetic storm conditions occurred.

The sun in recent days

Earlier sun images

Sun images from our community

More sun images from our community

We sometimes feature sun images obtained using hydrogen-alpha filters. Read why.

Bottom line: Sun news for June 19, 2026: AR4464 fires another huge prominence from the far side! Meanwhile, a potentially active region is rotating into view.

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