An M2.6 solar flare along with a prominence eruption off the southwest limb on Tuesday morning. Image by GOES-19 SUVI. SolarHam.com
30.09.2025 10:01 — 👍 68 🔁 9 💬 0 📌 3
Active to Minor (G1) storm conditions is being observed on Monday thanks to an enhanced solar wind stream containing a long sector of southward Bz. Aurora sky watchers at high latitudes should be alert if it is dark outside.
29.09.2025 15:48 — 👍 31 🔁 8 💬 1 📌 0
A moderately strong M6.4 solar flare was detected this morning around AR 4232 at 08:43 UTC (Sept 28). So far the event does not look to be the source of an Earth directed CME. Image by SDO/AIA.
28.09.2025 10:12 — 👍 57 🔁 14 💬 0 📌 0
A large prominence is currently liftoff near the northeast limb. Image by GOES-19 SUVI. SolarHam.com
21.09.2025 22:23 — 👍 88 🔁 14 💬 2 📌 5
Strong G3 geomagnetic storm threshold reached at 02:59 UTC (Sept 15). SolarHam.com
15.09.2025 03:46 — 👍 58 🔁 9 💬 1 📌 0
Geomagnetic K-Index of 6 expected
Valid From: 2025 Sep 15 0055 UTC
Valid To: 2025 Sep 15 0900 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
SolarHam.com
15.09.2025 01:05 — 👍 35 🔁 14 💬 0 📌 2
Coronal hole stream now moving past Earth around 600 km/s. Minor (G1) geomagnetic storm currently in progress. SolarHam.com
15.09.2025 00:06 — 👍 29 🔁 7 💬 0 📌 2
A minor (G1) geomagnetic storm watch was just officially added by NOAA/SWPC beginning Sept 14th when the expected coronal hole stream is predicted to reach Earth. SolarHam.com
13.09.2025 15:01 — 👍 28 🔁 10 💬 1 📌 1
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11.09.2025 23:00 — 👍 20 🔁 8 💬 0 📌 0
An eruption was observed today following an event that took place behind the west limb around 12:25 UTC (Sept 9). STEREO Ahead (COR2) captured this coronal mass ejection (CME) leaving the Sun and because it is farsided, it will be directed away from Earth. SolarHam.com
09.09.2025 15:08 — 👍 41 🔁 6 💬 0 📌 1
A coronal hole stream is now moving past Earth above 650 km/s. A minor (G1) geomagnetic storm watch remains in effect. Aurora sky watchers at higher latitudes should be alert during the next 24-48 hours. SolarHam.com
06.09.2025 15:37 — 👍 40 🔁 8 💬 1 📌 1
Bz component of the interplanetary magnetic field (IMF) currently shifted to the south. This could reintensify geomagnetic activity in the short term. SolarHam.com
02.09.2025 17:06 — 👍 15 🔁 4 💬 0 📌 1
A moderate (G2) geomagnetic storm is now in progress.
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025 Sep 01 2236 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
01.09.2025 22:51 — 👍 16 🔁 4 💬 0 📌 1
Incoming CME detected by ACE spacecraft just before 20:30 UTC. The solar wind speed increased from around 400 km/s to near 650 km/s. A passage past Earth should be expected within the next hour. Stay tuned to solarham.com for the latest information.
01.09.2025 20:41 — 👍 33 🔁 5 💬 0 📌 2
The latest EPAM update at 20:01 UTC (9/1). is showing a spike in particle levels meaning the CME that left the Sun on Saturday is getting closer. Stay tuned for updates.
01.09.2025 20:16 — 👍 37 🔁 5 💬 2 📌 0
Initial CME tracking model issued by NASA shows a directed CME impact by late Sept. 1 or early Sept. 2 UTC. Further update will be added once the official NOAA/SWPC model is available.
31.08.2025 01:10 — 👍 34 🔁 11 💬 0 📌 1
A new look at the halo coronal mass ejection (CME) that is Earth directed, this time by LASCO C2. SolarHam.com
30.08.2025 23:30 — 👍 45 🔁 13 💬 0 📌 1
Incoming coronagraph imagery by GOES-19 CCOR confirms a halo CME is associated with the M2.7 flare and appears to be Earth directed. I would expect a passage past Earth within 48-72 hours and at least a minor (G1) or even a moderate (G2) geomagnetic storm watch to be issued
30.08.2025 22:05 — 👍 34 🔁 8 💬 0 📌 2
Long duration solar flare (M2.7) in progress around AR 4199. A coronal mass ejection may be associated based on coronal dimming evident. More to follow. SolarHam.com
30.08.2025 20:12 — 👍 61 🔁 7 💬 0 📌 0
An eruption well behind the west limb of the Sun was observed beginning around 16:45 UTC (Aug 29). A coronal mass ejection (CME) is associated and will be directed away from Earth. SolarHam.com
29.08.2025 19:25 — 👍 40 🔁 7 💬 2 📌 2
Just in case we needed a reminder of just how small we are here on planet Earth. This is an approximate size comparison to active sunspot region 4197 on August 28, 2025 @ 00:30 UTC. Image by SDO/HMI.
28.08.2025 01:12 — 👍 22 🔁 8 💬 0 📌 1
M4.5 solar flare observed around AR 4197 at 05:54 UTC (Aug 26). Image by SDO/AIA. SolarHam.com
26.08.2025 06:07 — 👍 60 🔁 15 💬 0 📌 1
M3.3 solar flare observed around AR 4199 @ 00:30 UTC (Aug 26). SolarHam.com
26.08.2025 00:50 — 👍 65 🔁 8 💬 0 📌 1
M4.5 solar flare observed around sunspot region turning into view from off the east limb at 05:23 UTC (Aug 25). solarham.com
25.08.2025 05:44 — 👍 19 🔁 5 💬 0 📌 1
The sunspot region that many have been anticipating is now beginning to turn into view from off the east limb. It remains to be seen just how magnetically complex it is and if it still poses a threat for strong solar flares. We will find out more over the next 24 hours.
24.08.2025 21:53 — 👍 71 🔁 13 💬 0 📌 0
A large prominence appears to be in the process of lifting off the northwest limb. Image courtesy of GOES SUVI. SolarHam.com
23.08.2025 12:54 — 👍 23 🔁 5 💬 0 📌 0
Bright, full halo coronal mass ejection emerging on Thursday following a major farsided event, likely a strong solar flare. This is heading away from Earth. Imagery by LASCO C2 / GOES-19.
21.08.2025 09:54 — 👍 16 🔁 7 💬 0 📌 0
A large prominence located off the northeast limb appears to be in the process of lifting off. Image by GOES-19 SUVI. SolarHam.com
20.08.2025 09:47 — 👍 15 🔁 2 💬 0 📌 1
A coronal hole stream is now moving past Earth above 600 km/s. Active geomagnetic conditions (Kp4) is being observed and a watch for minor (G1) geomagnetic storming is in effect for the remainder of today.
19.08.2025 14:55 — 👍 19 🔁 9 💬 0 📌 0
Updated coronagraph imagery following the M4.4 solar flare reveals a westerly directed CME. If there is an Earth directed component, it will be very faint. A final update will be provided once a CME tracking model becomes available. Image by LASCO C2.
05.08.2025 19:28 — 👍 36 🔁 6 💬 0 📌 0
