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Space Weather by SolarHam @solarham.bsky.social · 9d

An M2.6 solar flare along with a prominence eruption off the southwest limb on Tuesday morning. Image by GOES-19 SUVI. SolarHam.com

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Space Weather by SolarHam @solarham.bsky.social · 10d

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.

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Space Weather by SolarHam @solarham.bsky.social · 11d

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.

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Space Weather by SolarHam @solarham.bsky.social · 18d

A large prominence is currently liftoff near the northeast limb. Image by GOES-19 SUVI. SolarHam.com

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Space Weather by SolarHam @solarham.bsky.social · 25d

Strong G3 geomagnetic storm threshold reached at 02:59 UTC (Sept 15). SolarHam.com

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Space Weather by SolarHam @solarham.bsky.social · 25d

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

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Space Weather by SolarHam @solarham.bsky.social · 25d

Coronal hole stream now moving past Earth around 600 km/s. Minor (G1) geomagnetic storm currently in progress. SolarHam.com

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Space Weather by SolarHam @solarham.bsky.social · 26d

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

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Space Weather by SolarHam @solarham.bsky.social · 28d

After six days of fundraising, I am now 91% to my goal of supporting the website through 2028. Thanks to the 376 amazing people who have made a donation. If you too would like to support my work, please visit the link. Thanks for your support. solarham.com/donate.htm

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Space Weather by SolarHam @solarham.bsky.social · Sep 9

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

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Space Weather by SolarHam @solarham.bsky.social · Sep 6

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

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Space Weather by SolarHam @solarham.bsky.social · Sep 2

Bz component of the interplanetary magnetic field (IMF) currently shifted to the south. This could reintensify geomagnetic activity in the short term. SolarHam.com

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Space Weather by SolarHam @solarham.bsky.social · Sep 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

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Space Weather by SolarHam @solarham.bsky.social · Sep 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.

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Space Weather by SolarHam @solarham.bsky.social · Sep 1

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.

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Space Weather by SolarHam @solarham.bsky.social · Aug 31

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.

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Space Weather by SolarHam @solarham.bsky.social · Aug 30

A new look at the halo coronal mass ejection (CME) that is Earth directed, this time by LASCO C2. SolarHam.com

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Space Weather by SolarHam @solarham.bsky.social · Aug 30

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

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Space Weather by SolarHam @solarham.bsky.social · Aug 30

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

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Space Weather by SolarHam @solarham.bsky.social · Aug 29

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

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Space Weather by SolarHam @solarham.bsky.social · Aug 28

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.

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Space Weather by SolarHam @solarham.bsky.social · Aug 26

M4.5 solar flare observed around AR 4197 at 05:54 UTC (Aug 26). Image by SDO/AIA. SolarHam.com

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Space Weather by SolarHam @solarham.bsky.social · Aug 26

M3.3 solar flare observed around AR 4199 @ 00:30 UTC (Aug 26). SolarHam.com

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Space Weather by SolarHam @solarham.bsky.social · Aug 25

M4.5 solar flare observed around sunspot region turning into view from off the east limb at 05:23 UTC (Aug 25). solarham.com

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Space Weather by SolarHam @solarham.bsky.social · Aug 24

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.

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