Space Weather by SolarHam
@solarham.bsky.social
SolarHam.com is a space weather website launched in 2006 dedicated to providing the latest information about the Sun, including sunspots, solar flares and coronal mass ejections.
Moderate (G2) geomagnetic storm watch now in effect until 06:00 UTC (Jan 3). Bz south at times and solar wind speed around 600 km/s. SolarHam.com
January 2, 2026 at 8:43 PM
Moderate (G2) geomagnetic storm watch now in effect until 06:00 UTC (Jan 3). Bz south at times and solar wind speed around 600 km/s. SolarHam.com
M5.1 solar flare observed around AR 4323 at 01:50 UTC (Dec 27). This region is located within the remains of old regions 4294/4296 last seen earlier in December. solarham.com
December 27, 2025 at 2:06 AM
M5.1 solar flare observed around AR 4323 at 01:50 UTC (Dec 27). This region is located within the remains of old regions 4294/4296 last seen earlier in December. solarham.com
X1.1 solar flare detected around AR 4298 peaking at 05:01 UTC (Dec 8). SolarHam.com
December 8, 2025 at 5:22 AM
X1.1 solar flare detected around AR 4298 peaking at 05:01 UTC (Dec 8). SolarHam.com
A faint halo CME associated with the M8 solar flare on Saturday is Earth directed with a predicted arrival time by December 9th. Moderate (G2) geomagnetic storming will be possible. More to follow in the days ahead. SolarHam.com
December 7, 2025 at 3:50 AM
A faint halo CME associated with the M8 solar flare on Saturday is Earth directed with a predicted arrival time by December 9th. Moderate (G2) geomagnetic storming will be possible. More to follow in the days ahead. SolarHam.com
M8.1 solar flare detected this evening around AR 4299 (ex 4274). A faint, Earth directed CME appears to be associated. More to follow. SolarHam.com
December 6, 2025 at 11:02 PM
M8.1 solar flare detected this evening around AR 4299 (ex 4274). A faint, Earth directed CME appears to be associated. More to follow. SolarHam.com
AR 4300 getting into the action with this M6.0 solar flare detected at 02:50 UTC (Dec 4). SolarHam.com
December 4, 2025 at 3:03 AM
AR 4300 getting into the action with this M6.0 solar flare detected at 02:50 UTC (Dec 4). SolarHam.com
The enhanced solar wind environment has prompted a strong (G3) geomagnetic storm warning which is now in effect until 23:59 UTC (Dec 3). Despite the full moon, aurora sky watchers at higher latitudes should be alert for aurora should local weather conditions allow.
December 3, 2025 at 8:48 PM
The enhanced solar wind environment has prompted a strong (G3) geomagnetic storm warning which is now in effect until 23:59 UTC (Dec 3). Despite the full moon, aurora sky watchers at higher latitudes should be alert for aurora should local weather conditions allow.
AR 4274 is now turning back into view and just produced an X1.9 solar flare at 02:49 UTC (Dec 1). CME likely. SolarHam.com
December 1, 2025 at 3:09 AM
AR 4274 is now turning back into view and just produced an X1.9 solar flare at 02:49 UTC (Dec 1). CME likely. SolarHam.com
A look at big sunspot region 4294 as it rotates into view on Saturday. The region is currently producing occasional M-Flares and is likely a threat for an isolated strong X-Flare. SolarHam.com
November 29, 2025 at 12:30 PM
A look at big sunspot region 4294 as it rotates into view on Saturday. The region is currently producing occasional M-Flares and is likely a threat for an isolated strong X-Flare. SolarHam.com
M5.9 solar flare observed around the soon to be reassigned AR 4294 at 22:22 UTC (Nov 28). SolarHam.com
November 28, 2025 at 10:55 PM
M5.9 solar flare observed around the soon to be reassigned AR 4294 at 22:22 UTC (Nov 28). SolarHam.com
A sizable eruption was just observed beyond the northeast limb beginning around 19:45 UTC (Nov 25). The associated CME will be directed away from Earth. Also note the large filament that is currently anchored in place in the NE quadrant.
November 25, 2025 at 8:34 PM
A sizable eruption was just observed beyond the northeast limb beginning around 19:45 UTC (Nov 25). The associated CME will be directed away from Earth. Also note the large filament that is currently anchored in place in the NE quadrant.
A coronal mass ejection (CME) that includes a faint halo outline is emerging in updated imagery courtesy of GOES-19 CCOR-1. This appears to be related to farsided activity and is not Earth directed. SolarHam.com
November 21, 2025 at 9:29 PM
A coronal mass ejection (CME) that includes a faint halo outline is emerging in updated imagery courtesy of GOES-19 CCOR-1. This appears to be related to farsided activity and is not Earth directed. SolarHam.com
A large prominence is currently located off the north pole region of the Sun and it may be getting ready to liftoff. From end to end it stretches more than 300,000 kilometers. Something to keep an eye on over the next few hours. Image by GOES SUVI.
November 19, 2025 at 9:35 PM
A large prominence is currently located off the north pole region of the Sun and it may be getting ready to liftoff. From end to end it stretches more than 300,000 kilometers. Something to keep an eye on over the next few hours. Image by GOES SUVI.
The solar wind speed increased from 545 km/s to around 650 km/s. There was also a small increase in the strength of the Sun's magnetic field (Bt) and plasma density. This could be a CME glancing blow related to the X4 solar flare early Friday.
November 16, 2025 at 2:02 AM
The solar wind speed increased from 545 km/s to around 650 km/s. There was also a small increase in the strength of the Sun's magnetic field (Bt) and plasma density. This could be a CME glancing blow related to the X4 solar flare early Friday.
The latest event (X4.0 flare) has pushed proton levels streaming past Earth back above the minor (S1) radiation storm threshold. SolarHam.com
November 14, 2025 at 9:43 AM
The latest event (X4.0 flare) has pushed proton levels streaming past Earth back above the minor (S1) radiation storm threshold. SolarHam.com
AR 4274 still has some gas left in the tank. An X4.0 solar flare was just detected at 08:30 UTC (Nov 14). This event is associated with a type II radio emission with an estimated velocity of 15:25 km/s. More to follow.
November 14, 2025 at 8:55 AM
AR 4274 still has some gas left in the tank. An X4.0 solar flare was just detected at 08:30 UTC (Nov 14). This event is associated with a type II radio emission with an estimated velocity of 15:25 km/s. More to follow.
CME associated with the X5.1 solar flare swept past Earth at 19:17 UTC (Nov 12). Solar wind speed appears to be above 800-900 km/s. A severe (G4) geomagnetic storm watch is now in effect. SolarHam.com
November 12, 2025 at 7:56 PM
CME associated with the X5.1 solar flare swept past Earth at 19:17 UTC (Nov 12). Solar wind speed appears to be above 800-900 km/s. A severe (G4) geomagnetic storm watch is now in effect. SolarHam.com
Second incoming CME detected with a much stronger impact. Solar wind now above 700 km/s and Bz/IMF shifted sharply south (-55 nT). Geomagnetic storm warning now in effect.
November 12, 2025 at 12:12 AM
Second incoming CME detected with a much stronger impact. Solar wind now above 700 km/s and Bz/IMF shifted sharply south (-55 nT). Geomagnetic storm warning now in effect.
Severe (G4) geomagnetic storm watch is officially in effect beginning tomorrow November 12th. Fast moving CME from X5.1 flare predicted to pass Earth.
November 11, 2025 at 5:31 PM
Severe (G4) geomagnetic storm watch is officially in effect beginning tomorrow November 12th. Fast moving CME from X5.1 flare predicted to pass Earth.
Bright halo CME heading directly for Earth. Impact will be likely early on November 13th (UTC). Strong (G3) to Severe (G4) geomagnetic storm watch will likely be added. SolarHam.com
November 11, 2025 at 3:03 PM
Bright halo CME heading directly for Earth. Impact will be likely early on November 13th (UTC). Strong (G3) to Severe (G4) geomagnetic storm watch will likely be added. SolarHam.com
X5.1 solar flare around AR 4274. Proton levels are already on the rise. Wide area of coronal dimming evident meaning a large Earth directed CME is likely. SolarHam.com
November 11, 2025 at 10:47 AM
X5.1 solar flare around AR 4274. Proton levels are already on the rise. Wide area of coronal dimming evident meaning a large Earth directed CME is likely. SolarHam.com
Major solar flare in progress.
The latest event is now peaking around the X5 level and the source is AR 4274. More to follow.
The latest event is now peaking around the X5 level and the source is AR 4274. More to follow.
November 11, 2025 at 10:10 AM
Major solar flare in progress.
The latest event is now peaking around the X5 level and the source is AR 4274. More to follow.
The latest event is now peaking around the X5 level and the source is AR 4274. More to follow.
Moderate (G2) to Strong (G3) geomagnetic storm watch in effect for November 11-12. Full details on SolarHam.com
November 10, 2025 at 10:08 PM
Moderate (G2) to Strong (G3) geomagnetic storm watch in effect for November 11-12. Full details on SolarHam.com
AR 4274 is back at it again with an X1.2 solar flare currently in progress (11/10 @ 09:22 UTC) SolarHam.com
November 10, 2025 at 9:30 AM
AR 4274 is back at it again with an X1.2 solar flare currently in progress (11/10 @ 09:22 UTC) SolarHam.com
AR 4274 just produced an X1.7 solar flare peaking at 07:35 UTC (Nov 9). An Earth directed CME will be likely. More to follow. SolarHam.com
November 9, 2025 at 7:58 AM
AR 4274 just produced an X1.7 solar flare peaking at 07:35 UTC (Nov 9). An Earth directed CME will be likely. More to follow. SolarHam.com