12+ hour, 31+ min ago  (29+ words) Space Weather Prediction Center GOES Solar Ultraviolet Imager ACE Mag and SWEPAM D Region Absorption Prediction Space Weather Prediction Center325 Broadway, Boulder CO 80305 About NOAA's National Weather Service...

4+ day, 16+ hour ago  (399+ words) Space Weather. gov Galactic Cosmic Rays (GCR) are the slowly varying, highly energetic background source of energetic particles that constantly bombard Earth. GCR originate outside the solar system and are likely formed by explosive events such as supernova. These highly…...

1+ week, 5+ day ago  (66+ words) G2 Warning for 04 May 2026 Space Weather. gov Space Weather Prediction Center A G2 Warning was issued through 23: 59 UTC on 04 May due to the passage of a magnetic transient likely associated with an eruption that left the Sun on 30 April. A G2 Alert was…...

3+ week, 2+ day ago  (57+ words) Space Weather. gov Space Weather Prediction Center X2. 5 flare (R3-Strong) observed at 24/0813 UTC from near NW solar limb. Appears to originate just NW of active Region 4419. Monitor our webpage for updates. Space Weather Prediction Center325 Broadway, Boulder CO 80305 About NOAA's National Weather…...

1+ mon, 2+ day ago  (48+ words) Space Weather. gov Space Weather Prediction Center G2 (Moderate) geomagnetic storm watches have been issued for 17-18 Apr, 2026 due to anticipated CH HSS effects. Space Weather Prediction Center 325 Broadway, Boulder CO 80305 About NOAA's National Weather Service...

1+ mon, 2+ week ago  (24+ words) Space Weather. gov Space Weather Prediction Center Space Weather Prediction Center 325 Broadway, Boulder CO 80305 About NOAA's National Weather Service...

1+ mon, 2+ week ago  (90+ words) Space Weather. gov Aurora Timeline Viewer Product Unavailable Until Further Notice While the Aurora Timeline Viewer Product is unavailable, please refer to the official and operational 3-Day Forecast. By comparing the forecast Kp value in the geomagnetic forecast section of…...

1+ mon, 2+ week ago  (142+ words) Space Weather. gov G2-G1 Watches for Mar 31-Apr 02 UTC-Day A fairly fast coronal mass ejection (CME) erupted from the Sun late on March 29th (Eastern Time). The CME was associated with an X1. 4 solar flare (R3-Strong) from Region 4405 in the southeast quadrant of…...

1+ mon, 2+ week ago  (134+ words) Space Weather. gov G2 Watch for March 31st UTC-Day A fairly fast coronal mass ejection (CME) erupted from the Sun late on March 29th (Eastern Time). The CME was associated with an X1. 4 solar flare (R3-Strong) from Region 4405 in the southeast quadrant of the…...

1+ mon, 3+ week ago  (75+ words) Space Weather. gov Space Weather Prediction Center A G2 (Moderate) geomagnetic storm watch is in place for March as CME influences from the past 24 hours begin to wane, but are followed by the onset of a recurrent coronal hole high speed…...