A severe geomagnetic storm has reached G4 (Severe) levels on June 28, 2024. The storm, which began with a geomagnetic K-index of 5, escalated to a K-index of 8, indicating a severe G4 level. The increased geomagnetic activity is attributed to the arrival of a coronal mass ejection (CME) that departed the Sun on June 25, 2024. The storm conditions were first noted to reach G3 (Strong) levels at 9:28 AM EDT and later intensified to G4 levels at 10:18 AM EDT. The NOAA issued multiple warnings and alerts throughout the day, including Serial Numbers 1891, 1892, 156, 108, and 530, highlighting the persistence and onset of the storm. The storm's impact could potentially lead to auroras being visible in southern states.
BREAKING: A severe geomagnetic storm is currently underway, now reaching G4 levels. While the arrival of a "sun burp" was expected today, the impact was predicted to only be mild. This is a surprise. At G4, auroras can spill into southern states...at least on paper.… https://t.co/IWRJsgZaFX
#SpaceWeather Message Code: ALTK08 Serial Number: 40 Issue Time: 2024 Jun 28 1418 UTC ALERT: Geomagnetic K-index of 8, 9- Threshold Reached: 2024 Jun 28 1415 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes NOAA Scale: G4 - Severe https://t.co/hliIoiyVjv
Geomagnetic Storm conditions reached G4 (Severe) levels near 10:18am EDT. https://t.co/8Uhjoa7tUm
Severe G4 geomagnetic storm (Kp8) Threshold Reached: 14:15 UTC Follow live on https://t.co/Zkq26B89Y7 https://t.co/yFmDkgKvKe
G3 storm conditions were reached about 9:28am EDT on 28 Jun. The increased geomagnetic activity was in response to the arrival of a coronal mass ejection (CME) that departed the Sun on 25 Jun. Visit https://t.co/iX0PAVv2vN for the full story. https://t.co/rnbBqLg4lw
#SpaceWeather Message Code: WARK07 Serial Number: 108 Issue Time: 2024 Jun 28 1324 UTC WARNING: Geomagnetic K-index of 7 or greater expected Valid From: 2024 Jun 28 1325 UTC Valid To: 2024 Jun 28 2100 UTC Warning Condition: Onset NOAA Scale: G3 or greater
#Space Weather Message Code: WARK07 Serial Number: 108 Issue Time: 2024 Jun 28 1324 UTC WARNING: Geomagnetic K-index of 7 or greater expected Valid From: 2024 Jun 28 1325 UTC Valid To: 2024 Jun 28 2100 UTC Warning Condition: Onset NOAA Scale: G3 or greater
#SpaceWeather Message Code: ALTK07 Serial Number: 156 Issue Time: 2024 Jun 28 1328 UTC ALERT: Geomagnetic K-index of 7 Threshold Reached: 2024 Jun 28 1327 UTC Synoptic Period: 1200-1500 UTC Active Warning: Yes NOAA Scale: G3 - Strong
EXTENDED WARNING: Geomagnetic K-Index of 6 expected Extension to Serial Number: 530 Valid From: 2024 Jun 28 1135 UTC Now Valid Until: 2024 Jun 28 2100 UTC Warning Condition: Persistence Issue Time: 2024 Jun 28 1335 UTC https://t.co/ZbtuNtIFJC
WARNING: Geomagnetic K-index of 7 or greater expected Valid From: 2024 Jun 28 1325 UTC Valid To: 2024 Jun 28 2100 UTC Warning Condition: Onset NOAA Scale: G3 or greater Issue Time: 2024 Jun 28 1324 UTC https://t.co/ZbtuNtIFJC
EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1892 Valid From: 2024 Jun 28 0150 UTC Now Valid Until: 2024 Jun 28 2100 UTC Warning Condition: Persistence Issue Time: 2024 Jun 28 1136 UTC https://t.co/ZbtuNtIFJC
WARNING: Geomagnetic K-Index of 6 expected Valid From: 2024 Jun 28 1135 UTC Valid To: 2024 Jun 28 1800 UTC Warning Condition: Onset NOAA Scale: G2 - Moderate Issue Time: 2024 Jun 28 1136 UTC https://t.co/ZbtuNtIFJC
EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1891 Valid From: 2024 Jun 28 0150 UTC Now Valid Until: 2024 Jun 28 1500 UTC Warning Condition: Onset Issue Time: 2024 Jun 28 0555 UTC https://t.co/ZbtuNtIFJC
WARNING: Geomagnetic K-index of 5 expected Valid From: 2024 Jun 28 0150 UTC Valid To: 2024 Jun 28 0600 UTC Warning Condition: Onset NOAA Scale: G1 - Minor Issue Time: 2024 Jun 28 0151 UTC https://t.co/ZbtuNtIFJC
WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Jun 27: None (Below G1) Jun 28: G1 (Minor) Jun 29: G1 (Minor) Issue Time: 2024 Jun 26 1106 UTC https://t.co/ZbtuNtIFJC
This is very cool. I'm adding a sceen grab from May 11 2024, the date of our great geomagnetic storm. @RyanVoutilainen @ensembleator @vancity_kapoor @TamithaSkov https://t.co/cQIJi09vww https://t.co/LS0ozEzxGp