G3 - Strong Geomagnetic Storm Levels were reached at 1746 UTC (1346 ET) on 17 Aug 2024 due to influence from the CME associated with the X flare that left the Sun on August 14th. Stay tuned to our website at swpc.noaa.gov for updates.

EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1914 Valid From: 2024 Aug 17 1600 UTC Now Valid Until: 2024 Aug 18 1200 UTC Warning Condition: Persistence Issue Time: 2024 Aug 17 2355 UTC bit.ly/3wVgAKH

CANCEL WATCH: Geomagnetic Storm Category G1 Predicted Cancel Serial Number: 1009 Original Issue Time: 2024 Aug 15 1358 UTC Comment: Current conditions no longer warrent this Watch. Issue Time: 2024 Aug 18 1346 UTC 2024 Aug 15 1358 UTC bit.ly/3wVgAKH

Saturday, 17 Aug, observed G3 (Strong) levels briefly in response to a CME arrival. Conditions quickly weakened as CME passage passed over and beyond Earth. Flare activity continued as well. Visit swpc.noaa.gov for the latest forecasts and information.

ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2024 Aug 21 2207 UTC NOAA Scale: R2 - Moderate Issue Time: 2024 Aug 21 2211 UTC bit.ly/3wVgAKH

R1-R2 (Minor-Moderate) solar flare events remain probable through the weekend (Aug 23-25th EDT). Many sunspot groups are present as solar cycle 25 continues. Please visit swpc.noaa.gov for the latest information, forecasts, and updates and stay space weather ready.

ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2024 Aug 23 2012 UTC NOAA Scale: R2 - Moderate Issue Time: 2024 Aug 23 2020 UTC bit.ly/3wVgAKH

NOAA shares first data from GOES-19 Magnetometer: nesdis.noaa.gov/news/noaa-shar… SWPC has also released an experimental version of the Global Total Electron Content (GloTEC) ionospheric model. Visit swpc.noaa.gov/experimental/g… to learn more!

WARNING: Geomagnetic K-index of 5 expected Valid From: 2024 Aug 28 0133 UTC Valid To: 2024 Aug 28 0900 UTC Warning Condition: Onset NOAA Scale: G1 - Minor Issue Time: 2024 Aug 28 0133 UTC bit.ly/3wVgAKH

WARNING: Geomagnetic K-Index of 6 expected Valid From: 2024 Aug 28 0223 UTC Valid To: 2024 Aug 28 0900 UTC Warning Condition: Onset NOAA Scale: G2 - Moderate Issue Time: 2024 Aug 28 0223 UTC bit.ly/3wVgAKH

G2 (Moderate) geomagnetic storm levels were observed at 28/0259 UTC (10:59 Eastern) due to persistent CME effects.

EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1916 Valid From: 2024 Aug 28 0133 UTC Now Valid Until: 2024 Aug 28 1800 UTC Warning Condition: Persistence Issue Time: 2024 Aug 28 0732 UTC bit.ly/3wVgAKH

WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Aug 29: G1 (Minor) Aug 30: None (Below G1) Aug 31: None (Below G1) Issue Time: 2024 Aug 28 2113 UTC bit.ly/3wVgAKH

WARNING: Geomagnetic K-index of 5 expected Valid From: 2024 Aug 30 2335 UTC Valid To: 2024 Aug 31 0900 UTC Warning Condition: Onset NOAA Scale: G1 - Minor Issue Time: 2024 Aug 30 2334 UTC bit.ly/3wVgAKH

EXTENDED WARNING: Geomagnetic K-index of 5 expected Extension to Serial Number: 1918 Valid From: 2024 Aug 30 2335 UTC Now Valid Until: 2024 Aug 31 1500 UTC Warning Condition: Persistence Issue Time: 2024 Aug 31 0856 UTC bit.ly/3wVgAKH

WARNING: Geomagnetic K-index of 5 expected Valid From: 2024 Aug 31 1612 UTC Valid To: 2024 Aug 31 2100 UTC Warning Condition: Onset NOAA Scale: G1 - Minor Issue Time: 2024 Aug 31 1615 UTC bit.ly/3wVgAKH

ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2024 Sep 01 1300 UTC NOAA Scale: R2 - Moderate Issue Time: 2024 Sep 01 1303 UTC bit.ly/3wVgAKH

Check out these images of an explosive R2 (Moderate) level flare along the solar limb & associated CME - (courtesy of jhelioviewer). This event was quite energetic & led to the creation of a rare loop prominence system. Solar cycle 25 continues to impress!

Quite energetic coronal mass ejections (CME) departed the Sun 1-3 September; however, they are not Earth-directed. Visit swpc.noaa.gov for the latest information, forecasts, and updates.

WARNING: Geomagnetic K-index of 5 expected Valid From: 2024 Sep 04 1043 UTC Valid To: 2024 Sep 04 1800 UTC Warning Condition: Onset NOAA Scale: G1 - Minor Issue Time: 2024 Sep 04 1043 UTC bit.ly/3wVgAKH