Looks like we're seeing the first CME impacts now; a Geomagnetic Sudden Impulse warning has been issued, and G1 (Minor) geomagnetic storm conditions are already being observed. #spaceweather#spacewx#aurora
Geomagnetic storm conditions have immediately reached G3 (Strong) levels, and are expected to intensify further in the next several minutes/hours. — #spaceweather#spacewx#aurora
Here's the magnetometer data from GOES-16 and GOES-18 for the last 3 days, and the last 6 hours — that's one hell of an impulse. #spaceweather#spacewx#aurora
And, because there obviously wasn't enough going on right now, an R1 (Minor) radio blackout is also in progress due to flare activity from AR3664. #spaceweather#spacewx#aurora
S2 (Moderate) solar radiation storm threshold has also been exceeded, with proton flux rapidly increasing at GOES-18. (Looks like we're getting a little of everything today.) #spaceweather#spacewx#aurora
Geomagnetic storm conditions have reached G3 (Strong) levels for the 1800-2100 UTC synoptic period, with a return to G4 (Severe) levels expected again within the next 20-30 minutes. #spaceweather#spacewx#aurora
SWPC uses a 3-hour synoptic period (starting at 0000 UTC) for calculating geomagnetic field disturbances and determining storm levels for forecasts and warnings; values reset when each new synoptic period starts. https://www.swpc.noaa.gov/products/geospace-geomagnetic-activity-plot
Also keeping an eye on yet another long-duration X-ray flare event from AR3664 producing R1 (Minor) radio blackout conditions. #spaceweather#spacewx#aurora
Latest USAF magnetometer analysis report shows G5-equivalent geomagnetic field disturbances at every single station for the 3-hour period from 1600-1900 UTC.
It's looking somewhat possible that this geomagnetic storm event might reach the G5 threshold at some point in the next hour... #spaceweather#spacewx#aurora
NOAA SWPC video of the solar flare that spawned CMEs... Expected to cause some great aurora activity, potential to also cause other mischief (mostly in space/high latitudes). Though it will probably wipe out ham radio too this weekend. #CME#spaceweatherhttps://www.youtube.com/watch?v=-dr2BIlDGDk
On Thursday, May 9, 2024, the NOAA Space Weather Prediction Center issued a Severe (G4) Geomagnetic Storm Watch. At least five earth-directed coronal mass ejections (CMEs) were observed and expected to arrive as early as midday Friday, May 10, 2024, and persist through Sunday, May 12, 2024. Several strong flares have been observed over the past few days and were associated with a large and magnetically complex sunspot cluster (NOAA region 3664), which is 16 times the diameter of Earth.