Solar Indices  (May 11 @ 00:35 UTC) SFI SSN AREA 223 156 3110 10 14 1430 WWV  |  Flux Data  |  Last 30 Days

3 Day Geomagnetic Forecast May 11 May 12 May 13 8-9 (G5) 6 (G2) 4 (G0) Max Kp M-Lat   55% H-Lat   95% M-Lat   40% H-Lat   80% M-Lat   20% H-Lat   55% Probabilities Latest SWPC Forecast (@ 00:30 + 12:30 UTC)

Geomagnetic Field and Aurora Past 24 Hours:  Storm (G5) Kp-Index  |  A-Indices  |  Magnetometers Auroral Oval Forecast  |  South Pole

CME Tracking 4 Event(s) Logged Cactus  |  GMU Lab Detection

Farside Watch Latest Image  |  JSOC  |  STEREO

X-Rays Current Global D-LAYER Absorption Current Solar Flare Threat C-Flare: 99% M-Flare: 95% X-Flare: 75% Proton: 99% Flare Events (M2+) Past 48 Hours   |   Event Report   |   Top Solar Flares M4.0 3664 M4.5 3664 X2.2 3664 M3.7 3664 X1.1 3664 X3.9 3664 M5.9 3664 X5.8 3664

Visible Sunspot Regions  |   Sunspot Summary   |   SRS (txt) 3664 BGD 3666 A 3667 A 3670 A 3671 A 3672 B

Latest Space Weather News X5.8 Solar Flare May 11, 2024 @ 01:45 UTC (UPDATED) AR 3664 is the gift that just keeps on giving. While everybody around the world has been paying attention to the Extreme (G5) geomagnetic storm and vivid aurora displays, the active sunspot region decided to produce yet another strong solar flare. The latest was an X5.89 event at 01:23 UTC (May 11). Coronal dimming is evident and although the majority of plasma should be directed to the west, an Earth directed component is still very likely. It seems that good nights are ahead if you are an aurora chaser! Click HERE for a video. Extreme (G5) Storm Reached / Widespread Aurora May 10, 2024 @ 21:45 UTC (UPDATED) A severe geomagnetic storm continues with the Kp index nearing the Extreme (G5) storm threshold. Aurora is happening now across many locations even at lower latitudes where it is dark outside. For ham radio operators, 6 meters is currently jam packed with stations working via the aurora with very strong and distorted signals. Antennas to the north! Extreme (G5) Storm: For the first time since the great Halloween Storm of 2003, the Extreme (G5) Geomagnetic Storm threshold has been reached! ALERT: Geomagnetic K-index of 9 Threshold Reached: 2024 May 10 2254 UTC Synoptic Period: 2100-2400 UTC Active Warning: Yes NOAA Scale: G5 - Extreme Have aurora photos you would like to share? Please send to kevin@solarcycle24.com Aurora from Czech Republic courtesy of Martin Pavelek. Thank you for sharing! Severe (G4) Geomagnetic Storm in Progress May 10, 2024 @ 16:50 UTC (UPDATED) One, or perhaps a combination of at least two coronal mass ejections just reached both the ACE and DSCOVR spacecrafts. The solar wind is fairly high nearing 700 km/s. A passage past our planet should take place within the next 45 minutes. Stay tuned. Strong CME Impact: A geomagnetic sudden impulse measuring 108 nT was detected around 17:00 UTC by ground based magnetometers. A geomagnetic storm is already in progress and reached the Severe (G4) threshold. The solar wind speed is above 700 km/s and the Bz component of the interplanetary magnetic field is shifting wildly. More to follow. ALERT: Geomagnetic K-index of 8, 9- Threshold Reached: 2024 May 10 1739 UTC Synoptic Period: 1500-1800 UTC Active Warning: Yes NOAA Scale: G4 - Severe SUMMARY: Geomagnetic Sudden Impulse Observed: 2024 May 10 1645 UTC Deviation: 108 nT Station: Boulder X3.9 Solar Flare / Radiation Storm May 10, 2024 @ 08:50 UTC (UPDATED) The largest solar flare yet produced by AR 3664 was just observed at 06:54 UTC. This X3.9 blast is associated with a Type II radio emission with an estimated velocity of 1248 km/s, along with a 10cm radio burst (TenFlare) measuring 900 SFU and lasting 16 minutes. A coronal mass ejection (CME) is now becoming visible and it appears the main bulk is heading to the west, but there will likely still be an Earth directed component. More to follow. Click HERE for video. Also click HERE for a summary video of the past few days. Radiation Storm: The minor (S1) radiation storm threshold was reached at 13:35 UTC (May 10). This is possibly related to X3.9 flare this morning, or can also be due to a combination of all previous eruptions nearing Earth. Special Space Weather Alert May 10, 2024 @ 01:30 UTC Severe (G4) Geomagnetic Storm Watch For the first time in nearly 20 years, a Severe (G4) geomagnetic storm watch has been issued by NOAA Space Weather Prediction Center. A number of strong solar flares around active sunspot region 3664 was responsible for at least four Earth directed plasma eruptions, better known as coronal mass ejections. They are expected to reach Earth begining late on May 10th and into 11th. The first two observed on May 8th following X1 and M8 solar flares may combine together for an initial first impact. This is expected to be followed up by additional impacts to Earth's geomagnetic field as the weekend moves along. Visible aurora will be likely for locations at middle latitudes should a strong (G3) to severe (G4) storm be observed as forecast. Sky watchers across Scandinavia, Northern Europe, UK, Canada, northern tier USA and Alaska should all be alert. Should a period of severe (G4) storming take place, locations as far south as Texas and California could see aurora on the horizon once dark outside. Other impacts during a severe geomagnetic storm include degraded HF radio propagation, some issues with power systems especially at high latitudes and satellite navigation issues. Please keep in mind that the forecast is subject to change depending on the CME impact strength and timing. Generally speaking, there should be no threat to humans here on our planet. X2.2 Solar Flare and Severe Storm Watch May 9, 2024 @ 09:10 UTC (UPDATED) AR 3664 does it again with a long duration X2.2 solar flare peaking at 09:13 UTC (May 9). Coronal dimming is already evident meaning this flare will likely be the source of a fourth Earth directed CME. The geomagnetic storm watch for this weekend was upgraded to the Severe (G4) level and this latest event could add even more fuel to the storm. Aurora sky watchers even at middle latitudes rejoice, it could be a great weekend! Fourth Halo CME Confirmed: Updated coronagraph imagery following the X2.2 solar flare confirms that a fourth halo CME was produced and appears Earth directed. With now four plasma clouds expected to pass Earth, the chances for a severe geomagnetic storm this weekend just increased. ALERT: Type II Radio Emission Begin Time: 2024 May 09 0902 UTC Estimated Velocity: 1004 km/s Yet Another X-Class Event and CME May 8, 2024 @ 22:20 UTC (UPDATED) And the X-Flares just keep on coming. Big active sunspot region 3664 flared again, this time with a double peak of X1.0 and M9.8. The initial peak was at 21:40 UTC (May 8, 2024). A further update will be provided regarding a possible CME with this latest event. Additional flaring is likely as the region remains magnetically complex. Third Halo CME: Updated coronagraph imagery following the latest flare event around AR 3664 this evening is showing yet another halo coronal mass ejection (CME). This makes at least 3 plasma clouds that appear to be Earth directed. The latest NOAA/SWPC update shows that the first and second CMEs from earlier on Wednesday are expected to combine into one impact on May 10th. This third event may pass Earth as a separate later impact. Perhaps some great news for aurora sky watchers this weekend! Click HERE for video.