6/11 Summary by Connie Howell
Well, the CH HSS arrived today. It raised our Solar Wind Speeds and it caused brief Geomagnetic Storms, but at least Electron Saturation dropped for the day…
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We had C Class Solar Flares today, but we still have an M Class Solar Flare Watch due to 2 Exiting Sun Spots and 1 incoming Sun Spot.
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The expected CH HSS arrived around noon today, causing periodic HP = 5 (G1) Geomagnetic Storms early this afternoon. Those are passed for now, and we’re currently sitting at HP = 4. NOAA’s expecting some more HP = 5 (G1) Geomagnetic Stoms overnight tonight from the CH HSS, and more on 6/12, tomorrow evening, when 2 CMEs from 6/9 & 6/11 arrive in close proximity. The Geomagnetic Storms are expected to continue on and off through late evening 6/13. Middle N. America only has a 15% chance of reaching HP = 6 (G2) levels, but we’ll likely experience HP = 5 (G1) Geomagnetic Storms with a 45% chance. The northern states in the U.S. are more likely (45% chance) to reach HP = 6 (G2) Geomagnetic Storm levels on 6/13. NOAA’s expecting these CMEs to pass over Earth quickly, and that we’ll be out of Geomagnetic Storms on 6/14.
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The CH HSS arrived around 11.30a CDT this morning and took Solar Wind Speeds up to ~500 km/sec mid-afternoon today. With the incoming CMEs, we might be back to the 400 km/sec range on 6/15.
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Electron Saturation mainly stayed below its Alert Threshold today. Electron Saturation might breech its Alert Threshold briefly tomorrow before the CMEs arrive. Proton Saturation stayed below its Alert Threshold.
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Solar Flare Conditions
C Class Solar Flares
M Class Solar Flare Watch
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Geomagnetic Conditions
HP = 3.0 Average
HP = 5 (G1) Geomagnetic Storms 6/11 @ 1.00p-2.00p CDT, 3.00p-4.00p CDT
HP = 5 (G1) Geomagnetic Storm Watch
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Solar Wind Conditions
Solar Wind Density Averaged 8.0/cm3, Peaked ~23.0/cm3 6/11 @ 11.54a-12.06p CDT, <5.0/cm3 beginning 5.00p CDT and continuing to 10.30p CDT Post
Solar Wind Speed ~400 km/sec 6/10 @ 7.00p CDT, 452 km/sec 6/11 @ 12.27p CDT, ~500 km/sec beginning 3.45p CDT and continuing to 10.30p CDT Post
Solar Wind Speed ~500 km/sec Warning
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Electron and Proton Saturation Conditions
Electron Saturation >1K pfu 6/11 @ 3.10p-4.10p CDT
Proton Saturation Normal
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