9/7 Recap


There’s a lot of ambiguity in the forecasts tonight, no matter who I look at! Lol So here’s the best I can put together based on available information:
We had 1 CME arrive overnight last night, but it was came in gradually until it set up house about 5.00a CDT this morning, raising Solar Wind Speed to about 500 km/sec and causing a couple of Geomagnetic Storms beginning around noon CDT. The Good News is that the CME also kept Electron Saturation suppressed at Low – Moderate levels today. A CH HSS joined the CME about 5.00p CDT today, taking Solar Wind Speed up to ~550 km/sec. Everything else has been calm today: C Class Solar Flares, Proton Saturation at Normal levels.
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We’ve got 3 more CMEs due tomorrow, most likely overnight 9/8-9/9. These CMEs are expected to cause additional Geomagnetic Storms that night, and some forecasts indicate they’ll bring our Solar Wind Speed into the 600+ km/sec range. These CMEs are expected to pass through fairly quickly. We should be back to calm Geomagnetics on 9/9, and Solar Wind Speed is expected to drop into the 400 km/sec range on 9/10. The CMEs should keep Electron Saturation below its Alert Threshold through 9/10. I posted earlier with the Incoming Geomagnetic Storm CDT Timeline, for those who are interested.
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We’ve got 8 Sun Spots facing Earth atm. 6 are incoming, 2 are in the Sun-Earth Line. All of them are currently classified for C Class Solar Flares and there were 4 of those today. We can hope they stay small and calm over the next 3 days. Proton Saturation is steady at Normal levels.
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Solar Flare Conditions
C Class Solar Flares
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Geomagnetic Conditions
HP = 1.3 Average until 9/7 @ 3.00a CDT, then HP = 3.6 Average with some HP = 5 (G1) Geomagnetic Storm periods
HP = 5 (G1) 9/7 @ 11.0a-noon CDT & 4.00p-5.00p CDT
HP = 5 (G1) Geomagnetic Storm Watch
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Solar Wind Conditions
Solar Wind Density ~6.0/cm3 9/6 @ 7.00p CDT, ~12.0/cm3 beginning 11.42p CDT, Variable between 9.45-27.4/cm3 beginning 9/7 @ 2.12a CDT, <9.0/cm3 beginning 7.30p CDT Solar Wind Speed ~350 km/sec 9/6 @ 7.00p CDT, 383 km/sec 9/7 @ 4.21a CDT, Variable between 466-553 km/sec beginning 5.48a CDT, ~55 km/sec @ 8.05p CDT Solar Wind Speed >500 km/sec Warning and Watch
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Electron and Proton Saturation Conditions
Electron Saturation Normal – Moderate
Proton Saturation Normal
Connie Howell