4/17/2026 by Connie Howell

4/17 p Post
It’s been a long day, y’all, so just really briefly:
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Geomagnetic Storms expected any minute. HP = 5 (G1) tomorrow night should be over in the early morning 4/19, then NOAA’s expecting no higher than HP = 4 through 4/20.
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Solar Wind Speeds expected to exceed 600 km/sec for at least 2 days.
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Electron Saturation expected to cross its Alert Threshold each of the coming 3 days.
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Solar Flare Conditions
C Class Solar Flares
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Geomagnetic Conditions
HP = 0.3 Average until 4/17 @ 1.00p CDT, HP = 3.0 @ 9.00p CDT
HP = 6 (G2) Geomagnetic Storm Watch
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Solar Wind Conditions
Solar Wind Density <7.0/cm3 4/16 @ 7.00p CDT, Variable between 5.98-56.23/cm3 beginning 1.06p CDT, Variable between 13.28-35.25/cm3 beginning 5.51p CDT and continuing to 9.00p CDT
Solar Wind Speed Variable between 280-356 km/sec 4/16 @ 7.00p CDT, ~310 km/sec beginning 4/17 @ 3.42a CDT, ~340 km/sec beginning 7.51a CDT, 314 km/sec @ 3.33p CDT, ~370 km/sec beginning 6.45p CDT, ~360 km/sec beginning 7.30p CDT and continuing to 9.00p CDT
Solar Wind Speed >600 km/sec Watch
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Electron and Proton Saturation Conditions
Electron Saturation ~1K pfu beginning 4/16 @ 8.00a CDT and continuing to 4/17 @ 7.40p CDT
Proton Saturation Normal
Electron Saturation ~1K pfu Watch