Viewing archive of Monday, 18 September 2023
Geophysical report
Solar and Geophysical Activity Summary 2023 Sep 18 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 261 Issued at 0245Z on 18 Sep 2023 This report is compiled from data received at SWO on 17 SepA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0022 0022 0022 320 1555 1604 1610 3435 C3.5 II
B. Proton Events
None
C. Geomagnetic Activity Summary
Field conditions were at unsettled
to active levels.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 145 SSN 094 Afr/Ap 014/020 X-ray Background B9.2 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.5e+07 GT 10 MeV 2.3e+04 p/(cm2-ster-day) (GOES-16 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 2.50e+06 e/(cm2-ster-day) (GOES-16 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 3 3 3 3 3 3 3 3 Planetary 4 3 3 3 3 4 4 3
F. Comments
None
All times in UTC
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
NorilskLatest news
Friday, 28 March 2025
X1.1 solar flare
Monday, 24 March 2025
Coronal hole faces Earth
Saturday, 22 March 2025
Strong G3 geomagnetic storm watch for 23 March
Latest forum messages
Sunspot Latitudes at or near Solar Maximum 86AR4048 128Incoming & Unnumbered Active Regions 1678New satellites - Proba-3, PUNCH, SWFO-L1, GOES-U/19 47AR 4054 21
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Latest alerts
08:12 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 76GW at 08:57 UTC
02:00 UTC - Geomagnetic activity
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Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/08 | M1.5 |
| Last geomagnetic storm | 2025/04/06 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
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| March 2025 | 134.2 -20.4 |
| April 2025 | 148.6 +14.4 |
| Last 30 days | 137.1 -0.2 |