Viewing archive of Wednesday, 13 September 2023
Geophysical report
Solar and Geophysical Activity Summary 2023 Sep 13 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 256 Issued at 0245Z on 13 Sep 2023 This report is compiled from data received at SWO on 12 SepA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0100 0100 0100 120 0150 0150 0151 170 0323 0324 0324 770 0418 0426 0431 3425 N22E03 M1.9 1b 0647 0707 0719 3423 N17W31 M2.5 2n 0727 0727 0727 170 0747 0747 0747 140 1106 1112 1117 3425 N24W01 C3.6 Sf 190 1956 1956 1958 440
B. Proton Events
None
C. Geomagnetic Activity Summary
Conditions reached major
geomagnetic storm levels with the arrival of a CME.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 154 SSN 141 Afr/Ap 017/025 X-ray Background C1.4 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 6.0e+05 GT 10 MeV 1.8e+04 p/(cm2-ster-day) (GOES-16 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 2.80e+06 e/(cm2-ster-day) (GOES-16 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 1 1 0 2 5 6 3 4 Planetary 2 1 2 3 5 6 3 4
F. Comments
None
All times in UTC
Currently there's no noteworthy space weather
Latest 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
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
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
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 01:45 UTC
Tuesday, 8 April 2025
23:57 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 50GW at 00:44 UTC
22:42 UTC - Solar flare
Moderate M1.57 flare
22:24 UTC - Radio Blackout
Minor R1 radio blackout in progress (≥M1 - current: M1.52)
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 | |
|---|---|
| March 2025 | 134.2 -20.4 |
| April 2025 | 148.6 +14.4 |
| Last 30 days | 137.1 -0.2 |