Viewing archive of Thursday, 17 January 2002
Geophysical report
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Solar and Geophysical Activity Summary 2002 Jan 17 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 017 Issued at 0245Z on 17 Jan 2002 This report is compiled from data received at SWO on 16 JanA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0149 0150 0203 9775 S08W79 Sf 220 0550 0550 0550 290 1005 1013 1018 9775 S05W75 M1.5 Sf 1320 1320 1320 130
B. Proton Events
A greater than 10 MeV event began at 15/1435 UTC,
reached a maximum of 15 PFU at 15/20000 UTC, and ended at 16/1205
UTC.
C. Geomagnetic Activity Summary
Geomagnetic field activity was at
mostly quiet levels.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 216 SSN 131 Afr/Ap 005/004 X-ray Background C1.5 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 9.0e+06 GT 10 MeV 7.9e+05 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 3.40e+07 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 1 1 3 0 2 2 2 0 Planetary 1 1 3 1 1 2 1 1
F. Comments
Afr estimated from Boulder A. The GOES-8 X-ray spectrometer was offline during 15/0020 - 16/2056 UTC. X-ray background estimated using GOES-10 data (long. W135).
All times in UTC
Latest news
Monday, 1 December 2025
X1.9 solar flare, Coronal hole faces Earth
Friday, 14 November 2025
X4.0 solar flare
Tuesday, 11 November 2025
X5.1 solar flare, G4 geomagnetic storm watch
Latest forum messages
AR4299 M8.1 CME 2025/12/06 55Incoming & Unnumbered Active Regions 19AR4294 / 4296 / 4298 341Electron event 9AR 4299 83
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/06 | M8.1 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 167.7 +75.9 |
| Last 30 days | 107.1 +13.7 |