Viewing archive of Friday, 3 December 1999
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 1999 Dec 03 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 337 Issued at 0245Z on 03 DEC 1999 This report is compiled from data received at SWO on 02 DECA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0150 0238 0246 8782 N10W56 SF 110 0939 0939 0939 120 2002 2002 2003 380
B. Proton Events
None
C. Geomagnetic Activity Summary
HE GEOMAGNETIC FIELD WAS QUIET.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 166 SSN 156 AFR/AP 003/004 X-RAY BACKGROUND C1.0 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 4.4E+05 GT 10 MEV 1.2E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 2.20E+06 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 1 1 1 0 1 2 1 1 PLANETARY 2 0 0 1 1 1 2 2
F. Comments
None
All times in UTC
Latest news
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Sunday, 18 January 2026
X1.9 solar flare with earth-directed CME
Wednesday, 31 December 2025
Happy New Year! Celebrate with an M7.1 solar flare!
Latest forum messages
AR 4351 11Ask a powergrid operator anything 46Current Farside Activity 327Filaments and prominences 452Do the high-resolution sunspot counts point to more complex sunspots? 12
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 | 2026/01/18 | X1.9 |
| Last M-flare | 2026/01/21 | M3.4 |
| Last geomagnetic storm | 2026/01/22 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| January 2026 | 117.9 -6.1 |
| Last 30 days | 121.2 +12.1 |