Viewing archive of Wednesday, 12 September 2001
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 2001 Sep 12 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 255 Issued at 0245Z on 12 Sep 2001 This report is compiled from data received at SWO on 11 SepA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0049 0111 0123 M2.6 86 0653 0704 0722 M1.2 0943 0945 0946 450 0956 0956 0956 350 1230 1233 1235 C2.9 120 1718 1721 1753 9610 S12E11 Sf 1300 1903 1903 1903 430 2025 2036 2043 9616 S12E88 M4.5 Sf 390 26
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was quiet to
active. The onset of coronal hole high speed stream effects was
evident with elevated geomagnetic activity from about 1200 UTC
through the end of the day.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 250 SSN 180 Afr/Ap 012/009 X-ray Background C2.8 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.3e+05 GT 10 MeV 1.3e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 2.50e+06 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 1 2 1 1 4 4 3 3 Planetary 1 0 0 1 3 4 3 3
F. Comments
Afr estimated from Boulder A.
All times in UTC
Latest news
Sunday, 8 December 2024
X2.2 solar flare, SDO outage
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Monday, 11 November 2024
Coronal hole faces Earth
Latest forum messages
jsoc 64Strong far side CME 321Unspecified geomagnetic activity 1746Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 6AR 13932 10
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!
Space weather facts
| Last X-flare | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/22 | M1.0 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2024 | 152.5 -13.9 |
| December 2024 | 103.3 -49.2 |
| Last 30 days | 115.4 -40.8 |