Viewing archive of Friday, 16 September 2005
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 2005 Sep 16 0248 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 259 Issued at 0245Z on 16 Sep 2005 This report is compiled from data received at SWO on 15 SepA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0152 0212 0218 M1.3 0449 0000 1640 IV 0830 0838 0846 0808 S12W14 X1.1 2n 52 450 0952 0952 0952 290 1635 0000 0420 IV 1855 1910 1926 0808 S11W19 M1.0 Sf 190 2238 0000 1001 IV
B. Proton Events
The greater than 10 MeV proton flux increased
during the shock passage to 235 pfu before declining to around 10
pfu by the end of the period.
C. Geomagnetic Activity Summary
The geomagnetic field was at quiet
to severe storm levels. Geomagnetic storming occurred in response to
the arrival of a CME associated with the double peak X-flare on 13
September. A 29 nT sudden impulse was observed in the Boulder
magnetometer at 15/0907 UTC. Solar wind speed at ACE rose from
approximately 600 km/s to near 900 km/s. The most disturbed periods
occurred between 12 and 18 UTC following periods of southward Bz to
near -15 nT.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 119 SSN 077 Afr/Ap 025/043 X-ray Background B3.5 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.7e+08 GT 10 MeV 6.1e+06 p/(cm2-ster-day) (GOES-11 satellite synchronous orbit W113 degrees) Daily Electron Fluence GT 2 MeV 4.60e+08 e/(cm2-ster-day) (GOES-12 satellite synchronous orbit W74 degrees) 3 Hour K-indices Boulder 4 2 3 4 5 6 5 3 Planetary 3 2 3 5 6 7 5 4
F. Comments
None
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
Unspecified geomagnetic activity 1748Strong far side CME 325Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 8Filaments and prominences 595Incoming & Unnumbered Active Regions 1351
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 |