Viewing archive of Monday, 21 September 2015
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 2015 Sep 21 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 264 Issued at 0245Z on 21 Sep 2015 This report is compiled from data received at SWO on 20 SepA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0455 0503 0517 2420 M1.5 0700 0701 0701 2700 0743 0743 0744 2700 0816 0817 0817 11000 0944 0944 0944 100 1732 1803 1829 2415 S20W24 M2.1 2n 140 320 II
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field reached
major storm levels 20/0900 UTC due to the arrival of the 18 Sep CME.
Minor strom levels were observed from 20/0900-1800 followed by
unsettled levels for the remainder of the day in transition from CME
effects to CH HSS effects.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 110 SSN 074 Afr/Ap 032/035 X-ray Background B3.4 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.1e+06 GT 10 MeV 3.8e+04 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 8.10e+06 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 2 5 5 5 4 4 2 3 Planetary 2 4 6 5 5 5 3 3
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
Strong far side CME 329Unspecified geomagnetic activity 1749Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 9Filaments 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 |