Viewing archive of Saturday, 31 May 2003
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 2003 May 31 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 151 Issued at 0245Z on 31 May 2003 This report is compiled from data received at SWO on 30 MayA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0548 0557 0603 0365 S05W54 C1.0 Sf 180 1954 1954 1954 140 2059 2059 2059 140
B. Proton Events
The proton event at greater than 10 MeV has
ended: 28/2335 UTC start, 121 pfu peak at 29/1530 UTC, and 30/0110
UTC end.
C. Geomagnetic Activity Summary
The geomagnetic field ranged from
unsettled to severe storm levels. The field was mostly unsettled to
active since about 30/0600 UTC with a single minor storm period from
30/1500-1800 UTC. The CME associated with the X1 flare early on 29
May was apparently observed to encounter the ACE spacecraft at about
30/1600 UTC. The shock in solar wind parameters was not strong and
an SI was not clearly observed by ground magnetometers.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 117 SSN 062 Afr/Ap 035/049 X-ray Background B3.3 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 5.2e+07 GT 10 MeV 2.5e+05 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W108 degrees) Daily Electron Fluence GT 2 MeV 5.00e+05 e/(cm2-ster-day) (GOES-12 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 7 4 3 3 4 5 4 4 Planetary 8 4 4 3 4 5 4 5
F. Comments
The Afr index reported in Part E is estimated from Boulder observations.
All times in UTC
Latest news
Monday, 11 November 2024
Coronal hole faces Earth
Friday, 1 November 2024
X2.0 solar flare
Wednesday, 9 October 2024
X1.8 solar flare, severe geomagnetic storm watch
Latest forum messages
AR 13901 88Incoming & Unnumbered Active Regions 1245Sunspot Latitudes at or near Solar Maximum 76The Rotations of AR 13780 and AR 13902 1Space Weather Memes 580
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 | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/20 | M1.1 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 142.7 -23.8 |
| Last 30 days | 155.2 +4.4 |