Viewing archive of Sunday, 28 July 2002
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 2002 Jul 28 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 209 Issued at 0245Z on 28 Jul 2002 This report is compiled from data received at SWO on 27 JulA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1029 1029 1029 130 1438 1438 1438 120 2041 2044 2048 200 2110 2110 2110 130
B. Proton Events
The greater than 10 MeV proton event that began
at 22/0655 UTC ended at 27/0320 UTC. The maximum for this event was
28 pfu at 23/1025 UTC.
C. Geomagnetic Activity Summary
Geomagnetic field activity was at
unsettled to active levels during most of the period.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 231 SSN 323 Afr/Ap 014/019 X-ray Background C9.8 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 9.1e+06 GT 10 MeV 5.8e+05 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 4.80e+06 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 3 3 3 3 3 2 3 3 Planetary 4 3 3 4 4 3 4 3
F. Comments
Afr estimated using Boulder USGS magnetometer data.
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 |