Viewing archive of Thursday, 25 April 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 Apr 25 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 115 Issued at 0245Z on 25 Apr 2002 This report is compiled from data received at SWO on 24 AprA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0246 0246 0246 150 1121 1122 1129 9915 N12E17 Sf 2500 1312 1316 1326 S18E01 C1.0 Sf 630 1335 1342 1354 S18E00 Sf 110 1707 1707 1709 130 1743 1754 1805 C1.9 400 2146 2156 2201 9912 N09W49 M1.7 1f 2229 2230 2230 170
B. Proton Events
The greater than 10 MeV proton event that began
at 21/0225 UTC continued. The greater than 10 MeV flux at the close
of the period was around 22 pfu and gradually decreasing.
C. Geomagnetic Activity Summary
Geomagnetic field activity was at
quiet to unsettled levels.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 177 SSN 256 Afr/Ap 007/007 X-ray Background B9.2 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.7e+07 GT 10 MeV 5.6e+06 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 2.70e+05 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 3 1 1 2 2 3 1 2 Planetary 3 1 1 2 2 3 2 2
F. Comments
Afr estimated based on Boulder USGS magnetometer data.
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
AR13883 2024/11/04 CME 45sun goes blank 72Space Weather Memes 566Incoming & Unnumbered Active Regions 1209AR13889 143
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 | 2024/11/13 | M1.7 |
| 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 | 166 -0.4 |
| Last 30 days | 163.2 +18.4 |