Viewing archive of Monday, 21 July 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 Jul 21 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 202 Issued at 0245Z on 21 Jul 2003 This report is compiled from data received at SWO on 20 JulA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1722 1726 1736 0410 S11W22 C3.9 Sf 390 1859 1900 1901 140
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was at
unsettled to minor storm levels. A high speed solar wind stream with
speeds exceeding 700 km/s is responsible for this disturbance.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 157 SSN 224 Afr/Ap 020/019 X-ray Background B8.9 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 1.5e+06 GT 10 MeV 1.1e+04 p/(cm2-ster-day) (GOES-11 satellite synchronous orbit W113 degrees) Daily Electron Fluence GT 2 MeV 8.40e+07 e/(cm2-ster-day) (GOES-12 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 5 4 4 3 3 3 2 3 Planetary 5 4 4 3 3 3 3 3
F. Comments
None
All times in UTC
Latest news
Monday, 30 March 2026
X1.5 solar flare
Tuesday, 17 March 2026
M2.7 solar flare, CME arrival possible
Sunday, 1 February 2026
Complex sunspot region 4366
Latest forum messages
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2026/03/30 | X1.5 |
| Last M-flare | 2026/04/09 | M1.0 |
| Last geomagnetic storm | 2026/04/18 | Kp6- (G2) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2026 | 85.9 +7.7 |
| April 2026 | 83.6 -2.3 |
| Last 30 days | 92.3 +30.4 |
This day in history*
Aurora on this day in history
No observations submitted for this day in history. If you've observed the aurora and you have some amazing photos to show off, submit your observations now!
Submit your aurora observation