Viewing archive of Thursday, 22 April 1999
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 1999 Apr 22 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 112 Issued at 0245Z on 22 APR 1999 This report is compiled from data received at SWO on 21 APRA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1619 1622 1627 100 1819 1820 1821 190
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET TO
ACTIVE
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 103 SSN 079 AFR/AP 014/012 X-RAY BACKGROUND B2.0 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 1.3E+05 GT 10 MEV 1.2E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 1.60E+07 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 2 2 3 4 3 3 3 2 PLANETARY 2 1 3 4 3 3 3 2
F. Comments
None
All times in UTC
Latest news
Friday, 1 November 2024
X2.0 solar flare
Wednesday, 9 October 2024
X1.8 solar flare, severe geomagnetic storm watch
Tuesday, 8 October 2024
Double X-flares, glancing blow possible
Latest forum messages
Cactus Discrepancies? Latest SOHO/LASCO images show a different story 9AR13889 32Filaments and prominences 383Unspecified geomagnetic activity 1608DSCOVR data loss - is it due to CME impact or other reasons? 3
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 | 2024/11/10 | M4.2 |
| Last geomagnetic storm | 2024/11/09 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 186 +19.6 |
| Last 30 days | 163.1 +14.2 |