Viewing archive of Thursday, 30 April 1998
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 1998 Apr 30 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 120 Issued at 0245Z on 30 APR 1998 This report is compiled from data received at SWO on 29 APRA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0513 0522 0525 8210 S17E29 B7.7 SF 250 0754 0806 0827 8210 S17E23 C1.7 1F 440 1606 1637 1659 8210 M6.8 1400 100 IV 1957 1958 2000 110
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET.
AS OF 30/0200Z THE EXPECTED SHOCK FROM THE X1/HALO CME OF 27 APR HAD
NOT ARRIVED. ENERGETIC ELECTRON FLUXES AT GEOSYNCHRONOUS ORBIT WERE
PREDOMINANTLY HIGH.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 101 SSN 065 AFR/AP 005/006 X-RAY BACKGROUND B2.0 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 1.3E+06 GT 10 MEV 2.7E+04 P/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 6.90E+08 E/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) 3 HOUR K-INDICES: BOULDER 2 2 2 1 2 2 1 2 PLANETARY 2 1 1 2 2 2 2 2
F. Comments
None
Latest news
Monday, 6 May 2024
X4.5 solar flare
Saturday, 4 May 2024
Sunspot region 3663, X1 solar flare
Monday, 22 April 2024
Lot's of sunspots! Big chance for major flare activity?
Latest forum messages
Filaments and prominences 76AR3663 220Sporadic E and Flare activity 19Weakening of Earths magnetic field due to geomagnetic excursion 18CME Imagery isn't updating since May 3rd. 9
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 | 2024/05/06 | X4.4 |
| Last M-flare | 2024/05/06 | M1.5 |
| Last geomagnetic storm | 2024/05/02 | Kp7- (G3) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2024 | 136.5 +31.6 |
| Last 30 days | 156.6 +63.6 |