Viewing archive of Tuesday, 28 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 28 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 118 Issued at 0245Z on 28 APR 1998 This report is compiled from data received at SWO on 27 APRA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0855 0920 0938 8210 S16E50 X1.0 2B 3400 950 IV
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD RANGED FROM
UNSETTLED TO MINOR STORM LEVELS.THE MOST DISTURBED PERIOD WAS FROM
27/0000-0300Z. THIS DISTURBANCE APPEARS TO BE CAUSED BY AN EXTENSION
OF THE SOUTHERN CORONAL HOLE. ENERGETIC ELECTRON FLUXES AT
GEOSYNCHRONOUS ORBIT WERE PREDOMINANTLY HIGH.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 091 SSN 019 AFR/AP 016/014 X-RAY BACKGROUND B1.4 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 2.3E+06 GT 10 MEV 4.0E+04 P/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 3.80E+08 E/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) 3 HOUR K-INDICES: BOULDER 5 3 3 3 2 3 2 2 PLANETARY 5 4 3 3 3 2 2 2
F. Comments
None
All times in UTC
Latest news
Monday, 23 December 2024
M9.0 solar flare with earth-directed CME
Sunday, 8 December 2024
X2.2 solar flare, SDO outage
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Latest forum messages
2024/12/23 AR13932 M8.9 & M4.1 associated CMEs 34AR 13932 85Season greetings from SpaceWeatherLive 5Ask your obscure/"stupid" space weather questions. 129A little bit about our hobby for the general public 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 | 2024/12/25 | M4.9 |
| 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 | 115.2 -37.3 |
| Last 30 days | 120.1 -38.2 |