Viewing archive of Wednesday, 22 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 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 1998 This report is compiled from data received at SWO on 21 APRA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 1008 1008 1008 210
B. Proton Events
THE GREATER THAN 10 AND 100 MEV EVENTS REMAIN IN
PROGRESS. THE GREATER THAN 10 MEV EVENT THAT BEGAN AT 20/1400Z
APPEARS TO HAVE PEAKED WITH A MAXIMUM VALUE OF 1700 PFU AT 21/1205,
AND IS CURRENTLY IN A SLOW DECLINE AT APPROXIMATELY 530 PFU. THE
GREATER THAN 100 MEV EVENT PEAKED WITH A MAXIMUM VALUE OF 7.4 PFU
AT 21/1255Z, AND IS CURRENTLY DECLINING BACK NEAR EVENT THRESHOLD.
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD HAS BEEN
MOSTLY QUIET FOR THE PAST 24 HOURS.
D. Stratwarm
None.
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 092 SSN 047 AFR/AP 007/007 X-RAY BACKGROUND B3.3 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 1.2E+08 GT 10 MEV 7.2E+07 P/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 1.40E+04 E/(CM2-STER-DAY) GOES-9 SATELLITE SYNCHRONOUS ORBIT W135 DEGREES) 3 HOUR K-INDICES: BOULDER 2 3 2 2 1 2 1 2 PLANETARY 2 3 1 2 2 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
AR 13932 84Season greetings from SpaceWeatherLive 2A little bit about our hobby for the general public 92024/12/23 AR13932 M8.9 & M4.1 associated CMEs 15Ask your obscure/"stupid" space weather questions. 128
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 |