Viewing archive of Wednesday, 17 February 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 Feb 17 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 048 Issued at 0245Z on 17 FEB 1999 This report is compiled from data received at SWO on 16 FEBA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0008 0017 0032 8462 N20W07 M1.2 1F 0249 0312 0345 8458 S23W14 M3.2 SF 710 560 II/IV 0404 0408 0414 M1.5 1231 1231 1232 120 1237 1239 1242 280 1250 1251 1253 160 1318 1318 1320 6400 1351 1351 1352 1700 1423 1423 1423 300 1459 1500 1507 8462 N20W09 SF 7000 1518 1519 1520 910 1608 1608 1608 730 1615 1616 1616 660 1713 1713 1715 1300 1818 1818 1819 450 1844 1844 1846 720 1931 1932 1932 890 2116 2121 2123 8462 N19W12 C5.3 1N 15000 65 II 2325 2329 2333 C1.9 2400
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 192 SSN 176 AFR/AP 003/004 X-RAY BACKGROUND B9.2 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 3.2E+05 GT 10 MEV 1.6E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 4.60E+06 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 1 1 1 1 1 1 1 1 PLANETARY 1 0 0 2 1 1 1 1
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
Changelog/Featurelog 163AR 13932 592024/12/23 CME by AR 13932's M8.9 flare. 6Incoming & Unnumbered Active Regions 1366Growth of Cycle 25 779
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 | 2024/12/24 | M4.1 |
| 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 | 110.7 -41.8 |
| Last 30 days | 117.3 -41.4 |