Viewing archive of Monday, 28 June 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 Jun 28 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 179 Issued at 0245Z on 28 JUN 1999 This report is compiled from data received at SWO on 27 JUNA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0834 0844 0902 8592 N23W25 M1.0 2N 230 240 IV
B. Proton Events
THE SLIGHT PROTON ENHANCEMENT OBSERVED ON 26 JUN
DECAYED TO BACKGROUND LEVEL EARLY ON 27 JUN.
C. Geomagnetic Activity Summary
AT MIDDLE LATITUDES, THE
GEOMAGNETIC FIELD RANGED FROM QUIET TO ACTIVE LEVELS. HIGHER
LATITUDES EXPERIENCED QUIET TO MINOR STORM CONDITIONS. THE MOST
DISTURBED PERIOD WAS THE LATTER HALF OF 27 JUN.
D. Stratwarm
None.
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 207 SSN 341 AFR/AP 018/021 X-RAY BACKGROUND C1.3 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 1.7E+06 GT 10 MEV 1.4E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 1.30E+05 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 2 3 3 3 4 4 4 4 PLANETARY 2 3 3 3 5 4 5 4
F. Comments
None.
All times in UTC
Latest news
Monday, 11 November 2024
Coronal hole faces Earth
Friday, 1 November 2024
X2.0 solar flare
Wednesday, 9 October 2024
X1.8 solar flare, severe geomagnetic storm watch
Latest forum messages
Filaments and prominences 488AR 13901 90Incoming & Unnumbered Active Regions 1245Sunspot Latitudes at or near Solar Maximum 76The Rotations of AR 13780 and AR 13902 1
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 | 2024/11/20 | M1.1 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 142.7 -23.8 |
| Last 30 days | 155.2 +4.4 |