Viewing archive of Thursday, 28 February 2002
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 2002 Feb 28 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 059 Issued at 0245Z on 28 Feb 2002 This report is compiled from data received at SWO on 27 FebA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0446 0452 0505 9845 N13E26 Sf II 1550 1558 1604 9839 S18W69 M1.6 Sf 1629 1629 1629 220 2356 0012 0048 S27W90 M2.2
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was quiet to
unsettled.
D. Stratwarm
STRATWARM ALERT/ WEDNSDAY/ STRATWARM EXISTS
THROUGHOUT THE STRATOSPHERE DISTURBED CIRCULATION PATTERN WITH THE
WARM AIR REGION OVER THE POLAR REGION AND EASTERN ASIA AND A
DISPLACED VORTEX OVER NORTHERN SIBERIA, LEADING TO A REVERSED
TEMPERATURE GRADIENT BETWEEN THE POLE AND 60 N FROM 50 TO 3 HPA AND
WEAK MEAN ZONAL EASTERLY WINDS AT 60 N FROM 5 TO 2 HPA
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 199 SSN 192 Afr/Ap 005/004 X-ray Background C1.5 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 7.8e+04 GT 10 MeV 1.2e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 3.60e+05 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 3 1 1 1 2 2 2 2 Planetary 2 0 1 1 2 2 2 2
F. Comments
None
All times in UTC
Latest news
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Monday, 11 November 2024
Coronal hole faces Earth
Friday, 1 November 2024
X2.0 solar flare
Latest forum messages
Filaments and prominences 517AR 13901 108Incoming & Unnumbered Active Regions 1246Sunspot 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 |