Viewing archive of Wednesday, 21 February 2001
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 2001 Feb 21 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 052 Issued at 0245Z on 21 Feb 2001 This report is compiled from data received at SWO on 20 FebA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep None
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field ranged from
quiet to active levels.
D. Stratwarm
Stratwarm Alert Exists Tuesday
Major warming continues. A large warm area covers the polar region,
Siberia, Europe, and the eastern Atlantic, leading to a reversed
temperature gradient between 60N and the pole up to 5 HPA. Displaced
vortex lead to net easterly winds at latitude 60N throughout the
stratosphere.
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 146 SSN 119 Afr/Ap 008/008 X-ray Background B5.4 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 8.9e+04 GT 10 MeV 1.1e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 7.70e+05 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 2 1 2 4 3 2 1 2 Planetary 1 1 2 3 3 2 2 2
F. Comments
AUTODIN transmission of the following bulletins will cease on 15 Feb 01: FXXX01 KBOU, AXXX01 KBOU, AXXX02 KBOU, and AXXX03 KBOU. The bulletins will still be available via the Internet at www.afwin.afwa.af.mil for military users and www.sec.noaa.gov for non-military users. If web access is not acceptable or you have any questions, please contact Mr. Jerry Sanders at DSN 271-1399 (COMM 402-294-1399), e-mail jerry.sanders@afwa.af.mil.
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 534AR 13901 116Incoming & Unnumbered Active Regions 1249Strong far side CME 226AR 13903 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 | 156.1 +4.7 |