Viewing archive of Thursday, 20 December 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 Dec 20 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 354 Issued at 0245Z on 20 Dec 2001 This report is compiled from data received at SWO on 19 DecA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0229 0232 0236 9742 C4.9 770 1038 1038 1038 9739 130 1354 1357 1359 9739 S14W76 C1.6 Sf 160 1656 1656 1656 310 1701 1706 1709 9739 S15W74 M1.3 Sf
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was quiet to
unsettled. The IMF Bz was mostly southward this period creating
prolonged disturbed periods.
D. Stratwarm
STRATWARM ALERT EXISTS STRATWARM WEDNESDAY
STRATOSPHERIC WARMING IN THE UPPER STRATOSPHERE IN PROGRESS WITH A
RESERVED TEMPERATURE GRADIENT BETWEEN 60 N AND THE NORTH POLE
EXPECTED WITHIN THE NEXT 5 DAYS.
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 208 SSN 158 Afr/Ap 009/009 X-ray Background C1.5 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 4.8e+05 GT 10 MeV 1.5e+04 p/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) Daily Electron Fluence GT 2 MeV 5.10e+06 e/(cm2-ster-day) (GOES-8 satellite synchronous orbit W75 degrees) 3 Hour K-indices Boulder 3 2 2 3 2 2 2 2 Planetary 3 1 3 3 2 3 2 2
F. Comments
None
All times in UTC
Latest news
Sunday, 8 December 2024
X2.2 solar flare, SDO outage
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Monday, 11 November 2024
Coronal hole faces Earth
Latest forum messages
Unspecified geomagnetic activity 1747Strong far side CME 322jsoc 64Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 6AR 13932 10
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 | 2024/12/22 | M1.0 |
| 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 | 103.3 -49.2 |
| Last 30 days | 115.4 -40.8 |