Viewing archive of Thursday, 20 December 2001

Geophysical report

Solar and Geophysical Activity Summary 2001 Dec 20 0245 UTC
Prepared 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 Dec
A. 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

<< Go to daily overview page

Latest news

Support 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!

100%

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/09/02Kp5 (G1)
Number of spotless days in 2019:185
Current stretch spotless days:16

This day in history*

Solar flares
12001M1.4
22001M1.4
32001M1.3
42014M1.2
52001M1.0
ApG
1200070G4
2200350G2
3199825G1
4200623G1
5201720
*since 1994

Social networks