Viewing archive of Tuesday, 18 December 2001

Geophysical report

Solar and Geophysical Activity Summary 2001 Dec 18 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 352 Issued at 0245Z on 18 Dec 2001 This report is compiled from data received at SWO on 17 Dec
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
None
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was quiet to unsettled with active conditions occurring at higher latitudes.
D. Stratwarm
STRATWARM ALERT EXISTS STRATWARM MONDAY IN THE MIDDLE AND UPPER STRATOSPHERE, A STRONG TEMPERATURE INCREASE DURING ONE WEEK IS OBSERVED OVER SIBERIA AND NORTHEASTERN ASIA AND A REVERSED TEMPERATURE GRADIENT BETWEEN 60N AND THE NORTH POLE IS EXPECTED WITHIN THE NEXT 5 DAYS. STRATOSPHERIC WARMING IN THE UPPER STRATOSPHERE.
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 206  SSN 215  Afr/Ap 011/015   X-ray Background C1.0
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.6e+06   GT 10 MeV 2.5e+04 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 1.90e+05 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 1 2 3 3 3 3 3 2 Planetary 2 3 3 4 4 4 3 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:15

This day in history*

Solar flares
12005M9.8
22001M8.1
31999M2.1
41997M1.7
52001M1.5
ApG
1200370G3
2200056G4
3201132G1
4200421G1
5199916
*since 1994

Social networks