Viewing archive of Tuesday, 17 May 2005

Geophysical report

:Product: 20050517SGAS.txt :Issued: 2005 May 17 0250 UT Prepared by the NOAA © SWPC and processed by

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 137 Issued at 0245Z on 17 May 2005 This report is compiled from data received at SWO on 16 May
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0233 0243 0250  0763 S17E17 M1.4  1b 100    61                     
 0856 0908 0915  0763 S17E15 M1.6  Sf 56     29                     
 1234 1234 1234                       100                           
 1509 1509 1510                       120                           
 2346 0003 0029  0763 S16E20 C2.1  Sf 320                           
B. Proton Events
C. Geomagnetic Activity Summary
The geomagnetic field was at quiet to minor storm levels with a period of major storm conditions between 16/0300 UTC and 0600 UTC. Solar wind speed at ACE has been steadily decreasing from approximately 700 km/s to 550 km/s until 16/2240 UTC when the speed increased to 600 km/s. The Bz component of the IMF has remained south between -1 nT and -10 nT during this reporting period. The greater than 2 MeV electron flux at geosynchronous orbit was high today.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 099  SSN 070  Afr/Ap 020/033   X-ray Background B2.7
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.9e+07   GT 10 MeV 1.7e+05 p/(cm2-ster-day)
(GOES-11 satellite synchronous orbit W114 degrees)
Daily Electron Fluence
GT 2 MeV 2.20e+08 e/(cm2-ster-day)
(GOES-12 satellite synchronous orbit W76 degrees)
3 Hour K-indices
Boulder 4 6 5 3 3 4 2 2 Planetary 4 6 5 3 4 5 2 2 
F. Comments

<< Go to daily overview page

Latest news


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!


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:2019/03/17Kp5 (G1)
Number of spotless days in 2019:53
Current stretch spotless days:6

This day in history*

Solar flares
*since 1994

Social networks