Viewing archive of Tuesday, 27 September 2011

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 2011 Sep 27 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 270 Issued at 0245Z on 27 Sep 2011 This report is compiled from data received at SWO on 26 Sep
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0001 0001 0001                       110                           
 0007 0007 0007                       100                           
 0011 0011 0017  1303 S28W77       Sf 120                           
 0506 0508 0513  1302 N13E34 M4.0  1b        360       IV           
 1127      2222                                        IV           
 1128      1137                                     II              
 1437 1446 1502  1302 N14E30 M2.6  2b                               
 1634 1635 1640  1302 N15E28       Sf                  IV           
 2228 2228 2228  1302                 500              IV           
 2352 2352 2352                       760                           
B. Proton Events
The greater than 10 MeV proton event that began at 23/2255Z, reached a maximum of 35 pfu at 26/1115Z, and was in progress at the end of the day.
C. Geomagnetic Activity Summary
Activity ranged from quiet to severe storm levels.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 148  SSN 103  Afr/Ap 020/067   X-ray Background C1.4
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 8.3e+07   GT 10 MeV 2.2e+06 p/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 8.10e+06 e/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 2 1 1 2 5 6 5 4 Planetary 1 0 ? 1 5 8 8 4 
F. Comments
  None

All times in UTC

<< 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%
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/11/06X2.39
Last M-flare2024/11/23M1.1
Last geomagnetic storm2024/11/10Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
October 2024166.4 +25
November 2024144.1 -22.3
Last 30 days158.7 +10.9

This day in history*

Solar flares
12000X3.4
22000X2.87
32000X2.71
41998X1.54
51999M4.33
DstG
12001-221G4
21982-197G3
31986-86G2
41981-66
51991-65
*since 1994

Social networks