Viewing archive of Saturday, 8 October 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 Oct 08 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 281 Issued at 0245Z on 08 Oct 2011 This report is compiled from data received at SWO on 07 Oct
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0421 0421 0421                       100                           
 0942 0943 0943                       140                           
 1521 1521 1521                       170                           
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was mostly quiet.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 122  SSN 088  Afr/Ap 004/007   X-ray Background B3.9
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 4.9e+05   GT 10 MeV 1.3e+04 p/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W76 degrees)
Daily Electron Fluence
GT 2 MeV 4.00e+06 e/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W76 degrees)
3 Hour K-indices
Boulder 2 3 3 2 1 1 1 1 Planetary 2 2 2 2 1 1 1 2 
F. Comments
  None

All times in UTC

<< Go to daily overview page

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Sodankylä, Utsjoki
Kirkenes, Tromsø
Murmansk
Kiruna
The maximum X-ray flux of the past two hours is:
C6.62

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!

Donate SpaceWeatherLive Pro
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

00:00 UTC - Solar flare

Moderate M1.79 flare

alert


Friday, 28 March 2025
23:36 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M1.04)


21:24 UTC - Hemispheric Power Index

The OVATION model predicts the Hemispheric Power Index to reach 51GW at 21:59 UTC


19:45 UTC - Solar flare

Moderate M1.16 flare

alert


19:27 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M1.1)


Get instant alerts!

Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/03/28M1.7
Last geomagnetic storm2025/03/27Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
February 2025154.6 +17.6
March 2025128.3 -26.4
Last 30 days128.3 -23.7

This day in history*

Solar flares
12001X2.45
22014X1.45
32023X1.2
42024M3.2
52001M3.13
DstG
11959-154G3
21979-129G3
31989-125G3
41957-121G4
51984-86G2
*since 1994

Social networks