Viewing archive of Sunday, 9 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 09 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 282 Issued at 0245Z on 09 Oct 2011 This report is compiled from data received at SWO on 08 Oct
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 1122 1122 1122                       140                           
 1154 1154 1154                       110                           
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field ranged between quiet and unsettled conditions today.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 118  SSN 061  Afr/Ap 005/007   X-ray Background B3.3
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 1.6e+06   GT 10 MeV 1.3e+04 p/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W76 degrees)
Daily Electron Fluence
GT 2 MeV 7.00e+06 e/(cm2-ster-day)
(GOES-13 satellite synchronous orbit W76 degrees)
3 Hour K-indices
Boulder 1 1 2 1 2 3 3 3 Planetary 1 1 1 1 2 2 3 3 
F. Comments
  None

All times in UTC

<< Go to daily overview page

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

Reykjavik

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

Iqaluit, NU
Nuuk
Tórshavn
Oulu, Rovaniemi, Sodankylä
Tromsø, Trondheim
Kiruna, Luleå, Sundsvall, Umeå
The strength of the interplanetary magnetic field is moderate (18.31nT), the direction is North (8.16nT).

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

Tuesday, 25 March 2025
20:45 UTC - Geomagnetic activity

Active geomagnetic conditions (Kp4) Threshold Reached: 20:19 UTC

alert


13:00 UTC - Type II Radio Emission

Begin Time: 25/03/2025 12:36 UTC Estimated Velocity: 516km/sec.


Monday, 24 March 2025
Coronal hole faces Earth

The anticipated strong G3 geomagnetic storm watch never materialized as the coronal mass ejection that was supposed to arrive early yesterday didn't arrive until today just past midnight UTC. The impact was very lackluster with the Bt (total strength of the IMF) increasing to a moderate 15nT at best and the solar wind speed reaching just 420km/s. A far cry from the anticipated 700 to 800km/s. That once again goes to show how hard it is to forecast space weather events and any resulting geomagnetic conditions. We remain under the influence of the CME and high latitude sky watchers should remain alert for some nice aurora displays but middle latitude sky watchers will probably have to wait for the next opportunity. 

alert

Read more
13:55 UTC - Coronal hole

A transequatorial coronal hole is facing Earth. Enhanced solar wind could arrive in ~3 days

alert


02:45 UTC - Geomagnetic activity

Active geomagnetic conditions (Kp4) Threshold Reached: 02:33 UTC

alert


Get instant alerts!

Space weather facts

Last X-flare2025/02/23X2.0
Last M-flare2025/03/21M1.2
Last geomagnetic storm2025/03/22Kp6- (G2)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
February 2025154.6 +17.6
March 2025138.3 -16.4
Last 30 days136.6 -17

This day in history*

Solar flares
12001M3.86
22000M3.34
32001M3.14
41998M2.37
52024M1.9
DstG
11976-226G4
21991-168G4
31988-154G3
41959-132G4
51990-111G2
*since 1994

Social networks