Viewing archive of Tuesday, 23 August 2005

Solar activity 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.
Report of Solar-Geophysical Activity 2005 Aug 23 2204 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 235 Issued at 2200Z on 23 Aug 2005

IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z

Solar activity was moderate. Region 798 (S12W75) produced an M2/Sf flare at 23/1444 UTC. As in previous M flares in this region, it was associated with significant radio output that included type II/IV sweep activity and a CME.
IB. Solar Activity Forecast
Solar activity is expected to be moderate. Region 798 could produce another M-class flare as it rotates around the west limb.
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic field was quiet to unsettled. The greater than 10 MeV proton event remains in progress: start time 22/2040 UTC and preliminary maximum of 330 pfu at 23/1045 UTC.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet to unsettled until the arrival of the first CME that occurred early on Aug 22. Storm conditions are possible on Aug 24 and 25 due to CME activity. The greater than 10 MeV proton event is expected to continue for the next 24 to 48 hours.
III. Event Probabilities 24 Aug to 26 Aug
Class M50%30%10%
Class X05%01%01%
Proton90%50%10%
PCAFin progress
IV. Penticton 10.7 cm Flux
  Observed       23 Aug 112
  Predicted   24 Aug-26 Aug  105/100/090
  90 Day Mean        23 Aug 095
V. Geomagnetic A Indices
  Observed Afr/Ap 22 Aug  007/012
  Estimated     Afr/Ap 23 Aug  008/009
  Predicted    Afr/Ap 24 Aug-26 Aug  020/030-020/030-015/015
VI. Geomagnetic Activity Probabilities 24 Aug to 26 Aug
A. Middle Latitudes
Active50%50%50%
Minor storm20%20%20%
Major-severe storm05%05%05%
B. High Latitudes
Active60%60%60%
Minor storm25%25%25%
Major-severe storm10%10%10%

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-flare2024/11/13M1.7
Last geomagnetic storm2024/11/10Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
October 2024166.4 +25
November 2024166 -0.4
Last 30 days163.2 +18.4

This day in history*

Solar flares
11999X1.15
21999M8.06
32005M5.58
41999M4.11
52005M3.72
DstG
11960-167G3
21998-109G2
32012-108G2
41989-105
51979-90G1
*since 1994

Social networks