Viewing archive of Wednesday, 8 September 2004

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 2004 Sep 08 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 252 Issued at 2200Z on 08 Sep 2004

IA. Analysis of Solar Active Regions and Activity from 07-2100Z to 08-2100Z

Solar activity has been low. A C1.5 flare occurred at 0110 UTC and was observed by SXI on the east limb at N05. A C1.0 flare was observed at 2002 UTC from Region 669 (S05W09). Region 669 also produced a B9.0 at 0349 UTC and a B9.7 at 1458 UTC. A 20 degree filament disappeared from N01W35 between 1324 UTC and 1519 UTC, but there was no obvious CME that could be associated.
IB. Solar Activity Forecast
Solar activity is expected to be low. There is a slight chance for an isolated M class flare.
IIA. Geophysical Activity Summary 07-2100Z to 08-2100Z
The geomagnetic field has been quiet to unsettled with an isolated active period from 0600 to 0900 UTC. Solar wind data from ACE has indicated a decrease in solar wind speed during the past 24 hours from approximately 440 km/s to 380 km/s.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet to unsettled for the next three days (09-11 September).
III. Event Probabilities 09 Sep to 11 Sep
Class M15%15%15%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       08 Sep 125
  Predicted   09 Sep-11 Sep  130/135/140
  90 Day Mean        08 Sep 111
V. Geomagnetic A Indices
  Observed Afr/Ap 07 Sep  011/016
  Estimated     Afr/Ap 08 Sep  008/010
  Predicted    Afr/Ap 09 Sep-11 Sep  006/010-006/008-006/008
VI. Geomagnetic Activity Probabilities 09 Sep to 11 Sep
A. Middle Latitudes
Active25%25%25%
Minor storm05%05%05%
Major-severe storm05%05%05%
B. High Latitudes
Active30%30%30%
Minor storm10%10%10%
Major-severe storm05%05%05%

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!

SpaceWeatherLive Pro
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/12/08X2.2
Last M-flare2024/12/23M8.9
Last geomagnetic storm2024/12/17Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 2024152.5 -13.9
December 2024106.6 -45.9
Last 30 days116.1 -41.8

This day in history*

Solar flares
12024M8.9
22015M6.75
31998M3.34
42013M2.36
52013M1.97
DstG
12002-67
22000-62G2
31989-60
42014-57
51982-53G1
*since 1994

Social networks