Viewing archive of Tuesday, 24 August 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 Aug 25 0050 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 237 Issued at 2200Z on 24 Aug 2004

IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z

Solar activity was very low. A bright surge associated with a B6 x-ray event was observed near S07 on the east limb at 24/1352Z. A CME was also observed in association with this event. The likely source of this activity was old Region 655 (S09, L=177), which is due to rotate into view tomorrow. All active regions on the visible disk were stable or in decay. No other significant activity was noted.
IB. Solar Activity Forecast
Solar activity is expected to be very low to low. The new region rotating into view on the southeast limb may boost activity levels.
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
The geomagnetic field was mostly quiet with isolated unsettled periods. The greater than 2 MeV electron flux at geosynchronous orbit was at high levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to remain at quiet to unsettled levels for the next three days.
III. Event Probabilities 25 Aug to 27 Aug
Class M05%10%10%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       24 Aug 105
  Predicted   25 Aug-27 Aug  105/105/105
  90 Day Mean        24 Aug 109
V. Geomagnetic A Indices
  Observed Afr/Ap 23 Aug  010/007
  Estimated     Afr/Ap 24 Aug  006/005
  Predicted    Afr/Ap 25 Aug-27 Aug  005/010-008/008-008/008
VI. Geomagnetic Activity Probabilities 25 Aug to 27 Aug
A. Middle Latitudes
Active10%15%15%
Minor storm01%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active15%20%20%
Minor storm01%05%05%
Major-severe storm01%01%01%

All times in UTC

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