Viewing archive of Friday, 25 June 2010
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 2010 Jun 25 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 176 Issued at 2200Z on 25 Jun 2010IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z Solar activity was very low. Region 1082 (N26W77)
produced a B3 x-ray event at 25/1021Z. No other activity of note
was observed.
IB. Solar Activity Forecast
Solar activity is expected to remain
at very low levels with a slight chance for an isolated C-class
event on day one (26 June) as Region 1082 rotates around the limb.
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic field was quiet to unsettled.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at unsettled to active levels with a slight chance of
isolated minor storm periods all three days of the forecast period
(26 - 28 June). The increase in activity is due to a recurrent
coronal hole high speed stream.
III. Event Probabilities 26 Jun to 28 Jun
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 25 Jun 075 Predicted 26 Jun-28 Jun 076/077/078 90 Day Mean 25 Jun 075
V. Geomagnetic A Indices
Observed Afr/Ap 24 Jun 005/007 Estimated Afr/Ap 25 Jun 007/008 Predicted Afr/Ap 26 Jun-28 Jun 015/015-012/012-010/010
VI. Geomagnetic Activity Probabilities 26 Jun to 28 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 20% | 20% |
| Minor storm | 15% | 10% | 10% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 25% | 20% |
| Minor storm | 25% | 15% | 10% |
| Major-severe storm | 05% | 05% | 01% |
All times in UTC
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