Viewing archive of Saturday, 26 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 26 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 177 Issued at 2200Z on 26 Jun 2010IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity has been very low.
IB. Solar Activity Forecast
Solar activity is expected to be very
low. An isolated C-class event is still possible on day one (27
June) as Region 1082 (N27W88) approaches the west limb.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic field has been quiet to unsettled with an isolated
active period at 26/0300-0600Z. Solar wind speed data from ACE
indicated the onset of a coronal hole high speed stream at 26/0215Z
with solar wind speeds increasing to around 450 km/s.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be predominately unsettled with isolated active periods
for days one thru three (27-29 June). Activity is forecast due to a
recurrent coronal hole high speed stream.
III. Event Probabilities 27 Jun to 29 Jun
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Jun 075 Predicted 27 Jun-29 Jun 077/077/078 90 Day Mean 26 Jun 075
V. Geomagnetic A Indices
Observed Afr/Ap 25 Jun 008/008 Estimated Afr/Ap 26 Jun 014/015 Predicted Afr/Ap 27 Jun-29 Jun 012/013-010/012-010/010
VI. Geomagnetic Activity Probabilities 27 Jun to 29 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 15% | 15% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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