Viewing archive of Thursday, 25 May 2006
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 2006 May 25 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 145 Issued at 2200Z on 25 May 2006IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z Solar activity was very low. Today's activity consisted
of a few, low-level B-class events. There is also an indication in
solar x-ray images of the return of old Region 882, which is just
behind the east limb at about S12. Region 882 produced a few B-class
events and reached a maximum area of 130 millionths on its
previous transit. The region appears to be quiet and stable at this
time.
IB. Solar Activity Forecast
Solar activity is expected to be very
low for the next three days (26-28 May).
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic field was quiet during the past 24 hours. Real-time
solar wind from ACE indicated the possible onset of a sector
boundary, beginning at about 1800Z. As of forecast issue time there
had not yet been any geomagnetic response.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled for the next 24 hours (26 May).
Conditions should return to predominantly quiet levels for 27-28
May.
III. Event Probabilities 26 May to 28 May
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 25 May 084 Predicted 26 May-28 May 085/085/085 90 Day Mean 25 May 081
V. Geomagnetic A Indices
Observed Afr/Ap 24 May 003/004 Estimated Afr/Ap 25 May 007/006 Predicted Afr/Ap 26 May-28 May 007/010-005/005-005/005
VI. Geomagnetic Activity Probabilities 26 May to 28 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 10% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 10% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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