Viewing archive of Wednesday, 26 May 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 May 26 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 146 Issued at 2200Z on 26 May 2010IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity has been very low. Region 1072 (S15
W52) has decayed to a unipolar H type group. No flares were
observed during the period.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic field has been quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be initially quiet. An increase to unsettled to active
levels with a slight chance for minor storm periods is expected
around mid-day on day one (May 27), due to the arrival of the CME
observed on 23 May. Continued active levels with a slight chance for
minor storm periods are expected on day two (May 28) and continuing
through day three (May 29), with the arrival of the CME observed on
24 May.
III. Event Probabilities 27 May to 29 May
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 26 May 072 Predicted 27 May-29 May 075/076/078 90 Day Mean 26 May 078
V. Geomagnetic A Indices
Observed Afr/Ap 25 May 004/005 Estimated Afr/Ap 26 May 005/005 Predicted Afr/Ap 27 May-29 May 015/015-020/022-018/020
VI. Geomagnetic Activity Probabilities 27 May to 29 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 50% | 50% | 40% |
| Minor storm | 15% | 15% | 10% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 50% | 50% | 45% |
| Minor storm | 25% | 25% | 20% |
| Major-severe storm | 15% | 15% | 10% |
All times in UTC
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