Viewing archive of Monday, 26 May 2008
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 2008 May 26 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 147 Issued at 2200Z on 26 May 2008IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity was at very low levels. New Region 997
(S08W01) was numbered today. Region 997 is an Axx group in an alpha
magnetic configuration and has two spots that were seen in
white-light imagery.
IB. Solar Activity Forecast
Solar activity is expected to remain
at very low levels.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic field was at predominately quiet levels. The greater
than 2 MeV electron flux at geosynchronous orbit reached high levels
again today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at mostly quiet levels for days one and two (27 and
28 May). Activity is expected to increase to quiet to unsettled
levels with a chance for isolated active conditions on day three (29
May), due to a coronal hole high speed stream rotating into a
geoeffective position.
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 068 Predicted 27 May-29 May 068/068/068 90 Day Mean 26 May 071
V. Geomagnetic A Indices
Observed Afr/Ap 25 May 007/006 Estimated Afr/Ap 26 May 003/008 Predicted Afr/Ap 27 May-29 May 005/005-005/005-008/010
VI. Geomagnetic Activity Probabilities 27 May to 29 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 25% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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