Viewing archive of Saturday, 27 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 27 2204 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 27 May 2006IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z Solar activity was very low. Region 885 (S12W54)
produced two B-class flares today. The largest of these was a B7
flare at 27/1643Z. Region 888 (N06W77) produced a B1 flare at
27/0723Z. Region 889 (S03E12) was numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be very
low, but there is a slight chance for a C-class flare.
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet on 28 May. Quiet to unsettled conditions are
expected on 29 May. Mostly unsettled conditions, with isolated
active periods, are expected on 30 May due to transient effects.
III. Event Probabilities 28 May to 30 May
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 27 May 083 Predicted 28 May-30 May 080/080/080 90 Day Mean 27 May 082
V. Geomagnetic A Indices
Observed Afr/Ap 26 May 001/005 Estimated Afr/Ap 27 May 002/003 Predicted Afr/Ap 28 May-30 May 005/005-010/010-010/015
VI. Geomagnetic Activity Probabilities 28 May to 30 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 20% | 20% |
| Minor storm | 05% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 25% | 30% |
| Minor storm | 05% | 10% | 15% |
| Major-severe storm | 01% | 01% | 05% |
All times in UTC
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