Viewing archive of Sunday, 28 December 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 Dec 28 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 363 Issued at 2200Z on 28 Dec 2008IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z Solar activity was very low with no flares observed.
The visible disk remained spotless. SOHO Lasco C2 imagery observed
the first of four, weak CMEs off the northeast limb beginning at
27/0530Z. The last of these CMEs was observed in C3 imagery at
27/1818Z. None of these CMEs are expected to be geoeffective.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
The geomagnetic field was quiet at all latitudes.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet throughout the forecast period (29 - 31
December).
III. Event Probabilities 29 Dec to 31 Dec
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 28 Dec 070 Predicted 29 Dec-31 Dec 071/071/071 90 Day Mean 28 Dec 069
V. Geomagnetic A Indices
Observed Afr/Ap 27 Dec 001/001 Estimated Afr/Ap 28 Dec 001/005 Predicted Afr/Ap 29 Dec-31 Dec 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 29 Dec to 31 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 01% | 01% | 01% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 01% | 01% | 01% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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