Viewing archive of Sunday, 28 November 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 Nov 28 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 332 Issued at 2200Z on 28 Nov 2010IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z Solar activity has been very low. New Regions 1129
(S25W76) a Bxo-Beta type spot group and Region 1130 (N13E00), a
Csi-Beta type spot group, were numbered today. Region 1130 produced
a B2 x-ray event at 28/1754Z.
IB. Solar Activity Forecast
Solar activity is expected to be very
low with a chance of isolated C-class events from Region 1130 for
the next three days (29 November - 01 December).
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
The geomagnetic field has been quiet to unsettled due to a recurrent
coronal hole high speed stream. Observations from the ACE
spacecraft indicated solar wind speeds reached approximately 500
km/s during the period.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be predominately quiet to unsettled with a slight chance
for isolated active periods during the next three days (29
November-01 December). The activity is forecast due to a recurrent
coronal hole high speed stream becoming geoeffective.
III. Event Probabilities 29 Nov to 01 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 Nov 080 Predicted 29 Nov-01 Dec 080/080/080 90 Day Mean 28 Nov 081
V. Geomagnetic A Indices
Observed Afr/Ap 27 Nov 005/012 Estimated Afr/Ap 28 Nov 007/010 Predicted Afr/Ap 29 Nov-01 Dec 006/007-007/007-007/007
VI. Geomagnetic Activity Probabilities 29 Nov to 01 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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