Viewing archive of Sunday, 30 January 2011
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 2011 Jan 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 030 Issued at 2200Z on 30 Jan 2011IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity has been at very low levels for the past
24 hours. Region 1150 (S21E37) grew in both area and extent while
developing penumbra on both poles. It was classified as a DAO group
with a beta magnetic classification. A faint partial-halo CME,
visible in STEREO behind C2 imagery at 30/0310Z and LASCO C3 imagery
at 30/1954Z, indicate the CME is earthward directed. SDO/AIA 193
imagery associates this event with the 26 degree filament liftoff
observed yesterday at 29/1219Z.
IB. Solar Activity Forecast
Solar activity is expected to be at
very low levels with a chance for C-class events for the next three
days (31 January - 02 February).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic field has been at quiet levels for the past 24 hours.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at predominantly quiet levels for the next two days
(31 January - 01 February). Quiet to unsettled levels with a chance
for isolated active periods are expected on day three (02 February)
as a recurrent coronal hole high-speed stream moves into a
geoeffective position.
III. Event Probabilities 31 Jan to 02 Feb
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Jan 083 Predicted 31 Jan-02 Feb 083/082/082 90 Day Mean 30 Jan 084
V. Geomagnetic A Indices
Observed Afr/Ap 29 Jan 003/004 Estimated Afr/Ap 30 Jan 002/005 Predicted Afr/Ap 31 Jan-02 Feb 005/005-005/005-008/008
VI. Geomagnetic Activity Probabilities 31 Jan to 02 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 10% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 15% |
| Minor storm | 01% | 01% | 10% |
| Major-severe storm | 01% | 01% | 01% |
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