Viewing archive of Monday, 10 December 2012
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 2012 Dec 10 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 345 Issued at 2200Z on 10 Dec 2012IA. Analysis of Solar Active Regions and Activity from 09-2100Z to 10-2100Z
Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C5 event observed at
10/0558Z from Region 1630 (N19W11). There are currently 2 numbered
sunspot regions on the disk. Two filament eruptions were observed off
the southeast limb early in the period. Both events have associated
CMEs; however neither event appears to be Earth directed.
IB. Solar Activity Forecast
Solar activity is expected to be at low
levels on days one, two, and three (11 Dec, 12 Dec, 13 Dec).
IIA. Geophysical Activity Summary 09-2100Z to 10-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed,
as measured by the ACE spacecraft, reached a peak speed of 345 km/s at
10/0645Z. Total IMF reached 8 nT at 10/1431Z. The maximum southward
component of Bz reached -6.1 nT at 10/1651Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels for the next three days (11 Dec, 12 Dec, 13 Dec).
III. Event Probabilities 11 Dec to 13 Dec
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 10 Dec 104 Predicted 11 Dec-13 Dec 105/105/110 90 Day Mean 10 Dec 119
V. Geomagnetic A Indices
Observed Afr/Ap 09 Dec 003/003 Estimated Afr/Ap 10 Dec 004/004 Predicted Afr/Ap 11 Dec-13 Dec 005/005-005/005-006/005
VI. Geomagnetic Activity Probabilities 11 Dec to 13 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 05% | 05% |
All times in UTC
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
TórshavnOulu, Rovaniemi, Sodankylä, Utsjoki
Reykjavik
Kirkenes, Tromsø, Trondheim
Murmansk
Kiruna, Luleå
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