Product: Weekly Highlights and Forecasts
:Issued: 2012 Dec 31 1342 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact www.swpc.noaa.gov/weekly.html
#
# Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity 24 - 30 December 2012
Solar activity was low. Region 1635 (N11, L=63, class/area=Dac/270 on 25 December) was the most active region this period, producing twelve C-class flares. The largest of these was a C4/Sf at 1304 UTC on 25 December. Although Region 1635 periodically exhibited beta-gamma magnetic characteristics during its lifetime, it exited the visible disk as a simple spotless plage region. Region 1633 (S07, L=113, class/area=Eai/100 on 24 December) produced a C1 at 2226 UTC on 24 December along with numerous low-level B-class flares throughout the period. Region 1638 (N12, L=310, class/area=Hsx/150 on 29 December) produced a single C1/Sf flare at 1933 UTC on 29
December. A 10 degree filament erupted near N08E20 around 1939 UTC on 27 December. While the bulk of the ejecta from this event was directed north of the ecliptic, a weak impact is expected at earth
on 01 January.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at normal levels all week.
Geomagnetic field activity was quiet. Solar wind speed at the ACE spacecraft ranged from around 250 km/s to around 350 km/s throughout most of the period. There was a slight increase to about 490 km/s towards the end of the week as the effects from a coronal hole high speed stream (CH HSS) were felt for about a 24 hour period. They have since settled back down to appproximately 400 km/s as the effects of the CH HSS begin to wane. The interplanetary magnetic field total field ranged from around 1 - 8 nT while the Bz component ranged from around +5 nT to -5 nT.
Forecast of Solar and Geomagnetic Activity 31 December - 26 January 2013
Solar activity is expected to be at low levels with a chance of isolated M-class flares throughout the period (31 December - 26 January).
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at background levels throughout the period.
Geomagnetic field activity is expected to be predominately quiet with a chance for unsettled conditions on 01-02, and 10 January with positive polarity coronal hole high speed streams.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2012 Dec 31 1342 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web www.swpc.noaa.gov/wwire.html
#
# 27-day Space Weather Outlook Table
# Issued 2012-12-31
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2012 Dec 31 105 5 2
2013 Jan 01 105 8 3
2013 Jan 02 110 10 3
2013 Jan 03 110 5 2
2013 Jan 04 110 5 2
2013 Jan 05 110 5 2
2013 Jan 06 110 5 2
2013 Jan 07 110 5 2
2013 Jan 08 110 5 2
2013 Jan 09 105 5 2
2013 Jan 10 105 5 2
2013 Jan 11 105 5 2
2013 Jan 12 105 5 2
2013 Jan 13 105 10 3
2013 Jan 14 110 5 2
2013 Jan 15 110 5 2
2013 Jan 16 110 5 2
2013 Jan 17 110 5 2
2013 Jan 18 115 5 2
2013 Jan 19 115 5 2
2013 Jan 20 115 5 2
2013 Jan 21 120 5 2
2013 Jan 22 120 5 2
2013 Jan 23 120 5 2
2013 Jan 24 115 5 2
2013 Jan 25 115 5 2
2013 Jan 26 110 5 2
(NOAA)