Product: Weekly Highlights and Forecasts:Issued: 2008 Dec 16 2221 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact: www.swpc.noaa.gov/weekly.html
#
# Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity
08 - 14 December 2008
Solar activity was very low during 08 - 10 December with no flare activity observed. Activity increased to low levels on 11 December by virtue of an isolated low-level C-class flare from Region 1009 (S25, L = 146, class/area Dso/050 on 10 December). Region 1009 emerged on 10 December as a simply-structured spot group. It departed the visible disk early on 13 December. Activity decreased to very low levels during 12 - 14 December with no flare activity observed. A filament disappearance (location N50W15) occurred between 12/0600 - 0800 UTC and was associated with a slow CME off
the northwest limb based on SOHO/LASCO C2 data.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit reached high levels during 08 - 10 December.
Geomagnetic field activity was at quiet levels at all latitudes during most of the period. ACE solar wind measurements indicated a subsiding coronal hole high-speed stream was in progress at the start of the period. Velocities gradually decreased from 532 to 314 km/sec during 08 - 10 December. A solar sector boundary crossing (away (+) to toward (-)) occurred late on 10 December associated with minor increases in velocity, plasma density, and IMF total field intensity.
Forecast of Solar and Geomagnetic Activity
17 December 2008 - 12 January 2009
Solar activity is expected to be at very low levels.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to reach high levels during 02 - 06 January.
Geomagnetic field activity is expected to be at quiet levels during 17 - 21 December. Activity is expected to increase to unsettled levels during 22 - 24 December due to a recurrent coronal hole high speed stream (CH HSS). Activity is expected to decrease to quiet levels during 25 - 30 December. Activity is expected to increase to unsettled levels during 31 December - 02 January due to another recurrent CH HSS. Activity is expected to decrease to quiet levels during 03 - 12 January.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2008 Dec 16 2222 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact: www.swpc.noaa.gov/wwire.html
#
# 27-day Space Weather Outlook Table# Issued 2008 Dec 16
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2008 Dec 17 68 5 2
2008 Dec 18 68 5 2
2008 Dec 19 68 5 2
2008 Dec 20 68 5 2
2008 Dec 21 68 5 2
2008 Dec 22 68 10 3
2008 Dec 23 68 8 3
2008 Dec 24 68 8 3
2008 Dec 25 68 5 2
2008 Dec 26 69 5 2
2008 Dec 27 70 5 2
2008 Dec 28 70 5 2
2008 Dec 29 70 5 2
2008 Dec 30 70 5 2
2008 Dec 31 70 8 3
2009 Jan 01 70 10 3
2009 Jan 02 70 10 3
2009 Jan 03 70 5 2
2009 Jan 04 70 5 2
2009 Jan 05 70 5 2
2009 Jan 06 70 5 2
2009 Jan 07 70 5 2
2009 Jan 08 70 5 2
2009 Jan 09 69 5 2
2009 Jan 10 69 5 2
2009 Jan 11 69 5 2
2009 Jan 12 68 5 2
(NOAA)
