Weekly Highlights and Forecasts
:Issued: 2007 Dec 11 1854 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/weekly.html
:Issued: 2007 Dec 11 1854 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/weekly.html
# Weekly Highlights and Forecasts
Highlights of Solar and Geomagnetic Activity
03 - 09 December 2007
Solar activity was very low through the period, albeit with a gradual increase in X-ray background and flare activity. The increased activity was due to the emergence of three spot groups during the period including Region 977 (S05, L = 293, class/area Dso/030 on 04
December), Region 978 (S09, L = 225, class/area Dkc/220 on 09 December), and Region 979 (N07, L = 329, class/area Hax/080 on 09 December). Region 977 produced occasional subflares before it declined to plage on 07 December. Region 978 was numbered on 06 December and produced occasional subflares as it gradually developed during the remainder of the period. Region 979 also produced occasional subflares following its emergence on 08 December, then
departed the visible disk late on 09 December.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit reached high levels during 03 - 04 December.
The geomagnetic field was quiet throughout the period. ACE solar wind measurements indicated minor IMF, density, and velocity variations during the period. IMF Bt ranged from 0.3 to 9.2 nT while Bz ranged from +9.1 to -5.2 nT. Densities ranged from 1 to 12 p/cc. Velocities
ranged from 267 - 396 km/sec during the period.
Forecast of Solar and Geomagnetic Activity
12 December 2007 - 07 January 2008
Solar activity is expected to be very low to low. Isolated C-class flares are possible during 12 - 18 December and 01 - 07 January.
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 19 - 31 December.
The geomagnetic field is expected to be at quiet to unsettled levels during 12 - 16 December. Activity is expected to increase to unsettled to active levels during 17 - 19 December as a recurrent coronal hole high-speed stream disturbs the field. Minor storm levels are also expected on 17 December. Activity is expected to decrease to quiet to unsettled levels during 20 - 22 December as the high-speed stream gradually subsides. Activity is expected to
decrease to mostly quiet levels for the rest of the period.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2007 Dec 11 1854 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/wwire.html
#
# 27-day Space Weather Outlook Table
# Issued 2007 Dec 11
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2007 Dec 12 85 10 3
2007 Dec 13 80 5 2
2007 Dec 14 80 5 2
2007 Dec 15 80 5 2
2007 Dec 16 80 10 3
2007 Dec 17 80 20 5
2007 Dec 18 75 15 4
2007 Dec 19 70 15 4
2007 Dec 20 70 10 3
2007 Dec 21 70 10 3
2007 Dec 22 70 10 3
2007 Dec 23 75 8 3
2007 Dec 24 75 5 2
2007 Dec 25 75 5 2
2007 Dec 26 75 5 2
2007 Dec 27 75 5 2
2007 Dec 28 75 5 2
2007 Dec 29 75 5 2
2007 Dec 30 75 5 2
2007 Dec 31 75 5 2
2008 Jan 01 75 5 2
2008 Jan 02 80 5 2
2008 Jan 03 80 5 2
2008 Jan 04 85 5 2
2008 Jan 05 85 5 2
2008 Jan 06 85 5 2
2008 Jan 07 85 10 3
(NOAA)
Highlights of Solar and Geomagnetic Activity
03 - 09 December 2007
Solar activity was very low through the period, albeit with a gradual increase in X-ray background and flare activity. The increased activity was due to the emergence of three spot groups during the period including Region 977 (S05, L = 293, class/area Dso/030 on 04
December), Region 978 (S09, L = 225, class/area Dkc/220 on 09 December), and Region 979 (N07, L = 329, class/area Hax/080 on 09 December). Region 977 produced occasional subflares before it declined to plage on 07 December. Region 978 was numbered on 06 December and produced occasional subflares as it gradually developed during the remainder of the period. Region 979 also produced occasional subflares following its emergence on 08 December, then
departed the visible disk late on 09 December.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit reached high levels during 03 - 04 December.
The geomagnetic field was quiet throughout the period. ACE solar wind measurements indicated minor IMF, density, and velocity variations during the period. IMF Bt ranged from 0.3 to 9.2 nT while Bz ranged from +9.1 to -5.2 nT. Densities ranged from 1 to 12 p/cc. Velocities
ranged from 267 - 396 km/sec during the period.
Forecast of Solar and Geomagnetic Activity
12 December 2007 - 07 January 2008
Solar activity is expected to be very low to low. Isolated C-class flares are possible during 12 - 18 December and 01 - 07 January.
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 19 - 31 December.
The geomagnetic field is expected to be at quiet to unsettled levels during 12 - 16 December. Activity is expected to increase to unsettled to active levels during 17 - 19 December as a recurrent coronal hole high-speed stream disturbs the field. Minor storm levels are also expected on 17 December. Activity is expected to decrease to quiet to unsettled levels during 20 - 22 December as the high-speed stream gradually subsides. Activity is expected to
decrease to mostly quiet levels for the rest of the period.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2007 Dec 11 1854 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/wwire.html
#
# 27-day Space Weather Outlook Table
# Issued 2007 Dec 11
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2007 Dec 12 85 10 3
2007 Dec 13 80 5 2
2007 Dec 14 80 5 2
2007 Dec 15 80 5 2
2007 Dec 16 80 10 3
2007 Dec 17 80 20 5
2007 Dec 18 75 15 4
2007 Dec 19 70 15 4
2007 Dec 20 70 10 3
2007 Dec 21 70 10 3
2007 Dec 22 70 10 3
2007 Dec 23 75 8 3
2007 Dec 24 75 5 2
2007 Dec 25 75 5 2
2007 Dec 26 75 5 2
2007 Dec 27 75 5 2
2007 Dec 28 75 5 2
2007 Dec 29 75 5 2
2007 Dec 30 75 5 2
2007 Dec 31 75 5 2
2008 Jan 01 75 5 2
2008 Jan 02 80 5 2
2008 Jan 03 80 5 2
2008 Jan 04 85 5 2
2008 Jan 05 85 5 2
2008 Jan 06 85 5 2
2008 Jan 07 85 10 3
(NOAA)