Product: Weekly Highlights and Forecasts
:Issued: 2011 Aug 30 1656 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
:Issued: 2011 Aug 30 1656 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 22 - 28 August 2011
Solar activity was at very low to low levels. Region 1271 (N16, L=059, class/area Ehc/290 on 18 August) produced four low-level C-class flares during the period. All other regions on the disk were relatively stable and quiet. There were no Earth-directed CMEs
observed during the period.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at normal to moderate levels during the entire period.
Geomagnetic field activity was at quiet to unsettled levels on 22 - 25 August due to a weak coronal hole high speed stream (CH HSS). Activity decreased to mostly quiet levels for the remainder of the period.
Forecast of Solar and Geomagnetic Activity 31 August - 26 September 2011
Solar activity is expected to be very low to low throughout the
forecast period.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at normal to moderate levels from 31 August - 03 September. The flux is expected to increase to moderate to high levels during 04 - 09 September due to CH HSS effects. Normal to moderate flux levels are expected during 10 - 11 September. A return to moderate to high flux levels is expected on 13 - 14 September following a second CH HSS. Normal to moderate levels are expectedfrom 15 - 25 September. Moderate to high flux levels are expected on 26 September due to effects of another CH HSS.
Geomagnetic field activity is expected to be at mostly quiet levels during 31 August - 02 September. Activity is expected to increase to quiet to unsettled levels, with isolated active periods, during 03 - 05 September as a CH HSS disturbs the field. Quiet levels are forecast for 06 - 10 September. An increase to quiet to unsettled levels is expected during 11 - 12 September due to another CH HSS. Predominately quiet levels are expected for the remainder of the period with the exception of 18 - 19 September and 24 - 25 September, when quiet to unsettled levels are expected due to recurrent CH HSS effects.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2011 Aug 30 1656 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact: www.swpc.noaa.gov/wwire.html
#
# 27-day Space Weather Outlook Table
# Issued 2011-08-30
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2011 Aug 31 95 5 2
2011 Sep 01 95 5 2
2011 Sep 02 95 5 2
2011 Sep 03 95 10 3
2011 Sep 04 95 8 3
2011 Sep 05 95 5 2
2011 Sep 06 92 5 2
2011 Sep 07 86 5 2
2011 Sep 08 85 5 2
2011 Sep 09 85 5 2
2011 Sep 10 90 5 2
2011 Sep 11 92 8 3
2011 Sep 12 95 12 3
2011 Sep 13 100 8 3
2011 Sep 14 100 5 2
2011 Sep 15 100 5 2
2011 Sep 16 103 5 2
2011 Sep 17 103 5 2
2011 Sep 18 105 7 2
2011 Sep 19 105 7 2
2011 Sep 20 105 5 2
2011 Sep 21 105 5 2
2011 Sep 22 105 5 2
2011 Sep 23 103 5 2
2011 Sep 24 100 7 2
2011 Sep 25 100 7 2
2011 Sep 26 98 5 2
(NOAA)
Solar activity was at very low to low levels. Region 1271 (N16, L=059, class/area Ehc/290 on 18 August) produced four low-level C-class flares during the period. All other regions on the disk were relatively stable and quiet. There were no Earth-directed CMEs
observed during the period.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at normal to moderate levels during the entire period.
Geomagnetic field activity was at quiet to unsettled levels on 22 - 25 August due to a weak coronal hole high speed stream (CH HSS). Activity decreased to mostly quiet levels for the remainder of the period.
Forecast of Solar and Geomagnetic Activity 31 August - 26 September 2011
Solar activity is expected to be very low to low throughout the
forecast period.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at normal to moderate levels from 31 August - 03 September. The flux is expected to increase to moderate to high levels during 04 - 09 September due to CH HSS effects. Normal to moderate flux levels are expected during 10 - 11 September. A return to moderate to high flux levels is expected on 13 - 14 September following a second CH HSS. Normal to moderate levels are expectedfrom 15 - 25 September. Moderate to high flux levels are expected on 26 September due to effects of another CH HSS.
Geomagnetic field activity is expected to be at mostly quiet levels during 31 August - 02 September. Activity is expected to increase to quiet to unsettled levels, with isolated active periods, during 03 - 05 September as a CH HSS disturbs the field. Quiet levels are forecast for 06 - 10 September. An increase to quiet to unsettled levels is expected during 11 - 12 September due to another CH HSS. Predominately quiet levels are expected for the remainder of the period with the exception of 18 - 19 September and 24 - 25 September, when quiet to unsettled levels are expected due to recurrent CH HSS effects.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2011 Aug 30 1656 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact: www.swpc.noaa.gov/wwire.html
#
# 27-day Space Weather Outlook Table
# Issued 2011-08-30
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2011 Aug 31 95 5 2
2011 Sep 01 95 5 2
2011 Sep 02 95 5 2
2011 Sep 03 95 10 3
2011 Sep 04 95 8 3
2011 Sep 05 95 5 2
2011 Sep 06 92 5 2
2011 Sep 07 86 5 2
2011 Sep 08 85 5 2
2011 Sep 09 85 5 2
2011 Sep 10 90 5 2
2011 Sep 11 92 8 3
2011 Sep 12 95 12 3
2011 Sep 13 100 8 3
2011 Sep 14 100 5 2
2011 Sep 15 100 5 2
2011 Sep 16 103 5 2
2011 Sep 17 103 5 2
2011 Sep 18 105 7 2
2011 Sep 19 105 7 2
2011 Sep 20 105 5 2
2011 Sep 21 105 5 2
2011 Sep 22 105 5 2
2011 Sep 23 103 5 2
2011 Sep 24 100 7 2
2011 Sep 25 100 7 2
2011 Sep 26 98 5 2