Weekly Highlights and Forecasts:
Issued: 2009 Sep 01 2151 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
# 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 August 2009
Solar activity was very low. No flares were observed. The visible disk was spotless.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at moderate levels during 24 - 27 August. Fluxes decreased to normal levels during 28 - 30 August.
Geomagnetic field activity was at quiet levels during 24 - 29 August. Activity increased to quiet to active levels on 30 August, with a single major storm period observed at high latitudes late on the 30th. Activity decreased to quiet levels by 31 August. ACE solar wind data indicated the elevated conditions were due to a recurrent coronal hole high-speed stream (CH HSS). Velocities at ACE increased from a low of about 300 km/s at 25/1856 UTC to a high of near 490 km/s at 30/1730 UTC before gradually decreasing to 450 km/s by the end of the period. Interplanetary magnetic field activity associated with the CH HSS included increased Bt (maximum of 12 nT at 30/0927 UTC) and southward Bz (maximum of -11 nT at 30/1422 UTC).
Forecast of Solar and Geomagnetic Activity
02 - 28 September 2009
Solar activity is expected to be very low.
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 flux levels during the period with a chance for high levels during 02 - 04 September.
Geomagnetic field activity is expected to be at mostly quiet levels during the period. Isolated unsettled levels are expected on 02 - 05 and 14 - 17 September with isolated active levels possible on 26 September, all due to recurrent CH HSS effects.
Product: 27-day Space Weather Outlook Table
:Issued: 2009 Sep 01 2151 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
#
Highlights of Solar and Geomagnetic Activity
24 - 30 August 2009
Solar activity was very low. No flares were observed. The visible disk was spotless.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at moderate levels during 24 - 27 August. Fluxes decreased to normal levels during 28 - 30 August.
Geomagnetic field activity was at quiet levels during 24 - 29 August. Activity increased to quiet to active levels on 30 August, with a single major storm period observed at high latitudes late on the 30th. Activity decreased to quiet levels by 31 August. ACE solar wind data indicated the elevated conditions were due to a recurrent coronal hole high-speed stream (CH HSS). Velocities at ACE increased from a low of about 300 km/s at 25/1856 UTC to a high of near 490 km/s at 30/1730 UTC before gradually decreasing to 450 km/s by the end of the period. Interplanetary magnetic field activity associated with the CH HSS included increased Bt (maximum of 12 nT at 30/0927 UTC) and southward Bz (maximum of -11 nT at 30/1422 UTC).
Forecast of Solar and Geomagnetic Activity
02 - 28 September 2009
Solar activity is expected to be very low.
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 flux levels during the period with a chance for high levels during 02 - 04 September.
Geomagnetic field activity is expected to be at mostly quiet levels during the period. Isolated unsettled levels are expected on 02 - 05 and 14 - 17 September with isolated active levels possible on 26 September, all due to recurrent CH HSS effects.
Product: 27-day Space Weather Outlook Table:Issued: 2009 Sep 01 2151 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 2009 Sep 01
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2009 Sep 02 68 8 3
2009 Sep 03 69 10 3
2009 Sep 04 69 7 3
2009 Sep 05 69 7 3
2009 Sep 06 68 5 2
2009 Sep 07 68 5 2
2009 Sep 08 68 5 2
2009 Sep 09 68 5 2
2009 Sep 10 68 5 2
2009 Sep 11 68 5 2
2009 Sep 12 68 5 2
2009 Sep 13 68 5 2
2009 Sep 14 68 7 3
2009 Sep 15 68 7 3
2009 Sep 16 68 5 2
2009 Sep 17 68 8 3
2009 Sep 18 68 5 2
2009 Sep 19 68 5 2
2009 Sep 20 68 5 2
2009 Sep 21 68 5 2
2009 Sep 22 68 5 2
2009 Sep 23 68 5 2
2009 Sep 24 68 5 2
2009 Sep 25 68 5 2
2009 Sep 26 68 12 4
2009 Sep 27 68 5 2
2009 Sep 28 68 5 2
(NOAA)
# Issued 2009 Sep 01
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2009 Sep 02 68 8 3
2009 Sep 03 69 10 3
2009 Sep 04 69 7 3
2009 Sep 05 69 7 3
2009 Sep 06 68 5 2
2009 Sep 07 68 5 2
2009 Sep 08 68 5 2
2009 Sep 09 68 5 2
2009 Sep 10 68 5 2
2009 Sep 11 68 5 2
2009 Sep 12 68 5 2
2009 Sep 13 68 5 2
2009 Sep 14 68 7 3
2009 Sep 15 68 7 3
2009 Sep 16 68 5 2
2009 Sep 17 68 8 3
2009 Sep 18 68 5 2
2009 Sep 19 68 5 2
2009 Sep 20 68 5 2
2009 Sep 21 68 5 2
2009 Sep 22 68 5 2
2009 Sep 23 68 5 2
2009 Sep 24 68 5 2
2009 Sep 25 68 5 2
2009 Sep 26 68 12 4
2009 Sep 27 68 5 2
2009 Sep 28 68 5 2
(NOAA)