Product: Weekly Highlights and Forecasts:Issued: 2008 Sep 09 2151 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact:
# http://www.swpc.noaa.gov/weekly.html
# Weekly Highlights and Forecasts
Highlights of Solar and Geomagnetic Activity
01 - 07 September 2008
Solar activity was very low. No flares were detected. The visible disk was spotless.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit reached high levels during 04 - 07 September.
Geomagnetic field activity was at predominantly quiet levels during 01 - 03 September. Activity increased to major storm levels on 04 September. Activity decreased to quiet to unsettled levels during 05 - 07 September. ACE solar wind measurements indicated a co-rotating interaction region (CIR) occurred on 03 September in advance of a recurrent coronal hole high-speed stream (HSS). Solar wind changes associated with the CIR included increased plasma densities (peak 27 p/cc at 03/0402 UTC) and a gradual increase in velocities.
Interplanetary magnetic field (IMF) changes during the CIR included an increase in Bt (peak 16 nT at 03/0551 UTC) and intermittent periods of southward Bz (minimum -10 nT at 03/0714 UTC). The HSS commenced on 04 September and continued through the remainder of the
period. Velocities ranged from 462 to 658 km/sec during the HSS. IMF activity during the HSS included variable Bz (range + 07 to - 06 nT) and Bt (range 01 to 07 nT). The HSS began to gradually subside on 07 September.
Forecast of Solar and Geomagnetic Activity
10 September - 06 October 2008
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 reach high levels during 10 - 12 September, 15 - 22 September, and 01 - 06 October.
Geomagnetic field activity is expected to be at quiet levels during 08 - 12 September. Activity is expected to increase to unsettled levels during 13 September. Activity is expected to increase to
active to minor storm levels on 14 September due to a recurrent coronal hole high-speed stream. Activity is expected to decrease to unsettled levels during 15 - 16 September as the high-speed stream subsides. Quiet conditions are expected during 17 - 29 September. Activity is expected to increase to unsettled levels on 30 September. A further increase to active to minor storm levels is expected during 01 - 02 October due to a recurrent coronal hole high-speed stream. Activity is expected to decrease to unsettled levels during 03 - 04 October as the high-speed stream subsides. Quiet conditions are expected during 05 - 06 October.
Product: 27-day Space Weather Outlook Table 27DO.txt:Issued: 2008 Sep 09 2152 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 Sep 09
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2008 Sep 10 66 5 2
2008 Sep 11 66 5 2
2008 Sep 12 66 5 2
2008 Sep 13 66 8 3
2008 Sep 14 66 20 5
2008 Sep 15 66 12 4
2008 Sep 16 66 8 3
2008 Sep 17 66 5 2
2008 Sep 18 66 5 2
2008 Sep 19 66 5 2
2008 Sep 20 66 5 2
2008 Sep 21 66 5 2
2008 Sep 22 66 5 2
2008 Sep 23 66 5 2
2008 Sep 24 66 5 2
2008 Sep 25 66 5 2
2008 Sep 26 66 5 2
2008 Sep 27 66 5 2
2008 Sep 28 66 5 2
2008 Sep 29 66 5 2
2008 Sep 30 66 8 3
2008 Oct 01 66 20 5
2008 Oct 02 66 15 4
2008 Oct 03 66 10 3
2008 Oct 04 66 8 3
2008 Oct 05 66 5 2
2008 Oct 06 66 5 2
(NOAA)
