Product: Weekly Highlights and Forecasts:Issued: 2008 Aug 19 2119 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
11 - 17 August 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 11 - 13 August and 15 - 16 August.
Geomagnetic field activity was at quiet to unsettled levels during the period. Brief periods of active levels were also observed at high latitudes on 11, 14, and 17 August. ACE solar wind observations indicated a recurrent coronal hole high-speed stream was in progress at the start of the period. Velocities reached a maximum of 657 km/sec at 11/0500 UTC, then gradually decreased through 16 August with a minimum velocity of 310 km/sec observed at 16/1555 UTC. Minor variations were noted in the IMF as velocities decreased. A co-rotating interaction region (CIR) commenced late on 16 August associated with a minor increase in velocities (peak 402 km/sec at 17/2226 UTC), increased proton densities (peak 29 p/cc at 16/2211 UTC), intermittent periods of southward IMF Bz (minimum - 7 nT at 16/2122 UTC), and increased IMF Bt (peak 10 nT at 16/2059 UTC).
Forecast of Solar and Geomagnetic Activity
20 August - 15 September 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 20 - 23 August, 07 - 12 September, and 15 September.
Geomagnetic field activity is expected to be at unsettled to active levels during 20 August due to a recurrent coronal hole high-speed stream. Activity is expected to decrease to quiet levels during 21 August - 03 September. Activity is expected to increase to unsettled levels on 04 September. A further increase to active to minor storm levels is expected on 05 September due to a recurrent coronal hole high-speed stream. Activity is expected to decrease to quiet to
unsettled levels during 06 - 07 September as the high-speed stream subsides. Activity is expected to decrease to quiet levels during 08 - 11 September. Activity is expected to increase to unsettled to active levels during 12 - 14 September due to a recurrent coronal hole high-speed stream. Activity is expected to decrease to mostly quiet levels on 15 September as the high-speed stream subsides.
Product: 27-day Space Weather Outlook Table 27DO.txt:Issued: 2008 Aug 19 2119 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 2008 Aug 19
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2008 Aug 20 66 10 3
2008 Aug 21 66 5 2
2008 Aug 22 66 5 2
2008 Aug 23 66 5 2
2008 Aug 24 66 5 2
2008 Aug 25 66 5 2
2008 Aug 26 66 5 2
2008 Aug 27 66 5 2
2008 Aug 28 66 5 2
2008 Aug 29 66 5 2
2008 Aug 30 66 5 2
2008 Aug 31 66 5 2
2008 Sep 01 66 5 2
2008 Sep 02 66 5 2
2008 Sep 03 66 5 2
2008 Sep 04 66 8 3
2008 Sep 05 66 18 4
2008 Sep 06 66 12 3
2008 Sep 07 66 8 3
2008 Sep 08 66 5 2
2008 Sep 09 66 5 2
2008 Sep 10 66 5 2
2008 Sep 11 66 5 2
2008 Sep 12 66 8 3
2008 Sep 13 66 8 3
2008 Sep 14 66 20 5
2008 Sep 15 66 15 4
(NOAA)
