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Tuesday, October 16, 2007

Weekly Propagation Forecast Update


Product: Weekly Highlights and Forecasts
:Issued: 2007 Oct 16 1653 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
08 - 14 October 2007

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 08 - 12 October.

The geomagnetic field was quiet throughout the period. However, ACE solar wind data indicated an away (+) to toward (-) solar sector boundary change early on 11 October. A co-rotating interaction region (CIR) commenced late on 11 October in advance of a relatively weak and recurrent coronal hole wind stream. IMF changes associated with the CIR included a period of increased Bt (peak 8.9 nT at 12/1354 UTC) and increased Bz variability (minimum -8.1 nT at 12/1725 UTC).
Proton densities reached a peak of 15.6 p/cc at 13/0622 UTC in advance of the stream. Velocities increased to a maximum of 365.9 km/sec at 13/0826 UTC.

Forecast of Solar and Geomagnetic Activity
17 October - 12 November 2007

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 21 October - 08 November.

Geomagnetic activity is expected to be at quiet to unsettled levels during 17 - 19 October. An increase to unsettled to active levels is forecast for 20 October as a recurrent coronal hole high-speed stream affects the field. Activity is expected to decrease to quiet to unsettled levels during 21 - 23 October as the high-speed stream subsides. Activity is expected to increase to unsettled to active levels during 24 - 27 October with minor storm conditions likely on 26
October due to another recurrent coronal hole high-speed stream. Activity is expected to decrease to quiet to unsettled levels during 28 - 29 October. Activity is expected to increase to unsettled to active levels during 30 - 31 October as another recurrent coronal hole high-speed stream affects the field. Quiet conditions are expected for the rest of the period.

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2007 Oct 16 1653 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 Oct 16
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2007 Oct 17 67 10 3
2007 Oct 18 67 10 3
2007 Oct 19 67 12 3
2007 Oct 20 67 15 4
2007 Oct 21 67 10 3
2007 Oct 22 67 5 2
2007 Oct 23 67 5 2
2007 Oct 24 67 15 4
2007 Oct 25 67 15 4
2007 Oct 26 67 25 5
2007 Oct 27 67 15 4
2007 Oct 28 67 5 2
2007 Oct 29 67 8 3
2007 Oct 30 67 15 4
2007 Oct 31 68 10 3
2007 Nov 01 68 5 2
2007 Nov 02 68 5 2
2007 Nov 03 68 5 2
2007 Nov 04 68 5 2
2007 Nov 05 68 5 2
2007 Nov 06 68 5 2
2007 Nov 07 68 5 2
2007 Nov 08 68 5 2
2007 Nov 09 68 5 2
2007 Nov 10 67 5 2
2007 Nov 11 67 5 2
2007 Nov 12 67 5 2
(NOAA)