Wednesday, July 23, 2008

Weekly Propagation Forecast Bulletins

Product: Weekly Highlights and Forecasts
:Issued: 2008 Jul 22 2324 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
14 - 20 July 2008
Solar activity was very low. No flares were detected. Region 1000 (S12, L = 179, class/area Bxo/020 on 19 July) was the only spot group on the disk during the period.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux was at high levels during 14 - 20 July.

Geomagnetic field activity was at quiet to unsettled levels during 14 - 16 July, though active to minor storm conditions were observed at high latitudes on 14 July. Activity decreased to quiet levels for the rest of the period. ACE solar wind data indicated Earth was under the influence of a waning recurrent coronal hole high-speed stream. Solar wind velocities gradually decreased from a high of 740 km/sec on 14 July to a low of 278 km/sec near the close of the period. Minor changes were noted in the interplanetary magnetic field during the period with Bz readings in the + 4 nT range and Bt in the 1 - 4 nT range.

Forecast of Solar and Geomagnetic Activity
23 July - 18 August 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 24 - 26 July and 09 - 17 August.

Geomagnetic field activity is expected to be at unsettled to active levels during 23 July with minor storm periods at high latitudes due to a recurrent coronal hole high speed stream. Activity is expected to decrease to quiet to unsettled levels on 24 July as coronal hole effects subside. Activity is expected to be at mostly quiet levels during 25 July - 06 August. Activity is expected to increase to unsettled levels on 07 August. A further increase to active levels is expected during 08 - 09 August with minor storm levels at high latitudes due to a recurrent coronal hole high-speed stream. Activity is expected to decrease to unsettled levels during 10 - 13 August as coronal hole effects subside. Quiet conditions are expected during 14 - 17 August. Activity is expected to increase to unsettled levels on the last day of the period.

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2008 Jul 22 2324 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 Jul 22
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2008 Jul 23 66 15 4
2008 Jul 24 66 10 3
2008 Jul 25 66 5 2
2008 Jul 26 66 5 2
2008 Jul 27 66 5 2
2008 Jul 28 66 5 2
2008 Jul 29 66 5 2
2008 Jul 30 66 5 2
2008 Jul 31 66 5 2
2008 Aug 01 66 8 3
2008 Aug 02 66 5 2
2008 Aug 03 66 5 2
2008 Aug 04 66 5 2
2008 Aug 05 66 5 2
2008 Aug 06 66 5 2
2008 Aug 07 66 10 3
2008 Aug 08 66 20 5
2008 Aug 09 66 15 4
2008 Aug 10 66 10 3
2008 Aug 11 66 10 3
2008 Aug 12 66 10 3
2008 Aug 13 66 8 3
2008 Aug 14 66 5 2
2008 Aug 15 66 5 2
2008 Aug 16 66 5 2
2008 Aug 17 66 5 2
2008 Aug 18 66 10 3
(NOAA)