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Tuesday, December 04, 2007

Weekly Propagation Forecast Bulletins


Product: Weekly Highlights and Forecasts
:Issued: 2007 Dec 04 1954 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
26 November - 02 December 2007

Solar activity was very low. Region 977 (S05, L = 290, class/area Bxo/020 on 02 December) produced several subflares during 01 - 02 December. Region 977 emerged on 01 December and gradually developed during the remainder of the period, but remained simply structured.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached high levels throughout the period.

The geomagnetic field was quiet to unsettled during 26 - 27 November. Activity decreased to quiet levels for the rest of the period. ACE solar wind measurements indicated a gradual decrease in velocities during 26 - 30 November as a recurrent coronal hole high-speed
stream subsided. Peak solar wind velocity was 655 km/sec at 26/0517 UTC. Velocities decreased to as low as 310 km/sec by the end of the period. Minor IMF variations occurred during the period with Bt in the 01 to 06 nT range and Bz in the +5 to -4 nT range.

Forecast of Solar and Geomagnetic Activity
05 - 31 December 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 19 - 31 December.

The geomagnetic field is expected to be at mostly quiet levels during 05 - 16 December. Activity is expected to increase to unsettled to active levels during 17 - 19 December due to recurrent coronal hole effects. Minor storm levels are also expected on 17 December.
Activity is expected to decrease to quiet to unsettled levels during 20 - 23 December as coronal hole effects subside. Activity is expected to decrease to quiet levels for the balance of the period

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2007 Dec 04 1954 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 Dec 04
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2007 Dec 05 73 5 2
2007 Dec 06 73 5 2
2007 Dec 07 73 5 2
2007 Dec 08 73 5 2
2007 Dec 09 73 5 2
2007 Dec 10 72 5 2
2007 Dec 11 72 10 3
2007 Dec 12 72 5 2
2007 Dec 13 72 5 2
2007 Dec 14 70 5 2
2007 Dec 15 70 5 2
2007 Dec 16 70 5 2
2007 Dec 17 70 20 5
2007 Dec 18 70 15 4
2007 Dec 19 70 15 4
2007 Dec 20 70 10 3
2007 Dec 21 70 10 3
2007 Dec 22 70 10 3
2007 Dec 23 70 8 3
2007 Dec 24 70 5 2
2007 Dec 25 70 5 2
2007 Dec 26 70 5 2
2007 Dec 27 72 5 2
2007 Dec 28 72 5 2
2007 Dec 29 72 5 2
2007 Dec 30 72 5 2
2007 Dec 31 72 5 2
(NOAA)