Tuesday, April 07, 2009

Weekly Propagation Forecast Bulletins

:Issued: 2009 Apr 07 1921 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact: www.swpc.noaa.gov/weekly.html
#
# Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity
30 March - 05 April 2009

Solar activity was very low. No flares were observed. The visible disk was spotless.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at normal levels throughout the period.

Geomagnetic field activity was at mostly quiet levels throughout the summary period. ACE solar wind observations showed frequent minor variations in the interplanetary magnetic field (IMF). IMF Bz varied in the + 5 to -5 nT range while IMF Bt ranged from 1 - 5 nT. Solar wind velocities ranged from 249 - 441 km/sec during the period.

Forecast of Solar and Geomagnetic Activity
08 April - 04 May 2009

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 increase to high levels during 10-14 April. Normal flux levels are expected during the rest of the period.

Geomagnetic field activity is expected to be at mostly quiet levels through 08 April. Activity is expected to increase to unsettled to active levels during 09 - 10 April due to a recurrent coronal hole high-speed stream. Activity is expected to decrease to quiet levels during 11 - 19 April. Activity is expected to increase to quiet to unsettled levels during 21 - 22 April. Activity is expected to decrease to mostly quiet levels during 23 April - 04 May.

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2009 Apr 07 1922 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and webSWPC contact; www.swpc.noaa.gov/wwire.html
#
# 27-day Space Weather Outlook Table
# Issued 2009 Apr 07

#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2009 Apr 08 70 8 3
2009 Apr 09 70 15 4
2009 Apr 10 70 8 3
2009 Apr 11 70 5 2
2009 Apr 12 70 5 2
2009 Apr 13 70 5 2
2009 Apr 14 70 5 2
2009 Apr 15 70 5 2
2009 Apr 16 70 5 2
2009 Apr 17 70 5 2
2009 Apr 18 70 5 2
2009 Apr 19 70 5 2
2009 Apr 20 70 5 2
2009 Apr 21 70 8 3
2009 Apr 22 70 8 3
2009 Apr 23 72 5 2
2009 Apr 24 72 5 2
2009 Apr 25 72 5 2
2009 Apr 26 72 5 2
2009 Apr 27 72 5 2
2009 Apr 28 72 5 2
2009 Apr 29 72 5 2
2009 Apr 30 70 8 3
2009 May 01 70 5 2
2009 May 02 70 5 2
2009 May 03 70 5 2
2009 May 04 70 5 2
(NOAA)