Tuesday, March 17, 2009

Weekly Propagation Forecast Bulletins

Product: Weekly Highlights and Forecasts
:Issued: 2009 Mar 17 2111 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
09 - 15 March 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 during 9 - 13 March. High levels were observed on 14 - 15 March.

Geomagnetic field activity was at predominantly quiet levels during 09 - 12 March. Activity increased to unsettled to minor storm levels on 13 March. Quiet to active conditions prevailed on 14 March through mid-day on 15 March, when activity returned to quiet levels. ACE solar wind data indicated the activity was due to a coronal hole high-speed stream (CH HSS). Velocities increased to a maximum of 587 km/s at 13/2111 UTC and then gradually decreased to the end of the period, with a velocity of 435 km/s at 15/2359 UTC. During this period, the interplanetary magnetic field Bt increased to a maximum of 20 nT at 12/2147 UTC, and Bz reached a minimum of -11 nT at 13/0108 UTC.

Forecast of Solar and Geomagnetic Activity
18 March - 13 April 2009

Solar activity is expected to be at very low levels.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is expected to remain at high levels through 18 March. Normal flux levels are expected during the rest of the period.

Geomagnetic field activity is expected to be at predominantly quiet levels through 08 April. Activity is expected to increase to unsettled to active levels during 09 - 10 April, with a chance for minor storm periods at high latitudes due to a recurrent CH HSS. Mostly quiet activity is expected for the rest of the period.

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2009 Mar 17 2113 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact: www.swpc.noaa.gov/wwire.html
# 27-day Space Weather Outlook Table
# Issued 2009 Mar 17
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2009 Mar 18 70 5 2
2009 Mar 19 70 5 2
2009 Mar 20 70 5 2
2009 Mar 21 70 5 2
2009 Mar 22 70 5 2
2009 Mar 23 70 5 2
2009 Mar 24 70 5 2
2009 Mar 25 70 5 2
2009 Mar 26 70 5 2
2009 Mar 27 70 5 2
2009 Mar 28 70 5 2
2009 Mar 29 70 5 2
2009 Mar 30 70 5 2
2009 Mar 31 70 5 2
2009 Apr 01 70 5 2
2009 Apr 02 70 5 2
2009 Apr 03 70 5 2
2009 Apr 04 70 5 2
2009 Apr 05 70 5 2
2009 Apr 06 70 5 2
2009 Apr 07 70 5 2
2009 Apr 08 70 5 2
2009 Apr 09 70 15 4
2009 Apr 10 70 10 3
2009 Apr 11 70 5 2
2009 Apr 12 70 5 2
2009 Apr 13 70 5 2
(NOAA)