Product: Weekly Highlights and Forecasts:Issued: 2009 Apr 21 2216 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
13 - 19 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 high levels on 13 - 14 April.
Geomagnetic field activity was at quiet levels during 13 - 15 April. Field activity increased to quiet to unsettled levels on 16 April, with an isolated active period observed at high latitudes, due to the influence of a coronal hole high-speed stream (CH HSS). ACE solar wind velocities increased from 303 km/s at 16/1351 UTC to a high of 547 km/s at 18/1921 UTC. During this period, the Bz component of the IMF varied between -8 nT and +10 nT. Field activity
decreased to quiet levels on 18 - 19 April, and solar wind velocities gradually decreased to 431 km/s at the end of the forecast period.
Forecast of Solar and Geomagnetic Activity
22 April - 18 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 08 - 11 May. Normal flux levels are expected during the rest of the period.
Geomagnetic field activity is expected to be at mostly quiet levels through 05 May. Activity is expected to increase to quiet to unsettled levels during 06 - 09 May, with active conditions possible on 06 May, due to a recurrent CH HSS. Activity is expected to decrease to predominantly quiet levels during 10 - 18 May.
Product: 27-day Space Weather Outlook Table 27DO.txt:Issued: 2009 Apr 21 2217 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 Apr 21
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2009 Apr 22 70 7 2
2009 Apr 23 70 5 2
2009 Apr 24 70 5 2
2009 Apr 25 70 5 2
2009 Apr 26 70 5 2
2009 Apr 27 70 5 2
2009 Apr 28 70 5 2
2009 Apr 29 70 5 2
2009 Apr 30 70 5 2
2009 May 01 70 5 2
2009 May 02 70 5 2
2009 May 03 70 5 2
2009 May 04 70 5 2
2009 May 05 70 5 2
2009 May 06 70 15 4
2009 May 07 70 8 3
2009 May 08 70 8 3
2009 May 09 70 8 3
2009 May 10 70 5 2
2009 May 11 70 5 2
2009 May 12 70 5 2
2009 May 13 70 5 2
2009 May 14 70 5 2
2009 May 15 70 5 2
2009 May 16 70 5 2
2009 May 17 70 5 2
2009 May 18 70 5 2
(NOAA)
