Friday, August 21, 2009

Weekly Propagation Forecast Bulletins

Product: Weekly Highlights and Forecasts
:Issued: 2009 Aug 20 2121 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 10 - 16 August 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 the period.

Geomagnetic field activity was at predominantly quiet levels during the period. Isolated periods of unsettled to active levels were observed at high latitudes on 12-13 August. Solar wind velocities at ACE ranged from 398 to 264 km/s during the period. Interplanetary magnetic field activity showed intermittent periods of southward Bz (maximum of -5 nT at 12/1151 UTC).

Forecast of Solar and Geomagnetic Activity
19 August - 14 September 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 be at high levels during 22-23 August. Normal to moderate flux levels are expected during the rest of the period.

Geomagnetic field activity is expected to be at unsettled to active levels, with a slight chance for minor storm levels on 19 August due to a recurrent coronal hole high-speed stream (CH HSS). Quiet to unsettled levels are expected on 20 August as the CH effects continue. Activity is expected to decrease to predominantly quiet levels during 21 August - 14 September, with isolated unsettled periods on 02 September and 09 - 10 September due to recurrent effects.

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2009 Aug 20 2121 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 Aug 18

# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2009 Aug 19 68 12 4
2009 Aug 20 68 7 3
2009 Aug 21 68 5 2
2009 Aug 22 68 5 2
2009 Aug 23 68 5 2
2009 Aug 24 68 5 2
2009 Aug 25 68 5 2
2009 Aug 26 68 5 2
2009 Aug 27 68 5 2
2009 Aug 28 68 5 2
2009 Aug 29 68 5 2
2009 Aug 30 68 5 2
2009 Aug 31 68 5 2
2009 Sep 01 68 5 2
2009 Sep 02 68 7 3
2009 Sep 03 68 5 2
2009 Sep 04 68 5 2
2009 Sep 05 68 7 3
2009 Sep 06 68 7 2
2009 Sep 07 68 5 2
2009 Sep 08 68 5 2
2009 Sep 09 68 5 2
2009 Sep 10 68 5 2
2009 Sep 11 68 5 2
2009 Sep 12 68 5 2
2009 Sep 13 68 5 2
2009 Sep 14 68 5 2
(NOAA)