Friday, August 28, 2009

Weekly Propagation Forecast Bulletins

Product: Weekly Highlights and Forecasts
:Issued: 2009 Aug 25 2221 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
17 - 23 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 17 - 21 August. Fluxes increased to normal to moderate levels during 22 - 23 August.

Geomagnetic field activity was at quiet levels during 17 - 18 August. Activity increased to quiet to active levels on 19 August, with a single minor storm period observed at high latitudes. Activity decreased to quiet to active levels during 20 - 21 August, with isolated active periods at high latitudes. ACE solar wind data indicated the elevated conditions were due to a recurrent coronal hole high-speed stream (CH HSS). Predominantly quiet levels returned during 22 - 23 August. Velocities at ACE increased from a low of 269 km/s at 17/0758 UTC to a high of 594 km/s at 20/2245 UTC before gradually decreasing to 421 km/s at the end of the period.
Interplanetary magnetic field activity associated with the CH HSS included increased Bt (maximum of 12 nT at 19/1551 UTC) and southward Bz (maximum of -10 nT at 19/1135 UTC).

Forecast of Solar and Geomagnetic Activity
26 August - 21 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 normal to moderate flux levels during the period.

Geomagnetic field activity is expected to be at mostly quiet levels during the period. Isolated unsettled levels are expected on 02 September, 09 September, and 16 - 17 September due to recurrent effects.

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2009 Aug 25 2221 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 25
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
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 7 2
2009 Aug 31 68 5 2
2009 Sep 01 68 5 2
2009 Sep 02 68 8 3
2009 Sep 03 68 5 2
2009 Sep 04 68 5 2
2009 Sep 05 68 8 3
2009 Sep 06 68 5 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
2009 Sep 15 68 7 3
2009 Sep 16 68 7 3
2009 Sep 17 68 5 2
2009 Sep 18 68 5 2
2009 Sep 19 68 5 2
2009 Sep 20 68 5 2
2009 Sep 21 68 5 2
(NOAA)

Propagation Forecast available online
The NZ4O Daily LF/MF/HF/6M Frequency Radiowave Propagation Forecast #2009-30
has been published on Friday 08/28/2009 at 1300 UTC, valid 0000 UTC Saturday
08/29/2009 through 2359 UTC Friday 09/04/2009 at
http://www.wcflunatall.com/nz4o3.htm .
Thomas F. Giella, NZ4O
Lakeland, FL, USA
nz4o@arrl.net

NZ4O Daily Solar Space Weather & Geomagnetic Data Archive:
http://www.wcflunatall.com/nz4o1.htm

NZ4O Daily LF/MF/HF/6M Frequency Radiowave Propagation Forecast & Archive:
http://www.wcflunatall.com/nz4o3.htm

NZ4O 160 Meter Radio Propagation Theory Notes:
http://www.wcflunatall.com/nz4o5.htm

NZ4O Solar Space Weather & Geomagnetic Data In Graphic & Image Format:
http://www.wcflunatall.com/nz4o2.htm

NZ4O Solar Cycle 24 Forecast Discussion & Archive:
http://www.wcflunatall.com/nz4o4.htm

NZ4O LF/MF/HF/VHF Frequency Radiowave Propagation Email Reflector:
http://lists.contesting.com/mailman/listinfo/spaceweather

NZ4O Harmful Man Induced Climate Change (Global Warming) Refuted:
http://www.wcflunatall.com/globalwarminglie.htm