Weekly Propagation Forecast Bulletins

Product: Weekly Highlights and Forecasts:Issued: 2009 Sep 15 2021 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC webcontact: www.swpc.noaa.gov/weekly.html
#
# Weekly Highlights and Forecasts
Highlights of Solar and Geomagnetic Activity
07 - 13 September 2009

Solar activity was very low. A single low-level B flare occurred on 08 September. 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 quiet levels during the period. Solar wind velocities at ACE ranged from 279 to 372 km/s. Interplanetary magnetic field activity showed intermittent periods of southward Bz from approximately 11/0557 UTC through the end of the period. Density reached a maximum of 10 p/cc at 13/1605 UTC.

Forecast of Solar and Geomagnetic Activity
16 September - 12 October 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 levels during the period.

Geomagnetic field activity is expected to be at quiet to unsettled levels, with isolated active periods during 16 - 17 September due to a recurrent coronal hole high-speed stream (CH HSS). Predominantly quiet levels are expected during 18 - 25 September. Conditions quiet to unsettled conditions, with isolated active levels are expected on 26 September due to a recurrent CH HSS. Activity will decrease to predominantly quiet levels during 27 September - 11 October. Quiet
levels, with isolated unsettled periods, are expected on 12 October, due to a recurrent CH HSS.

Product: 27-day Space Weather Outlook Table:Issued: 2009 Sep 15 2021 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 Sep 15
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2009 Sep 16 69 7 3
2009 Sep 17 69 7 3
2009 Sep 18 69 5 2
2009 Sep 19 70 5 2
2009 Sep 20 70 5 2
2009 Sep 21 72 5 2
2009 Sep 22 72 5 2
2009 Sep 23 72 5 2
2009 Sep 24 72 5 2
2009 Sep 25 72 5 2
2009 Sep 26 72 12 4
2009 Sep 27 72 5 2
2009 Sep 28 72 5 2
2009 Sep 29 70 5 2
2009 Sep 30 70 5 2
2009 Oct 01 70 5 2
2009 Oct 02 69 5 2
2009 Oct 03 69 5 2
2009 Oct 04 69 5 2
2009 Oct 05 69 5 2
2009 Oct 06 69 5 2
2009 Oct 07 69 5 2
2009 Oct 08 69 5 2
2009 Oct 09 69 5 2
2009 Oct 10 69 6 2
2009 Oct 11 69 5 2
2009 Oct 12 69 7 3
(NOAA)

Two new sunspot groups ?

Posted at www.wcflunatall.com/nz4o1.htm
and www.wcflunatall.com/nz4o4.htm

There are two very small sunspots trying to emerge in the SW quadrant of the sun. We can only hope against hope that they emerge and get assigned numbers 11026 and 11027.
(Thomas F. Giella, NZ4O, Lakeland, FL, USA)
nz4o@arrl.net
eList Owner/Moderator

LF/MF/HF/VHF/UHF Frequency Radiowave Propagation Email Reflector:
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NZ4O Daily Solar Space Weather & Geomagnetic Data Archive:
www.wcflunatall.com/nz4o1.htm
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www.wcflunatall.com/nz4o3.htm
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www.wcflunatall.com/nz4o5.htm
NZ4O Solar Space Weather & Geomagnetic Data In Graphic & Image Format:
www.wcflunatall.com/nz4o2.htm
NZ4O Solar Cycle 24 Forecast Discussion & Archive:
www.wcflunatall.com/nz4o4.htm