[Ips-dhfpr] IPS Daily HF Prop Report - 23 June 08
rwc
rwc at ips.gov.au
Tue Jun 24 09:42:18 EST 2008
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 23/2330Z JUNE 2008 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (23 JUNE)
Date T index Conditions
23 Jun -1 Normal
Flares: none.
MUFs:
Equatorial PNG/Niue Region:
Depressed by 15% during local day,
Depressed by 15% during local night.
Northern Australian Region:
Depressed by 15% during local day,
Near predicted monthly values during local night.
Southern Australian and New Zealand Region:
Near predicted monthly values during local day,
Enhanced by 20% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Enhanced by 25% over the UT day.
PCA Event : No event.
Predicted Monthly T index for June: 5
2. FORECAST (24 JUNE - 26 JUNE)
Date T index Conditions MUFs
24 Jun 0 Normal about 10% below predicted monthly
values
25 Jun 0 Normal about 10% below predicted monthly
values
26 Jun 4 Normal near predicted monthly values
COMMENT: Australasian region ionosphere was mostly normal over
the UT day. Spread-F was prevalent in the north at near and sub-equatorial
latitudes and at night at many mid-latitude stations. There were
sharp pre-dusk MUF enhancements followed by shallow night depressions
in the Equatorial/N.Aus region although on average MUFs were
down by 15% in this region. MUFs in the S.Aus/NZ/Antarctic regions
were mostly near or above predicted monthly values. Expect mostly
normal HF conditions with MUFs slightly below monthly values
24 and 25 Jun. A predicted small solar coronal hole (see geomagnetic
section) may slightly enhance conditions on the 26th.
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For an explanation of some of the terms in this report, go to
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.
IPS Radio and Space Services email: asfc at ips.gov.au
PO Box 1386 WWW: http://www.ips.gov.au
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