[Ips-dhfpr] IPS Daily HF Prop Report - 25 September 15 issued 2330 UT on 25 Sep 2015
Regional Warning Centre
rwc at ips.gov.au
Sat Sep 26 09:30:56 EST 2015
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/25 SEPTEMBER 2015 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (25 SEPTEMBER)
Date T index Conditions
25 Sep 51 Normal
Flares: none.
MUFs:
Cocos Island Region:
Enhanced by 15% during local day.
Near predicted monthly values during local night.
Niue Island Region:
Depressed by 15% during local day.
Depressed by 25% during local night.
Northern Australian Region:
Depressed by 20% during local day.
Near predicted monthly values during local night.
Southern Australian Region:
Depressed by 15% during local day.
Near predicted monthly values during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
PCA Event : No event.
Monthly T index:
Month T index
Aug 46
Sep 75
Oct 73
2. FORECAST (26 SEPTEMBER - 28 SEPTEMBER)
Date T index Conditions MUFs
26 Sep 55 Normal Depressed 15 to 20%/near predicted
monthly values
27 Sep 55 Normal Depressed 15 to 20%/near predicted
monthly values
28 Sep 50 Normal Depressed 15 to 20%/near predicted
monthly values
COMMENT: Mildly degraded HF conditions were observed during 25
September over the Australasian region due to low levels of ionising
radiation. There was continuing recovery in all regions over
the poor ionospheric support for HF of the previous week. Elevated
geomagnetic activity is anticipated days one and two of the forecast
period which will negatively impact HF propagation conditions,
mainly in the Antarctic region.
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For an explanation of some of the terms in this report, go to
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Glossary on Solar Terrestrial Terms.
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