[Ips-dhfpr] SWS Daily HF Prop Report - 20 July 22 issued 2330 UT on 20 Jul 2022 [SEC=OFFICIAL]
Regional Warning Centre
rwc at ips.gov.au
Thu Jul 21 09:30:53 EST 2022
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 JULY 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (20 JULY)
Date T index Conditions
20 Jul 68 Normal
Flares: none.
MUFs:
Cocos Island Region:
Enhanced by 15% during local day.
Depressed by 20% during local night.
Niue Island Region:
Enhanced by 15% during local day.
Depressed by 25% during local night.
Enhanced by 35% after local dawn.
Northern Australian Region:
Near predicted monthly values during local day.
Depressed by 15% during local night.
Southern Australian Region:
Near predicted monthly values.
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
Jun 60
Jul 65
Aug 67
2. FORECAST (21 JULY - 23 JULY)
Date T index Conditions MUFs
21 Jul 65 Normal Near predicted monthly values
22 Jul 60 Normal-fair Near predicted monthly values
23 Jul 60 Normal-fair Near predicted monthly values
COMMENT: SWS SWF HF Communications Warning 56 was issued on 18
July and is current for 18-21 Jul. Maximum usable frequencies
(MUFs) on UT day 20-Jul were near monthly predicted values. Spread-F
was observed across the Australian region during local night
hours. MUFs are generally expected to be near monthly predicted
values over 21-23 Jul, mild degradations are possible from 22-Jul
due to an anticipated increase in geomagnetic activity. Shortwave
fadeouts are possible.
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For an explanation of some of the terms in this report, go to
https://www.sws.bom.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.
Space Weather Services email: asfc at bom.gov.au
Bureau of Meteorology
PO Box 1386 WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010 fax: +61 2 9213 8060
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