[Ips-dhfpr] SWS Daily HF Prop Report - 15 May 22 issued 2331 UT on 15 May 2022 [SEC=OFFICIAL]
Regional Warning Centre
rwc at ips.gov.au
Mon May 16 09:31:07 EST 2022
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/15 MAY 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (15 MAY)
Date T index Conditions
15 May 94 Normal
Flares Max Fadeout Freq. Sectors
M2.2 0008UT possible lower West Pacific
MUFs:
Cocos Island Region:
Enhanced by 40% during local day.
Enhanced by 25% during local night.
Niue Island Region:
Enhanced by 20% during local day.
Enhanced by 45% during local night.
Enhanced by 25% after local dawn.
Northern Australian Region:
Enhanced by 30% during local day.
Enhanced by 50% during local night.
Southern Australian Region:
Enhanced by 20% during local day.
Enhanced by 25% during local night.
Enhanced by 25% after local dawn.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Enhanced by 15% over the UT day.
PCA Event : No event.
Monthly T index:
Month T index
Apr 77
May 51
Jun 54
2. FORECAST (16 MAY - 18 MAY)
Date T index Conditions MUFs
16 May 80 Normal Near to 15% above predicted
monthly values
17 May 80 Normal Near to 15% above predicted
monthly values
18 May 80 Normal Near to 15% above predicted
monthly values
COMMENT: SWS SWF HF Communications Warning 43 was issued on 14
May and is current for 15-16 May. Maximum usable frequencies
(MUFs) on UT day 15-May were near monthly predicted values to
mildly enhanced. Spread-F was observed at Hobart during night
hours. MUFs are expected to be mostly near monthly predicted
values to slightly enhanced during 16-18 May, although there
is a chance that slight depressions may be observed at mid-high
latitudes due to geomagnetic disturbances. Short-wave fadeouts
are possible during this period.
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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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