[Ips-dhfpr] SWS Daily HF Prop Report - 16 July 22 issued 2330 UT on 16 Jul 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 JULY 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 JULY) 
Date   T index  Conditions    
16 Jul    85    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M1.1    0629UT  possible   lower  Mid East/Indian
  M1.4    1539UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Enhanced by 50% during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 25% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jun      60
Jul      65
Aug      67


2. FORECAST (17 JULY - 19 JULY)
Date   T index  Conditions       MUFs                              
17 Jul    85    Normal           Near to 15% above predicted 
                                 monthly values
18 Jul    85    Normal           Near to 15% above predicted 
                                 monthly values    
19 Jul    85    Normal-fair      Near to 15% above predicted 
                                 monthly values   

COMMENT: SWS SWF HF Communications Warning 55 was issued on 14 
July and is current for 15-17 Jul. Maximum usable frequencies 
(MUFs) on UT day 16-Jul were near monthly predicted values. Spread-F 
was observed across the Australian region during local night. 
Significantly enhanced HF conditions were observed at Cocos Island 
during local day. MUFs are expected to be near monthly predicted 
values over 17-19 Jul. Degraded HF conditions for southern Australian 
region are possible on 19-Jul due to the impact of a CME first 
observed on 15-Jul. Shortwave fadeouts are probable.

----------------------------------------------------------
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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