[Ips-dhfpr] SWS Daily HF Prop Report - 12 May 22 issued 2331 UT on 12 May 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/12 MAY 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (12 MAY) 
Date   T index  Conditions    
12 May    80    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.3    2020UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Enhanced by 20% 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
Apr      77
May      51
Jun      54


2. FORECAST (13 MAY - 15 MAY)
Date   T index  Conditions       MUFs                              
13 May    80    Normal           Near to 15% above predicted 
                                 monthly values
14 May    80    Normal           Near to 15% above predicted 
                                 monthly values    
15 May    80    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: SWS SWF HF Communications Warning 42 was issued on 11 
May and is current for 12-14 May. Maximum usable frequencies 
(MUFs) on UT day 12-May were mostly near monthly predicted values, 
to slightly enhanced. Spread-F was observed at Hobart during 
night hours. MUFs are expected to be mostly near monthly predicted 
values to slightly enhanced during 13-15 May. 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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