[Ips-dhfpr] SWS Daily HF Prop Report - 12 May 21 issued 2330 UT on 12 May 2021

Regional Warning Centre rwc at ips.gov.au
Thu May 13 09:30:11 EST 2021

ISSUED AT 2330UT/12 MAY 2021 BY Space Weather Services

1. SUMMARY (12 MAY) 
Date   T index  Conditions    
12 May    10    Normal-fair    

Flares: none.

   Cocos Island Region:
      No data available.
   Niue Island Region:
      Depressed by 20% during local day.
      Near predicted monthly values 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.
      Enhanced by 30% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 30% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Apr      12
May      21
Jun      24

2. FORECAST (13 MAY - 15 MAY)
Date   T index  Conditions       MUFs                              
13 May     0    Normal-fair      Depressed 15%/near predicted 
                                 monthly values
14 May     5    Normal-fair      Near predicted monthly values    
15 May    10    Normal           Near predicted monthly values   

COMMENT: MUFs in the Australian region on UT day 12 May were 
mostly near predicted monthly values with some mild to moderate 
depressions during the local day. There were also some moderate 
enhancements in the South Australian during the local night and 
Antarctic regions. In the Australian region, MUFs on UT day 13 
May are expected to be mostly near predicted monthly values during 
the local day, with some mild to moderate depressions expected 
during the local night. The forecast depressions are in response 
to the recent disturbed conditions associated with the 9 May 
CME. Then mostly normal HF propagation conditions are expected 
on UT days 14-15 May.

For an explanation of some of the terms in this report, go to
http://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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