[Ips-dhfpr] SWS Daily HF Prop Report - 02 July 22 issued 2330 UT on 02 Jul 2022 [SEC=OFFICIAL]

Regional Warning Centre rwc at ips.gov.au
Sun Jul 3 09:30:47 EST 2022


SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/02 JULY 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (02 JULY) 
Date   T index  Conditions    
02 Jul    78    Fair-normal    

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 30% during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian Region:
      Initially near predicted monthly values then enhanced 15%.
      Southern Australian region MUFs briefly depressed 15% after local dawn.
      Hobart 20-30% depressed 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 (03 JULY - 05 JULY)
Date   T index  Conditions       MUFs                              
03 Jul    50    Normal-fair      Depressed 10 to 20%/near predicted 
                                 monthly values
04 Jul    65    Normal           Near predicted monthly values    
05 Jul    65    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 02-Jul were 
initially near predicted monthly values then becoming unexpectedly 
enhanced by 15-25%. Spread F was observed overnight for southern 
region sites in association with unexpected geomagnetic activity. 
MUFs are generally expected to be near predicted monthly values, 
southern Australian regional MUFs are likely to be briefly initially 
depressed 15-20% then recover. Northern Australian regional MUFs 
are 15% depressed to near predicted monthly values after local 
dawn. Further degraded conditions are possible for the southern 
Australian region during 04-05 Jul in association with the chance 
of an increase in geomagnetic activity induced from recent CMEs.

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