[Ips-dhfpr] ASWFC Daily HF Prop Report - 08 June 23 issued 2330 UT on 08 Jun 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/08 JUNE 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (08 JUNE) 
Date   T index  Conditions    
08 Jun    81    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Southern Australian Region:
      Near predicted monthly values.
   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
May      98
Jun      88
Jul      87


2. FORECAST (09 JUNE - 11 JUNE)
Date   T index  Conditions       MUFs                              
09 Jun    85    Normal           Near predicted monthly values 
                                 to 15% depressed
10 Jun    90    Normal           Near predicted monthly values    
11 Jun    85    Normal-fair      Near predicted monthly values 
                                 to 15-20% depressed   

COMMENT: ASWFC SWF HF Communications Warning 55 was issued on 
7 June and is current for 8-9 Jun. Maximum usable frequencies 
(MUFs) on UT day 08-Jun were mostly near predicted values in 
the Australian region, with some northern region sites having 
depressions up to 15% during local night hours. Spread-F was 
observed at Brisbane and Townsville during local night hours. 
MUFs are expected to be mostly near predicted values over 09-11 
Jun, with some mild depressions possible during local night hours 
up to 15-20%. Degraded ionospheric conditions may persist in 
low latitudes. Shortwave fadeouts are possible.

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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.

Australian Space Weather Forecasting Centre
Bureau of Meteorology
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au