[Ips-dhfpr] ASWFC Daily HF Prop Report - 27 June 23 issued 2330 UT on 27 Jun 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/27 JUNE 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (27 JUNE) 
Date   T index  Conditions    
27 Jun   104    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.2    1514UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 25% during local day.
      Enhanced by 35% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
May      98
Jun      88
Jul      87


2. FORECAST (28 JUNE - 30 JUNE)
Date   T index  Conditions       MUFs                              
28 Jun   105    Normal           Near to 15% above predicted 
                                 monthly values
29 Jun   105    Normal           Near to 15% above predicted 
                                 monthly values    
30 Jun   105    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 59 was issued on 
26 June and is current for 26-28 Jun. Maximum usable frequencies 
(MUFs) on UT day 27-Jun in the Australian region were generally 
near predicted monthly values. Spread F was observed during local 
night hours at Hobart and Perth. MUFs are generally expected 
to be near predicted values to 15% enhanced over 28-30 Jun. Mildly 
degraded HF conditions may be experienced during local night 
hours. 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