[Ips-dhfpr] ASWFC Daily HF Prop Report - 29 June 23 issued 2331 UT on 29 Jun 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/29 JUNE 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (29 JUNE) 
Date   T index  Conditions    
29 Jun   103    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M3.8    1415UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 30% at Mawson during the local day.
      Near predicted monthly values to 20% enhanced at Casey.

PCA Event : No event.

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


2. FORECAST (30 JUNE - 02 JULY)
Date   T index  Conditions       MUFs                              
30 Jun   100    Normal           Near to 15% above predicted 
                                 monthly values
01 Jul   100    Normal-fair      Near to 15% above predicted 
                                 monthly values    
02 Jul   100    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 60 was issued on 
29 June and is current for 29 Jun to 1 Jul. Maximum usable frequencies 
(MUFs) on UT day 29-Jun in the Australian region were generally 
near predicted monthly values. Spread F was observed during local 
night hours at Hobart. MUFs are generally expected to be near 
predicted values to 15% enhanced over 30-Jun to 02-Jul. 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