[Ips-dhfpr] ASWFC Daily HF Prop Report - 16 June 23 issued 2330 UT on 16 Jun 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 JUNE 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 JUNE) 
Date   T index  Conditions    
16 Jun   120    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.0    0530UT  possible   lower  E. Asia/Aust.
  M1.0    1038UT  possible   lower  European
  M1.0    1959UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Enhanced by 40% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 35% over the UT day.

PCA Event : No event.

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


2. FORECAST (17 JUNE - 19 JUNE)
Date   T index  Conditions       MUFs                              
17 Jun   115    Normal           Near to 15% above predicted 
                                 monthly values
18 Jun   115    Normal           Near to 15% above predicted 
                                 monthly values    
19 Jun   115    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 16-Jun were 
near predicted monthly values to 25% enhanced in southern Australian 
regions. Strong spread F was observed at Hobart, Darwin and Learmonth 
during local night hours. MUFs are expected to be mostly near 
predicted values to 15% enhanced over 17-19 Jun. Mildly degraded 
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