[Ips-dhfpr] ASWFC Daily HF Prop Report - 18 June 24 issued 2330 UT on 18 Jun 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 JUNE 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 JUNE) 
Date   T index  Conditions    
18 Jun   124    Fair           

Flares    Max     Fadeout    Freq.  Sectors
  M2.4    1123UT  possible   lower  European
  M1.1    1220UT  possible   lower  European

MUFs:
   Cocos Island Region:
      Enhanced by 45% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
May      121
Jun      116
Jul      117


2. FORECAST (19 JUNE - 21 JUNE)
Date   T index  Conditions       MUFs                              
19 Jun   120    Normal-fair      Near predicted monthly values
20 Jun   120    Normal-fair      Near predicted monthly values    
21 Jun   120    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 18-Jun were 
near predicted monthly values in the Australian region. Significant 
signal spreading, in both range and frequency, was observed at 
Hobart, Brisbane, Norfolk Island and Townsville during local 
night hours. Sporadic-E was observed in Brisbane and Cocos Islands 
during local dawn hours. Scintillation was observed in Niue Island 
from 18/1938-1002 UT. MUFs are expected to be near predicted 
values over 19-21 Jun. 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