[Ips-dhfpr] ASWFC Daily HF Prop Report - 22 June 23 issued 2330 UT on 22 Jun 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/22 JUNE 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (22 JUNE) 
Date   T index  Conditions    
22 Jun   109    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.1    1121UT  possible   lower  European

MUFs:
   Cocos Island Region:
      Enhanced by 60% during local day.
      Enhanced by 20% during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values.
   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 (23 JUNE - 25 JUNE)
Date   T index  Conditions       MUFs                              
23 Jun   100    Normal           Near predicted monthly values
24 Jun   100    Normal           Near predicted monthly values    
25 Jun   100    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 57 was issued on 
21 June and is current for 21-23 Jun. Maximum usable frequencies 
(MUFs) on UT day 22-Jun in the Australian region were generally 
near predicted monthly values. Spread F was observed during local 
night hours in Hobart and Townsville. MUFs are expected to be 
near predicted values over 23-25 Jun. Mildly degraded conditions 
are possible during local night hours. Shortwave fadeouts are 
probable.

----------------------------------------------------------
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