[Ips-dhfpr] ASWFC Daily HF Prop Report - 06 April 25 issued 2330 UT on 06 Apr 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/06 APRIL 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (06 APRIL) 
Date   T index  Conditions    
06 Apr   112    Fair           

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 30% during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 45% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Mar      126
Apr      115
May      113


2. FORECAST (07 APRIL - 09 APRIL)
Date   T index  Conditions       MUFs                              
07 Apr   125    Normal           Near predicted monthly values
08 Apr   125    Normal           Near predicted monthly values    
09 Apr   125    Fair-normal      Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 06-Apr were depressed 20% in the southern Australian 
region and near predicted monthly values in the northern Australian 
region. MUFs at Perth were depressed 50% early in UT day. Strong 
spread F was observed at Hobart during local night hours. Sporadic 
E was observed at east coast sites during local night hours. 
MUFs are expected to be near predicted monthly values 07-09 Apr.

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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