[Ips-dhfpr] ASWFC Daily HF Prop Report - 10 April 26 issued 2330 UT on 10 Apr 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/10 APRIL 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (10 APRIL) 
Date   T index  Conditions    
10 Apr    79    Fair-normal    

Flares: none.

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

PCA Event : No event.

Monthly T index:
Month  T index
Mar      92
Apr      83
May      81


2. FORECAST (11 APRIL - 13 APRIL)
Date   T index  Conditions       MUFs                              
11 Apr    70    Fair-normal      Depressed 10 to 15%/near predicted 
                                 monthly values
12 Apr    80    Fair-normal      Depressed 10 to 15%/near predicted 
                                 monthly values    
13 Apr    90    Normal           Near predicted monthly values   

COMMENT: Maximum Usable Frequencies (MUFs) in the Australian 
region were generally near predicted monthly values on 10-Apr. 
Northern Australian region MUFs were depressed by up to 20% at 
times during local night hours. Spread F was observed at Hobart 
during local night hours. MUFs are generally expected to be near 
predicted monthly values over 11-13 Apr for the northern Australian 
region with brief 15% depressions after local dawn for the southern 
Australian region during 11-12 Apr due to mild geomagnetic activity 
induced by a coronal hole wind stream.

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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