[Ips-dhfpr] ASWFC Daily HF Prop Report - 08 April 26 issued 2330 UT on 08 Apr 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/08 APRIL 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (08 APRIL) 
Date   T index  Conditions    
08 Apr    93    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 25% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   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
Mar      92
Apr      83
May      81


2. FORECAST (09 APRIL - 11 APRIL)
Date   T index  Conditions       MUFs                              
09 Apr    90    Normal           Near predicted monthly values
10 Apr    85    Normal-fair      Near predicted monthly values    
11 Apr    80    Normal-fair      5 to 10% below predicted monthly 
                                 values   

COMMENT: Maximum Usable Frequencies (MUFs) in the Australian 
region on UT day 08-Apr were near predicted values, with enhancements 
of 20-25% observed in the Northern Australian region and at Cocos 
Island and Niue Island during local daylight hours. Sporadic-E 
was also observed in Norfolk Island during local night hours. 
Scintillation was observed at Darwin during the interval 08/1324-1340UT. 
MUFs are expected to be near predicted monthly values to around 
10% enhanced over 09-Apr. MUFs may become mildly depressed during 
10-11 Apr, especially in the Southern Australian region, due 
to upcoming coronal hole high-speed wind stream effects. Minor 
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