[Ips-dhfpr] ASWFC Daily HF Prop Report - 07 April 25 issued 2331 UT on 07 Apr 2025 [SEC=OFFICIAL]

Australian Space Weather Forecasting Centre aswfc at bom.gov.au
Tue Apr 8 09:31:42 AEST 2025


SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/07 APRIL 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 APRIL) 
Date   T index  Conditions    
07 Apr   133    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 30% during local day.
      Enhanced by 45% during local night.
   Niue Island Region:
      Enhanced by 25% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 15% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 30% over the UT day.

PCA Event : No event.

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


2. FORECAST (08 APRIL - 10 APRIL)
Date   T index  Conditions       MUFs                              
08 Apr   120    Normal-fair      Near predicted monthly values 
                                 to 15% depressed
09 Apr   120    Normal-fair      Near predicted monthly values 
                                 to 15-20% depressed    
10 Apr   115    Normal-fair      Near predicted monthly values 
                                 to 15-20% depressed   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 7-Apr were mostly near predicted values, with 
enhancements in the north and depressions in the south. Spread 
F was observed in Hobart during local night hours. MUFs are expected 
to be near predicted values to 15-20% depressed over 8-10 Apr 
due to persistent coronal hole activity.

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



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