[Ips-dhfpr] ASWFC Daily HF Prop Report - 08 April 23 issued 2330 UT on 08 Apr 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/08 APRIL 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (08 APRIL) 
Date   T index  Conditions    
08 Apr   125    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M2.9    0146UT  possible   lower  West Pacific

MUFs:
   Cocos Island Region:
      Enhanced by 30% during local day.
      Enhanced by 45% during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 25% during local night.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 20-25% during local night and after local dawn.
   Southern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 20-25% during local night and after local dawn.
   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
Mar      132
Apr      84
May      84


2. FORECAST (09 APRIL - 11 APRIL)
Date   T index  Conditions       MUFs                              
09 Apr   125    Normal           Near to 15% above predicted 
                                 monthly values
10 Apr   125    Normal           Near to 15% above predicted 
                                 monthly values    
11 Apr   125    Normal-fair      Near to 15% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 08-Apr in 
the Australian region were enhanced by 15-25%. Sporadic E was 
observed at Brisbane during local night. MUFs are expected to 
be near predicted monthly values to 15% enhanced over 09-11 Apr. 
Mild degradations are possible on 11-Apr due to expected increase 
in geomagnetic activity. Isolated 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