[Ips-dhfpr] ASWFC Daily HF Prop Report - 06 May 23 issued 2331 UT on 06 May 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/06 MAY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (06 MAY) 
Date   T index  Conditions    
06 May   111    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 35% during local day.
      Enhanced by 25% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
      Enhanced by 30% after local dawn.
   Southern Australian Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   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
Apr      120
May      84
Jun      85


2. FORECAST (07 MAY - 09 MAY)
Date   T index  Conditions       MUFs                              
07 May    75    Fair             Near predicted monthly values 
                                 to 15-20% depressed
08 May    70    Fair             Near predicted monthly values 
                                 to 15-20% depressed    
09 May    85    Normal-fair      Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 43 was issued on 
5 May and is current for 6-8 May. Maximum usable frequencies 
(MUFs) on UT day 06-May in the Australian region were near predicted 
values to 30% enhanced. Strong spread-F was observed in Hobart 
during local night hours. MUFs are expected to be near predicted 
monthly values to 15-20% depressed over late 07-08 May due to 
anticipated geomagnetic activity. MUFs are expected to return 
to mostly near predicted monthly values by 09-May.

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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