[Ips-dhfpr] ASWFC Daily HF Prop Report - 05 May 23 issued 2330 UT on 05 May 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/05 MAY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (05 MAY) 
Date   T index  Conditions    
05 May    97    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M2.1    0802UT  possible   lower  Mid East/Indian
  M1.2    1531UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Enhanced by 30% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   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 (06 MAY - 08 MAY)
Date   T index  Conditions       MUFs                              
06 May    95    Normal-fair      Near predicted monthly values
07 May    75    Fair             Near predicted monthly values 
                                 to 20% depressed    
08 May    70    Fair             Near predicted monthly values 
                                 to 20% depressed   

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 05-May in the Australian region were near predicted 
monthly values. Spread-F was observed at Hobart during local 
night hours. MUFs are expected to be near predicted monthly values 
to depressed 20% over 07-08 May due to anticipated geomagnetic 
activity.

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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