[Ips-dhfpr] ASWFC Daily HF Prop Report - 07 May 23 issued 2330 UT on 07 May 2023 [SEC=OFFICIAL]

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SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/07 MAY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 MAY) 
Date   T index  Conditions    
07 May   108    Fair-poor      

Flares    Max     Fadeout    Freq.  Sectors
  M1.5    2234UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Enhanced by 35% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 40% during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   Southern Australian Region:
      Mostly 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 (08 MAY - 10 MAY)
Date   T index  Conditions       MUFs                              
08 May    85    Normal-fair      Near predicted monthly values 
                                 with some mild depressions
09 May    80    Normal-fair      Near predicted monthly values    
10 May    90    Normal           Near predicted monthly values 
                                 to 15% enhanced   

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 07-May were mostly near predicted monthly values 
to 30% enhanced in the Australia region. Spread-F was observed 
at Brisbane, Townsville and Hobart. MUFs are expected to be near 
predicted monthly values on 08-May, with some mild depressions 
possible. MUFs are expected to be near predicted values over 
09-10 May, with some enhancements possible. 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