[Ips-dhfpr] ASWFC Daily HF Prop Report - 03 May 23 issued 2331 UT on 03 May 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/03 MAY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (03 MAY) 
Date   T index  Conditions    
03 May    96    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M4.2    0927UT  possible   lower  Mid East/Indian
  M3.1    1014UT  possible   lower  European
  M7.2    1045UT  probable   lower  European
  M1.7    1235UT  possible   lower  European
  M2.2    1350UT  possible   lower  European

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Enhanced by 50% during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   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 (04 MAY - 06 MAY)
Date   T index  Conditions       MUFs                              
04 May    95    Normal           Near predicted monthly values
05 May   100    Normal           Near to 15% above predicted 
                                 monthly values    
06 May   100    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 42 was issued on 
3 May and is current for 3-5 May. Maximum usable frequencies 
(MUFs) on UT day 3-May in the Australian region were near predicted 
monthly values. Spread F was observed at Hobart and Perth during 
local night hours, sporadic E was observed at Darwin during local 
evening. MUFs are expected to be near predicted monthly values 
to 15% enhanced over 4-6 May. 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