[Ips-dhfpr] ASWFC Daily HF Prop Report - 07 May 24 issued 2330 UT on 07 May 2024 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/07 MAY 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 MAY) 
Date   T index  Conditions    
07 May   109    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M4.3 06/2227UT  possible   lower  East Pacific/
                                    North American
  M5.1    0616UT  possible   lower  Mid East/Indian
  M1.3    0823UT  possible   lower  Mid East/Indian
  M2.4    1147UT  possible   lower  European
  M1.5    1254UT  possible   lower  European
  M8.2    1630UT  probable   lower  South American/
                                    Atlantic
  M2.1    2022UT  possible   lower  East Pacific/
                                    North American
  M3.3    2126UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values.

PCA Event : No event.

Monthly T index:
Month  T index
Apr      125
May      114
Jun      116


2. FORECAST (08 MAY - 10 MAY)
Date   T index  Conditions       MUFs                              
08 May   100    Normal           Near predicted monthly values
09 May   100    Normal           Near predicted monthly values    
10 May   100    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 48 was issued on 
6 May and is current for 7-9 May. Maximum usable frequencies 
(MUFs) on UT day 07-May were generally near predicted monthly 
values. A minor shortwave fadeout was observed in the northern 
Australian region in association with the M5.1 flare at 07/0616UT. 
Spread-F was observed at Hobart during local night hours. MUFs 
are expected to be near predicted values for 08-10 May. Frequent 
shortwave fadeouts are expected.

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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