[Ips-dhfpr] ASWFC Daily HF Prop Report - 23 May 24 issued 2330 UT on 23 May 2024 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/23 MAY 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 MAY) 
Date   T index  Conditions    
23 May   131    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M4.2    0216UT  possible   lower  E. Asia/Aust.
  M1.7    0429UT  possible   lower  E. Asia/Aust.
  M1.0    1008UT  possible   lower  European
  M2.5    1320UT  possible   lower  European
  M1.0    1558UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Enhanced by 55% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

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


2. FORECAST (24 MAY - 26 MAY)
Date   T index  Conditions       MUFs                              
24 May   130    Normal-fair      Near to 15% above predicted 
                                 monthly values
25 May   130    Normal           Near to 15% above predicted 
                                 monthly values    
26 May   130    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 55 was issued on 
23 May and is current for 23-25 May. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 23-May 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 15% enhanced over 23-25 May. Shortwave fadeouts are possible.

----------------------------------------------------------
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