[Ips-dhfpr] ASWFC Daily HF Prop Report - 30 March 25 issued 2331 UT on 30 Mar 2025 [SEC=OFFICIAL]

Australian Space Weather Forecasting Centre aswfc at bom.gov.au
Mon Mar 31 10:31:00 AEDT 2025


SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/30 MARCH 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (30 MARCH) 
Date   T index  Conditions    
30 Mar   136    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.9 29/2300UT  possible   lower  West Pacific
  M1.5    0148UT  possible   lower  West Pacific
  M1.6    1643UT  possible   lower  South American/
                                    Atlantic
  M1.4    2250UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Enhanced by 35% during local day.
      Enhanced by 55% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Feb      127
Mar      117
Apr      114


2. FORECAST (31 MARCH - 02 APRIL)
Date   T index  Conditions       MUFs                              
31 Mar   130    Normal-fair      Near predicted monthly values 
                                 to 15-20% enhanced
01 Apr   135    Normal-fair      Near predicted monthly values 
                                 to 10-15% enhanced    
02 Apr   140    Normal           Near predicted monthly values 
                                 to 15-20% enhanced   

COMMENT: ASWFC SWF HF Communications Warning 32 was issued on 
29 March and is current for 29-31 Mar. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 30-Mar were near predicted 
values to 15% enhanced. Sporadic-E was observed in Brisbane and 
Townsville during local night hours. Scintillation was observed 
in Weipa from 1106 to 1130 UT. MUFs are generally expected to 
be near predicted values to 15-20% enhanced over 31-Mar to 1-2 
Apr.

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



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