[Ips-dhfpr] ASWFC Daily HF Prop Report - 29 March 25 issued 2330 UT on 29 Mar 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/29 MARCH 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (29 MARCH) 
Date   T index  Conditions    
29 Mar   143    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.7 28/2339UT  possible   lower  West Pacific
  M1.4    2138UT  possible   lower  East Pacific/
                                    North American
  M1.9    2300UT  possible   lower  West Pacific

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Enhanced by 60% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% 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 (30 MARCH - 01 APRIL)
Date   T index  Conditions       MUFs                              
30 Mar   135    Normal           Near predicted monthly values 
                                 to 20% enhanced
31 Mar   130    Normal-fair      Near predicted monthly values 
                                 to 10% depressed    
01 Apr   135    Normal           Near predicted monthly values   

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 29-Mar were near predicted 
values to 25% enhanced. Sporadic-E was observed in Niue and Learmonth 
during local night hours. MUFs are expected to be near predicted 
monthly values over 30-31 Mar and 1-Apr, although brief depressions 
are possible on 31-Mar due to a potential glancing CME blow. 
Some enhancements may continue until this arrival.

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