[Ips-dhfpr] ASWFC Daily HF Prop Report - 16 April 24 issued 2331 UT on 16 Apr 2024 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 APRIL 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 APRIL) 
Date   T index  Conditions    
16 Apr   143    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M1.1    1803UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Mostly near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
      Enhanced by 45% after local dawn.
   Southern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 25% during local night.
      Briefly depressed 10-15% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 30% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Mar      120
Apr      114
May      115


2. FORECAST (17 APRIL - 19 APRIL)
Date   T index  Conditions       MUFs                              
17 Apr   120    Normal-fair      Near predicted monthly values
18 Apr   120    Fair-normal      Near predicted monthly values    
19 Apr   120    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 36 was issued on 
14 April and is current for 15-17 Apr. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 16-Apr were generally 
near predicted monthly values, with Hobart MUFs briefly depressed 
10-15% after local dawn this morning. Strong predawn spread F 
was observed at Hobart. MUFs are expected to be near predicted 
monthly values over 17-19 Apr. Isolated minor 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