[Ips-dhfpr] ASWFC Daily HF Prop Report - 14 April 23 issued 2330 UT on 14 Apr 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/14 APRIL 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (14 APRIL) 
Date   T index  Conditions    
14 Apr   129    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.1    1618UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Enhanced by 40% during local night.
      Enhanced by 20% after local dawn.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 40% during local night.
      Enhanced by 20% after local dawn.
   Southern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 30% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Mar      132
Apr      84
May      84


2. FORECAST (15 APRIL - 17 APRIL)
Date   T index  Conditions       MUFs                              
15 Apr   125    Normal           15-30% above predicted monthly 
                                 values
16 Apr   125    Normal           15-30% above predicted monthly 
                                 values    
17 Apr   125    Normal           15-30% above predicted monthly 
                                 values   

COMMENT: ASWFC SWF HF Communications Warning 36 was issued on 
14 April and is current for 14-16 Apr. Maximum usable frequencies 
(MUFs) on UT day 14-Apr in the Australian region were enhanced 
by 15-40%. MUFs are expected to be 15-30% enhanced over 15-17 
Apr. Mild degradations are possible during local night hours 
on 15-Apr, due to a possible mild increase in geomagnetic activity. 
Isolated shortwave fadeouts are possible. Scintillation was observed 
at Niue from 14/1129-1150UT.

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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