[Ips-dhfpr] ASWFC Daily HF Prop Report - 23 February 24 issued 2331 UT on 23 Feb 2024 [SEC=OFFICIAL]

[Regional Warning Centre]

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

1. SUMMARY (23 FEBRUARY) 
Date   T index  Conditions    
23 Feb   134    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.0    1328UT  possible   lower  European
  M1.5    1553UT  possible   lower  South American/
                                    Atlantic
  M2.6    1747UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 65% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 15% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jan      144
Feb      108
Mar      108


2. FORECAST (24 FEBRUARY - 26 FEBRUARY)
Date   T index  Conditions       MUFs                              
24 Feb   130    Normal-fair      Near to 15% above predicted 
                                 monthly values
25 Feb    85    Fair             Depressed 15%/near predicted 
                                 monthly values    
26 Feb   100    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 21 was issued on 
22 February and is current for 22-24 Feb. Maximum usable frequencies 
(MUFs) on UT day 23-Feb were near predicted monthly values to 
25% enhanced in the Australian region. Ionospheric amplitude 
scintillation was observed 23/1453-1510UT at Darwin. MUFs are 
expected to be near predicted monthly values to 15% enhanced 
on 24-Feb. Moderately degraded HF conditions are expected on 
25-Feb for the southern Australian region due to an anticipated 
CME component arrival. MUFs are expected to be near predicted 
monthly values on 26-Feb. Shortwave fadeouts are probable.

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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