[Ips-dhfpr] ASWFC Daily HF Prop Report - 23 February 23 issued 2330 UT on 23 Feb 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/23 FEBRUARY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 FEBRUARY) 
Date   T index  Conditions    
23 Feb   118    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M1.5    0614UT  possible   lower  Mid East/Indian
  M1.0    0848UT  possible   lower  Mid East/Indian
  M1.3    0900UT  possible   lower  Mid East/Indian

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
      Enhanced by 40% after local dawn.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
      Enhanced by 35% after local dawn.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 20% during local night.
   Southern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jan      119
Feb      75
Mar      76


2. FORECAST (24 FEBRUARY - 26 FEBRUARY)
Date   T index  Conditions       MUFs                              
24 Feb   120    Normal           Near to 15% above predicted 
                                 monthly values
25 Feb   125    Normal           Near to 15% above predicted 
                                 monthly values    
26 Feb   120    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 20 was issued on 
21 February and is current for 22-24 Feb. Maximum usable frequencies 
(MUFs) in the Australian region on 23-Feb were 15-20% enhanced. 
Mild sporadic E was observed across the Australian region, mostly 
during local night. Spread F was observed at Hobart during local 
night. MUFs are expected to be near predicted monthly values 
to 15% enhanced over 24-26 Feb. 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